使用SSM框架报为bean类指定注释的bean名称‘userMapper‘ Annotation-specified bean name ‘userMapper‘ for bean class

Annotation-specified bean name 'userMapper' for bean class

报错内容
原因：
解决

报错内容

06-Dec-2020 08:47:35.637 信息 [main] org.apache.catalina.startup.Catalina.start Server startup in 107 ms
Connected to server
[2020-12-06 08:47:35,837] Artifact books:war exploded: Artifact is being deployed, please wait...
06-Dec-2020 08:47:40.247 信息 [RMI TCP Connection(3)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanJars 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.
2020-12-06 08:47:42.376 [RMI TCP Connection(3)-127.0.0.1-316] ERROR org.springframework.web.context.ContextLoader - Context initialization failed
org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'userMapper' for bean class [com.zking.books.mapper.UserMapper] conflicts with existing, non-compatible bean definition of same name and class [com.zking.books.mapper.sys.UserMapper]at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.checkCandidate(ClassPathBeanDefinitionScanner.java:348) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.mybatis.spring.mapper.ClassPathMapperScanner.checkCandidate(ClassPathMapperScanner.java:236) ~[mybatis-spring-1.3.1.jar:1.3.1]at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:286) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.mybatis.spring.mapper.ClassPathMapperScanner.doScan(ClassPathMapperScanner.java:163) ~[mybatis-spring-1.3.1.jar:1.3.1]at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.scan(ClassPathBeanDefinitionScanner.java:253) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.mybatis.spring.mapper.MapperScannerConfigurer.postProcessBeanDefinitionRegistry(MapperScannerConfigurer.java:317) ~[mybatis-spring-1.3.1.jar:1.3.1]at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:123) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:693) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:409) ~[spring-web-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:291) ~[spring-web-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103) ~[spring-web-5.0.2.RELEASE.jar:5.0.2.RELEASE]at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4853) ~[catalina.jar:8.0.46]at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314) ~[catalina.jar:8.0.46]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) ~[catalina.jar:8.0.46]at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:753) ~[catalina.jar:8.0.46]at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:729) ~[catalina.jar:8.0.46]at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) ~[catalina.jar:8.0.46]at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1733) ~[catalina.jar:8.0.46]at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_201]at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_201]at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_201]at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_201]at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300) ~[tomcat-coyote.jar:8.0.46]at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) ~[?:1.8.0_201]at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) ~[?:1.8.0_201]at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:484) ~[catalina.jar:8.0.46]at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:433) ~[catalina.jar:8.0.46]at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_201]at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_201]at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_201]at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_201]at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300) ~[tomcat-coyote.jar:8.0.46]at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) ~[?:1.8.0_201]at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) ~[?:1.8.0_201]at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468) ~[?:1.8.0_201]at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468) ~[?:1.8.0_201]at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76) ~[?:1.8.0_201]at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309) ~[?:1.8.0_201]at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_201]at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408) ~[?:1.8.0_201]at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829) ~[?:1.8.0_201]at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_201]at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_201]at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_201]at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_201]at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357) ~[?:1.8.0_201]
06-Dec-2020 08:47:42.421 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file
06-Dec-2020 08:47:42.423 严重 [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal Context [/books] startup failed due to previous errorsat sun.rmi.transport.Transport$1.run(Transport.java:200) ~[?:1.8.0_201]at sun.rmi.transport.Transport$1.run(Transport.java:197) ~[?:1.8.0_201]at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_201]at sun.rmi.transport.Transport.serviceCall(Transport.java:196) ~[?:1.8.0_201]at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573) ~[?:1.8.0_201]at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834) ~[?:1.8.0_201]at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688) ~[?:1.8.0_201]at java.security.AccessController.doPrivileged(Native Method) [?:1.8.0_201]at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687) [?:1.8.0_201]at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_201]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_201]at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]
[2020-12-06 08:47:42,536] Artifact books:war exploded: Error during artifact deployment. See server log for details.
06-Dec-2020 08:47:45.615 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory E:\tools\apache-tomcat-8.0.46\webapps\manager
06-Dec-2020 08:47:45.726 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory E:\tools\apache-tomcat-8.0.46\webapps\manager has finished in 111 ms

原因：

这个报错把主要意思翻译过来就是说，在你的Spring上下文中含有一个相同的UserMapper,
其实来说就是在Spring上下文中有相同的Mapper映射文件，我们在使用注解的时候Spring就读不到我们需要读取那个映射文件。

解决

只需要把对应相同的一个mapper映射文件改掉其中一个的名字或者说删掉其中一个就可以了

小结一下：这个问题来说还是比较容易解决的，而且主要犯这个问题也是比较粗心的，我在这里就做了一个反面例子，希望大家不要犯这种低级错误，希望能帮到大家！！！！！

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使用SSM框架报为bean类指定注释的bean名称‘userMapper‘ Annotation-specified bean name ‘userMapper‘ for bean class

Annotation-specified bean name 'userMapper' for bean class

报错内容

原因：

解决

使用SSM框架报为bean类指定注释的bean名称‘userMapper‘ Annotation-specified bean name ‘userMapper‘ for bean class相关推荐

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