题目

The server encountered an internal error () that prevented it from fulfilling this request.
javax.servlet.ServletException:com/bean/SystemBean
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:272)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NoClassDefFoundError:com/bean/SystemBean
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
java.lang.Class.getConstructor0(Unknown Source)
java.lang.Class.newInstance0(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:148)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServle

提问时间：2020-12-20

答案

java.lang.NoClassDefFoundError:com/bean/SystemBean
这个意思是说：com/bean/SystemBean这个文件找不到,
你可以看一下你的这个文件是不是还在,项目下面webapp/classes下面的com/bean下有没有SystemBean.class,如果没有,就重新布署一下项目看看.如果有的话,咱们再继续看.
可以留言给我,到时咱们一起解决.