1. package web;
   
2. 
   
3. import java.io.IOException;
   
4. import java.io.PrintWriter;
   
5. 
   
6. import javax.servlet.ServletException;
   
7. import javax.servlet.http.Cookie;
   
8. import javax.servlet.http.HttpServlet;
   
9. import javax.servlet.http.HttpServletRequest;
   
10. import javax.servlet.http.HttpServletResponse;
    
11. 
    
12. public class SaveCookie extends HttpServlet {
    
13. public void doGet(HttpServletRequest request, HttpServletResponse response)
    
14. throws ServletException, IOException {
    
15. Cookie cookie =new Cookie("username","王武");//换成中文后就错了，怎么改变编码呢？
    
16. Cookie cookie2 =new Cookie("password","test");
    
17. cookie2.setMaxAge(40);
    
18. response.addCookie(cookie);
    
19. response.addCookie(cookie2);
    
20. response.setContentType("text/html");
    
21. PrintWriter out = response.getWriter();
    
22. out.println("<h1>add cookie success<h2>");
    
23. out.close();
    
24. }
    
25. }
    
26. 如何中文也能被保存？

复制代码

Cookie cookie=new Cookie("username",java.net.URLEncoder.encode("王武","gbk"));然后把页面编码也设置成gbk，应该就可以了，你试试

response.setCharacterEncoding("UTF-8");

放在Cookie实例化之前.

而且项目的编码格式也最好使用UTF-8.乱码问题就很少了.