【Spring学习笔记-MVC-18.1】Spring MVC实现RESTful风格-同一资源,多种展现:xml-json-html

1. GET /user/123 HTTP/1.1  
2. Accept: application/xml                 //将返回xml格式数据  
3.   
4. GET /user/123 HTTP/1.1  
5. Accept: application/json               //将返回json格式数据  

• 方式2：使用扩展名
  

1. /user/123?format=xml          //将返回xml数据  
2. /user/123?format=json          //将返回json数据  

1. xpp3_min-xxx.jar;
2. xstream-xxx.jar。

• /user/123.html 
  
• /user/123?format=html 
  

• /user/123
  

<?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:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context" 
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	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
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
       
	<!-- 扫描web包，应用Spring的注解 -->
	<context:component-scan base-package="com.ll.web"/>
	
	<mvc:annotation-driven/>
	<!-- 协商多种视图解析器 -->
	<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver"
		p:order="0" 
		p:ignoreAcceptHeader="true" 
		p:favorPathExtension="true"
		p:favorParameter="true" 
		p:parameterName="format" 
		p:defaultContentType="text/html">
	    <!-- 用来定义哪些扩展名（如：/user/123.json），或协商参数值（如：/user/123?format=xml)是可识别的 -->
		<property name="mediaTypes">
			<map>
				<entry key="html" value="text/html" />
				<entry key="xml" value="application/xml" />
				<entry key="json" value="application/json" />
			</map>
		</property>
		
		<property name="defaultViews">
			<list>
			    <!-- for application/json --> 
				<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView"/>
			    
			    <!-- for application/xml -->
				<bean class="org.springframework.web.servlet.view.xml.MarshallingView">
				   <property name="marshaller">  
                      <bean class="org.springframework.oxm.xstream.XStreamMarshaller"/>  
                   </property> 
				</bean> 
			</list>
		</property>
	</bean>
	<!-- Excel及PDF视图解析器配置 -->
	<bean class="org.springframework.web.servlet.view.BeanNameViewResolver"
		p:order="10" />
	
	<!-- 配置视图解析器，将ModelAndView及字符串解析为具体的页面，默认优先级最低 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver"
		p:order="100"
		p:viewClass="org.springframework.web.servlet.view.JstlView" 
		p:prefix="/resource/jsp/"
		p:suffix=".jsp" />
	<!-- spring mvc对静态资源的访问 -->
	<mvc:resources mapping="/resource/**" location="/resource/**" />
	
</beans>