📄 login_action.jsp
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<%@ page language="java" contentType="text/html; charset=GBK"
pageEncoding="GBK"%>
<%@page import="java.util.*,java.io.*,java.sql.*"%>
<%@ include file="conn.jsp"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
</head>
<body>
<%
try {
String strDo = "";
String username = "";
String password = "";
if (null != request.getParameter("username"))
username = request.getParameter("username");
if (null != request.getParameter("password"))
password = request.getParameter("password");
//接收空值时跳转到登录页面 防止用户直接访问本页面
if ((username.equals("")) || (password.equals(""))) {
response.sendRedirect("error.jsp");
} else {
//执行查询
strDo = "SELECT id,name,password FROM " + tuinfo
+ " WHERE name='" + username
+ "' and password=SHA('" + password + "')";
System.out.print(strDo + "\n");
rs = stmt.executeQuery(strDo);
if (rs.next()) {
int id = rs.getInt("id");
rs.close();
System.out.print("登录成功\n");
//重定向 主页
response.sendRedirect("success.jsp");
//登录成功
//用户名=session"login" id=session"loginid"
session.setAttribute("authorid", id);
session.setAttribute("login", username);
//普通用户登录 清空session adminlogin
if (null != session.getAttribute("adminlogin"))
session.removeAttribute("adminlogin");
} else {
rs.close();
System.out.print("登录失败\n");
//重定向 登录页
response.sendRedirect("error.jsp");
}
}
} catch (Exception e) {
e.printStackTrace();
response.sendRedirect("error.jsp");
} finally {
stmt.close();
conn.close();
}
%>
</body>
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