import lombok.Getter;
 
/**
 * @author mijiupro
 */
@Getter
public enum ResultEnum {
 
    /* 成功狀態(tài)碼 */
    SUCCESS(1, "操作成功！"),
 
    /* 錯誤狀態(tài)碼 */
    FAIL(0, "操作失??！"),
 
    /* 參數(shù)錯誤：10001-19999 */
    PARAM_IS_INVALID(10001, "參數(shù)無效"),
    PARAM_IS_BLANK(10002, "參數(shù)為空"),
    PARAM_TYPE_BIND_ERROR(10003, "參數(shù)格式錯誤"),
    PARAM_NOT_COMPLETE(10004, "參數(shù)缺失"),
 
    /* 用戶錯誤：20001-29999*/
    USER_NOT_LOGGED_IN(20001, "用戶未登錄，請先登錄"),
    USER_LOGIN_ERROR(20002, "賬號不存在或密碼錯誤"),
    USER_ACCOUNT_FORBIDDEN(20003, "賬號已被禁用"),
    USER_NOT_EXIST(20004, "用戶不存在"),
    USER_HAS_EXISTED(20005, "用戶已存在"),
 
    /* 系統(tǒng)錯誤：40001-49999 */
    FILE_MAX_SIZE_OVERFLOW(40003, "上傳尺寸過大"),
    FILE_ACCEPT_NOT_SUPPORT(40004, "上傳文件格式不支持"),
 
    /* 數(shù)據(jù)錯誤：50001-599999 */
    RESULT_DATA_NONE(50001, "數(shù)據(jù)未找到"),
    DATA_IS_WRONG(50002, "數(shù)據(jù)有誤"),
    DATA_ALREADY_EXISTED(50003, "數(shù)據(jù)已存在"),
    AUTH_CODE_ERROR(50004, "驗證碼錯誤"),
 
 
    /* 權(quán)限錯誤：70001-79999 */
    PERMISSION_UNAUTHENTICATED(70001, "此操作需要登陸系統(tǒng)！"),
 
    PERMISSION_UNAUTHORIZED(70002, "權(quán)限不足，無權(quán)操作！"),
 
    PERMISSION_EXPIRE(70003, "登錄狀態(tài)過期！"),
 
    PERMISSION_TOKEN_EXPIRED(70004, "token已過期"),
 
    PERMISSION_LIMIT(70005, "訪問次數(shù)受限制"),
 
    PERMISSION_TOKEN_INVALID(70006, "無效token"),
 
    PERMISSION_SIGNATURE_ERROR(70007, "簽名失敗");
 
    // 狀態(tài)碼
    int code;
    // 提示信息
    String message;
 
    ResultEnum(int code, String message) {
        this.code = code;
        this.message = message;
    }
 
    public int code() {
        return code;
    }
 
    public String message() {
        return message;
    }
 
    public void setCode(int code) {
        this.code = code;
    }
 
    public void setMessage(String message) {
        this.message = message;
    }
}

import com.mijiu.commom.enumerate.ResultEnum;
import lombok.Data;
 
 
/**
 * @author mijiupro
 */
 
@Data
public class Result<T> {
 
    // 操作代碼
    Integer code;
 
    // 提示信息
    String message;
 
    // 結(jié)果數(shù)據(jù)
    T data;
 
    public Result(ResultEnum resultCode) {
        this.code = resultCode.code();
        this.message = resultCode.message();
    }
 
    public Result(ResultEnum resultCode, T data) {
        this.code = resultCode.code();
        this.message = resultCode.message();
        this.data = data;
    }
    public Result(String message) {
        this.message = message;
    }
    //成功返回封裝-無數(shù)據(jù)
    public static Result<String> success() {
        return new Result<String>(ResultEnum.SUCCESS);
    }
    //成功返回封裝-帶數(shù)據(jù)
    public static <T> Result<T> success(T data) {
        return new Result<T>(ResultEnum.SUCCESS, data);
    }
    //失敗返回封裝-使用默認(rèn)提示信息
    public static Result<String> error() {
        return new Result<String>(ResultEnum.FAIL);
    }
    //失敗返回封裝-使用返回結(jié)果枚舉提示信息
    public static Result<String> error(ResultEnum resultCode) {
        return new Result<String>(resultCode);
    }
    //失敗返回封裝-使用自定義提示信息
    public static Result<String> error(String message) {
        return new Result<String>(message);
 
    }
}

import com.mijiu.common.result.Result;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
 
/**
 * @author mijiupro
 */
@RestController
@RequestMapping("/test1")
public class Test1Controller {
    @GetMapping("/hello")
    public Result<String> hello() {
        return Result.success("hello world");
    }
}

import cn.hutool.json.JSONUtil;
import com.mijiu.commom.result.Result;
import io.micrometer.common.lang.NonNullApi;
import io.micrometer.common.lang.Nullable;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;
 
/**
 * 統(tǒng)一結(jié)果封裝增強(qiáng)器
 * @author mijiupro
 */
@RestControllerAdvice(basePackages = "com.mijiu.controller")//指定要增強(qiáng)的包
@NonNullApi
public class ResultAdvice implements ResponseBodyAdvice<Object> {
 
    /**
     * 判斷是否支持對返回類型的處理
     *
     * @param returnType    方法參數(shù)的類型
     * @param converterType 轉(zhuǎn)換器的類型
     * @return 是否支持處理
     */
    @Override
    public boolean supports(MethodParameter returnType, Class converterType) {
        return true;
    }
 
    /**
     * 在寫入響應(yīng)體之前對返回結(jié)果進(jìn)行處理和封裝
     *
     * @param body                  返回結(jié)果對象
     * @param returnType            方法參數(shù)的類型
     * @param selectedContentType   響應(yīng)內(nèi)容的類型
     * @param selectedConverterType 轉(zhuǎn)換器的類型
     * @param request               HTTP 請求對象
     * @param response              HTTP 響應(yīng)對象
     * @return 處理后的返回結(jié)果
     */
    @Override
    public Object beforeBodyWrite(@Nullable Object body, MethodParameter returnType,
                                  MediaType selectedContentType, Class selectedConverterType,
                                  ServerHttpRequest request, ServerHttpResponse response) {
        //當(dāng)返回結(jié)果為字符串類型需要單獨處理
        if (body instanceof String) {
            // 如果返回結(jié)果是字符串類型，將其封裝為成功的結(jié)果對象，并轉(zhuǎn)換為 JSON 字符串
            return JSONUtil.toJsonStr(Result.success(body));
        }
 
        // 將返回結(jié)果封裝為成功的結(jié)果對象
        return Result.success(body);
    }
}