koa3-demo/src/core/exceptions/ValidationException.js

/**
 * 验证异常类
 * 处理数据验证失败的异常
 */

import BaseException from './BaseException.js'

export class ValidationException extends BaseException {
    constructor(message = '数据验证失败', details = null) {
        super(message, 400, 'VALIDATION_ERROR', details)
    }

    /**
     * 创建字段验证失败异常
     */
    static field(field, message) {
        return new ValidationException(`字段验证失败: ${field}`, {
            field,
            message
        })
    }

    /**
     * 创建多字段验证失败异常
     */
    static fields(errors) {
        return new ValidationException('数据验证失败', errors)
    }

    /**
     * 创建必需字段异常
     */
    static required(fields) {
        const fieldList = Array.isArray(fields) ? fields.join(', ') : fields
        return new ValidationException(`缺少必需字段: ${fieldList}`, {
            missing: fields
        })
    }

    /**
     * 创建格式错误异常
     */
    static format(field, expectedFormat) {
        return new ValidationException(`字段格式错误: ${field}`, {
            field,
            expectedFormat
        })
    }
}

export default ValidationException