Error creating bean with name 'org.springframework.validation.beanvalidation.Loc_course

求大神解决 Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error crea

新人求大神解惑，关于mybatis结果集对象中包含List<String>属性_course

如题，实体类对象中有两个属性： ``` private List<String> loanamt; private List<String> signedTime; 之前在网上找到资料，采用了以下的形式进行一对多封装 <resultMap type="domain.ReportVO" id="ReportSellerMap" autoMapping="true"> <id column="SELLERNO" property="sellerNo"/> <result column="SELLERNAME" property="sellerName" /> <collection property="loanamt" ofType="string"> <constructor> <arg column="LOANAMT"/> </constructor> </collection> <collection property="signedTime" ofType="string"> <constructor> <arg column="SIGNEDTIME"/> </constructor> </collection> </resultMap> ``` ``` 采用了构造器注入的方式来实现List<String>的封装，结果却发现，loanamt属性中因为出现了数据丢失，后来发现丢失的是重复的数据，里面无法封装相同的字符串，请大神帮忙解惑

Mybatis找不到实体类,设么原因啊_course

<mapper namespace="com.js.mybatis.User"> <select id="listAll" resultType="com.js.mybatis.User"> select * user_c </select> <insert id="create" parameterType="User"> insert into user_c (id,name) values(#{id},#{name}) </insert> <update id="update" parameterType="User"> update user_c set id=#{id},name=#{name} </update> <delete id="delete" parameterType="User"> delete from user_c where id=#{id} </delete> </mapper> @Test public void testlistAll() { SqlSession session=sqlSessionFactory.openSession(); List<User> users=session.selectList("com.js.mybatis.User.listAll"); System.out.println(users.size()); } 运行一直显示找不到User类,为什么啊,求大神指点

mybatis里xml中sql数据返回包含普通对象和list对象 应该如何设置resulttype_course

mybatis里面 映射器xml中sql语句 如果数据返回类型包含普通对象和list对象 应该如何设置resulttype呢？

mybatis 映射器是什么 望大神解惑_course

mybatis 映射器是什么 望大神解惑 希望大神解释的详细一点 谢谢

mybatis返现工程去掉表名前缀_course

求大神赐教，mybatis反向工程怎么去掉表名前缀，比如所有表都有tb_前缀，怎么全部去掉，不希望一个一个的表映射，我要一个table元素完成对所有表的映射并且去掉表名前缀，我看到很逗都是去掉字段前缀的答案。

请问springboot+mybatis返回map类型时下划线怎么转驼峰命名？_course

有大佬有这方面的资料吗？ 今天找了一个不用写拦截器的，但是没起到作用..

使用spring+Mybatis 注解无效_course

使用spring+Mybatis，使用spring注解，一直报空指针异常，各位麻烦看看 这个spring文件 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <!-- 使用注解式注入 --> <context:annotation-config /> <context:component-scan base-package="com/springMyBatis/system/service/*"/> <context:component-scan base-package="com/springMyBatis/system/dao/*"/> <!-- 配置数据源--> <import resource="application-db.xml" /> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource"> <ref bean="jdbcDataSource" /> </property> <!-- MyBatis 的 XML 配置文件路径 --> <property name="configLocation" value="classpath:com/springMyBatis/Mybatis.xml" /> <!-- 扫描自动生成的xml文件 --><!-- Mybatis XML映射文件 --> <property name="mapperLocations"> <list><!-- Mybatis XML映射文件 --> <value>classpath*:com/springMyBatis/system/mapper/*.xml</value> </list> </property> </bean> <!-- 扫描mybatisGenerator 自动生成的 所有接口--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com/springMyBatis/system/dao"></property> </bean> <!-- 事务管理 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="jdbcDataSource" /> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="annotationClass" value="org.springframework.stereotype.Repository"/> <property name="basePackage" value="com.springMyBatis.system"/> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> </bean> </beans> Mybatis配置文件 <?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> <!-- 全局映射器启用缓存 --> <setting name="cacheEnabled" value="false" /> <!-- 查询时，关闭关联对象即时加载以提高性能 --> <setting name="lazyLoadingEnabled" value="false" /> <!-- 设置关联对象加载的形态，此处为按需加载字段(加载字段由SQL指定)，不会加载关联表的所有字段，以提高性能 --> <setting name="aggressiveLazyLoading" value="false" /> <!-- 对于未知的SQL查询，允许返回不同的结果集以达到通用的效果 --> <setting name="multipleResultSetsEnabled" value="true" /> <!-- 允许使用列标签代替列名 --> <setting name="useColumnLabel" value="true" /> <!-- 允许使用自定义的主键值(比如由程序生成的UUID 32位编码作为键值)，数据表的PK生成策略将被覆盖 --> <!-- <setting name="useGeneratedKeys" value="true" /> --> <!-- 给予被嵌套的resultMap以字段-属性的映射支持 --> <!-- <setting name="autoMappingBehavior" value="FULL" /> --> <!-- 对于批量更新操作缓存SQL以提高性能 --> <setting name="defaultExecutorType" value="BATCH" /> <!-- 数据库超过25000秒仍未响应则超时 --> <!-- <setting name="defaultStatementTimeout" value="25000" /> --> </settings> </configuration> DAO层接口 package com.springMyBatis.system.dao; import java.util.List; import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Transactional; import com.springMyBatis.system.model.User; @Repository @Transactional public interface UserDao { public List<User> selectAllUser(); } mapper.xml文件 <?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.springMyBatis.system.dao.UserDao"> <select id="selectAllUser" resultType="com.springMyBatis.system.model.User"> select * from user </select> </mapper> service层文件 package com.springMyBatis.system.service; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.stereotype.Controller; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import com.springMyBatis.system.dao.UserDao; import com.springMyBatis.system.model.User; @Service public class Select { @Autowired private UserDao userdao; public List<User> selectAllUser(){ System.out.println(userdao); List<User> list=userdao.selectAllUser(); return list; } userdao一直为空，求大神指导下

MyBatis通过xml文件配置DAO层Mapper出错_course

    我把xml放在相同路径下，并且xml文件的名称也相同，就是出错，有谁知道这个么？万分感激！

mybatis 查询返回java.util.HashMap 类型的数据_course

Map<String, Object> Object 可以是List[String] 例： { "name":"", "pwd":"", "log":["","",""] }

mybatis的配置映射器的问题_course

mybatis配置映射器 可以通过xml和接口的方式 或者在接口使用注解的方式配置， 使用xml和接口的方式配置的话，首先在mybatis的配置文件mappers标签有配置xml 文件位置，然后xml中有namespace对应接口文件，这样几个文件就对应起来了。 那么如果使用接口加注解方式配置映射器，mybatis该如何配置呢？mybatis是如何配置 这个接口的啊？   

SSM配置扫描不到mapper映射文件_course

 用上面的方式扫描映射文件扫描不到，但是mapper文件没有错，访问结果如下 但是我用注解的方式去写没有问题 求解答

mybatis-plus生成实体类问题_course

我的数据库表名为sys_user,通过mybatis-plus生成实体类名称为user。我的意愿是让它生成名为SysUser的实体类。 我应该在配置策略中添加什么？

mybatis的typehandler配置的问题_course

mybatis使用自带的typehandler的时候，在映射器xml中是不用在resultMap标签中定义 类型转换器标识的，只有自己重新写typehandler的时候才需要在映射器xml中重新定义 类型转换器标识，那么使用自带的typehandler的时候，既然没有在映射器xml配置，那么他到底 是在哪里配置的啊  

ibatis 返回map 类型的结果 map key 大小写设置_course

ibatis 返回map 类型的结果 map key 大小写设置 sql中 是小写形式 orcale中 又是大些的 key 有没有设置能统一大小写哦？

mybatis的databaseIdProvider的问题_course

mybatis的映射器xml中是如何从databaseId="mysql"一步步找到数据库配置的jdbc.type=mysql的(并不确定是找的jdbc.type，只是推测)，还有那个设置的value是不是就是databaseId？    

[新手求助]spring整合mybatis时自动扫描错误_course

 错误提示： Error creating bean with name 'org.mybatis.spring.mapper.MapperScannerConfigurer#0' defined in class path resource [config/applicationContext.xml] [application.xml配置文件如下] <?xml version="1.0" encoding="UTF-8"?> <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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!-- 整合连接池druid：配置DataSource --> <bean name="datasource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="driver" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/test"/> <property name="username" value="root" /> <property name="password" value="root" /> </bean> <!-- 整合MyBatis框架,配置sqlSessionFatory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="mapperLocations" value="classpath:config/UserMapper.xml" /> <property name="configLocation" value="classpath:config/mybatis-config.xml" /> <property name="dataSource" ref="dataSource" /> </bean> <!-- 自动扫描注入 :此处有问题--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="org.spring.service"/> <property name="sqlSessionFactory" value="sqlSessionFactory" /> </bean> </beans> [web.xml配置如下] <?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" 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_3_0.xsd"> <!-- 整合监听器log4j --> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath:config/log4j.properties</param-value> </context-param> <!-- 整合SpringMVC --> <servlet> <servlet-name>DispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:config/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>DispatcherServlet</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <!-- 整合Spring --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:config/applicationContext.xml</param-value> </context-param> <!-- 字符集过滤器 --> <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 会话有效期(单位：分钟) --> <session-config> <session-timeout>15</session-timeout> </session-config> </web-app> [serviceimpl如下] package org.spring.service.impl; import java.util.List; import org.mybatis.dao.UserDao; import org.mybatis.model.User; import org.spring.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service(value = "userService") public class UserServiceImpl implements UserService { @Autowired public UserDao userDao; @Override public boolean register(User model) { return userDao.register(model); } @Override public boolean login(User model) { return userDao.login(model); } @Override public List<User> findByXXX(User model) { return userDao.findByXXX(model); } } 求大神指点!!!

mybatis-plus 自动生成代码问题，生成的jdbcType不能被识别？_course

使用mybatis-plus自动生成代码，xml中默认是不生成jdbcType的，我修改的模板文件，增加了jdbcType列，但是生成的jdbcType识别不了。  比如，生成bigint(20)，其实应该是BIGINT。是不是哪里需要配置一下？

MyBatis与Oracle连接问题 _course

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. Cause: java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection ### Cause: java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:200) at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:185) at org.fkit.test.MyBatisTest.main(MyBatisTest.java:23) Caused by: java.sql.SQLException: Io 异常: The Network Adapter could not establish the connection at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:189) at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:231) at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:345) at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:428) at oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:515) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:345) at java.sql.DriverManager.getConnection(Unknown Source) at java.sql.DriverManager.getConnection(Unknown Source) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:201) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection(UnpooledDataSource.java:196) at org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection(UnpooledDataSource.java:93) at org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection(PooledDataSource.java:385) at org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection(PooledDataSource.java:89) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.openConnection(JdbcTransaction.java:138) at org.apache.ibatis.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:60) at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:336) at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:84) at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:49) at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117) at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198) ... 2 more ```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"> <!-- XML 配置文件包含对 MyBatis 系统的核心设置 --> <configuration> <!-- 指定 MyBatis 所用日志的具体实现 --> <settings> <setting name="logImpl" value="LOG4J"/> </settings> <environments default="development"> <!-- 环境配置，即连接的数据库。 --> <environment id="development"> <!-- 指定事务管理类型，type="JDBC"指直接简单使用了JDBC的提交和回滚设置 --> <transactionManager type="JDBC"/> <!-- dataSource指数据源配置，POOLED是JDBC连接对象的数据源连接池的实现。 --> <dataSource type="POOLED"> <property name="driver" value="oracle.jdbc.driver.OracleDriver"/> <property name="url" value="jdbc:oracle:thin:@192.168.*.*:1521:orcl"/> <property name="username" value="sm"/> <property name="password" value="123456"/> </dataSource> </environment> </environments> <!-- mappers告诉了MyBatis去哪里找持久化类的映射文件 --> <mappers> <mapper resource="org/fkit/mapper/UserMapper.xml"/> </mappers> </configuration> UserMapper.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"> <!-- namespace指用户自定义的命名空间。 --> <mapper namespace="org.fkit.mapper.UserMapper"> <!-- id="save"是唯一的标示符 parameterType属性指明插入时使用的参数类型 useGeneratedKeys="true"表示使用数据库的自动增长策略 --> <insert id="save" parameterType="org.fkit.domain.User" > INSERT INTO TB_USER(name,sex,age) VALUES(#{name},#{sex},#{age}) </insert> </mapper> User.java public class User implements Serializable{ // 用户标识 private Integer id; // 用户姓名 private String name; // 用户性别 private String sex; // 用户年龄 private Integer age; // 无参数构造器 public User() { super(); } // 有参数构造器 public User( String name, String sex, Integer age) { super(); this.name = name; this.sex = sex; this.age = age; } // setter和getter方法 public Integer getId() { return id; } public void setId(Integer 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 Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } @Override public String toString() { return "User [id=" + id + ", name=" + name + ", sex=" + sex + ", age=" + age + "]"; } } MyBatisTest.java public class MyBatisTest { public static void main(String[] args) throws Exception { // 读取mybatis-config.xml文件 InputStream inputStream = Resources.getResourceAsStream("mybatis-config.xml"); // 初始化mybatis，创建SqlSessionFactory类的实例 SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder() .build(inputStream); // 创建Session实例 SqlSession session = sqlSessionFactory.openSession(); // 创建User对象 User user = new User("admin", "男", 26); // 插入数据 session.insert("org.fkit.mapper.UserMapper.save", user); // 提交事务 session.commit(); // 关闭Session session.close(); } } ``` 

Spring集成mybaties，用配置文件将映射器接口注入业务层，无法代理生成实现类_course

Spring集成mybaties，用配置文件将映射器接口注入业务层，做单元测试时，控制层可以正常返回数据，但是部署到tomcat上，启动就报错，信息如下。 1. 单元测试时正常返回数据  2.部署到tomcat 启动报错 严重: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping': Invocation of init method failed; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.alibaba.druid.pool.DruidDataSource] for bean with name 'dataSource' defined in file [G:\IdeaProjects\firstSpring\target\firstSpring\WEB-INF\classes\spring-mybatis.xml]; nested exception is java.lang.ClassNotFoundException: com.alibaba.druid.pool.DruidDataSource Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.alibaba.druid.pool.DruidDataSource] for bean with name 'dataSource' defined in file [G:\IdeaProjects\firstSpring\target\firstSpring\WEB-INF\classes\spring-mybatis.xml]; nested exception is java.lang.ClassNotFoundException: com.alibaba.druid.pool.DruidDataSource Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.mybatis.spring.SqlSessionFactoryBean] for bean with name 'sqlSessionFactory' defined in file [G:\IdeaProjects\firstSpring\target\firstSpring\WEB-INF\classes\spring-mybatis.xml]; nested exception is java.lang.ClassNotFoundException: org.mybatis.spring.SqlSessionFactoryBean Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.mybatis.spring.mapper.MapperScannerConfigurer] for bean with name 'org.mybatis.spring.mapper.MapperScannerConfigurer#0' defined in file [G:\IdeaProjects\firstSpring\target\firstSpring\WEB-INF\classes\spring-mybatis.xml]; nested exception is java.lang.ClassNotFoundException: org.mybatis.spring.mapper.MapperScannerConfigurer Caused by: java.lang.ClassNotFoundException: org.mybatis.spring.mapper.MapperScannerConfigurer at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735) at org.springframework.util.ClassUtils.forName(ClassUtils.java:250) at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:401) at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1432) at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1377) ... 81 more 3. 配置文件 spring-mvc  Spring-mybatis ``` <util:properties id="cfg" location="classpath:config.properties"/> <!--配置DruidDataSource连接池 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close" init-method="init" lazy-init="true"> <property name="driverClassName" value="#{cfg.driver}" /> <property name="url" value="#{cfg.url}" /> <property name="username" value="#{cfg.username}" /> <property name="password" value="#{cfg.password}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="#{cfg.initialSize}" /> <!-- 连接池最大数量 --> <property name="maxActive" value="#{cfg.maxActive}" /> <!-- 连接池最小空闲 --> <property name="minIdle" value="#{cfg.minIdle}" /> <!-- 获取连接最大等待时间 --> <property name="maxWait" value="#{cfg.maxWait}" /> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" > <list> <value>classpath:mapper/*.xml</value> </list> </property> </bean> <!-- Mapper接口所在包，Spring会自动查找其下的Mapper --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> <property name="basePackage" value="rush.dao"/> </bean> ``` 4. 另外，在将映射器注入到业务层时，提示：  困惑，求大神帮忙解答，谢谢！