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在跳转后能够取到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

測试URL：

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

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

项目源代码：