HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
cn.jbit.dao.UserOperation.find(UserOperation.java:69)
cn.jbit.servlet.LoginServlet.doPost(LoginServlet.java:28)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
cn.jbit.dao.EncodingFilter.doFilter(EncodingFilter.java:21)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.32 logs.
Apache Tomcat/6.0.32
------解决思路----------------------
空指针，走debug调试，看看传值cn.jbit.dao.UserOperation.find。
------解决思路----------------------
cn.jbit.servlet.LoginServlet.doPost(LoginServlet.java:28)
到这个类的28行看看，是不是传过来的值不对