获取一言 API 内容

cookie使用 

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>cookie测试</title>
</head>

<body>

<form method="post" name="form">
    <table>
       <tr>
       		<td>
       			用户名：<input type="text" name="user">
       		</td>
       </tr>
             <tr>     
       		<td>
       			<input type="submit" value="登录">
       		</td>
       </tr>
    </table>
</form>

<%
    Cookie[] c = request.getCookies();
    Cookie c1;
    if (c != null) 
    {
        for (int i = 0; i < c.length; i++) 
        {
            c1 = c[i];
            String a = c1.getName();
            String b = c1.getValue();
            if (a.equals("1")) 
            {  
                if (b != null && !b.trim().isEmpty()) 
                {  
                    response.sendRedirect("success.jsp");
                }
            }
        }
    }
%>
<%
    String user = request.getParameter("user");
	Cookie cuser=new Cookie("1",user);
	cuser.setMaxAge(20);
	response.addCookie(cuser);
%>

</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>success</title>
</head>

<body>
<h1>登录成功</h1>
<%
Cookie[]t=request.getCookies();
for(int i=0;i<t.length;i++)
{
	Cookie t1=t[i];
	String s=t1.getName();
	if(s.equals("1"))
	{
		out.println("欢迎"+t1.getValue());		
	}
}
%>
</body>
</html>

cuser.setMaxAge(20); 更改cookie存在时间，0表示存放浏览器后立即失效，负数表示关闭浏览器后立即失效。单位为秒

运行效果



20秒内重新访问该网址可以不用登录，直接到欢迎界面

posted @ 2024-10-20 19:37  奇怪的知识增加了  阅读(13)  评论(0)    收藏  举报
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