先構建一個格式確定下來的Result類
public class Result<T> {
private Integer code;
private String msg;
private T data;
public Result() {
super();
}
public Result(Integer code, String msg, T data) {
this.code = code;
this.msg = msg;
this.data = data;
}
public Integer getCode() {
return code;
}
public void setCode(Integer code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public T getData() {
return data;
}
public void setData(T data) {
this.data = data;
}
@Override
public String toString() {
return "Result{" +
"code=" + code +
", msg='" + msg + '\'' +
", data=" + data +
'}';
}
}
然後構建一個常用的枚舉類,內容可以根據項目自定義
public enum ResultEnum {
//這裏是可以自己定義的,方便與前端交互即可
UNKNOWN_ERROR(-1,"未知錯誤"),
SUCCESS(10000,"成功"),
USER_NOT_EXIST(1,"用戶不存在"),
USER_IS_EXISTS(2,"用戶已存在"),
DATA_IS_NULL(3,"數據爲空"),
;
private Integer code;
private String msg;
ResultEnum(Integer code, String msg) {
this.code = code;
this.msg = msg;
}
public Integer getCode() {
return code;
}
public String getMsg() {
return msg;
}
}
然後就是寫一個返回的工具類ResultUtil
public class ResultUtil {
/**成功且帶數據**/
public static Result success(Object object){
Result result = new Result();
result.setCode(ResultEnum.SUCCESS.getCode());
result.setMsg(ResultEnum.SUCCESS.getMsg());
result.setData(object);
return result;
}
/**成功但不帶數據**/
public static Result success(){
return success(null);
}
/**失敗**/
public static Result error(Integer code,String msg){
Result result = new Result();
result.setCode(code);
result.setMsg(msg);
return result;
}
}
最後就是應用了,在Controller裏邊調用ResultUtil就可以了
@GetMapping("/test")
@ResponseBody
public Result test() throws Exception{
String str = "程序猿最帥";
return ResultUtil.success(str);
}
然後利用Postman測試我們的返回結果
程序猿最帥就這樣輸出成功了