Logincheck.jsp
<%@ page language="java" import="java.util.*,java.sql.*" pageEncoding="UTF-8"%>
<%
String path = request.getcontextpath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<%
String driverName="oracle.jdbc.OracleDriver";
String dbURL="jdbc:oracle:thin:@localhost:1521:test";
String userName="system";
String userPwd="1234";
Connection conn = null;
ResultSet rs = null;
%>
<%
boolean flag=false;
String user = request.getParameter("usern");
System.out.println(user);
String pass = request.getParameter("passw");
System.out.println(pass);
try{
Class.forName("oracle.jdbc.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:test","system","1234");
String sql="select * from Log where UN=‘ "+user+" ‘ and PD=‘ "+pass+" ‘ ";
Statement stmt = conn.createStatement();
System.out.println("stmt");
rs = stmt.executeQuery(sql);
System.out.println("rs suc");
if(rs.next()){
System.out.println("yes");
flag=true;
}else{
flag=false;
System.out.println("no");
}
rs.close();
stmt.close();
conn.close();
}catch(Exception err){
System.out.println("error");
}
if(flag){
%>
<jsp:forward page="suc.jsp"/>
<%
}else{
%>
<jsp:forward page="error.jsp"/>
<%
}
%>
</body>
</html>
Login.jsp（只截取主要部分）
<body>
<form action="Logincheck.jsp" method="post">
<table align="center">
<tr> <td>用户名: <input type="text" name="usern" /></td> </tr>
<tr> <td>密码: <input type="password" name="passw" /><a href="find.jsp">忘记密码？</a> </td></tr>
</table>
</form>
</body>
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