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

web.xml 配置正确没有哦

Answer 2

数据库的没连接或者其他一些基本配置的问题