The alias '*' is already mapped to the value '*'.

Caused by: org.apache.ibatis.type.TypeException: The alias 'BevaContentAndAlbumShareModel' is already mapped to the value 'com.giska.resource.domain.beva.BevaContentAndAlbumShareModel'.

1、springboot 项目
2、这个BevaContentAndAlbumShareModel类指定定义了一下还没有用到
3、没有用别名
4、配置文件中配置了

 #mybatis实体,映射文件
mybatis.type-aliases-package=com.giska.resource.domain
mybatis.mapper-locations=classpath:mapper/*Mapper.xml

启动类中

 @SpringBootApplication()
@MapperScan("com.giska.resource.mapper")

mapper文件只有一个并且与这个实体无关

2个回答

mybatis.type-aliases-package=com.giska.resource.domain 你的package 应该是接口包 路径

例如我

mybatis:
mapperLocations: classpath:/mapper/*.xml
typeAliasesPackage: cn.momosv.hos.dao

mapperScanPackage: cn.momosv.hos.dao
configLocation: classpath:/mybatis-config.xml

@MapperScan("cn.momosv.hos.dao") //扫描的是java接口包,不是xml文件

ma15732625261
我喜欢好听的音乐爱笑的你 谢谢了,解决了问题
接近 2 年之前 回复
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Exception java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Category is not mapped [from Category where cid = ?] org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:138) org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181) org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188) org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:713) org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) com.dao.impl.BaseDaoImpl.findOne(BaseDaoImpl.java:128) com.dao.impl.CategoryDaoImpl.findById(CategoryDaoImpl.java:44) com.actions.AdminCategoryAction.findById(AdminCategoryAction.java:81) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:897) ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1299) ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108) ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1375) ognl.ASTMethod.getValueBody(ASTMethod.java:91) ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) ognl.SimpleNode.getValue(SimpleNode.java:258) ognl.Ognl.getValue(Ognl.java:470) ognl.Ognl.getValue(Ognl.java:434) com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:398) com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:450) com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:396) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251) org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575) org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81) org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) Root Cause org.hibernate.hql.internal.ast.QuerySyntaxException: Category is not mapped [from Category where cid = ?] org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:79) org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103) org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:219) org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:143) org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:119) org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80) org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153) org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:595) org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:704) org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) com.dao.impl.BaseDaoImpl.findOne(BaseDaoImpl.java:128) com.dao.impl.CategoryDaoImpl.findById(CategoryDaoImpl.java:44) com.actions.AdminCategoryAction.findById(AdminCategoryAction.java:81) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:897) ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1299) ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108) ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1375) ognl.ASTMethod.getValueBody(ASTMethod.java:91) ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) ognl.SimpleNode.getValue(SimpleNode.java:258) ognl.Ognl.getValue(Ognl.java:470) ognl.Ognl.getValue(Ognl.java:434) com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:398) com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:450) com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:396) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251) org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140) 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org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) Root Cause org.hibernate.hql.internal.ast.QuerySyntaxException: Category is not mapped org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:169) org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:91) org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:79) org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:331) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3695) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3584) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:576) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:313) org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:261) org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:271) org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:191) org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:143) org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:119) org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80) org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153) org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:595) org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:704) org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) com.dao.impl.BaseDaoImpl.findOne(BaseDaoImpl.java:128) com.dao.impl.CategoryDaoImpl.findById(CategoryDaoImpl.java:44) com.actions.AdminCategoryAction.findById(AdminCategoryAction.java:81) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:897) ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1299) ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108) ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1375) ognl.ASTMethod.getValueBody(ASTMethod.java:91) ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) ognl.SimpleNode.getValue(SimpleNode.java:258) ognl.Ognl.getValue(Ognl.java:470) ognl.Ognl.getValue(Ognl.java:434) com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:398) com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:450) com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:396) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251) org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575) org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81) org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) Note The full stack trace of the root cause is available in the server logs.

Spring Boot 使用JPA连接MySQL数据库报错 is not mapped

小白向各位大侠求助: 创建Spring Boot 工程时,使用JPA连接MySQL数据库,查询时报错,报错信息如下: ``` 2018-06-04 06:34:44.959 ERROR 6116 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.hql.internal.ast.QuerySyntaxException: Person is not mapped [select t from Person t]; nested exception is java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Person is not mapped [select t from Person t]] with root cause org.hibernate.hql.internal.ast.QuerySyntaxException: Person is not mapped at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:169) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:91) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:79) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:326) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3706) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3595) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:576) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:313) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:261) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:266) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:189) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:141) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:77) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:553) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:662) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:350) ~[spring-orm-5.0.6.RELEASE.jar:5.0.6.RELEASE] at com.sun.proxy.$Proxy76.createQuery(Unknown Source) ~[na:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:304) ~[spring-orm-5.0.6.RELEASE.jar:5.0.6.RELEASE] at com.sun.proxy.$Proxy76.createQuery(Unknown Source) ~[na:na] at com.neuqsoft.demo.repository.impl.PersonDaoImpl.findAll(PersonDaoImpl.java:52) ~[classes/:na] at com.neuqsoft.demo.repository.impl.PersonDaoImpl$$FastClassBySpringCGLIB$$7895840c.invoke(<generated>) ~[classes/:na] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:746) ~[spring-aop-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688) ~[spring-aop-5.0.6.RELEASE.jar:5.0.6.RELEASE] at com.neuqsoft.demo.repository.impl.PersonDaoImpl$$EnhancerBySpringCGLIB$$182f86eb.findAll(<generated>) ~[classes/:na] at com.neuqsoft.demo.service.PersonService.findAll(PersonService.java:50) ~[classes/:na] at com.neuqsoft.demo.controller.PersonController.getPseronList(PersonController.java:59) ~[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:877) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:783) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:635) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851) ~[spring-webmvc-5.0.6.RELEASE.jar:5.0.6.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.31.jar:8.5.31] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.0.6.RELEASE.jar:5.0.6.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) ~[tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468) [tomcat-embed-core-8.5.31.jar:8.5.31] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.31.jar:8.5.31] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.31.jar:8.5.31] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131] ``` 实体文件: ``` @Entity @Table(name = "person") public class Person { @Id @GeneratedValue(strategy = GenerationType.AUTO) private String id; @Column(name="name") private String name; @Column(name="sex") private String sex; @Column(name="tel") private String tel; @Column(name="address") private String address; @Column(name="age") private String age; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public String getTel() { return tel; } public void setTel(String tel) { this.tel = tel; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getAge() { return age; } public void setAge(String age) { this.age = age; } } ``` 数据库表: ![图片说明](https://img-ask.csdn.net/upload/201806/04/1528064584_339931.jpg) DAO文件: ``` package com.neuqsoft.demo.repository.impl; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import com.neuqsoft.demo.entity.Person; import com.neuqsoft.demo.repository.PersonDao; @Repository public class PersonDaoImpl implements PersonDao { @Autowired @PersistenceContext private EntityManager entityManager; @Override public List<Person> findAll() { return this.entityManager.createQuery("select t from Person t").getResultList(); } } ``` Pom.xml ``` <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.neuqsoft</groupId> <artifactId>DemoJPAForSpringBoot</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>DemoJPAForSpringBoot</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.2.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!-- custom renw --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.0</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> ``` application.properties: ``` #mysql #datasource spring.datasource.driver-class-name=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/forspringboot?useSSL=false spring.datasource.username=root spring.datasource.password=1qaz!QAZ spring.jpa.show-sql= true ```

(求助帖)mybatis碰到Mapped Statements collection does not contain value for怎么解决

在网上查过答案,命名空间,接口啥的都一致,文件夹也一致,其他的也没啥问题,我朋友和我一样的代码都能运行,我的报错。 具体报错 ``` org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for cn/youwo/dao/UserMapper.findById ### Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for cn/youwo/dao/UserMapper.findById at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:107) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:98) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:62) at cn.youwo.dao.UsersMapperTest.findById(UsersMapperTest.java:31) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) Caused by: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for cn/youwo/dao/UserMapper.findById at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:775) at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:615) at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:608) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:103) ... 25 more ``` 项目文件图 ![图片说明](https://img-ask.csdn.net/upload/202003/31/1585626689_310097.png) UserM和Test两个文件忽略,那是我用注解法写的,可以运行 src/cn/youwo/ bean/Users ``` package cn.youwo.bean; import java.util.Date; public class Users { private int id; private String nickname; private String realname; private String pwd; private String phone; private String email; private String address; private Date createTime; private int type; private String realid; public int getId() { return id; } public void setId(int id) { this.id = id; } ...... } ``` dao/UsersMapper和UsersMapper.xml ``` package cn.youwo.dao; import cn.youwo.bean.Users; import java.util.List; public interface UsersMapper { Users findById(int id); Users findByName(String name); List<Users>findAll(); void add(Users user); void update(Users user); void delete(int id); } ``` ``` <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <!--!DOCTYPE configuration SYSTEM "mybatis-3-config.dtd" --> <mapper namespace="cn.youwo.dao.UsersMapper"> <select id="findById" resultType="cn.youwo.bean.Users" parameterType="int"> select   id,   nickname,   realname,   pwd,   phone,   email,   address,   create_time createTime,   type,   realid   from n_users where id=#{id} </select> </mapper> ``` mybatis-config.xml ``` <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <properties resource="jdbc.properties"/> <!--指定什么阶段=开发阶段=测试阶段=生产阶段--> <environments default="development"> <environment id="development"> <!--事务管理器--> <transactionManager type="JDBC"/> <!--数据源--> <dataSource type="POOLED"> <property name="driver" value="${jdbc.driver}"/> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </dataSource> </environment> </environments> <mappers> <mapper resource="cn/youwo/dao/UsersMapper.xml"/> <!--<mapper class="cn.youwo.dao.UsersM"/>--> </mappers> </configuration> ``` test/cn/youwo/dao/UsersMapperTest ``` package cn.youwo.dao; import cn.youwo.bean.Users; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import org.junit.Assert; import org.junit.Test; import java.io.InputStream; import java.text.SimpleDateFormat; public class UsersMapperTest { static final String CONFIG_FILE="mybatis-config.xml"; private static SqlSessionFactory factory; static { SqlSessionFactoryBuilder builder=new SqlSessionFactoryBuilder(); try { InputStream inputStream = Resources.getResourceAsStream(CONFIG_FILE); factory=builder.build(inputStream); } catch (Exception e) { e.printStackTrace(); } } @Test public void findById(){ SqlSession session = factory.openSession(); Users user = session.selectOne("cn/youwo/dao/UserMapper.findById",2); session.close(); Assert.assertNotNull(user); Assert.assertEquals("匿名",user.getNickname()); Assert.assertEquals("123",user.getPwd()); SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd"); String srt=df.format(user.getCreateTime()); Assert.assertEquals("2020-03-21",srt); } } ```

mybatis注解开发异常Mapped Statements collection does not contain value

异常信息如下: Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.inso.dao.StaffDao.selectByPrimaryKey at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:75) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371) at com.sun.proxy.$Proxy19.selectList(Unknown Source) at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:198) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:114) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:58) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:43) at com.sun.proxy.$Proxy28.selectAllSalaryMan(Unknown Source) at cn.inso.service.SalaryManService.selectAllCharge(SalaryManService.java:27) at cn.inso.web.SalaryManController.medicineeList(SalaryManController.java:39) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) ![图片说明](https://img-ask.csdn.net/upload/201905/04/1556936000_295054.png)

hibernate 提示is not mapped

使用hibernate报错 ![图片说明](https://img-ask.csdn.net/upload/201610/16/1476608988_956036.jpg) ![图片说明](https://img-ask.csdn.net/upload/201610/16/1476609010_875852.jpg) 但是上图更改为下图,即可不报错 ![图片说明](https://img-ask.csdn.net/upload/201610/16/1476609097_309978.jpg) 请问要如何解决。

spring boot mybatis 枚举错误,无法映射

spring boot mybatis 枚举错误 * 今天遇到一个问题,解决了好几个小时,没有搞定,搞到现在,有大佬可以帮我看下吗?万分感谢,没有分了,枚举映射,在idea中可以使用, 部署使用java -jar 方式就报错 * jdk1.8 * mybatis3.0.7.1 * application.yml环境为prod * ``` mybatis-plus: #枚举 typeHandlersPackage: com.xxx.common.module.handler ``` * 查询代码,不能转换 * ``` public LsAppEntity queryByAppKey(String appKey) { return this.getOne(new QueryWrapper<LsAppEntity>() .eq("app_key", appKey) .ne("status", StatusEnum.删除)); } ``` 1. Enum代码 ``` /** * Enum - 状态 * * @author xxx * @version 1.0.0 */ @JSONType(serializeEnumAsJavaBean = true) @JsonFormat(shape = JsonFormat.Shape.OBJECT) public enum StatusEnum implements BaseEnum<StatusEnum, Integer> { /** 删除 */ 删除(-1, "删除"), /** 无效 */ 无效(0, "无效"), /** 有效 */ 有效(1, "有效"); /** * 值. */ private Integer value; /** * 名称. */ private String name ; static { subClass.add(StatusEnum.class); } StatusEnum(Integer value, String name) { this.value = value; this.name = name; } @Override public Integer getValue() { return value; } public void setValue(Integer value) { this.value = value; } @Override public String getName() { return name; } public void setName(String name) { this.name = name; } //根据key获取枚举 public static StatusEnum getEnumByValue(Integer value){ if (null == value){ return null; } for(StatusEnum e: StatusEnum.values()){ if(e.getValue().equals(value)){ return e; } } return null; } } ``` 2. 枚举转换处理器 ``` package com.xxx.common.module.handler; import com.xxx.common.module.enums.*; import lombok.extern.slf4j.Slf4j; import org.apache.ibatis.type.BaseTypeHandler; import org.apache.ibatis.type.JdbcType; import org.apache.ibatis.type.MappedTypes; import java.sql.CallableStatement; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; /** * 枚举转换处理器 * * @author xxx * @version 1.0.0 */ @Slf4j @MappedTypes(value = {StatusEnum.class}) public final class BaseEnumTypeHandler<E extends BaseEnum> extends BaseTypeHandler<E> { private Class<E> type; private E[] enums; public BaseEnumTypeHandler() { } public BaseEnumTypeHandler(Class<E> type) { if (type == null) { throw new IllegalArgumentException("Type argument cannot be null"); } this.type = type; this.enums = this.type.getEnumConstants(); if (this.enums == null) { throw new IllegalArgumentException(type.getSimpleName() + " does not represent an enum type."); } } @Override public void setNonNullParameter(PreparedStatement ps, int i, E parameter, JdbcType jdbcType) throws SQLException { //BaseTypeHandler 进行非空校验 log.debug("index : {}, parameter : {},jdbcType : {} ", i, parameter.getValue(), jdbcType); if (jdbcType == null) { ps.setObject(i, parameter.getValue()); } else { ps.setObject(i, parameter.getValue(), jdbcType.TYPE_CODE); } } @Override public E getNullableResult(ResultSet rs, String columnName) throws SQLException { Object code = rs.getObject(columnName); if (rs.wasNull()) { return null; } return getEnmByCode(code); } @Override public E getNullableResult(ResultSet rs, int columnIndex) throws SQLException { Object code = rs.getObject(columnIndex); if (rs.wasNull()) { return null; } return getEnmByCode(code); } @Override public E getNullableResult(CallableStatement cs, int columnIndex) throws SQLException { Object code = cs.getObject(columnIndex); if (cs.wasNull()) { return null; } return getEnmByCode(code); } private E getEnmByCode(Object code) { if (code == null) { throw new NullPointerException("the result code is null " + code); } if (code instanceof Integer) { for (E e : enums) { if (e.getValue() == code) { return e; } } throw new IllegalArgumentException("Unknown enumeration type , please check the enumeration code : " + code); } if (code instanceof String) { for (E e : enums) { if (code.equals(e.getValue())) { return e; } } throw new IllegalArgumentException("Unknown enumeration type , please check the enumeration code : " + code); } throw new IllegalArgumentException("Unknown enumeration type , please check the enumeration code : " + code); } } ``` 3. 报错信息 2020-01-20 02:45:35.879 ERROR 2472 --- [nio-8081-exec-1] c.l.exception.RRExceptionHandler : nested exception is org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'status' from result set. Cause: java.lang.IllegalArgumentException: No enum constant com.xxx.common.module.enums.StatusEnum.1 * org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'status' from result set. Cause: java.lang.IllegalArgumentException: No enum constant com.xxx.common.module.enums.StatusEnum.1 * at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77) * at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446) * at com.sun.proxy.$Proxy132.selectList(Unknown Source) * at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230) * at com.baomidou.mybatisplus.core.override.PageMapperMethod.executeForMany(PageMapperMethod.java:173) * at com.baomidou.mybatisplus.core.override.PageMapperMethod.execute(PageMapperMethod.java:86) * at com.baomidou.mybatisplus.core.override.PageMapperProxy.invoke(PageMapperProxy.java:64) * at com.sun.proxy.$Proxy137.selectList(Unknown Source) * at com.baomidou.mybatisplus.extension.service.impl.ServiceImpl.getOne(ServiceImpl.java:259) * at com.baomidou.mybatisplus.extension.service.IService.getOne(IService.java:230) * at com.xxx.common.module.service.impl.AppServiceImpl.queryByAppKey(AppServiceImpl.java:100) * at com.xxx.common.module.service.impl.AppServiceImpl$$FastClassBySpringCGLIB$$9380a940.invoke(<generated>) * at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) * at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684) * at com.xxx.common.module.service.impl.AppServiceImpl$$EnhancerBySpringCGLIB$$307b01.queryByAppKey(<generated>) * at com.xxx.common.module.service.impl.AppInfoServiceImpl.validateBaseApi(AppInfoServiceImpl.java:141) * at com.xxx.common.module.service.impl.AppInfoServiceImpl.appInfo(AppInfoServiceImpl.java:157) * at com.xxx.common.module.service.impl.AppInfoServiceImpl$$FastClassBySpringCGLIB$$2bb67632.invoke(<generated>) * at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) * at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684) * at com.xxx.common.module.service.impl.AppInfoServiceImpl$$EnhancerBySpringCGLIB$$8bd88917.appInfo(<generated>) * at com.xxx.controller.ApiAppProductController.list(ApiAppProductController.java:79) * at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) * at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) * at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) * at java.lang.reflect.Method.invoke(Method.java:483) * at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) * at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) * at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) * at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) * at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) * at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) * at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) * at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) * at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) * at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) * at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) * at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) * at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) * at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) * at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) * at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) * at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) * at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) * at com.xxx.common.xss.XssFilter.doFilter(XssFilter.java:24) * at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) * at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) * at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) * at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) * at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) * at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) * at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) * at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) * at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) * at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) * at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) * at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) * at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) * at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) * at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) * at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) * at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) * at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) * at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) * at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) * at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) * at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) * at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) * at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) * at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) * at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) * at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) * at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834) * at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) * at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) * at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) * at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) * at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) * at java.lang.Thread.run(Thread.java:745) * Caused by: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'status' from result set. Cause: java.lang.IllegalArgumentException: No enum constant com.xxx.common.module.enums.StatusEnum.1 * at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:68) * at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.applyAutomaticMappings(DefaultResultSetHandler.java:520) * at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:401) * at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:355) * at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:330) * at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:303) * at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:196) * at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:64) * at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) * at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) * at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) * at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) * at java.lang.reflect.Method.invoke(Method.java:483) * at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63) * at com.sun.proxy.$Proxy200.query(Unknown Source) * at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63) * at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:326) * at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) * at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:136) * at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) * at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) * at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) * at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) * at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) * at java.lang.reflect.Method.invoke(Method.java:483) * at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) * ... 77 common frames omitted * Caused by: java.lang.IllegalArgumentException: No enum constant com.xxx.common.module.enums.StatusEnum.1 * at java.lang.Enum.valueOf(Enum.java:238) * at org.apache.ibatis.type.EnumTypeHandler.getNullableResult(EnumTypeHandler.java:49) * at org.apache.ibatis.type.EnumTypeHandler.getNullableResult(EnumTypeHandler.java:26) * at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:66) * ... 102 common frames omitted

hibernate中类not mapped问题

spring项目中,用到hibernate mapping。后台写完之后junit test可以跑通,数据库可以存取数据,但是页面数据传过来之后,hql报错。已经仔细检查过hql中是查询的是类名还是表名以及各项配置,hpl中查询的是map过的类名。单元测试跑得通,所以xml配置应该也没错。但是页面存取数据的时候会报错。仔细检查过hql的大小写,全半角以及空格是否为中文空格,依然不能解决问题。希望各路高人给指条明路,感激不尽。。 报错内容:[code=text] Caused by: org.hibernate.hql.ast.QuerySyntaxException: User is not mapped [from User where userName=?] [/code] 具体的配置如下。 实体类:[code=java] package com.huatek.cloud.usercenter.entity; import com.huatek.framework.entity.FwAccount; public class User extends FwAccount{ private static final long serialVersionUID = 6736542524764495567L; private String seqNum; //数据的序列号,数据库中主键(id)。由于BaseServiceImpl中存在id字段,故重命名 private String userName; //用户名字段。如果注册方式为邮箱则它的值为email值;注册方式为手机则值为cellphone值 private String email; //用户的邮箱地址字段 private String cellphone; //用户的手机号字段 private int regType; //用户的注册类型字段 private String password; //用户的密码字段 private int activated; //用户的“是否激活”字段 private String validateCode; //用户的激活码字段 private java.sql.Timestamp registerTime; //用户的注册时间字段 //getter、setter方法略 } [/code] 类与表的映射文件:User.hbm.xml [code=text] import 实体类所在的package; <?xml version="1.0"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping package = "com.huatek.cloud.usercenter.entity"> <class name = "User" table="t_register"> <id name="seqNum" type="java.lang.String" column="id" length="100"></id> <property name="userName" column="name" type="java.lang.String" length="30"></property> <property name="email" column="email" type="java.lang.String" length="50"></property> <property name="cellphone" column="phone" type="java.lang.String" length="11"></property> <property name="regType" column="regType" type="java.lang.Integer" length="1"></property> <property name="password" column="password" type="java.lang.String" length="50"></property> <property name="activated" column="status" type="java.lang.Integer" length="1"></property> <property name="validateCode" column="validateCode" type="java.lang.String" length="100"></property> <property name="registerTime" column="registerTime" type="java.sql.Timestamp" length="100"></property> </class> </hibernate-mapping> [/code] 配置映射文件:application-base.xml [code=text] <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="mappingLocations"> <list> <!-- base frame --> <value>classpath*:/com/huatek/framework/hibernate/maps/oracle/*.hbm.xml </value> <!-- data dictionary --> <value>classpath*:/com/huatek/dictionary/hibernate/oracle/*.hbm.xml </value> <!-- data authority --> <value>classpath*:/com/huatek/authority/hibernate/oracle/*.hbm.xml </value> <!-- cloud authority --> <value>classpath*:/com/huatek/cloud/usercenter/hibernate/mysql/*.hbm.xml </value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">${hibernate.dialect}</prop> <prop key="hibernate.show_sql">false</prop> <prop key="hibernate.format_sql">true</prop> <prop key="hibernate.generate_statistics">false</prop> <prop key="hibernate.default_batch_fetch_size">30</prop> </props> </property> <!-- <property name="lobHandler"> <ref local="oracleLobHandler" /> </property> --> <property name="eventListeners"> <map> <entry key="merge"> <bean class="org.springframework.orm.hibernate3.support.IdTransferringMergeEventListener" /> </entry> </map> </property> </bean> [/code] 服务层中的实现方法,实际是就是判断userName是否已经存在库中以实现判断用户名重复: [code=java] @Override public boolean cmpUserName(int regType, String userName) { String hql = "from User where userName=?"; @SuppressWarnings("unchecked") List<User> resultUser = hibernateTemplate.find(hql,userName); //每次debug单步跟进到这里报错 if (resultUser.isEmpty()) return userNameNotDup; else return userNameDup; } [/code]

Oil Pipeline

Description Rocky Oil owns several rectangular oil fields in which it is drilling new wells. It wants to connect all wells in a field to a single East-West pipeline using straight North-South pipes. Your task is to write a program that first finds the location of the E-W pipeline such that the total length of the N-S pipes in the field is minimal; then it must draw a map of the oil field, if possible. Each rectangular oil field is a grid 94 units long in the E-W direction and 73 units long in the N-S direction. The grid uses integer coordinates, with the SW corner at (1,1) and the NE corner at (94,73). Oil wells may be at any integer coordinates within the grid, and all wells will appear at different positions. The E-W pipeline will stretch across the entire field at an integer N-S coordinate. Wells with the same E-W coordinate share the same pipe. In case there are multiple positions for the E-W pipeline giving the same minimal length, always choose the one furthest south (i.e., with the lowest N-S coordinate). Consider the first input example below. With the E-W pipeline at 11, the well at E-W position 1 is on the pipeline and has length zero. The two wells at E-W position 69 can share a single pipe of length 18. The total length for all three wells is 18. If the E-W pipeline were at 20 there would be two N-S pipes, one of length 9 at position 1 and another of length 9 at position 69, again with a total length of 18. In fact, any E-W pipeline located from 11 to 20 results in a total length of 18, which is minimal. Since there is more than one position for the pipeline that minimizes the length, choose the southernmost position, which is 11. Any map drawn must occupy at most 69 columns and 19 rows (not counting borders and labels) so it fits on a standard-sized display. The map must include the E-W pipeline, all wells, and all N-S pipes. Only that portion of the field actually containing wells should be drawn, using the smallest bounding rectangle whose edges are multiples of 5. The E-W pipeline will always stretch across the entire map, regardless of its width. Wells must be inside the bounding rectangle, not on any of its edges. These constraints may make it impossible to draw some oil fields. The first input example shows the largest map possible. Input The input consists of data for one or more oil fields, followed by a line containing 0 0 which signals the end of the input. Data for each oil field consists of one or more pairs of positive integers, one pair per line, representing the positions of oil wells in the field. The pair -1 -1 indicates the end of the data for a field. Output For each oil field, output a line with a numbered header. Then output the map of the oil field, if possible. Otherwise, output a sentence with the location of the pipeline. Use the exact format shown below. Use '@' to represent an oil well, '*' to represent a pipe, and '.' (a period) to represent an empty grid location. Wells take precedence over pipes, so if a well and a pipe occupy the same location, use '@'. Draw a border around the mapped oil field, using '|' (a vertical bar) for N-S edges and '-' (a dash) for E-W edges, but mark every 5th grid position with '+', as shown in the examples. Label each '+' with its position in the oil field. The label for each N-S '+' comes immediately before the '+' sign. The label for the northernmost '+' must start at the beginning of the first line of output. Labels for an E-W '+' must always have the most significant digit immediately below the '+'. Contrary to the usual output conventions, some of the lines in the map will have leading blanks. Sample Input 1 11 69 29 69 20 -1 -1 35 35 -1 -1 1 1 94 73 1 73 94 1 -1 -1 2 2 3 7 4 4 6 1 -1 -1 0 0 Sample Output OIL FIELD 1 30+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ |....................................................................@| |....................................................................*| |....................................................................*| |....................................................................*| 25+....................................................................*+ |....................................................................*| |....................................................................*| |....................................................................*| |....................................................................*| 20+....................................................................@+ |....................................................................*| |....................................................................*| |....................................................................*| |....................................................................*| 15+....................................................................*+ |....................................................................*| |....................................................................*| |....................................................................*| |@********************************************************************| 10+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 OIL FIELD 2 40+----+----+ |.........| |.........| |.........| |.........| 35+****@****+ |.........| |.........| |.........| |.........| 30+----+----+ 30 35 40 OIL FIELD 3 Map is too big to draw for pipeline at 1 OIL FIELD 4 10+----+----+ |.........| |.........| |..@......| |..*......| 5+..*......+ |..*@.....| |..**.....| |*@*******| |.....@...| 0+----+----+ 0 5 10

又是这个...There is no Action mapped for namespace / and action name .

怎么老报这个错误 路径跟配置都正确啊 struts.xml也在src目录下 struts版本是2.1.6的 There is no Action mapped for namespace / and action name . - [unknown location] at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:177) at org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:61) at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39) at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:47) at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:458) at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77) at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) [code="java"]<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> <struts> <package name="struts2" extends="struts-default" namespace="/"> <action name="login" class="com.techson.action.LoginAction"> <result name="success">/result.jsp</result> <result name="input">/login.jsp</result> </action> </package> </struts> [/code] [code="java"]package com.techson.action; import com.opensymphony.xwork2.ActionSupport; @SuppressWarnings("serial") public class LoginAction extends ActionSupport { private String username; private String password; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } @Override public String execute()throws Exception{ return "success"; } } [/code] [code="java"]<%@ page language="java" import="java.util.*" pageEncoding="GBK"%> <%@ taglib prefix="s" uri="/struts-tags"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>LOGIN PAGE</title> </head> <body> <s:form action="login.action" method="post"> <s:textfield name="username" label="username"></s:textfield> <s:password name="password" label="password"></s:password> <s:submit name="submit" label="SUBMIT"></s:submit> </s:form> </body> </html> [/code] [code="java"]<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list>login.jsp</welcome-file-list> <filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter </filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping></web-app> [/code]

报错There is no Action mapped for namespace / and action name register

报错:There is no Action mapped for namespace / and action name register **struts.xml** <struts> <constant name="struts.enable.DynamicMethodInvocation" value="true"/> <package name="default" extends="struts-default"> <action name="register" class="action.RegisterAction" method="adduser"> <result name="success">/success.html</result> <result name="error">/error.html</result> </action> </package> </struts> ``` ``` ![图片说明](https://img-ask.csdn.net/upload/201902/27/1551276522_721539.png) ![图片说明](https://img-ask.csdn.net/upload/201902/27/1551276531_320048.png) ![图片说明](https://img-ask.csdn.net/upload/201902/27/1551276537_265470.png)

There is no PasswordEncoder mapped for the id "null"

``` @Override protected void configure(AuthenticationManagerBuilder auth) throws Exception { //注入userDetailsService的实现类 auth.userDetailsService(userDetailsService).passwordEncoder(new BCryptPasswordEncoder()); } ``` 为啥还在报错

java源码中一个抽象类初始化方法中包含一个super(),该怎么理解

``` package org.apache.http.params; import java.util.Set; /** * Abstract base class for parameter collections. * Type specific setters and getters are mapped to the abstract, * generic getters and setters. * * @since 4.0 * * @deprecated (4.3) use configuration classes provided 'org.apache.http.config' * and 'org.apache.http.client.config' */ @Deprecated public abstract class AbstractHttpParams implements HttpParams, HttpParamsNames { /** * Instantiates parameters. */ protected AbstractHttpParams() { super(); } @Override public long getLongParameter(final String name, final long defaultValue) { final Object param = getParameter(name); if (param == null) { return defaultValue; } return ((Long) param).longValue(); } ```

There is no Action mapped for namespace

使用的是J2EE+SHH框架, 具体代码如下: --- **struts.xml** ``` <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <constant name="struts.custom.i18n.resources" value="message" /> <constant name="struts.i18n.encoding" value="UTF-8" /> <!-- 指定Struts 2默认的ObjectFactory Bean - 交给Spring管理 --> <constant name="struts.objectFactory" value="spring" /> <!-- 开发者模式 --> <!-- <constant name="struts.devMode" value="true" /> --> <!-- 指定每次配置文件更改后,自动重新加载 --> <constant name="struts.configuration.xml.reload" value="false" /> </struts> ``` --- **applicationContext.xml** ``` **<?xml version="1.0" encoding="UTF-8"?> <!-- context是自动扫描和使用注解的上下文前缀;aop,tx是事物管理的前缀 -->** <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd" default-autowire="byName"> <!-- 采用自动扫描的方式查找bean(DAO,Service等等),多个用逗号隔开 --> <context:component-scan base-package="com.cheer.bookshop" /> <!-- 定时器任务 --> <task:annotation-driven /> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <description>配置数据源</description> <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost:3306/bookstore?useUnicode=true&amp;characterEncoding=UTF-8"></property> <property name="username" value="root"></property> <property name="password" value="123456"></property> <!-- 初始化连接数量 --> <property name="initialSize" value="1"/> <!-- 最大活动连接数量,一般等于数据库的最大并发数 --> <property name="maxActive" value="100"/> <!-- 最大空闲(等待)连接数量 --> <property name="maxIdle" value="-1"/> <!-- 最小空闲(等待)连接数量 --> <property name="minIdle" value="0"/> <!-- 获取连接时等待时间,超出将抛异常,单位毫秒 --> <property name="maxWait" value="10000"/> </bean> <!-- 配置hibernate session工厂 --> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <description>将数据源注入到sessionFactory,使用注解方式</description> <property name="dataSource" ref="dataSource"></property> <!-- 配置hibernate的一些属性 --> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.format_sql">true</prop> <prop key="hibernate.current_session_context_class">thread</prop> <prop key="hibernate.connection.release_mode">after_transaction</prop><!-- 释放session --> </props> </property> <!-- 自动扫描注解方式配置的hibernate映射文件(实体类) --> <property name="packagesToScan"> <list> <value>com.cheer.bookshop.Model</value> </list> </property> </bean> <!-- 定义事务管理器 --> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <description> 增加事务管理</description> <property name="sessionFactory" ref="sessionFactory" /> </bean> <!-- 拦截器方式配置事务特性 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> </tx:attributes> </tx:advice> <!-- 给business配置事务管理 --> <aop:config proxy-target-class="true"> <aop:pointcut id="allManagerMethod" expression="execution (* com.cheer.bookshop.*.*(..))" /> <aop:advisor advice-ref="txAdvice" pointcut-ref="allManagerMethod" /> </aop:config> </beans> ``` --- **JSP页面登陆Form表单** ``` <s:form action="userlogin.action" method="post"> <p><font color="red">&nbsp;&nbsp;&nbsp;${msg}</font></p> <div class="form_row"> <label class="contact"><strong>Username:</strong></label> <input type="text" class="contact_input" name="user.username" value="${user.username}"/> </div> <div class="form_row"> <label class="contact"><strong>Password:</strong></label> <input type="password" class="contact_input" name="user.password" value="${user.password}"/> </div> <div class="form_row"> <div class="terms"> <input type="checkbox" name="terms" /> Remember me </div> </div> <div class="form_row"> <input type="submit" class="register" value="login" /> </div> </s:form> ``` --- **Action类** ``` package com.cheer.bookshop.action; import java.io.IOException; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts2.ServletActionContext; import org.apache.struts2.convention.annotation.Action; import org.apache.struts2.convention.annotation.Namespace; import org.apache.struts2.convention.annotation.Result; import com.cheer.bookshop.Model.User; import com.cheer.bookshop.service.impl.UserServiceImpl; import com.opensymphony.xwork2.ActionSupport; @Namespace("/") public class UserAction extends ActionSupport { @Resource private UserServiceImpl userServiceImpl; private User user; private String msg; //用户登录 @Action(value = "userlogin", results = {@Result(name = "success", location = "/index.jsp"), @Result(name = "input", location = "/jsp/user/myaccount.jsp", type = "redirect") }) public String login(){ User userdb = userServiceImpl.login(user.getUsername()); if(userdb != null){ String password = user.getPassword(); if(password.equals(userdb.getPassword())){ user=userdb; return SUCCESS; }else{ msg="密码错误,请重新输入!"; return INPUT; } }else{ msg="用户名不存在,请注册!"; return INPUT; } } //用户注册 @Action(value = "userregister", results = {@Result(name = "success", location = "/jsp/user/myaccount.jsp", type = "redirect") }) public String register(){ userServiceImpl.register(user); return SUCCESS; } //验证用户名是否已经被使用 @Action(value = "validateUsername") public String validateUsername() throws IOException{ HttpServletRequest request = ServletActionContext.getRequest(); HttpServletResponse response = ServletActionContext.getResponse(); response.setContentType("text/html;charset=UTF-8"); String username = request.getParameter("username"); boolean flag = userServiceImpl.validateUsername(username); if(flag){ response.getWriter().println("<p><font color='red'>用户名已经存在</font></p>"); }else{ response.getWriter().println("<p><font color='green'>用户名可以使用</font></p>"); } return NONE; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } } ``` --- 如上,Action有配置userlogin,登陆页form表单提交路径也是一样,单就是无法调整至aciton里,eclipse也没有报错,该如何解决? There is no Action mapped for namespace / and action name userlogin.

HTTP Status 404 - There is no Action mapped for action name addBook.

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hibernate注入映射可以save(),但是查询报is not mapped错误

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