spring-mvc ajax请求没有显示重定向的页面

时间:2018-01-31 15:07:19

标签: java ajax spring jsp spring-mvc

在我的Spring MVC应用程序中,我想使用AJAX将页面从index.jsp页面重定向到final.jsp页面。但是,当我单击应用程序中的Redirect Page按钮时,未显示重定向页面(final.jsp)。我在我的Java代码中使用System.out.println("inside /redirect");System.out.println("inside /finalPage");来检查是否在服务器上接收到AJAX GET请求,并且只打印inside /redirect这意味着{{ 1}}没有被调用。此外,我的浏览器控制台没有显示任何错误。那么请告诉我,问题是什么,问题出在哪里?我在下面发布了完整的代码:

WebController.java

/finalPage

的index.jsp

package com.tutorialspoint;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class WebController {

   @RequestMapping(value = "/index", method = RequestMethod.GET)
   public String index() {
       return "index";
   }

   @RequestMapping(value = "/redirect", method = RequestMethod.GET)
   public String redirect() {
      System.out.println("inside /redirect");
      return "redirect:/finalPage";
   }

   @RequestMapping(value = "/finalPage", method = RequestMethod.GET)
   public String finalPage() {
       System.out.println("inside /finalPage");
      return "final";
   }
}

final.jsp

<%@taglib uri = "http://www.springframework.org/tags/form" prefix = "form"%>
<html>
   <head>
      <title>Spring Page Redirection</title>
      <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
   </head>
   <body>
      <h2>Spring Page Redirection</h2>
      <p>Click below button to redirect the result to new page</p>
      <button onClick="redFun()">Redirect Page</button>
      <script>
            function redFun() {
                $.ajax({
                    type : "GET",
                    url : "/HelloWeb/redirect"
                });
            }
      </script>
   </body>
</html>

的web.xml:

<%@taglib uri = "http://www.springframework.org/tags/form" prefix = "form"%>
<html>

   <head>
      <title>Spring Page Redirection</title>
   </head>

   <body>
      <h2>Redirected Page</h2>
   </body>

</html>

的HelloWeb-servlet.xml中

<web-app id = "WebApp_ID" version = "2.4"
   xmlns = "http://java.sun.com/xml/ns/j2ee" 
   xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation = "http://java.sun.com/xml/ns/j2ee 
   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

   <display-name>Spring MVC Application</display-name>

   <servlet>
      <servlet-name>HelloWeb</servlet-name>
      <servlet-class>
         org.springframework.web.servlet.DispatcherServlet
      </servlet-class>
      <load-on-startup>1</load-on-startup>
   </servlet>

   <servlet-mapping>
      <servlet-name>HelloWeb</servlet-name>
      <url-pattern>/</url-pattern>
   </servlet-mapping>

</web-app>

1 个答案:

答案 0 :(得分:1)

您的浏览器未遵循重定向,因为您正在使用ajax来点击控制器的重定向方法。您有两种选择:

  1. 根本不使用ajax,让浏览器自然地回复重定向状态。

    function redFun() {
        window.location = "/HelloWeb/redirect";
    }
    
  2. 查找对XmlHttpRequest的HTTP 302响应,并将window.location更改为响应中Location头的值:

    function redFun() {
        $.ajax({
            type: "GET",
            url: "/HelloWeb/redirect"
        }).fail(function (jqXHR, status, err) {
            if (jqXHR.status === 302) {
                window.location = jqXHR.getResponseHeader('Location');
            }    
        });
    }