如何自定义 hapi.js 中的验证错误响应?

How can I customize the validation error response in hapi.js?

当使用 config.validate option on a route 并且请求因验证而失败时,hapi returns 会出现如下错误:

{
    "statusCode": 400,
    "error": "Bad Request",
    "message": "child \"weight\" fails because [\"weight\" is required]",
    "validation": {
        "source": "payload",
        "keys": [
            "weight"
        ]
    }
}

有没有办法发送不同格式的验证错误?

自定义输出有两种方式:

  1. config.validate中使用failAction属性:

    config: {
        validate: {
            params: {
                name: Joi.string().min(3).max(10)
            },
            failAction: function (request, reply, source, error) {
    
                error.output.payload.message = 'custom';
                return reply(error).code(400);
            }
        }
    }
    
  2. 使用 onPreResponse 扩展点:

    server.ext('onPreResponse', function (request, reply) {
    
        var response = request.response;
        if (response.isBoom && response.data.name === 'ValidationError') {
            response.output.payload.message = 'custom';
        }
    
        return reply.continue();
    });
    

有关详细信息,请参阅 API documentation