原因是什？菜。大家解答
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
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:358)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)


root cause

java.lang.NullPointerException
org.apache.jsp.TMP1icqpeyzi0_jsp._jspService(TMP1icqpeyzi0_jsp.java:75)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)


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


--------------------------------------------

Apache Tomcat/5.0.19

[解决办法]
java.lang.NullPointerException

不是很清楚了吗？

把你这个TMP1icqpeyzi.jsp的源代码贴出来。帮你看。
[解决办法]
空指针异常 有什么没有加载完全贴代码吧。
[解决办法]
在Tomcat 5.0\work\Catalina\localhost\项目名\org.apache.jsp\目录下 找到TMP1icqpeyzi0_jsp.java第75行 就可以看到具体的错误了
[解决办法]
java.lang.NullPointerException

空指针

我估计在这
String GuanLiNo = request.getParameter( "GuanLiNo ");
String Projectname = request.getParameter( "Projectname ");
String PartNo = request.getParameter( "PartNo ");

你做一个
if(GuanLiNo == null)
{
GuanLiNo = " ";
}
那两个你自己做
我的异常网推荐解决方案：The server encountered an internal error () that prevented it from fulfilling this request.,http://www.myexception.cn/java-web/317.html