以下示例显示如何使用Spring Web MVC框架来实现多动作控制器的可参数化视图控制器。可参数化视图允许将请求映射到网页。
所下所示配置 -
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("user"); model.addObject("message", "Home"); return model; } }
URL映射配置文件如下 -
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> <property name="mappings"> <value> index.html=userController </value> </property> </bean> <bean id="userController" class="org.springframework.web.servlet.mvc.ParameterizableViewController"> <property name="viewName" value="index"/> </bean>
例如,使用上面的配置,如果URI:
/index.html
请求,DispatcherServlet
会将请求转发到UserController
控制器,并将viewName
设置为index.jsp
。首先,让我们使用Eclipse IDE,并按照以下步骤使用Spring Web Framework开发基于动态表单的Web应用程序:
com.zyiz.springmvc
包下创建一个Java类UserController
。jsp
子文件夹下创建一个视图文件:index.jsp
。完整的项目文件目录结构如下所示 -
UserController.java 的代码如下所示 -
package com.zyiz.springmvc; 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("user"); model.addObject("message", "Home"); return model; } }
ParameterizableViewController-servlet.xml 的代码如下所示 -
<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.SimpleUrlHandlerMapping"> <property name="mappings"> <value> index.html=userController </value> </property> </bean> <bean id="userController" class="org.springframework.web.servlet.mvc.ParameterizableViewController"> <property name="viewName" value="index"/> </bean> </beans>
index.jsp 的代码如下所示 -
<%@ page contentType="text/html; charset=UTF-8" %> <html> <head> <title>index.jsp Page</title> </head> <body> <h2>This is index.jsp page.</h2> </body> </html>
完成创建源和配置文件后,发布应用程序到Tomcat服务器。
现在启动Tomcat服务器,当访问URL => http://localhost:8080/ParameterizableViewController/index.html , 如果Spring Web应用程序没有问题,应该看到以下结果: