今天开发项目时候发现项目报错启动的时候,也没有具体指的是哪一行报错,其实很简单的知道,首先看下报错信息:

there is already 'RtController' bean method
public void com.yd.ydbi.matrix.controller.Matrix_cross_sort_toSiteRtController.exportFnbEntities1(com.common.response.CustomReqParameter,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.lang.Exception mapped.
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:)
at org.springframework.beans.factory.support.AbstractBeanFactory$.getObject(AbstractBeanFactory.java:)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:)
at javax.servlet.GenericServlet.init(GenericServlet.java:)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalStateException: Ambiguous mapping. Cannot map 'matrix_cross_sort_toSiteRtController' method
public void com.matrix.controller.RtController.exportFnbEntities(com.response.CustomReqParameter,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.lang.Exception
to {[/actions/exportFnbEntities]}: There is already 'RtController' bean method
public void com.controller.RtController.exportFnbEntities1(com.response.CustomReqParameter,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.lang.Exception mapped.
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.assertUniqueMethodMapping(AbstractHandlerMethodMapping.java:)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping$MappingRegistry.register(AbstractHandlerMethodMapping.java:)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:)
... more

这个错其实可以很简单的看出来,前提是了解springmvc的原理,

springmvc在初始化的时候,就会将url跟相应的method形成一个map集合,让url和对应method,同时这个url和method是不可以重复的,所以就会存在相关问题,

上面报错信息说是这个原因,是用相同的method,所以在启动时候就会报错,所以我们需要去对应的controller中寻找相关的错误信息,就是比较controller中数据是否有相关信息,

就是比较

@requestMapping中参数和method名称和其他的@requestMapping和method是否有相同的,今天我直接在里面寻找到了,主要是优化别人的项目,.所以方法名意向之中写成相同的了

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