The server encountered an internal error () that prevented it from fulfilling th解决方案
日期：2014-05-17 浏览次数：20781 次
The server encountered an internal error () that prevented it from fulfilling th
急求！！！！请各位大侠帮帮忙，错误！
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:532)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:426)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
java.lang.NullPointerException
org.apache.jsp.WebRoot.EnterPage.judge_jsp._jspService(judge_jsp.java:113)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.10 logs.
源代码：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030">
<title>Insert title here</title>
</head>
<body>
<%
String userName = request.getParameter("number");
String password = request.getParameter("password");
String str1 = null;
//out.println(userName);
Statement st = null;
Connection con = null;
ResultSet rs = null;
int i = 0;
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbc:odbc:sun");
st = con.createStatement();
String sql = "select * from userInformation";
rs = st.executeQuery(sql);
while(rs.next()){
String str = rs.getString(2);
if(str.equals(userName) && str.equals(password))
{
str1 = str;
i ++;
}
}
if(i == 0)
{
String s = "您输入的用户名或密码错误";
String errorInfo = new String(s.getBytes("GB18030") , "ISO-8859-1");
response.sendRedirect("EnterPage.jsp?errorInfo=" + errorInfo);
}
else if(i == 1)
{
response.sendRedirect("/StudentSystem/TheMainPage/TheMainPage.jsp");
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLExcepti
急求！！！！请各位大侠帮帮忙，错误！
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:532)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:426)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
java.lang.NullPointerException
org.apache.jsp.WebRoot.EnterPage.judge_jsp._jspService(judge_jsp.java:113)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.10 logs.
源代码：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030">
<title>Insert title here</title>
</head>
<body>
<%
String userName = request.getParameter("number");
String password = request.getParameter("password");
String str1 = null;
//out.println(userName);
Statement st = null;
Connection con = null;
ResultSet rs = null;
int i = 0;
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbc:odbc:sun");
st = con.createStatement();
String sql = "select * from userInformation";
rs = st.executeQuery(sql);
while(rs.next()){
String str = rs.getString(2);
if(str.equals(userName) && str.equals(password))
{
str1 = str;
i ++;
}
}
if(i == 0)
{
String s = "您输入的用户名或密码错误";
String errorInfo = new String(s.getBytes("GB18030") , "ISO-8859-1");
response.sendRedirect("EnterPage.jsp?errorInfo=" + errorInfo);
}
else if(i == 1)
{
response.sendRedirect("/StudentSystem/TheMainPage/TheMainPage.jsp");
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLExcepti
免责声明： 本文仅代表作者个人观点，与爱易网无关。其原创性以及文中陈述文字和内容未经本站证实，对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺，请读者仅作参考，并请自行核实相关内容。
