訪問jsp時出現DefaultAnnotationProcessor

瀏覽錯誤信息以下：

HTTP Status 500 - java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor

解決方法以下：

在tomcat的context.xml文件裏context 元素下添加如下代碼：而後重啓tomcat搞定……

<Loader delegate="true" />

下面是瀏覽器完整錯誤信息

HTTP Status 500 - java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor

type Exception report

message java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor
	org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:161)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:340)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

root cause

java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor
	org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:151)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:340)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)