java中与JSON相关应用

	 
            com.alibaba
            fastjson
            1.2.78
     

String msg = "{"cmd":"domainRestrictType","sandbox":"DefaultBox","domainRestrictList":[{"domainRestrictList":["192.138.3.168:1111"],"domainRestrictType":"black"}]}";

//转化
JSONObject jsonObject = JSON.parseObject(msg);

//取值
String cmd = jsonObject.getString("cmd")；

//对象
User user= new User();
		user.setId(1);
		user.setName("lhs");
		user.setPass("aaa");
		
//转化
String aaaJson = json.toJSONString(user);

@Data
//该注解为自定义顺序，在order里面配置
@JSONType(orders = {"cmd","sandbox","domainRestrictionList"})
public class SandboxAccessRestrictionDTO {

    private String cmd;

    private String sandbox;

    private List domainRestrictList;

    @Data
    @JSONType(orders = {"domainRestrictionType","domainRestrictionList"})
    public static class accessRestriction {

        private String domainRestrictType;

        private List domainRestrictList;
    }

}

// 在哪里调用这个java对象转json，newjson对象的时候，参数中加个true
JSONObject json = new JSONObject(true);