Springmvc 简明教程

Spring MVC - Page Redirection Example

以下示例演示了如何编写一个简单的基于 web 的应用程序，该应用程序使用重定向将一个 http 请求传输到另一个页面。首先，让我们准备一个可用的 Eclipse IDE，并考虑按照以下步骤使用 Spring Web Framework 开发一个基于动态表单的 Web 应用程序 −

The following example shows how to write a simple web based application, which makes use of redirect to transfer an http request to another page. To start with, let us have a working Eclipse IDE in place and consider the following steps to develop a Dynamic Form based Web Application using Spring Web Framework −

Step

Description

1

Create a project with a name HelloWeb under a package com.tutorialspoint as explained in the Spring MVC - Hello World chapter.

2

Create a Java class WebController under the com.tutorialspoint package.

3

Create view files index.jsp, final.jsp under jsp sub-folder.

4

The final step is to create the content of the source and configuration files and export the application as explained 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() {

      return "redirect:finalPage";
   }

   @RequestMapping(value = "/finalPage", method = RequestMethod.GET)
   public String finalPage() {

      return "final";
   }
}

以下是 Spring 视图文件中的内容 index.jsp 。这将是一个着陆页，此页面将向 access-redirect 服务方法发送一个请求，该方法将此请求重定向到另一个服务方法，最后将显示一个 final.jsp 页面。

Following is the content of Spring view file index.jsp. This will be a landing page, this page will send a request to the access-redirect service method, which will redirect this request to another service method and finally a *final.jsp*page will be displayed.

index.jsp

<%@taglib uri = "http://www.springframework.org/tags/form" prefix = "form"%>
<html>
   <head>
      <title>Spring Page Redirection</title>
   </head>
   <body>
      <h2>Spring Page Redirection</h2>
      <p>Click below button to redirect the result to new page</p>
      <form:form method = "GET" action = "/HelloWeb/redirect">
         <table>
            <tr>
               <td>
                  <input type = "submit" value = "Redirect Page"/>
               </td>
            </tr>
         </table>
      </form:form>
   </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>

一旦你完成了创建源文件和配置文件，导出你的应用程序。右键单击你的应用程序，使用“导出 → WAR 文件”选项并将你的 HelloWeb.war 文件保存到 Tomcat 的 Webapps 文件夹中。

Once you are done with creating source and configuration files, export your application. Right click on your application, use Export → WAR File option and save your HelloWeb.war file in Tomcat’s webapps folder.

现在，启动你的 Tomcat 服务器并确保你能够使用标准浏览器访问 Webapps 文件夹中的其他网页。尝试一个 URL -http://localhost:8080/HelloWeb/index，如果 Spring Web 应用程序一切正常，你应该会看到以下屏幕。

Now, start your Tomcat server and make sure you are able to access other webpages from webapps folder using a standard browser. Try a URL –http://localhost:8080/HelloWeb/index and you should see the following screen if everything is fine with the Spring Web Application.

spring redirect form

现在单击“重定向页面”按钮以提交表单并转到最终重定向页面。如果我们的 Spring Web 应用程序一切正常，我们应该会看到以下屏幕 −

Now click on the "Redirect Page" button to submit the form and to get to the final redirected page. We should see the following screen, if everything is fine with our Spring Web Application −

spring redirect form result