手動控制拋出自定義異常demo

返回值：

如圖，後臺Service層返回拋出自定義異常，Dao層異常類似。

Service：

public Map calculateScore(String code) {
    Map map = new HashMap();
    Integer version = svConfigurationDao.getNewestVersion();
    List<SvConfiguration> list = svConfigurationRepository.findByVersion(version);
    if (list.size() <= 0) {
        throw new ServiceException(ResultEnum.NO_CONFIG);
    }
    ResultData resultData = factorScore.getFactorScore(code);
    if (resultData.getTotalCount() > 0) {
        //do something;
    } else {
        throw new ServiceException(ResultEnum.NO_STOCK);
    }
}

ResultEnum:

public enum ResultEnum {
   UNKNOW_ERROR(-1, "系統內部錯誤"),
   SUCCESS(0, "成功"),
   NO_CONFIG(10000, "當前版本沒有配置信息"),
   NO_STOCK(10001,"查詢不到股票信息");

   private Integer code;

   private String msg;

   ResultEnum(Integer code, String msg){
      this.code = code;
      this.msg = msg;
   }

   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;
   }

}

在Controller層返回拋出自定義異常，

Controller：

@GetMapping(value = "/currentConfig")
public Result getSvCongifurationList(){
   Map map = svService.getCurrentConfig();
   if(map != null && map.size() > 0){
      return ResultUtil.success(map);
   }else{
      return ResultUtil.error(ResultEnum.NO_CONFIG);
   }
}

ResultUtil：

public class ResultUtil {

   public static Result success(Object object){
      Result result = new Result();
      result.setData(object);

      return result;
   }

   public static Result success(){
      Result result = new Result();
      return result;
   }

   public static Result error(int code, String msg){
      Result result = new Result(code, msg);
      return result;
   }

   public static Result error(ResultEnum re){
      Result result = new Result(re.getCode(), re.getMsg());
      return result;
   }
}

Result ：

public class Result {
   private int status;

   private String message;

   private Object data;

   public Result(int status, String message) {
      this.status = status;
      this.message = message;
   }

   public Result() {
      this.status = 0;
      this.message = "成功";
   }

   /*
   public boolean isSucc() {
      return this.status.equals("0");
   }

   */
   public int getStatus() {
      return status;
   }

   public void setStatus(int status) {
      this.status = status;
   }

   public String getMessage() {
      return message;
   }

   public void setMessage(String message) {
      this.message = message;
   }

   public Object getData() {
      return data;
   }

   public void setData(Object data) {
      this.data = data;
   }

   public String toString() {
//    return JSONObject.toJSONString(this);

      ObjectMapper mapper = new ObjectMapper();
      String jsonStr = "";
      try{
         jsonStr = mapper.writeValueAsString(this);
      }catch(JsonProcessingException e){
         System.out.println(e.toString());
      }
      return jsonStr;
   }
}