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; } } <bean class = "org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/> <bean name = "/home.htm" class = "com.IT屋.UserController" /> <bean name = "/user/*.htm" class = "com.IT屋.UserController" />
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. |
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; } }
<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.IT屋.UserController" /> <bean name = "/user/*.htm" class = "com.IT屋.UserController" /> </beans>
<%@ 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>
<%@ page contentType = "text/html; charset = UTF-8" %> <html> <head> <title>Hello World</title> </head> <body> <h2>${message}</h2> </body> </html>
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.