response对象

response表单：

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>response表单</title>
</head>
<body>
<DIV ALIGN="center">
请输入您的信息<br><br>
<form ACTION="response.jsp">
用户名:<input type=text name="name"><br>
密码:<input type=password name="key"><br>
<input type=submit value=提交>
<input type=reset value=重填>
</form>
</DIV>
</body>
</html>

response:

<%@page import="java.util.Date"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!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=ISO-8859-1">
<title>response对象</title>
</head>
<body>
<%
//获取用户名及密码
String name=request.getParameter("name");
String key=request.getParameter("key");
if(name==null) name="";
if(key==null) key="";
if(name.equals("")||key.equals(""))
{
    response.setCharacterEncoding("UTF-8");//设置响应编码
    //设置响应内容的类型
    response.setContentType("text/html;charset=UTF-8");
    response.sendRedirect("responseForm.html");
}else{
    out.println(name+": 欢迎您来到本网页！<BR>");
    out.println("当前时间是：<BR>"+new Date());
    response.setHeader("Refresh","5");
    out.println("<BR>注意该网页将每隔 5 秒刷新一次");
}
%>
</body>
</html>

如果账户密码不为空：

账户或密码为空，跳转至表单界面：

 

posted @ 2019-03-30 23:56  三茶散茶  阅读(129)  评论(0)    收藏  举报