spring-mvc ajax请求未显示重定向页面

小编典典

spring-mvc ajax请求未显示重定向页面

spring-mvc

在我的Spring MVC应用程序中，我想使用AJAX
index.jsp在final.jsp页面之间重定向我的页面。但是，当我单击Redirect Page应用程序中的按钮时，未显示重定向页面（final.jsp）。我已经使用Java代码System.out.println("inside /redirect");并System.out.println("inside /finalPage");在Java代码内部检查了是否在服务器上接收到AJAX GET请求，并且仅inside /redirect在打印该消息，这意味着/finalPage未在调用AJAX
GET请求。而且，我的浏览器的控制台没有显示任何错误。因此，请告诉我们，问题可能出在哪里，问题出在哪里？我在下面发布了完整的代码：

WebController.java

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";
   }
}

index.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>

final.jsp

<%@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>

web.xml：

<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>

HelloWeb-servlet.xml

<beans xmlns = "http://www.springframework.org/schema/beans"
   xmlns:context = "http://www.springframework.org/schema/context"
   xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation = "
   http://www.springframework.org/schema/beans     
   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
   http://www.springframework.org/schema/context 
   http://www.springframework.org/schema/context/spring-context-3.0.xsd">

   <context:component-scan base-package = "com.tutorialspoint" />

   <bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
      <property name = "prefix" value = "/WEB-INF/jsp/" />
      <property name = "suffix" value = ".jsp" />
   </bean>

</beans>

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2020-06-01

共1个答案

小编典典

您的浏览器未遵循重定向，因为您使用的是Ajax来访问控制器的重定向方法。您有两种选择：

完全不要使用ajax，让您的浏览器自然地响应重定向状态。
```
function redFun() {
window.location = "/HelloWeb/redirect";
```
}

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');
    }    
});

}

2020-06-01