JSP新闻系统之六 后台登陆页面
【摘要】
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><% String path = request.getContextPath(); String basePath = request.getScheme() + "://" +...
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
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<%
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String path = request.getContextPath();
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String basePath = request.getScheme() + "://"
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+ request.getServerName() + ":" + request.getServerPort()
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+ path + "/";
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%>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>用户登陆</title>
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<link rel="stylesheet" href="../css/css.css" type="text/css"></link>
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</head>
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<body bgcolor="#31827C">
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<form action="login_action.jsp" method="post">
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<table width="99%" height="100%" border="0" cellspacing="0" cellpadding="0">
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<tr>
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<td width="100%" height="100%" align="center" valign="middle"><p> </p>
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<table width="700" height="440" border="0" align="center" cellpadding="0" cellspacing="0" background="pic/login.jpg">
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<tr>
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<td><table width="100%" height="354" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td height="121"> </td>
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<td> </td>
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</tr>
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<tr>
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<td width="62%" height="158"> </td>
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<td width="38%" valign="bottom">
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<table width="89%" height="99" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td width="30%" height="30"><div align="right">用户名：</div></td>
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<td width="70%" height="30"><label>
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<input type="text" name="username" size="15" style="height:22px"/>
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</label></td>
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</tr>
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<tr>
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<td height="18"><div align="right">密 码：</div></td>
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<td height="18"><label>
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<input type="password" name="userpwd" size="15" style="height:22px"/>
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</label></td>
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</tr>
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<tr>
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<td height="18"><div align="right"><input type="checkbox" name="saveMessage"/></div></td>
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<td height="18"><label>
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两周内自动登录
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</label></td>
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</tr>
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<tr>
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<td height="50"> </td>
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<td height="50" valign="top"><input type="submit" value="提交">
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<input type="reset" value="取消"></td>
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</tr>
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</table>
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</td>
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</tr>
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<tr>
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<td height="75"> </td>
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<td> </td>
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</tr>
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</table></td>
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</tr>
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</table>
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<p></p>
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<p> </p></td>
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</tr>
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</table>
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</form>
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</body>
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</html>
登陆action页面
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
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<%@ page import="com.news.entity.*,com.news.dao.*,com.news.dao.impl.*" %>
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<%
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String path = request.getContextPath();
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String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
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%>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<base href="<%=basePath%>">
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<title>My JSP 'login_action.jsp' starting page</title>
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<meta http-equiv="pragma" content="no-cache">
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<meta http-equiv="cache-control" content="no-cache">
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<meta http-equiv="expires" content="0">
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<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
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<meta http-equiv="description" content="This is my page">
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</head>
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<body>
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<%
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//获取页面数据
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request.setCharacterEncoding("utf-8");
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String username=request.getParameter("username");
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String userpwd=request.getParameter("userpwd");
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//调用Dao方法进行查询;
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UserDao ud=new UserDaoImpl();
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User user=ud.queryUserByNameAndPwd(username,userpwd);
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if(user!=null){//user:是一个登陆对象
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//如果登陆成功，则设置当前的session
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session.setAttribute("user",user);
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response.sendRedirect("welcome.jsp");//成功到欢迎页面;
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}else{
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session.setAttribute("msg","登陆失败，请检查用户名和密码");
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response.sendRedirect("login.jsp");//失败还回登陆页面
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}
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%>
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</body>
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</html>
文章来源: aaaedu.blog.csdn.net，作者：tea_year，版权归原作者所有，如需转载，请联系作者。
原文链接：aaaedu.blog.csdn.net/article/details/53053061
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