spring 3.1 m 配置json

参考了以下2个帖子

http://fhd001.iteye.com/blog/1136428

http://hi.baidu.com/lizhm/blog/item/a197e6116f8926d4a7ef3fa7.html

用的之前的工程。额外添加spring自动转JSON支持

导包

jackson-core-asl-1.5.6.jar      jackson-mapper-asl-1.5.6.jar

spring配置文件   在之前的配置之上修改了

    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" >
        <property name="messageConverters">
             <util:list id="beanList">  
                 <ref bean="json_demo"/>
             </util:list> 
        </property>
    </bean>     	
	
<bean id="json_demo" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />

controller中   方法返回obj 并加上注解 @reponseBody   这样spring就能把对象给你转成json格式返回

	@RequestMapping("/demo_graph.do")
	@ResponseBody
	public Object demo()throws Exception { 		
		String keyword_data = "[['Cup Holder Pinion Bob', 7], ['Generic Fog Lamp', 9], ['HDTV Receiver', 15],['8 Track Control Module', 12], [' Sludge Pump Fourier Modulator', 3],['Transcender/Spice Rack', 6], ['Hair Spray Danger Indicator', 18]]";
		String keyword_title = "[1,2,4,5,3]";
		String keyword_timeTitle = "";
		
		Graph g = new Graph();
		g.setName("keyword");
		g.setGraph_data(keyword_data);
		g.setGraph_dateTime(keyword_timeTitle);
		g.setGraph_title(keyword_title);
                
                return g;
	}

JS页面调用

       $.ajax({
		url : "demo_graph.do",
		dataTpye : "json",
		success : function(data) {
			alert(data.graph_title);
		}
	});