後端接口統一返回響應對象

在項目開發中，通常返回給前端的都會是一個統一的返回響應對象，所以後端須要封裝一個泛型類來做爲響應對象，這樣作的好處是先後端能統一接口返回，能夠作規範的響應處理。

ServerResponse類

@JsonSerialize(include =  JsonSerialize.Inclusion.NON_NULL)
// 保證序列化json的時候,若是是null的對象,key也會消失
public class ServerResponse<T> implements Serializable {
    private int status;
    private String msg;
    private T data;
 
    private ServerResponse(int status){
        this.status = status;
    }
    
    private ServerResponse(int status, T data){
        this.status = status;
        this.data = data;
    }
 
    private ServerResponse(int status, String msg, T data) {
        this.status = status;
        this.msg = msg;
        this.data = data;
    }
 
    private ServerResponse(int status, String msg) {
        this.status = status;
        this.msg = msg;
    }
　　
    @JsonIgnore
    // 使之不在json序列化結果當中
    public boolean isSuccess() {
        return this.status == ResponseCode.SUCCESS.getCode();
    }
 
    public int getStatus() {
        return status;
    }
    public T getData() {
        return data;
    }
    public String getMsg() {
        return msg;
    }
 
    public static <T> ServerResponse<T> createBySuccess() {
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode());
    }
 
    public static <T> ServerResponse<T> createBySuccessMessage(String msg) {
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(), msg);
    }
 
    public static <T> ServerResponse<T> createBySuccess(T data) {
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(), data);
    }
 
    public static <T> ServerResponse<T> createBySuccess(String msg, T data) {
        return new ServerResponse<T>(ResponseCode.SUCCESS.getCode(), msg,data);
    }
    public static <T> ServerResponse<T> createByError() {
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(), ResponseCode.ERROR.getDesc());
    }
 
    public static <T> ServerResponse<T> createByErrorMessage(String errorMessage) {
        return new ServerResponse<T>(ResponseCode.ERROR.getCode(), errorMessage);
    }
 
    public static <T> ServerResponse<T> createByErrorCodeMessage(int errorCode, String errorMessage) {
        return new ServerResponse<T>(errorCode, errorMessage);
    }
}

ResponseCode枚舉類

public enum ResponseCode {
    SUCCESS(0, "SUCCESS"),
    ERROR(1, "ERROR"),
    NEED_LOGIN(10, "NEED_LOGIN"),
    ILLEGAL_ARGUMENT(2, "ILLEGAL_ARGUMENT");
 
    private final int code;
    private final String desc;
 
    ResponseCode(int code,String desc) {
        this.code = code;
        this.desc = desc;
    }
 
    public int getCode() {
        return code;
    }
    
    public String getDesc() {
        return desc;
    }
}

沒有什麼說的，直接貼代碼就完事了，實際項目能夠根據實際狀況進行微調。

 

"若是隻有這一次，我想我是不會放手的。"