- 定义一个相对通用的JSON响应结构，其中包含两部分：元数据与返回值，其中，元数据表示操作是否成功与返回值消息等，返回值对应服务端方法所返回的数据。
public class Response { ???private static final String OK = "ok"; ???private static final String ERROR = "error"; ???private Meta meta; ???private Object data; ???public Response success() { ???????this.meta = new Meta(true, OK); ???????return this; ???} ???public Response success(Object data) { ???????this.meta = new Meta(true, OK); ???????this.data = data; ???????return this; ???} ???public Response failure() { ???????this.meta = new Meta(false, ERROR); ???????return this; ???} ???public Response failure(String message) { ???????this.meta = new Meta(false, message); ???????return this; ???} ???public Meta getMeta() { ???????return meta; ???} ???public Object getData() { ???????return data; ???} ???public class Meta { ???????private boolean success; ???????private String message; ???????public Meta(boolean success) { ???????????this.success = success; ???????} ???????public Meta(boolean success, String message) { ???????????this.success = success; ???????????this.message = message; ???????} ???????public boolean isSuccess() { ???????????return success; ???????} ???????public String getMessage() { ???????????return message; ???????} ???}}以上Response类包括两类通用返回值消息：ok与error，还包括两个常用的操作方法：success( )与failure( )，通过一个内部类来展现元数据结构，我们在下文中多次会使用该Response类。
- 该JSON响应结构如下：
{ ???"meta": { ???????"success": true, ???????"message": "ok" ???}, ???"data": ...}一个相对通用的JSON响应结构，其中包含两部分：元数据与返回值
原文地址：https://www.cnblogs.com/gengaixue/p/8972132.html