JSP cookie用法

2009 - 03 - 31 　作者：　来源：　浏览：558 　评论：条发布评论问高手

<%@page contentType="text/html;charset=GB2312"%>

int counter = 0;

//得到所有的Cookie

//与其它内置对象不同，Cookie首字母大写

Cookie cookies[] = request.getCookies();

//request对象获取Cookie

if (cookies != null) {

for (int i = 0; i < cookies.length; i++) {

if (cookies[i].getName().equals("counter"))

counter = Integer.parseInt(cookies[i].getValue()) + 1;

}

// 首次登陆，需要创建Cookie ；以后登陆，需更新Cookie

Cookie c = new Cookie("counter", "" + counter);

c.setMaxAge(60 * 60 * 24 * 365); //设置Cookie有效期

response.addCookie(c);

//response对象添加Cookie

<html>

<head>

</head>

if (counter == 0)

out.println("First!Welcome!");

else

out.println(counter + " times!");

</body>

</html>

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