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发布时间:2019-03-07

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HTTP状态500 - 内部服务器错误

输入例外报告

消息在第[5]行处理JSP页面[/index.jsp]时发生异常

说明服务器遇到意外情况,无法满足请求。

例外

org.apache.jasper.JasperException:在第[5]行处理JSP页面[/index.jsp]时发生异常

2:pageEncoding =“UTF-8” 3:

4:
5:<jsp:forward page="/ emps"></jsp:forward> 6:
7:
8:

堆栈跟踪:

org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:617) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:499) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

根本原因:

javax.servlet.ServletException:servlet [dispatcherServlet]的Servlet.init()抛出异常

org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:742) org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:712) org.apache.jsp.index_jsp._jspService(index_jsp.java:113) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

根本原因:

org.springframework.beans.factory.BeanCreationException:创建名为’org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping’的bean时出错:init方法的调用失败; 嵌套异常是java.lang.IllegalStateException:不明确的映射。无法映射’employeeController’方法

public com.github.pagehelper.PageInfo com.atguigu.crud.controller.EmployeeController.getEmpsWithJson(java.lang.Integer)到 {/ emps}:已有’employeeController’bean方法

public java.lang.String com.atguigu.crud.controller.EmployeeController.getEmps(java.lang.Integer,org.springframework.ui.Model)已映射。

org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) org.springframework.beans.factory.support.AbstractBeanFactory.lambda $ doGetBean $ 0(AbstractBeanFactory.java:320) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) org.springframework.web.servlet/FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:701) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:667) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:715) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:590) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:529) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:169) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:742) org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:712) org.apache.jsp.index_jsp._jspService(index_jsp.java:113) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

根本原因:

java.lang.IllegalStateException:不明确的映射。无法映射’employeeController’方法

public com.github.pagehelper.PageInfo com.atguigu.crud.controller.EmployeeController.getEmpsWithJson(java.lang.Integer)到 {/ emps}:已有’employeeController’bean方法

public java.lang.String com.atguigu.crud.controller.EmployeeController.getEmps(java.lang.Integer,org.springframework.ui.Model)已映射。

org.springframework.web.servlet.handler.AbstractHandlerMethodMapping $ MappingRegistry.assertUniqueMethodMapping(AbstractHandlerMethodMapping.java:621) org.springframework.web.servlet.handler.AbstractHandlerMethodMapping $ MappingRegistry.register(AbstractHandlerMethodMapping.java:589) org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:315) org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lambda $ detectHandlerMethods $ 1(AbstractHandlerMethodMapping.java:282) java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:280) org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.processCandidateBean(AbstractHandlerMethodMapping.java:252) org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:211) org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:199) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:164) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) org.springframework.beans.factory.support.AbstractBeanFactory.lambda $ doGetBean $ 0(AbstractBeanFactory.java:320) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:701) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:667) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:715) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:590) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:529) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:169) javax.servlet.GenericServlet.init(GenericServlet.java:158) org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:742) org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:712) org.apache.jsp.index_jsp._jspService(index_jsp.java:113) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330) javax.servlet.http.HttpServlet.service(HttpServlet.java:742) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Apache Tomcat / 8.5.41

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