Mybatis生成的实体类和Mapper.java类报错

在使用Mybatis生成代码之后出现了问题,所有标识符报错,重新生成也不行
报错提示:
Duplicate field DataOfTarget.itemCode
所有的类型的标识符都报错,没出现重复的情况

图片说明

都像这样,提示让重命名,可是几十个字段呢,而且这样传出的数据也不规范

3个回答

1.看看类里面有没有重复的。getter setter 字段都看看
2.留一个字段,把其他字段都删除了,看还报不报

有没有继承别的mapper

自己新建一个类,然后这样命名也报错么?

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mapper.xml报找不到对应的实体类
``` 严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in URL [file:/D:/work/Tomcat/apache-tomcat-8.0.52/webapps/sc/WEB-INF/classes/applicationContext-mybatis.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [D:\work\Tomcat\apache-tomcat-8.0.52\webapps\sc\WEB-INF\classes\com\ultra\sc\mapper\CodeBaseMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.ultra.sc.model.CodeBase'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.ultra.sc.model.CodeBase at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:742) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:443) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:325) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4900) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5363) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1410) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1400) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [D:\work\Tomcat\apache-tomcat-8.0.52\webapps\sc\WEB-INF\classes\com\ultra\sc\mapper\CodeBaseMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.ultra.sc.model.CodeBase'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.ultra.sc.model.CodeBase at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:523) at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:380) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ... 21 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.ultra.sc.model.CodeBase'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.ultra.sc.model.CodeBase at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120) at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92) at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:521) ... 24 more Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.ultra.sc.model.CodeBase'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.ultra.sc.model.CodeBase at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:118) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:265) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:252) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:244) at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:116) ... 26 more Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.ultra.sc.model.CodeBase'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.ultra.sc.model.CodeBase at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:120) at org.apache.ibatis.builder.BaseBuilder.resolveAlias(BaseBuilder.java:149) at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:116) ... 30 more Caused by: java.lang.ClassNotFoundException: Cannot find class: com.ultra.sc.model.CodeBase at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:200) at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:89) at org.apache.ibatis.io.Resources.classForName(Resources.java:261) at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:116) ... 32 more ``` 报找不到codeBase类,项目里可以找到,把mapper.xml里面的resultMap删了之后继续报下一个mapper.xml同样的错 同样的代码,其他同事的不报错 mapper.xml ![图片说明](https://img-ask.csdn.net/upload/201812/19/1545202008_405611.png) ![图片说明](https://img-ask.csdn.net/upload/201812/19/1545202091_365259.png) ![图片说明](https://img-ask.csdn.net/upload/201812/19/1545202142_712030.png)
将mybatis改成无实体类
因为mybatis 的 mapper与实体类映射,如果修改数据库字段的时候很麻烦,我想把mybatis的与实体类映射去掉,返回List<HashMap<String,Object>>或者HashMap,要怎么改?如果能保留mybatis中的mapper.xml一些特性就更好了。 除了 解析xml拿到sql的id,再通过jdbc去执行sql以外,还有其它更方便的么?
maven项目 mybatis generator运行报错。。。。在线急等!!!
执行maven命令:mybatis-generator:generate -e 时报如下错误: Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-cli of goal org.mybatis.generator:mybatis-generator-maven-plugin:1.3.2:generate failed: Cannot instantiate object of type com.dream.utils.mybatis.type.CustomJavaTypeResolver at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:143) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208) ... 25 more Caused by: java.lang.RuntimeException: Cannot instantiate object of type com.dream.utils.mybatis.type.CustomJavaTypeResolver at org.mybatis.generator.internal.ObjectFactory.createInternalObject(ObjectFactory.java:184) at org.mybatis.generator.internal.ObjectFactory.createJavaTypeResolver(ObjectFactory.java:207) at org.mybatis.generator.config.Context.introspectTables(Context.java:429) at org.mybatis.generator.api.MyBatisGenerator.generate(MyBatisGenerator.java:222) at org.mybatis.generator.maven.MyBatisGeneratorMojo.execute(MyBatisGeneratorMojo.java:203) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132) ... 26 more Caused by: java.lang.ClassNotFoundException: com.dream.utils.mybatis.type.CustomJavaTypeResolver at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50) at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:259) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:235) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:227) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:266) at org.mybatis.generator.internal.ObjectFactory.internalClassForName(ObjectFactory.java:150) at org.mybatis.generator.internal.ObjectFactory.createInternalObject(ObjectFactory.java:180) ... 31 more 但这个类是存在的。
Spring3整合Mybatis3+mybatis-spring1.x查询报错
我在进行Spring(V:3.2.3.RELEASE)+mybatis(V:3.2.4)+mybatis-spring(V:1.1.1)整合。有一个ClassRoom班级类: //班级id private int classId; //班级编码 private String classCode; //班级名字 private String className; //所属学院 private College college; //标记 private int flag; 学院类College属性是: private int collegeId; private String collegeCode; private String collegeName; private int flag; ClassRoomMapper.xml配置如下: <resultMap type="com.yao.model.ClassRoom" id="ClassRoomMap"> <id column="class_id" property="classId"/> <result column="class_code" property="classCode"/> <result column="class_name" property="className"/> <result column="class_flag" property="flag"/> <!-- <association property="college" javaType="com.yao.model.College" column="college" select="com.yao.dao.CollegeDao.loadByCode" /> --> <association property="college" javaType="com.yao.model.College"> <id column="college_id" property="collegeId"/> <result column="college_code" property="collegeCode"/> <result column="college_name" property="collegeName"/> <result column="college_flag" property="flag"/> </association> </resultMap> 查询班级信息语句如下: <select id="loadByCode" resultMap="ClassRoomMap"> select t.class_id, t.class_code,t.class_name, t.flag as 'class_flag',t2.college_code, t2.college_id, t2.college_name, t2.flag as 'college_flag' from t_class t left join t_college t2 on t.college =t2.college_code where t.class_code = #{classCode} </select> beans.xml中配置ClassDao如下: <bean id="classRoomDao" class="org.mybatis.spring.mapper.MapperScannerConfigurer" scope="prototype"> <property name="mapperInterface" value="com.yao.dao.ClassRoomDao"></property> <property name="sqlSessionFactory" ref="sqlSessionFactory"></property> </bean> 在进行查询(loadByCode) 的时候报错如下: Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'classRoomDao' defined in class path resource [applicationContext.xml]: Cannot resolve reference to bean 'sqlSessionFactory' while setting bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis-config.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalStateException: Type handler was null on parameter mapping for property 'college'. It was either not specified and/or could not be found for the javaType / jdbcType combination specified. 请问这是什么原因呢?还需要重新写college与数据库字段对应的关系吗?我已经在association中增加了对应字段的配置。
web项目启动报错。mapper 有问题
``` Caused by: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.komlin.modular.checkon.mapper.CheckOnMapper.BaseResultMap at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:782) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:754) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.session.Configuration.addResultMap(Configuration.java:536) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.builder.MapperBuilderAssistant.addResultMap(MapperBuilderAssistant.java:207) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.builder.ResultMapResolver.resolve(ResultMapResolver.java:47) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:284) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:251) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:243) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:116) ~[mybatis-3.2.8.jar:3.2.8] at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92) ~[mybatis-3.2.8.jar:3.2.8] at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:464) ~[mybatis-spring-1.2.2.jar:1.2.2] at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:340) ~[mybatis-spring-1.2.2.jar:1.2.2] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE] ... 57 more ```
springboot 整合mybatis 报错提示包扫描不进去
![图片说明](https://img-ask.csdn.net/upload/201908/14/1565777159_224084.png) ``` package com.liupeng; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import tk.mybatis.spring.annotation.MapperScan; @SpringBootApplication() @MapperScan(basePackages = "com.liupeng.mapper") public class Application { public static void main(String[] args) { SpringApplication.run(Application.class,args); } } ``` ``` package com.liupeng.service; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.liupeng.mapper.UserMapper; import com.liupeng.pojo.User; @Service(value = "Userservice") public class UserServiceImpl implements Userservice { @Autowired private UserMapper userMapper; @Override public User getNamePassword(User user) { // TODO Auto-generated method stub return userMapper.selectgetNamePassword(user); } @Override public void saveUser(User user) { // TODO Auto-generated method stub } } ``` mapper.xml ``` <?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"> <mapper namespace="com.liupeng.mapper.UserMapper"> ``` ``` #------------------配置虚拟文件路径--start------------------------------ spring.http.multipart.location=E:\Java\java代码\Chaoyang\src\main\resources #-----------------------------------------数据库--start---------------------- spring.datasource.driver-class-name=com.mysql.cj.jdbc.Drive spring.datasource.url=jdbc:mysql://localhost:3306/ssm_mybatis?serverTimezone=GMT spring.datasource.username=root spring.datasource.password=liupeng.123 spring.datasource.druid.stat-view-servlet.allow=true #获取连接等待超时时间 spring.datasource.dbcp2.max-wait-millis=60000 #mybatis配置 mybatis.type-aliases-package=com.liupeng.pojo mybatis.mapper-locations=classpath:mapper/*.xml #通用Mapper配置 #mapper.mappers=com.liupeng.utils.MyMapper #mapper.not-empty=false #mapper.identity=MYSQL #分页插件配置 pagehelper.helperDialect=mysq1 pagehelper.reasonable=true pagehelper.supportMethodsArguments=true pagehelper.params=count=countSql #文件上传配置 spring.http.multipart.maxFileSize=100Mb spring.http.multipart.maxRequestSize=1000Mb #配置api端口号 server.port=8080 #tomcat的URI编码 server.tomcat.uri-encoding=UTF-8 ``` ``` ERROR [main] - Application startup failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'registLoginController': Unsatisfied dependency expressed through field 'userservice'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'Userservice': Unsatisfied dependency expressed through field 'userMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file [E:\Java\java代码\Chaoyang\target\classes\com\liupeng\mapper\UserMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [tk/mybatis/mapper/autoconfigure/MapperAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:364) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1268) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:756) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:123) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:666) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:353) at org.springframework.boot.SpringApplication.run(SpringApplication.java:300) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1082) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1071) at com.liupeng.Application.main(Application.java:13) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'Userservice': Unsatisfied dependency expressed through field 'userMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file [E:\Java\java代码\Chaoyang\target\classes\com\liupeng\mapper\UserMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [tk/mybatis/mapper/autoconfigure/MapperAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:364) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1268) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:211) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1131) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1059) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:583) ... 19 more Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userMapper' defined in file [E:\Java\java代码\Chaoyang\target\classes\com\liupeng\mapper\UserMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [tk/mybatis/mapper/autoconfigure/MapperAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1361) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1253) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:211) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1131) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1059) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:583) ... 32 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [tk/mybatis/mapper/autoconfigure/MapperAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1177) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1072) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:511) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:481) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:211) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1131) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1059) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1346) ... 43 more Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ... 55 more Caused by: org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\Java\java代码\Chaoyang\target\classes\mapper\UserMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:523) at org.mybatis.spring.SqlSessionFactoryBean.afterPropertiesSet(SqlSessionFactoryBean.java:380) at org.mybatis.spring.SqlSessionFactoryBean.getObject(SqlSessionFactoryBean.java:547) at tk.mybatis.mapper.autoconfigure.MapperAutoConfiguration.sqlSessionFactory(MapperAutoConfiguration.java:155) at tk.mybatis.mapper.autoconfigure.MapperAutoConfiguration$$EnhancerBySpringCGLIB$$90d064bb.CGLIB$sqlSessionFactory$1(<generated>) at tk.mybatis.mapper.autoconfigure.MapperAutoConfiguration$$EnhancerBySpringCGLIB$$90d064bb$$FastClassBySpringCGLIB$$b0514ca6.invoke(<generated>) at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) at tk.mybatis.mapper.autoconfigure.MapperAutoConfiguration$$EnhancerBySpringCGLIB$$90d064bb.sqlSessionFactory(<generated>) 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.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ... 56 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120) at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92) at org.mybatis.spring.SqlSessionFactoryBean.buildSqlSessionFactory(SqlSessionFactoryBean.java:521) ... 69 more Caused by: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.liupeng.mapper.UserMapper.BaseResultMap at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:872) at org.apache.ibatis.session.Configuration$StrictMap.put(Configuration.java:844) at org.apache.ibatis.session.Configuration.addResultMap(Configuration.java:626) at org.apache.ibatis.builder.MapperBuilderAssistant.addResultMap(MapperBuilderAssistant.java:214) at org.apache.ibatis.builder.ResultMapResolver.resolve(ResultMapResolver.java:47) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:285) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElement(XMLMapperBuilder.java:252) at org.apache.ibatis.builder.xml.XMLMapperBuilder.resultMapElements(XMLMapperBuilder.java:244) at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:116) ... 71 more ```
maven管理多个模块mybatis的resource下的Mapper.xml
无法获取到其他模块下的resource的Mapper.xml文件 web的resources下的可以获取到而不在web的获取不到 ![图片说明](https://img-ask.csdn.net/upload/201701/23/1485157672_965814.jpg) ![图片说明](https://img-ask.csdn.net/upload/201701/23/1485157683_434836.jpg) ![图片说明](https://img-ask.csdn.net/upload/201701/23/1485157693_183420.jpg)
mybatis 报ExecutorException: Executor was closed.
在同一个方法里面,有两步update数据库操作,分别是库中的两张表,但这两步是一个完整事务,第一步update成功了,第二步就报了这个错误 请高手帮忙看下,可能是什么原因? 报错如下: Caused by: org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. C ause: org.apache.ibatis.executor.ExecutorException: Executor was closed. ### The error may exist in file [/export/App/transfer.support.ws.aa.com/WEB-INF/classes/mapper/order/Order.xml] ### The error may involve com.aa.bb.ts.support.server.dao.mapper.OrderMapper.updateOrderById ### The error occurred while executing an update ### Cause: org.apache.ibatis.executor.ExecutorException: Executor was closed. at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:147) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.aa.bb.common.db.mybaties.SqlSessionInterceptor.doInvoke(SqlSessionInterceptor.java:204) at com.aa.bb.common.db.mybaties.SqlSessionInterceptor.invoke(SqlSessionInterceptor.java:173) at $Proxy39.update(Unknown Source) at com.aa.bb.common.db.mybaties.SqlSessionTemplate.update(SqlSessionTemplate.java:147) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40) at $Proxy42.updateOrderById(Unknown Source) at com.aa.bb.ts.support.server.core.service.impl.OrderAndDetailServiceImpl.updateOrderById(OrderAndDetailServiceImpl.java:134) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196) at $Proxy45.updateOrderById(Unknown Source) at com.aa.bb.ts.support.server.core.service.impl.AntiAndOrderServiceImpl.cancelAntiAndOrderById(AntiAndOrderServiceImpl.java:131) ... 39 more Caused by: org.apache.ibatis.executor.ExecutorException: Executor was closed. at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:106) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:145) ... 59 more
请教一下,到底我的mapper.xml哪里出错了,弄不明白为什么找不到我写的log类
## update一下经大佬提点后如何解决的 可能因为我曾用粗暴的方法改动过Log.java的类名,导致Log类编译出问题了,编译后类文件夹内根本没有Log.class文件。于是我又粗暴地delete了Log类重写了一次,果然没问题了。 顺便百度了一下如何修改类名 https://zhidao.baidu.com/question/340215163.html ## 原问题如下 小白入门程序媛,这个是一个mybatis的关于银行转账的小练习 在写log部分之前,我写的account部分测试过是没有问题的,转账的业务也成功了的。现在是想增加一个记录日志的操作,在数据库log表格添加转账记录,并且利用log4j在硬盘生成log file中记录转账信息。 可是按照同样的套路写了了log实体类后再写logmapper.xml,却出现了以下的错误,后来干脆连mybatis中的别名的部分都去掉了,直接在mapper.xml中使用完整的类名,还是说找不到我写的log类。实在搞不懂是namespace出错了还是怎么滴。。。。 ## 错误信息如下: ``` 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server version: Apache Tomcat/8.5.42 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server built: Jun 4 2019 20:29:04 UTC 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Server number: 8.5.42.0 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Name: Windows 10 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: OS Version: 10.0 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Architecture: amd64 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Java Home: C:\Program Files\Java\jdk1.8.0_201\jre 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM Version: 1.8.0_201-b09 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: JVM Vendor: Oracle Corporation 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_BASE: D:\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: CATALINA_HOME: D:\apache-tomcat-8.5.42 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.base=D:\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dcatalina.home=D:\apache-tomcat-8.5.42 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dwtp.deploy=D:\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Djava.endorsed.dirs=D:\apache-tomcat-8.5.42\endorsed 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.VersionLoggerListener log 信息: Command line argument: -Dfile.encoding=UTF-8 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: Loaded APR based Apache Tomcat Native library [1.2.21] using APR version [1.6.5]. 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.AprLifecycleListener lifecycleEvent 信息: APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.AprLifecycleListener initializeSSL 信息: OpenSSL successfully initialized [OpenSSL 1.1.1a 20 Nov 2018] 七月 13, 2019 8:47:00 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["http-nio-8080"] 七月 13, 2019 8:47:00 下午 org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 信息: Using a shared selector for servlet write/read 七月 13, 2019 8:47:00 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["ajp-nio-8009"] 七月 13, 2019 8:47:00 下午 org.apache.tomcat.util.net.NioSelectorPool getSharedSelector 信息: Using a shared selector for servlet write/read 七月 13, 2019 8:47:00 下午 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 828 ms 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.StandardService startInternal 信息: Starting service [Catalina] 七月 13, 2019 8:47:00 下午 org.apache.catalina.core.StandardEngine startInternal 信息: Starting Servlet Engine: Apache Tomcat/8.5.42 七月 13, 2019 8:47:01 下午 org.apache.jasper.servlet.TldScanner scanJars 信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. 七月 13, 2019 8:47:02 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["http-nio-8080"] 七月 13, 2019 8:47:02 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["ajp-nio-8009"] 七月 13, 2019 8:47:02 下午 org.apache.catalina.startup.Catalina start 信息: Server startup in 1377 ms 七月 13, 2019 8:47:32 下午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [yan.ibbie.servlet.TransferServlet] in context with path [/bank] threw exception org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### The error may exist in yan/ibbie/mapper/logmapper.xml ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'yan/ibbie/mapper/logmapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:80) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:64) at yan.ibbie.service.Impl.AccountServiceImpl.transfer(AccountServiceImpl.java:23) at yan.ibbie.servlet.TransferServlet.service(TransferServlet.java:36) 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:52) 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:493) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:808) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'yan/ibbie/mapper/logmapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:121) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parse(XMLConfigBuilder.java:99) at org.apache.ibatis.session.SqlSessionFactoryBuilder.build(SqlSessionFactoryBuilder.java:78) ... 26 more Caused by: org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'yan/ibbie/mapper/logmapper.xml'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:120) at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:92) at org.apache.ibatis.builder.xml.XMLConfigBuilder.mapperElement(XMLConfigBuilder.java:373) at org.apache.ibatis.builder.xml.XMLConfigBuilder.parseConfiguration(XMLConfigBuilder.java:119) ... 28 more Caused by: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:118) at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:68) at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:135) at org.apache.ibatis.builder.xml.XMLMapperBuilder.buildStatementFromContext(XMLMapperBuilder.java:128) at org.apache.ibatis.builder.xml.XMLMapperBuilder.configurationElement(XMLMapperBuilder.java:118) ... 31 more Caused by: org.apache.ibatis.type.TypeException: Could not resolve type alias 'yan.ibbie.pojo.Log'. Cause: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:120) at org.apache.ibatis.builder.BaseBuilder.resolveAlias(BaseBuilder.java:149) at org.apache.ibatis.builder.BaseBuilder.resolveClass(BaseBuilder.java:116) ... 35 more Caused by: java.lang.ClassNotFoundException: Cannot find class: yan.ibbie.pojo.Log at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:200) at org.apache.ibatis.io.ClassLoaderWrapper.classForName(ClassLoaderWrapper.java:89) at org.apache.ibatis.io.Resources.classForName(Resources.java:261) at org.apache.ibatis.type.TypeAliasRegistry.resolveAlias(TypeAliasRegistry.java:116) ... 37 more ``` ## mybatis.xml如下: ``` <?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> <settings> <setting name="logImpl" value="LOG4J"/> </settings> <!-- default填默认使用的environment的id --> <environments default="default"> <!-- environment标签声明一个环境 --> <environment id="default"> <!-- type="JDBC"表示使用原生JDBC事务 --> <transactionManager type="JDBC"></transactionManager> <dataSource type="POOLED"> <property name="driver" value="com.mysql.cj.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/ssm?serverTimezone=GMT%2B8"/> <property name="username" value="root"/> <property name="password" value="1233210"/> </dataSource> </environment> </environments> <mappers> <mapper resource="yan/ibbie/mapper/accountmapper.xml"/> <mapper resource="yan/ibbie/mapper/logmapper.xml"/> </mappers> </configuration> ``` ## accountmapper.xml如下: ``` <?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"> <mapper namespace="yan.ibbie.mapper.accountmapper"> <!-- 根据账号和密码查询账户信息 --> <select id="selByAccnoPassword" resultType="yan.ibbie.pojo.Account" parameterType="yan.ibbie.pojo.Account"> select * from account where accno=#{accNo} and password=#{password} </select> <!-- 根据账号和姓名查询账户信息 --> <select id="selByAccnoName" resultType="yan.ibbie.pojo.Account" parameterType="yan.ibbie.pojo.Account"> select * from account where accno=#{accNo} and name=#{name} </select> <!-- 根据账号修改账户余额 --> <update id="updBalanceByAccno" parameterType="yan.ibbie.pojo.Account"> update account set balance=balance+#{balance} where accno=#{accNo} </update> </mapper> ``` ## logmapper.xml如下: ``` <?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"> <mapper namespace="yan.ibbie.mapper.logmapper"> <insert id="insLog" parameterType="yan.ibbie.pojo.Log"> insert into log values(default,#{accOut},#{accIn},#{money}) </insert> </mapper> ``` ## yan.ibbie.pojo.log如下 ``` package yan.ibbie.pojo; 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