返回值的处理

比眉伴天荒 2023-05-30 08:52 30阅读 0赞

在开发中，经常需要给页面返回数据，那么如何将数据传给页面呢？本文给出了一种规范：

**1.自定义结果枚举信息接口**

public interface BSBaseResult { 
        String getCode();
        String getDesc();
    }

**2.编写枚举类实现上述接口**

public enum BSBaseResultEnum implements BSBaseResult { 
        SUCCESS("1000", "操作成功"),
        FAIL("1001", "操作失败");
        
        private String code;
        private String desc;
        
        BSBaseResultEnum(String code,String desc){ 
            this.code = code;
            this.desc = desc;
        }
        
        public String getCode(){  return this.code; }
        public String getDesc(){  return this.desc; }
        
    	@Override
    	public String toString() { 
    		return "ErrorCodeEnum{" + "code='" + code + '\'' + ", desc='" + desc + '\'' + '}';
    	}
    }

**3.编写返回值实体类**

@Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class ReturnData<T> implements Serializable { 
        private String code;
        private String desc;
        private T data;
    }

**4.编写返回值工具类BSResultUtil**

public class BSResultUtil { 
    	/** * 成功返回 */
    	public static <T> ReturnData<T> returnSuccess(T data, BSBaseResultEnum enum){ 
            ReturnData<T> result = new ReturnData<>();
            result.setCode(enum.getCode());
            result.setDesc(enum.getDesc());
            result.setData(data);
            return result;
        }
        
    	/** * 错误返回 */
    	public static <T> ReturnData<T> returnError(BSBaseResultEnum enum){ 
            ReturnData<T> result = new ReturnData<>();
            result.setCode(enum.getCode());
            result.setDesc(enum.getDesc());
            return result;
        }
        
    	/** * 错误返回 */
    	public static <T> ReturnData<T> returnError(String code, String desc){ 
            ReturnData<T> result = new ReturnData<>();
            result.setCode(code);
            result.setDesc(desc);
            return result;
        }
    }

**5.使用**

BSResultUtil.returnSuccess(data,BSBaseResultEnum.SUCCESS)