MyBatis的通用类Mapper 无法获取实体类com.manager.member.model.Member对应的表名!

[啾啾就啾啾]

有没有大神帮忙解决一下让我运行起来这个通用类啊，困扰2-3天没正常睡觉了，绝对有大奖，运行起来给你们转账10元手续费也行啊

tk.mybatis.mapper.MapperException: 无法获取实体类com.manager.member.model.Member对应的表名!
at tk.mybatis.mapper.mapperhelper.EntityHelper.getEntityTable(EntityHelper.java:71)
at tk.mybatis.mapper.entity.Example.<init>(Example.java:103)
at tk.mybatis.mapper.entity.Example.<init>(Example.java:88)
at tk.mybatis.mapper.entity.Example.<init>(Example.java:78)
at com.manager.member.service.impl.MemberServiceImpl.selectByMember(MemberServiceImpl.java:30)
at com.manager.member.service.impl.MemberServiceImpl$$FastClassBySpringCGLIB$$f4d5b90c.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:711)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:644)
at com.manager.member.service.impl.MemberServiceImpl$$EnhancerBySpringCGLIB$$566ffa85.selectByMember(<generated>)
at com.manager.member.controller.MemberController.search(MemberController.java:36)
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.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
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.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
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:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
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:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1457)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$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)

[李德胜1995]

public static EntityTable getEntityTable(Class<?> entityClass) {
        EntityTable entityTable = entityTableMap.get(entityClass);
        if (entityTable == null) {
            initEntityNameMap(entityClass);
            entityTable = entityTableMap.get(entityClass);
        }
        if (entityTable == null) {
            throw new RuntimeException("无法获取实体类" + entityClass.getCanonicalName() + "对应的表名!");
        }
        return entityTable;
    }

entityTable == null...。。估计是你的jar包导致Example类初始化失败造成的，贴一下导入什么jar包？？？

[啾啾就啾啾]

这个是引入的jar包

[GaryLee_211]

看看有么有这一段 public Class<T> clazz; //获取泛型参数（在构造方法中通过反射获取类型） public BaseServiceImpl() { //this表示当前运行的类,就是子类,然后根据从子类获取父类的类型,然后根据父类的类型获取 ParameterizedType pt = (ParameterizedType) this.getClass().getGenericSuperclass(); //从父类的类型中获取所有泛型的参数,中的第一个 this.clazz = (Class<T>) pt.getActualTypeArguments()[0]; }

[刀刀爱思考]

你这个问题解决了没

[will_小郑]

我也遇到这个问题了，有哪位大神遇到解决过

[天外游心]

我也遇到了这种情况，前几天还是好的，项目update一下就不行了，来回对比项目跟以前有啥不同，发现tk.mapper的RELEASE版本自动升级了，无奈，手动把mapper-spring-boot-starter版本改回1.1.7，mapper版本变回3.4.6，问题解决。

[song_wl]

问题解决了吗？没有的话参考 http://blog.csdn.net/shikaiwencn/article/details/52485883

[我若成风，天奈我何]

表名，字段必须跟entities 中的完全一致

[christiantlm]

@MapperScan 这个注解在两个包里有，分别是
tk.mybatis.spring.annotation.MapperScan
org.mybatis.spring.annotation.MapperScan
看你的报错，应该是注解用错了，导致没有扫描到对应的实体类，从而tk.mybatis.mapper.mapperhelper.EntityHelper.initEntityNameMap没有执行，最后初始化Example就报了“无法获取实体类...”

[wjt123125]

如下正解：
@MapperScan 这个注解在两个包里有，分别是
tk.mybatis.spring.annotation.MapperScan
org.mybatis.spring.annotation.MapperScan
看你的报错，应该是注解用错了，导致没有扫描到对应的实体类，从而tk.mybatis.mapper.mapperhelper.EntityHelper.initEntityNameMap没有执行，最后初始化Example就报了“无法获取实体类...”