笔记18 客户端跳转

在前面的例子中，无论是/index跳转到index.jsp 还是/addProduct 跳转到showProduct.jsp，都是服务器跳转。 
本例讲解如何进行客户端跳转

1.修改IndexController

首先映射/jump到jump()方法
在jump()中编写如下代码：ModelAndView mav = new ModelAndView("redirect:/index");

redirect:/index：即表示客户端跳转的意思

package controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class IndexController {
    @RequestMapping("/index")
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {

        ModelAndView mav = new ModelAndView("index");
        mav.addObject("message", "Hello Spring MVC——————客户端跳转");
        return mav;
    }

    @RequestMapping("/jump")
    public ModelAndView jump() {
        ModelAndView mav = new ModelAndView("redirect:/index");
        return mav;
    }
}

2.测试

访问页面：http://localhost:8080/MySpringMVC5/jump

结果客户端跳转到了：http://localhost:8080/MySpringMVC5/index