第8次
作者：互联网
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<script type="text/javascript">
function yz(){
if (fm.uname.value=="") {
alert("请输入账号");
return;
}
else if (fm.pas.value=="") {
alert("请输入密码");
return;
}
fm.submit();
}
</script>
<body>
<form action="logindo.jsp" name="fm">
用户名：<input type="text" name="uname" />
密码：<input type="password" name="pas" />
<input type="button" value="登录" onclick="yz()" />
</form>
</body>
</html>
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<%
String uname=request.getParameter("uname");
String pas=request.getParameter("pas");
if(uname.equals(pas)){
session.setAttribute("uname", uname);
request.getRequestDispatcher("session.jsp").forward(request, response);
}
else{
response.sendRedirect("no.jsp");
}
%>
</body>
</html>
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<%
session.invalidate();
response.setHeader("refresh", "5;url=login.jsp");
%>
退出成功！
</body>
</html>
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<%
String uname=(String)session.getAttribute("uname");
//如果他是空，说明没登陆，直接访问该页面了
if(uname==null)
response.sendRedirect("login.jsp");
%>
欢迎你<%=uname %>
<a href="loginout.jsp">退出登录</a>
</body>
</html>
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标签：,body,String,request,uname,HTML,path 来源： https://www.cnblogs.com/nnnn1234/p/16435528.html