JSP Cookie中文问题s

关于Cookie的中文问题

如果出现Cookie不能保存中文字符问题，可以导入Java.net.*包

使用其中的URLEncoder.encode()方法编码和URLDecoder.decode()方法解码

示例如下：

<%@ page language="java" import="java.util.*,java.net.*" contentType="text/html; charset=utf-8"%>
  <% 
  	request.setCharacterEncoding("utf-8");
  	String username="";
  	String password="";
 	 	Cookie[] cookies=request.getCookies();
 	 	if(cookies!=null&&cookies.length>0){
 	 		for(Cookie c:cookies){
 	 			if(c.getName().equals("username")||c.getName().equals("password")){
 	 				username=URLDecoder.decode(c.getValue(),"utf-8");
 	 			}
 	 			if(c.getName().equals("password")){
 	 				password=URLDecoder.decode(c.getValue(),"utf-8");
 	 			}
 	 		}
 	 	}
  %>

<%@ page language="java" import="java.util.*,java.net.*" contentType="text/html; charset=utf-8"%>
  <% 
  	String [] isUseCookies=request.getParameterValues("isUseCookie");
  	if(isUseCookies!=null&&isUseCookies.length>0){
  		String username=URLEncoder.encode(request.getParameter("username"),"utf-8");
  		String password =URLEncoder.encode(request.getParameter("password"),"utf-8");
  		Cookie usernameCookie=new Cookie("username",username);
  		Cookie passwordCookie = new Cookie("password",password);
  		usernameCookie.setMaxAge(864000);
  		passwordCookie.setMaxAge(864000);
  		response.addCookie(usernameCookie);
  		response.addCookie(passwordCookie);
 	 }else{
 	 	Cookie[] cookies=request.getCookies();
 	 	if(cookies!=null&&cookies.length>0){
 	 		for(Cookie c:cookies){
 	 			if(c.getName().equals("username")||c.getName().equals("password")){
 	 				c.setMaxAge(0);
 	 				response.addCookie(c);
 	 			}
 	 		}
 	 	}
 	 }
  %>