Java中響應結果工具類,可自定義響應碼，內容，響應消息

創建響應狀態碼和說明枚舉類

/**
 * 響應狀態碼和說明
 */
public enum CodeEnum {
    SUCCESS(0, "成功！"),
    FAIL(1, "失敗，未知錯誤！"),;
​
    /**
     * 響應狀態碼
     */
    private final int code;
​
    /**
     * 響應提示
     */
    private final String msg;
​
    CodeEnum(int code, String msg) {
        this.code = code;
        this.msg = msg;
   }
​
    public int getCode() {
        return code;
   }
​
    public String getMsg() {
        return msg;
   }
}

基本響應封裝

/**
 * 基本響應封裝
 */
public class BaseResponse {
​
 /**
 * 響應碼
 */
 private int code;
​
 /**
 * 響應消息
 */
 private String msg;
​
 protected BaseResponse() {}
​
 protected BaseResponse(CodeEnum code) {
    this.code = code.getCode();
    this.msg = code.getMsg();
   }
​
    public static BaseResponse out(CodeEnum code) {
    return new BaseResponse(code);
   }
​
 public int getCode() {
  return code;
 }
​
 public void setCode(int code) {
  this.code = code;
 }
​
 public String getMsg() {
  return msg;
 }
​
 public void setMsg(String msg) {
  this.msg = msg;
 }
}

響應數據結構封裝

/**
 * 響應數據結構封裝
 */
public class ResponseData<T> extends BaseResponse {
​
 private T data;
​
 private ResponseData() {}
​
 private ResponseData(CodeEnum code, T data) {
  super(code);
  this.data = data;
 }
 
 public static <T> ResponseData<T> out(CodeEnum code, T data) {
  return new ResponseData<T>(code, data);
 }
​
 public T getData() {
  return data;
 }
​
 public void setData(T data) {
  this.data = data;
 }
​
}
​

測試

public static void main(String[] args) {
    BaseResponse out = BaseResponse.out(CodeEnum.SUCCESS);
    System.out.println("基本響應封裝:\n" + JSON.toJSONString(out));
    List<String> list = new LinkedList<>();
    list.add(UUID.randomUUID().toString());
    ResponseData<List<String>> data = ResponseData.out(CodeEnum.FAIL, list);
    System.out.println("響應數據結構封裝:\n" + JSON.toJSONString(data));
}

打印結果： 基本響應封裝: {"code":0,"msg":"成功！"} 響應數據結構封裝: {"code":1,"data":["aac1d70a-1eaf-4d6a-8383-102ced0bdf29"],"msg":"失敗，未知錯誤！"}