Question

tomcat访问首页就报500错误

type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception javax.servlet.ServletException: java.lang.NoClassDefFoundError: Lorg/apache/AnnotationProcessor;
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:273)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause java.lang.NoClassDefFoundError: Lorg/apache/AnnotationProcessor;
java.lang.Class.getDeclaredFields0(Native Method)
java.lang.Class.privateGetDeclaredFields(Class.java:2291)
java.lang.Class.getDeclaredFields(Class.java:1743)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:145)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause java.lang.ClassNotFoundException: org.apache.AnnotationProcessor
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1666)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:126)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63)
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
java.lang.Class.getDeclaredFields0(Native Method)
java.lang.Class.privateGetDeclaredFields(Class.java:2291)
java.lang.Class.getDeclaredFields(Class.java:1743)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:145)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.2 logs.

Answer 1

500就是程序出错了

Answer 2

首页有错误，自己检查一下看哪里错了。

Answer 3

java.lang.NoClassDefFoundError: 一般只要有No ClassDefFoundError的都是少Jar包
org.apache.AnnotationProcessor 这个Jar文件没有

Answer 4

我只知道是出错拉！哈哈哈

Answer 5

服务器代码错误