我是javaee新手，运行数据库出现这样的问题不知道怎么修改description The server encountered an internal err

Question

<%@ page language="java" import="java.sql.*"%>
<%@ page contentType="text/html;charset=GB18030"%>
<%@ page import="java.util.*" %>
<%
reponse.setCharacterEncoding("GB18030");
String susername,spassward,school,scho,sclass,stel,sgender;
susername=request.getParameter("Name");
spassword=request.getParameter("passward1");
school=request.getParameter("xueyuan");
scho=request.getParameter("zhuanye");
sclass=request.getParameter("nianji");
stel=request.getParameter("number");
sgender=request.getParameter("gender");
String insertquery= "insert into student set
Name='"+susername+"',passward1='"+spassward+"',
xueyuan='"+school+"',number='"+stel+"',zhuanye='"+scho+"',nianji='"+sclass+"',number='"+stel+"',gender='"+sgender+"'";
String selectquery="select * from student where Name='"+susername+";
Connction conn=null;
Statement stmt=null;
Resultset rs=null;
try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn= DriverManager.getConnection("jdbc:mysql://localhost/test","root","root");
stmt= conn.createStatement();
rs=stmt.executeQuery(selectquery);
if(rs.next()){
response.sendRendirect("register.jsp");}
return;}
else{
stmt.executeQuery(insertquery);}
}catch(SQLException ex){
ex.printStackTrace();
response.sendRendirect("login.jsp");}
finally
{stmt.close();
conn.close();}
%>

Answer 1

1、你输出一下要插入的信息，看看有没有为null的数据或者是乱码。
2、你要补充一下异常的信息是什么，比如这样子：
[code="java"]
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:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

java.lang.NullPointerException
org.apache.jsp.submit_jsp._jspService(submit_jsp.java:107)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

[/code]
有这些才好找错误。。。