spring mvc 返回json 几个关键配置

1、@ResponseBody

2、添加 jackson 依赖

<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.10</version>
</dependency>

3、启动spring mvc 注解  <mvc:annotation-driven />

4、procedurces

@RequestMapping(method = RequestMethod.GET, produces = "application/json")