spring-mvc ajax请求未显示重定向页面 [英] redirected page is not being displayed with spring-mvc ajax request
问题描述
在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，当我在应用程序中单击Redirect Page按钮时，未显示重定向页面(final.jsp).我在Java代码中使用了System.out.println("inside /redirect");和System.out.println("inside /finalPage");来检查是否在服务器上接收到AJAX GET请求，并且仅打印inside /redirect，这意味着未调用/finalPage.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:
In my Spring MVC application, I want to redirect my page from index.jsp page to final.jsp page using AJAX. But the redirected page (final.jsp) is not being displayed when I click the Redirect Page button in my application. I have used System.out.println("inside /redirect"); and System.out.println("inside /finalPage"); inside my Java code to check whether the AJAX GET request is being received at server or not, and only inside /redirect is being printed which which means that the /finalPage is not being called. Moreover, my browser's console does not show any error. So please tell, what can be the problem and where is that problem? I have posted my complete code below:
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>
推荐答案
您的浏览器未遵循重定向，因为您正在使用ajax来访问控制器的重定向方法.您有两种选择:
Your browser is not following the redirect because you're using ajax to hit your controller's redirect method. You have two options:
-
完全不使用ajax，让您的浏览器自然地响应重定向状态.
Don't use ajax at all, and let your browser respond naturally to the redirect status.
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标头的值:
Look for an HTTP 302 response to the XmlHttpRequest, and change window.location to the value of the Location header in the response:
function redFun() {
$.ajax({
type: "GET",
url: "/HelloWeb/redirect"
}).fail(function (jqXHR, status, err) {
if (jqXHR.status === 302) {
window.location = jqXHR.getResponseHeader('Location');
}
});
}
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