微服务中统一返回状态码

1.封装统一返回对象

@Data
public class BaseResponse<T> {

	private Integer rtnCode;
	private String msg;
	private T data;

	public BaseResponse() {

	}

	public BaseResponse(Integer rtnCode, String msg, T data) {
		super();
		this.rtnCode = rtnCode;
		this.msg = msg;
		this.data = data;
	}

}

2.常量

public interface Constants {
	// 响应请求成功
	String HTTP_RES_CODE_200_VALUE = "success";
	// 系统错误
	String HTTP_RES_CODE_500_VALUE = "fial";
	// 响应请求成功code
	Integer HTTP_RES_CODE_200 = 200;
	// 系统错误
	Integer HTTP_RES_CODE_500 = 500;
}

3.封装业务类需要继承的父类

@Data
@Component
public class BaseApiService<T> {

	public BaseResponse<T> setResultError(Integer code, String msg) {
		return setResult(code, msg, null);
	}

	// 返回错误，可以传msg
	public BaseResponse<T> setResultError(String msg) {
		return setResult(Constants.HTTP_RES_CODE_500, msg, null);
	}

	// 返回成功，可以传data值
	public BaseResponse<T> setResultSuccess(Object data) {
		return setResult(Constants.HTTP_RES_CODE_200, Constants.HTTP_RES_CODE_200_VALUE, data);
	}

	// 返回成功，沒有data值
	public BaseResponse<T> setResultSuccess() {
		return setResult(Constants.HTTP_RES_CODE_200, Constants.HTTP_RES_CODE_200_VALUE, null);
	}

	// 返回成功，沒有data值
	public BaseResponse<T> setResultSuccess(String msg) {
		return setResult(Constants.HTTP_RES_CODE_200, msg, null);
	}

	// 通用封装
	public BaseResponse<T> setResult(Integer code, String msg, Object data) {
		return new BaseResponse(code, msg, data);
	}
	
	// 调用数据库层判断
	public Boolean toDaoResult(int result) {
		return result > 0 ? true : false;
	}
}

4.具体用法

@RestController
public class WeiXinAppServiceImpl extends BaseApiService<AppEntity> implements WeiXinAppService {
	//具体用法（测试)
	public BaseResponse<AppEntity> getApp() {
		return setResultError("系统错误!");
	}

}