以下示例说明如何使用Spring Web MVC框架使用Multi Action Controller. MultiActionController 类有助于分别在单个控制器中映射多个URL及其方法.
package com.it1352; 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; }}
例如,使用上述配置,如果URI :
/home.htm被请求,DispatcherServlet会将请求转发给UserController home()方法.
请求user/add.htm,DispatcherServlet会将请求转发给UserController add()方法.
user/remove请求.htm,DispatcherServlet会将请求转发给UserController remove()方法.
开始使用,让我们有一个可用的Eclipse IDE,并坚持以下步骤使用Spring Web Framework开发基于动态表单的Web应用程序.
Step | 描述 |
---|---|
1 | 在com.IT包下创建名为 TestWeb 的项目如Spring MVC中所解释的那样 - Hello World ch apter. |
2 | 创建Java类UserController在com.it1352包下. |
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并导出应用程序,如下所述. |
UserController.java
package com.it1352; 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
home.jsp
<%@ page contentType = "text/html; charset = UTF-8" %>Home Add
Remove
user.jsp
<%@ page contentType = "text/html; charset = UTF-8" %>Hello World ${message}
完成创建源文件和配置文件后,导出应用程序.右键单击您的应用程序,使用 Export → WAR文件选项并将 TestWeb.war 文件保存在Tomcat的webapps文件夹中.
现在,启动Tomcat服务器并确保能够使用标准浏览器从webapps文件夹访问其他网页.现在,尝试一下URL : http://localhost:8080/TestWeb/home.htm 如果Spring Web Application的一切正常,我们将看到以下屏幕.
尝试URL http://localhost:8080/TestWeb/user/add .htm 如果弹出Web应用程序一切正常,我们将看到以下屏幕.