spring mvc @RequestMapping("/flow_statistic.jspx")注解报错

码拜

10年 ago

各位大侠，本人之前使用spring mvc 的@RequestMapping，采用的是路径配置方式，例如：@RequestMapping(“/hello”)，一直没有问题。今天在查看其他人写的项目时，采用的是@RequestMapping(“/flow_statistic.jspx”)，我在spring 配置文件中自动扫描注解，如： <!– 控制器所在的包{添加注解的} –> <context:component-scan base-package=”com.jeecms.cms.action.front” /> 在项目启动时，报错：如下： Java HotSpot(TM) Client VM warning: MaxNewSize (262144k) is equal to or greater than the entire heap (262144k). A new generation size of 262080k will be used. 2014-7-23 0:41:35 org.apache.tomcat.util.digester.SetPropertiesRule begin 警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property “”debug”” to “”0″” did not find a matching property. 2014-7-23 0:41:35 org.apache.catalina.core.AprLifecycleListener init 信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: E:\Java\jdk6\bin;E:\kaifa_gongju\tomcat-6.0.18\bin 2014-7-23 0:41:35 org.apache.coyote.http11.Http11Protocol init 信息: Initializing Coyote HTTP/1.1 on http-80 2014-7-23 0:41:35 org.apache.catalina.startup.Catalina load 信息: Initialization processed in 672 ms 2014-7-23 0:41:35 org.apache.catalina.core.StandardService start 信息: Starting service Catalina 2014-7-23 0:41:35 org.apache.catalina.core.StandardEngine start 信息: Starting Servlet Engine: Apache Tomcat/6.0.18 2014-7-23 0:41:38 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring root WebApplicationContext 2014-7-23 0:42:07 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring FrameworkServlet “”JeeCmsAdmin”” 2014-7-23 0:42:17 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring FrameworkServlet “”JeeCmsFront”” 00:42:20.140 ERROR org.springframework.web.servlet.DispatcherServlet – Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name “”org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0″” defined in ServletContext resource [/WEB-INF/config/jeecms-servlet-front.xml]: Initialization of bean failed; nested exception is java.lang.IllegalStateException: Cannot map handler “”siteFlowAct”” to URL path [/flow_statistic.jspx]: There is already handler of type [class com.jeecms.cms.action.front.CmsSiteFlowAct] mapped. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527) ~[spring.beans-3.0.5.jar:3.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) ~[spring.beans-3.0.5.jar:3.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) ~[spring.beans-3.0.5.jar:3.0.5.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring.beans-3.0.5.jar:3.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) ~[spring.beans-3.0.5.jar:3.0.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) ~[spring.beans-3.0.5.jar:3.0.5.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:398) ~[spring.beans-3.0.5.jar:3.0.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1146) ~[spring.context-3.0.5.jar:3.0.5.RELEASE] at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:275) ~[spring.beans-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.DispatcherServlet.initHandlerMappings(DispatcherServlet.java:424) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.DispatcherServlet.initStrategies(DispatcherServlet.java:339) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.DispatcherServlet.onRefresh(DispatcherServlet.java:328) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.FrameworkServlet.onApplicationEvent(FrameworkServlet.java:523) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.FrameworkServlet$ContextRefreshListener.onApplicationEvent(FrameworkServlet.java:749) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.FrameworkServlet$ContextRefreshListener.onApplicationEvent(FrameworkServlet.java:1) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.context.event.GenericApplicationListenerAdapter.onApplicationEvent(GenericApplicationListenerAdapter.java:51) ~[spring.context-3.0.5.jar:3.0.5.RELEASE] at org.springframework.context.event.SourceFilteringListener.onApplicationEventInternal(SourceFilteringListener.java:97) ~[spring.context-3.0.5.jar:3.0.5.RELEASE] at org.springframework.context.event.SourceFilteringListener.onApplicationEvent(SourceFilteringListener.java:68) ~[spring.context-3.0.5.jar:3.0.5.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:97) ~[spring.context-3.0.5.jar:3.0.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:303) ~[spring.context-3.0.5.jar:3.0.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:911) ~[spring.context-3.0.5.jar:3.0.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:428) ~[spring.context-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:442) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:458) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:339) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:306) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:127) [spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at javax.servlet.GenericServlet.init(GenericServlet.java:241) [javaee.jar:9.0] at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172) [catalina.jar:na] at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992) [catalina.jar:na] at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058) [catalina.jar:na] at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) [catalina.jar:na] at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) [catalina.jar:na] at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) [catalina.jar:na] at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) [catalina.jar:na] at org.apache.catalina.core.StandardService.start(StandardService.java:516) [catalina.jar:na] at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) [catalina.jar:na] at org.apache.catalina.startup.Catalina.start(Catalina.java:578) [catalina.jar:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_24] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.6.0_24] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_24] at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_24] at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) [bootstrap.jar:na] at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) [bootstrap.jar:na] Caused by: java.lang.IllegalStateException: Cannot map handler “”siteFlowAct”” to URL path [/flow_statistic.jspx]: There is already handler of type [class com.jeecms.cms.action.front.CmsSiteFlowAct] mapped. at org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:390) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:362) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping.detectHandlers(AbstractDetectingUrlHandlerMapping.java:82) ~[spring.web.servlet-3.0.5.jar:3.0.5.RELEASE] at 这种情况本人没有碰到过，百度了下，也没有找到答案。所以请大家帮我看看。谢谢！有意思的是去掉自动扫描，就没问题了。 <!– 控制器所在的包{添加注解的} –> <context:component-scan base-package=”com.jeecms.cms.action.front” /> 不知道其中的原因。
37分	你这个Controller不只一个实例，我猜你在spring主配置文件中也扫描到了这个Controller，那个地方不要扫描控制器。 <!-- 使用annotation 自动注册bean, 并保证@Required、@Autowired的属性被注入 --> <context:component-scan base-package="com.xxx.xxx" use-default-filters="false" > <!-- 扫描符合 @Repository @Service的类 --> <context:include-filter type="annotation" expression="org.springframework.stereotype.Repository" /> <context:include-filter type="annotation" expression="org.springframework.stereotype.Service" /> <context:include-filter type="annotation" expression="org.springframework.stereotype.Component" /> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> 然后在springMVC的xml中扫描Controller，就是你去掉掉的那句话 <!-- 自动扫描且只扫描@Controller --> <context:component-scan base-package="com.xxx.xxx" use-default-filters="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan>
3分	/flow_statistic.jspx这个URL 在这里已经用了吧！there is already handler of type [class com.jeecms.cms.action.front.CmsSiteFlowAct] mapped.