Springmvc 简明教程

Spring MVC - Multi Action Controller Example

以下示例展示了如何使用Spring Web MVC框架使用Multi Action Controller。 MultiActionController 类帮助分别将多个URL与其方法映射到单个控制器。

package com.tutorialspoint;

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

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("home");
      model.addObject("message", "Home");
      return model;
   }

   public ModelAndView add(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Add");
      return model;
   }

   public ModelAndView remove(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Remove");
      return model;
   }
}
<bean class = "org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<bean name = "/home.htm" class = "com.tutorialspoint.UserController" />
<bean name = "/user/*.htm" class = "com.tutorialspoint.UserController" />

例如，使用以上配置，如果请求 URI −

  1. 请求/home.htm，DispatcherServlet将转发请求到UserController home() 方法。

  2. 请求user/add.htm，DispatcherServlet将转发请求到UserController add() 方法。

  3. 请求user/remove.htm，DispatcherServlet将转发请求到UserController remove() 方法。

首先，让我们准备一个可用的Eclipse IDE，并坚持以下步骤，使用Spring Web框架开发基于动态表单的Web应用程序。

Step

Description

1

如 Spring MVC 的 Hello World 章节中所述，在 com.tutorialspoint 包下创建一个以 TestWeb 命名的项目。

2

在 com.tutorialspoint 包下创建 Java 类 UserController。

3

在jsp子文件夹下创建视图文件home.jsp和user.jsp。

4

最后一步是创建源文件和配置文件的内容，然后按如下所述导出应用程序。

UserController.java

package com.tutorialspoint;

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

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class UserController extends MultiActionController{

   public ModelAndView home(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("home");
      model.addObject("message", "Home");
      return model;
   }

   public ModelAndView add(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Add");
      return model;
   }

   public ModelAndView remove(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("user");
      model.addObject("message", "Remove");
      return model;
   }
}

TestWeb-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">

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

   <bean class = "org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
   <bean name = "/home.htm"
      class = "com.tutorialspoint.UserController" />
   <bean name = "/user/*.htm"
      class = "com.tutorialspoint.UserController" />
</beans>

home.jsp

<%@ page contentType = "text/html; charset = UTF-8" %>
<html>
   <head>
      <meta http-equiv = "Content-Type" content = "text/html; charset = ISO-8859-1">
      <title>Home</title>
   </head>

   <body>
      <a href = "user/add.htm" >Add</a> <br>
      <a href = "user/remove.htm" >Remove</a>
   </body>
</html>

user.jsp

<%@ page contentType = "text/html; charset = UTF-8" %>
<html>
   <head>
      <title>Hello World</title>
   </head>
   <body>
      <h2>${message}</h2>
   </body>
</html>

一旦你创建完资源文件和配置文件，导出你的应用程序。右键点击你的应用程序，使用 Export → WAR File 选项并在Tomcat的webapps文件夹中保存 TestWeb.war 文件。

现在，启动您的Tomcat服务器，并确保您可以使用标准浏览器从webapps文件夹访问其他网页。现在，尝试URL − http://localhost:8080/TestWeb/home.htm ，如果Spring Web应用程序一切正常，我们将看到以下屏幕。

spring multiaction controller

尝试URL http://localhost:8080/TestWeb/user/add.htm ，如果Spring Web应用程序一切正常，我们将看到以下屏幕。

spring multiaction controller1