后端控制器之CommandController、 FormController（三）

另一种表单封装的参数的Controller是AbstractCommandController，在SpringMVC学习笔记(二) --- 后端控制器之CommondController、 FormController（一） 也说到了使用这种方式不是太方便，但是作为学习，还是值得看看。

先看下springmvc-servlet.xml

Xml代码

1. <?xml version="1.0" encoding="UTF-8" ?> 
2. <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> 
3. <beans> 
4.      <!-- 定义Bean --> 
5.      <bean id="registrationCommandController" class="com.wy.controller.RegistrationCommandController"> 
6.         <property name="commandClass" value="com.wy.pojo.User" /> 
7.      </bean> 
8.      <bean name="/simpleImplementsController.do" class="com.wy.controller.SimpleImplementsController"/> 
9.          
10.      <!-- 映射处理器 --> 
11.      <bean id="simpleUrlHandlerMapping" 
12.         class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"> 
13.         <property name="mappings"> 
14.             <props> 
15.                 <prop key="/register.do">registrationCommandController</prop> 
16.             </props> 
17.         </property> 
18.         <property name="order" value="1"></property> 
19.     </bean> 
20.     <bean id="beanNameUrlHandlerMapping" 
21.         class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"> 
22.         <property name="order" value="0"></property> 
23.     </bean>    
24.      
25.     <!-- 视图解析器策略和视图解析器 --> 
26.     <bean id="internalResourceViewResolver" 
27.         class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
28.         <property name="viewClass" 
29.             value="org.springframework.web.servlet.view.InternalResourceView" /> 
30.         <property name="prefix" value="/WEB-INF/page/" /> 
31.         <property name="suffix" value=".jsp" /> 
32.     </bean> 
33. </beans> 

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
     <!-- 定义Bean -->
     <bean id="registrationCommandController" class="com.wy.controller.RegistrationCommandController">
        <property name="commandClass" value="com.wy.pojo.User" />
     </bean>
	 <bean name="/simpleImplementsController.do" class="com.wy.controller.SimpleImplementsController"/>
	 	
     <!-- 映射处理器 -->
     <bean id="simpleUrlHandlerMapping"
		class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
		<property name="mappings">
			<props>
				<prop key="/register.do">registrationCommandController</prop>
			</props>
		</property>
		<property name="order" value="1"></property>
	</bean>
	<bean id="beanNameUrlHandlerMapping"
		class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">
		<property name="order" value="0"></property>
	</bean>	
	
	<!-- 视图解析器策略和视图解析器 -->
	<bean id="internalResourceViewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.InternalResourceView" />
		<property name="prefix" value="/WEB-INF/page/" />
		<property name="suffix" value=".jsp" />
	</bean>
</beans>

前面的文章也提到了使用AbstractCommandController来封装表单参数是需要维护两个Controller。

SimpleImplementsController.java

Java代码

1. package com.wy.controller; 
2.  
3. import javax.servlet.http.HttpServletRequest; 
4. import javax.servlet.http.HttpServletResponse; 
5.  
6. import org.springframework.web.servlet.ModelAndView; 
7. import org.springframework.web.servlet.mvc.Controller; 
8.  
9. /**
10. * 实现Controller和继承AbstractContoller功能是一样的
11. *
12. * @author Administrator
13. * @version Sep 17, 2011
14. */ 
15. public class SimpleImplementsController implements Controller { 
16.      
17.     @Override 
18.     public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception { 
19.  
20.         ModelAndView mav = new ModelAndView("login");//逻辑视图名称 
21.         mav.addObject("msg", "Hello World! Implements Controller"); 
22.         return mav; 
23.     } 
24.  
25. } 

package com.wy.controller;

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

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

/**
 * 实现Controller和继承AbstractContoller功能是一样的
 *
 * @author Administrator
 * @version Sep 17, 2011
 */
public class SimpleImplementsController implements Controller {
	
	@Override
	public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {

		ModelAndView mav = new ModelAndView("login");//逻辑视图名称
		mav.addObject("msg", "Hello World! Implements Controller");
		return mav;
	}

}

RegistrationCommandController.java

Java代码

1. package com.wy.controller; 
2.  
3. import javax.servlet.http.HttpServletRequest; 
4. import javax.servlet.http.HttpServletResponse; 
5.  
6. import org.springframework.validation.BindException; 
7. import org.springframework.web.servlet.ModelAndView; 
8. import org.springframework.web.servlet.mvc.AbstractCommandController; 
9.  
10. import com.wy.pojo.User; 
11.  
12. /**
13. *
14. *
15. * @author Administrator
16. * @version 2011-10-7
17. */ 
18. @SuppressWarnings("deprecation") 
19. public class RegistrationCommandController extends AbstractCommandController{ 
20.      
21.     /**
22.      * 构造器
23.      */ 
24.     public RegistrationCommandController(){ 
25.         //也可以在spmvc-servlet.xml中定义 
26.         //<property name="commandClass" value="com.wy.pojo.User" /> 
27.         setCommandClass(User.class);//为控制器类指定命名类对象 
28.     } 
29.  
30.     @Override 
31.     protected ModelAndView handle(HttpServletRequest request, HttpServletResponse response, Object command, 
32.             BindException exception) throws Exception 
33.     { 
34.         ModelAndView mav = new ModelAndView("edit"); 
35.         User user = (User)command; 
36.         System.out.println(user); 
37.         return mav; 
38.     } 
39.  
40. }