springMVC3学习(九)--redirect和forward跳转

springMVC3redirectforward

[java] view plaincopyprint?

1. import javax.servlet.http.HttpServletRequest; 
2. import javax.servlet.http.HttpServletResponse;
3. import org.springframework.stereotype.Controller; 
4. import org.springframework.web.bind.annotation.RequestMapping; 
5.  
6. @Controller 
7. public class Login{ 
8.      
9.         /**转发**/ 
10.     @RequestMapping("/login.do") 
11.     public String login(HttpServletRequest request,HttpServletResponse  
12.  
13. response){ 
14.         request.setAttribute("message","hello"); 
15.         return "forward:/index.do"; //forward在跳转后可以取到message值 
16.     } 
17.     @RequestMapping("/index.do") 
18.     public String index(HttpServletRequest request,HttpServletResponse  
19.  
20. response){ 
21.         return "welcome"; 
22.     } 
23.      
24.     /**重定向**/ 
25.     @RequestMapping("/logout.do") 
26.     public String logout(HttpServletRequest request,HttpServletResponse
27.  
28. response){ 
29.         request.setAttribute("message","hello"); 
30.         return "redirect:/register.do"; //redirect在跳转后无法取到message 
31.  
32. 值 
33.     } 
34.     @RequestMapping("/register.do") 
35.     public String register(HttpServletRequest request,HttpServletResponse  
36.  
37. response){ 
38.         return "register"; 
39.     } 
40. } 

import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controllerpublic class Login{        /**转发**/@RequestMapping("/login.do")public String login(HttpServletRequest request,HttpServletResponse response){request.setAttribute("message", "hello");return "forward:/index.do";  //forward在跳转后可以取到message值}@RequestMapping("/index.do")public String index(HttpServletRequest request,HttpServletResponse response){return "welcome";}/**重定向**/@RequestMapping("/logout.do")public String logout(HttpServletRequest request,HttpServletResponse response){request.setAttribute("message", "hello");return "redirect:/register.do";  //redirect在跳转后无法取到message值}@RequestMapping("/register.do")public String register(HttpServletRequest request,HttpServletResponse response){return "register";}}

另外forward跳转后地址栏URL不会改变 而redirect会改变

测试URL：

http://localhost:8080/spring_forward/login.do

http://localhost:8080/spring_forward/logout.do