解决org.springframework.beans.factory.BeanCreationException: Error creating bean with name

spring mvc项目出现如下错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0': Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'userController' bean method public java.lang.String org.test.controller.UserController.insertUser(org.test.bean.User,org.springframework.ui.ModelMap) throws java.lang.Exception to {[/user/insert],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'userController' bean method public java.lang.String org.test.controller.UserController.insertuser(org.test.bean.User,org.springframework.ui.ModelMap) throws java.lang.Exception mapped.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1482)     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)     at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)     at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)     at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)     at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)     at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651)     at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:599)     at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665)     at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:518)     at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:459)     at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)     at javax.servlet.GenericServlet.init(GenericServlet.java:160)     at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)     at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1193)     at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)     at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176)     at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460)     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)     at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)     at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)     at java.util.concurrent.FutureTask.run(FutureTask.java:138)     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)     at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'UserController' bean method

经过很长时间调查发现上述错误中出现有{[/route/insert],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'userController' bean method 这就好说明/route/insert这个url在userController类中已经存在一个。

原因终于找到是springmvc controller类中“/route/insert ”URL出现了两个或者多个，删除重复的/route/insert问题就解决了。