Question

java编程问题HTTP Status 500 -

HTTP Status 500 -

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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:491)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.NullPointerException
org.apache.jsp.loginboke_005fdo_jsp._jspService(loginboke_005fdo_jsp.java:67)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.26 logs.

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Apache Tomcat/6.0.26

我写的程序，运行后出现这些东西，请问该怎么改正呢？

Answer 1

java.lang.NullPointerException
org.apache.jsp.loginboke_005fdo_jsp._jspService(loginboke_005fdo_jsp.java:67)

有空指针异常了，这个jsp里。

Answer 2

java.lang.NullPointerException空指针异常是最简单的错，仔细调试源代码一下，很容易找到的

Answer 3

应该是jsp代码中的 ACTION method=“”这里的错误吧你看看

Answer 4

500服务器！

Answer 5

你能说清楚一些吗，最主要的不是在这错，应该在业务层就没获取值，你再检查一遍，你写的代码