ApiResult

kotlin
package com.example.demokt.core.entity

import java.time.LocalDateTime
import java.time.format.DateTimeFormatter

data class ApiResult<T>(
    val code: Int,
    val message: String,
    val data: T?,
    val timestamp: String
) {
    companion object {
        // 创建成功的响应
        fun <T> success(data: T?): ApiResult<T> {
            return ApiResult(ResultCode.SUCCESS.code, ResultCode.SUCCESS.message, data, getCurrentTimestamp())
        }

        // 创建成功的响应，并自定义消息
        fun <T> success(message: String, data: T?): ApiResult<T> {
            return ApiResult(ResultCode.SUCCESS.code, message, data, getCurrentTimestamp())
        }

        // 创建自定义状态码的响应
        fun <T> of(resultCode: ResultCode, data: T?): ApiResult<T> {
            return ApiResult(resultCode.code, resultCode.message, data, getCurrentTimestamp())
        }

        // 创建失败的响应
        fun <T> error(code: Int, message: String): ApiResult<T> {
            return ApiResult(code, message, null, getCurrentTimestamp())
        }

        // 创建失败的响应，并包含数据
        fun <T> error(code: Int, message: String, data: T?): ApiResult<T> {
            return ApiResult(code, message, data, getCurrentTimestamp())
        }

        // 获取当前时间戳
        private fun getCurrentTimestamp(): String {
            val now = LocalDateTime.now()
            val formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")
            return now.format(formatter)
        }
    }
}

ResultCode

kotlin
package com.example.demokt.core.entity

enum class ResultCode(val code: Int, val message: String) {
    SUCCESS(200, "Success"),
    ADD_USER_SUCCESS(1001, "添加用户成功"),
    USER_NOT_EXISTS(1002, "用户不存在"),
    USER_ALREADY_EXISTS(1003, "用户已存在"),
    INVALID_CREDENTIALS(1004, "无效的凭证"),
    LOGIN_SUCCESS(1005, "登录成功"),
    LOGIN_FAILED(1006, "登录失败"),
    LOGOUT_SUCCESS(1007, "登出成功"),
    PERMISSION_DENIED(1008, "权限不足"),
    RESOURCE_NOT_FOUND(1009, "资源未找到"),
    RESOURCE_ALREADY_EXISTS(1010, "资源已存在"),
    INVALID_PARAMETERS(1011, "无效的参数"),
    OPERATION_SUCCESS(1012, "操作成功"),
    OPERATION_FAILED(1013, "操作失败"),
    // 用户操作
    USER_ALREADY_BLOCKED(1014, "用户已被封禁"),
    USER_ALREADY_VERIFIED(1015, "用户已验证"),
    USER_VERIFICATION_FAILED(1016, "用户验证失败"),

    SERVER_ERROR(500, "服务器错误"),
    UNKNOWN_ERROR(501, "未知错误"),

    // 注册相关
    REGISTER_SUCCESS(2001, "注册成功"),
    REGISTER_FAILED(2002, "注册失败"),
    EMAIL_ALREADY_EXISTS(2003, "邮箱已存在"),
    USERNAME_ALREADY_EXISTS(2004, "用户名已存在"),
    // 登录/注册
    INVALID_VERIFICATION_CODE(2005, "验证码错误"),
    REGISTRATION_CODE_EXPIRED(2006, "注册码已过期"),
    INVALID_LOGIN_ATTEMPTS(1017, "登录尝试过多，请稍后再试"),

    // 支付相关
    PAYMENT_SUCCESS(3001, "支付成功"),
    PAYMENT_FAILED(3002, "支付失败"),
    INSUFFICIENT_FUNDS(3003, "余额不足"),
    PAYMENT_CANCELED(3004, "支付已取消"),
    // 支付
    PAYMENT_AMOUNT_EXCEEDS_LIMIT(3005, "支付金额超出限制"),
    PAYMENT_METHOD_NOT_SUPPORTED(3006, "不支持的支付方式"),
    PAYMENT_AUTHENTICATION_REQUIRED(3007, "需要支付认证"),

    // 数据库相关
    DATABASE_CONNECTION_SUCCESS(4001, "数据库连接成功"),
    DATABASE_CONNECTION_FAILED(4002, "数据库连接失败"),
    DATABASE_OPERATION_SUCCESS(4003, "数据库操作成功"),
    DATABASE_OPERATION_FAILED(4004, "数据库操作失败"),
    // 数据库操作
    DATABASE_QUERY_FAILED(4005, "数据库查询失败"),
    DATABASE_UPDATE_FAILED(4006, "数据库更新失败"),
    DATABASE_DELETE_FAILED(4007, "数据库删除失败"),


    // 超时相关
    REQUEST_TIMEOUT(5001, "请求超时"),
    SESSION_TIMEOUT(5002, "会话超时"),
    // 超时
    API_TIMEOUT(5003, "API调用超时"),
    IMAGE_UPLOAD_TIMEOUT(5004, "图片上传超时"),

    // 限流相关
    RATE_LIMIT_EXCEEDED(6001, "请求过于频繁，请稍后再试"),
    // 限流
    RATE_LIMIT_EXCEEDED_PER_USER(6002, "用户请求过于频繁，请稍后再试"),
    RATE_LIMIT_EXCEEDED_PER_IP(6003, "IP请求过于频繁，请稍后再试"),

    // 其他
    SERVICE_UNAVAILABLE(7001, "服务不可用"),
    GATEWAY_TIMEOUT(7002, "网关超时"),
    // 其他
    INTERNAL_SERVER_ERROR(7003, "内部服务器错误"),
    CONFIGURATION_ERROR(7004, "配置错误"),
    DEPENDENCY_SERVICE_UNAVAILABLE(7005, "依赖服务不可用"),

    // 文件操作
    FILE_NOT_FOUND(8001, "文件未找到"),
    FILE_UPLOAD_FAILED(8002, "文件上传失败"),
    FILE_DOWNLOAD_FAILED(8003, "文件下载失败"),


    // 网络问题
    CONNECTION_TIMEOUT(9001, "连接超时"),
    REQUEST_FAILED(9002, "请求失败"),
    HOST_UNAVAILABLE(9003, "主机不可用"),

    // 安全问题
    SECURITY_VIOLATION(10001, "安全违规"),
    ENCRYPTION_FAILED(10002, "加密失败"),
    DECRYPTION_FAILED(10003, "解密失败");


    companion object {
        fun fromCode(code: Int): ResultCode {
            return values().find { it.code == code } ?: UNKNOWN_ERROR
        }
    }
}