SpringMVC使用Jackson返回JSON数据时Long类型数据精度丢失

问题展示：我们根据ID查询一条记录，发现发现返回记录的ID与输入值不同

测试代码：

@Controller
public class TestController {
    @ResponseBody
    @RequestMapping("test")
    public User test(@RequestParam Long id) {
        User user = new User(id, "测试");
        return user;
    }

    public class User {
        private Long id;
        private String name;

        public User(Long id, String name) {
            super();
            this.id = id;
            this.name = name;
        }

        public Long getId() {
            return id;
        }

        public void setId(Long id) {
            this.id = id;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }
    }
}

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