Ambiguous mapping found. Cannot map 'xxxxController' bean method

1.背景

今天要做一个demo，从github上clone一个springmvc mybatis的工程(https://github.com/komamitsu/Spring-MVC-sample-using-iBatis)

打包成war后启动报错：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0': Initialization of bean failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'personListController' bean method
public java.lang.String com.komamitsu.addressbook.controller.PersonListController.create(com.komamitsu.addressbook.domain.Person,org.springframework.validation.BindingResult)
to {[/person/create],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'personController' bean method
public java.lang.String com.komamitsu.addressbook.controller.PersonController.create(com.komamitsu.addressbook.domain.Person,org.springframework.validation.BindingResult) mapped.at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)at javax.servlet.GenericServlet.init(GenericServlet.java:158)at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231)at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1144)at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1031)at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4901)at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5188)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:917)at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1701)at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)at java.util.concurrent.FutureTask.run(FutureTask.java:266)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: Ambiguous mapping found. Cannot map 'personListController' bean method

2. 分析情况

上述情况

1. 原因1：bean重复初始化：使用@controller注解初始化一次，在applicationContext中又定义一次

通过对工程原文查找，发现没有重复初始化的情况。

2. 在不同的Controller中定义的映射重复。

　　　　重点查找了报错的personListController和personController 发现映射都一致，发现问题所在。

3. 解决问题

注释掉其中一个@Controller即可

4. 验证问题

转载于:https://www.cnblogs.com/davidwang456/p/4387654.html

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