其中包含两个jsp文件，分别为login.jsp和index.jsp
代码如下:
login.jsp
<%@ 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=UTF-8"><title>登录界面</title></head><body><form action="index.jsp" method="post">用户名:<input type="text" name="name"/><input type="submit" value="提交"/></form></body></html>index.jsp
<%@ 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=UTF-8"><title>欢迎您</title></head><body><%String name = request.getParameter("name");if(name != null && !name.trim().equals("")){Cookie cookie = new Cookie("name",name);cookie.setMaxAge(30); //设置cookie有效期为30sresponse.addCookie(cookie);}else{Cookie[] cookies = request.getCookies();if(cookies != null && cookies.length > 0){for(Cookie cookie:cookies){String cookieName = cookie.getName();if("name".equals(cookieName)){String val = cookie.getValue();name = val;}}}}if(name != null && !name.trim().equals("")){out.print("hello: " + name);}else{//否则重定向到登录界面response.sendRedirect("login.jsp");}%></body></html>以上所述是小编给大家介绍的JavaWeb使用Cookie模拟实现自动登录功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！
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