关于springmvc返回json格式数据

1.引入maven依赖

 <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
             <version>2.9.3</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-core</artifactId>
             <version>2.9.3</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-annotations</artifactId>
             <version>2.9.3</version>
 </dependency>

maven依赖

2.配置注解

 <!-- 使用默认的注解映射 -->
 <mvc:annotation-driven />

注解配置

3.使用@ResponseBody

  @RequestMapping("/getJson")
     @ResponseBody
     public Object getJson(){
         User user = new User();
         user.setId("123");
         user.setName("里哈");
         return user;
     }

代码示例