Cannot map 'userController' method
rg.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 java.lang.IllegalStateException: Ambiguous mapping. Cannot map ‘userController’ method
public java.lang.String smbms.controller.UserController.login(java.lang.String,java.lang.String,javax.servlet.http.HttpSession,javax.servlet.http.HttpServletRequest)
to {[/doUser/login]}: There is already ‘userController’ bean method
public org.springframework.web.servlet.ModelAndView smbms.controller.UserController.login(java.lang.String,java.lang.String,javax.servlet.http.HttpSession) mapped.
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1634)
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: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:761)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:171)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1144)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1091)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:983)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5003)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5317)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:754)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1736)
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:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:483)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:432)
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:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1471)
at javax.management.remote.rmi.RMIConnectionImpl.access 300 ( R M I C o n n e c t i o n I m p l . j a v a : 76 ) a t j a v a x . m a n a g e m e n t . r e m o t e . r m i . R M I C o n n e c t i o n I m p l 300(RMIConnectionImpl.java:76) at javax.management.remote.rmi.RMIConnectionImpl 300(RMIConnectionImpl.java:76)atjavax.management.remote.rmi.RMIConnectionImplPrivilegedOperation.run(RMIConnectionImpl.java:1312)
at java.security.AccessController.doPrivileged(Native Method)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1411)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:832)
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:497)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport 1. r u n ( T r a n s p o r t . j a v a : 197 ) a t j a v a . s e c u r i t y . A c c e s s C o n t r o l l e r . d o P r i v i l e g e d ( N a t i v e M e t h o d ) a t s u n . r m i . t r a n s p o r t . T r a n s p o r t . s e r v i c e C a l l ( T r a n s p o r t . j a v a : 196 ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t . h a n d l e M e s s a g e s ( T C P T r a n s p o r t . j a v a : 568 ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t 1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568) at sun.rmi.transport.tcp.TCPTransport 1.run(Transport.java:197)atjava.security.AccessController.doPrivileged(NativeMethod)atsun.rmi.transport.Transport.serviceCall(Transport.java:196)atsun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)atsun.rmi.transport.tcp.TCPTransportConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport C o n n e c t i o n H a n d l e r . l a m b d a ConnectionHandler.lambda ConnectionHandler.lambdarun 256 ( T C P T r a n s p o r t . j a v a : 683 ) a t j a v a . s e c u r i t y . A c c e s s C o n t r o l l e r . d o P r i v i l e g e d ( N a t i v e M e t h o d ) a t s u n . r m i . t r a n s p o r t . t c p . T C P T r a n s p o r t 256(TCPTransport.java:683) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport 256(TCPTransport.java:683)atjava.security.AccessController.doPrivileged(NativeMethod)atsun.rmi.transport.tcp.TCPTransportConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor W o r k e r . r u n ( T h r e a d P o o l E x e c u t o r . j a v a : 617 ) a t j a v a . l a n g . T h r e a d . r u n ( T h r e a d . j a v a : 745 ) C a u s e d b y : j a v a . l a n g . I l l e g a l S t a t e E x c e p t i o n : A m b i g u o u s m a p p i n g . C a n n o t m a p ′ u s e r C o n t r o l l e r ′ m e t h o d p u b l i c j a v a . l a n g . S t r i n g s m b m s . c o n t r o l l e r . U s e r C o n t r o l l e r . l o g i n ( j a v a . l a n g . S t r i n g , j a v a . l a n g . S t r i n g , j a v a x . s e r v l e t . h t t p . H t t p S e s s i o n , j a v a x . s e r v l e t . h t t p . H t t p S e r v l e t R e q u e s t ) t o [ / d o U s e r / l o g i n ] : T h e r e i s a l r e a d y ′ u s e r C o n t r o l l e r ′ b e a n m e t h o d p u b l i c o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . M o d e l A n d V i e w s m b m s . c o n t r o l l e r . U s e r C o n t r o l l e r . l o g i n ( j a v a . l a n g . S t r i n g , j a v a . l a n g . S t r i n g , j a v a x . s e r v l e t . h t t p . H t t p S e s s i o n ) m a p p e d . a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . h a n d l e r . A b s t r a c t H a n d l e r M e t h o d M a p p i n g Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'userController' method public java.lang.String smbms.controller.UserController.login(java.lang.String,java.lang.String,javax.servlet.http.HttpSession,javax.servlet.http.HttpServletRequest) to {[/doUser/login]}: There is already 'userController' bean method public org.springframework.web.servlet.ModelAndView smbms.controller.UserController.login(java.lang.String,java.lang.String,javax.servlet.http.HttpSession) mapped. at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping Worker.run(ThreadPoolExecutor.java:617)atjava.lang.Thread.run(Thread.java:745)Causedby:java.lang.IllegalStateException:Ambiguousmapping.Cannotmap′userController′methodpublicjava.lang.Stringsmbms.controller.UserController.login(java.lang.String,java.lang.String,javax.servlet.http.HttpSession,javax.servlet.http.HttpServletRequest)to[/doUser/login]:Thereisalready′userController′beanmethodpublicorg.springframework.web.servlet.ModelAndViewsmbms.controller.UserController.login(java.lang.String,java.lang.String,javax.servlet.http.HttpSession)mapped.atorg.springframework.web.servlet.handler.AbstractHandlerMethodMappingMappingRegistry.assertUniqueMethodMapping(AbstractHandlerMethodMapping.java:576)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:540)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:264)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:250)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:214)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:184)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:127)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1692)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1630)
… 66 more
解决办法：
两个注解不能重名