Question

The full stack trace of the root cause is available in the Apache Tomcat/6.0

HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception org.apache.jasper.JasperException: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:541)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)

root cause java.lang.NullPointerException
com.LogicBean.checkYongHu(LogicBean.java:20)
org.apache.jsp.logindo_jsp._jspService(logindo_jsp.java:83)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.13 logs.

Answer 1

出现500错误肯定是你的路径写错了，要不就是代码哪个字母写错了，
在tomcat中查找错误，不要到Eclipse中去找，祝你幸运。。。