SpringMVC中controller的配置方式（1）

按照网上教程，学习了SpringMVC的第一步，如何在index.jsp中写Hello Spring MVC

M——Model 模型层 V——View视图层 C——Controller连接模型层与视图层的控制层

配置方式1

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
	<bean id="simpleUrlHandlerMapping"
	  class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
		<property name="mappings">
			<props>
				<prop key="/index">indexController</prop>
				<prop key="/hello">helloController</prop>
			</props>
		</property>  
	</bean>
	<bean id="indexController" class="controller.IndexController"></bean>
	<bean id="helloController" class="controller.HelloController"></bean>
</beans>

即使用一个统一配置集合，对各个url对应的controller 进行映射。根据相应的url先找到要实例化的controller的bean的id，再去寻找对应的controller类。

在Controller类中，应使对应的xxxController执行Controller接口，编写handleRequest方法

package controller;

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

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

public class IndexController implements Controller{

	@Override
	public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
		// TODO Auto-generated method stub
		ModelAndView mav = new ModelAndView("index.jsp");
		mav.addObject("message","Hello Spring MVC");
		return mav;
	}
	
}

最后编写对应的jsp页面。比如这个例子中controller里设置了message,就在对应的jsp页面里用EL表达式将message内容显示出来。

第二种配置方式

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        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 id="urlHandler" class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>

<bean name="/hello" class="controller.HelloController"/>
</beans>