AlamofireCodable
通过Alamofire请求数据,将数据一步到位转为基于遵守Codable协议的模型!
使用原生的Codable协议进行JSON转模型!
例如有下面这样的JSON:
{
"code": 0,
"list": [
{
"topicDesc": "错过线下行前说明会？这里有一份超完整的澳洲行前攻略给你。",
"createTime": null,
"topicImageUrl": "http:\\/\\/cdn.timez1.com\\/20180608\\/18626cd2106344078969afd77acf3572.jpg",
"id": 12,
"topicStatus": 1,
"upTime": "2018-06-13 14:46:06",
"topicOrder": 21,
"topicTittle": "澳洲行前"
},
{
"topicDesc": "错过线下行前说明会？这里有一份超完整的英国行前攻略给你。",
"createTime": null,
"topicImageUrl": "http:\\/\\/cdn.timez1.com\\/20180608\\/d27a7923a24d4cd6878fe08fa338be45.jpg",
"id": 10,
"topicStatus": 1,
"upTime": "2018-06-13 14:46:17",
"topicOrder": 20,
"topicTittle": "英国行前"
},
{
"topicDesc": "每月准时更新！留学时区为你搜集6月份留学活动资讯，想参加活动就来吧~",
"createTime": null,
"topicImageUrl": "http:\\/\\/cdn.timez1.com\\/20180613\\/ad2983334ede4b18a0ac39e2af2df7de.jpg",
"id": 13,
"topicStatus": 1,
"upTime": "2018-06-13 14:46:34",
"topicOrder": 19,
"topicTittle": "活动推荐"
},
{
"topicDesc": "英国留学 - 5分钟语音微讲座",
"createTime": null,
"topicImageUrl": "http:\\/\\/cdn.timez1.com\\/20180507\\/de7598df27a048949d7108f084156f2e.jpg",
"id": 8,
"topicStatus": 1,
"upTime": "2018-05-29 15:42:44",
"topicOrder": 17,
"topicTittle": "英国语音"
},
{
"topicDesc": "美国留学 - 5分钟语音微讲座",
"createTime": null,
"topicImageUrl": "http:\\/\\/cdn.timez1.com\\/20180507\\/c052c8d666d54533aa823cf7991f83b6.jpg",
"id": 7,
"topicStatus": 1,
"upTime": "2018-05-29 15:42:37",
"topicOrder": 16,
"topicTittle": "美国语音"
},
{
"topicDesc": "澳大利亚留学 - 5分钟语音微讲座",
"createTime": null,
"topicImageUrl": "http:\\/\\/cdn.timez1.com\\/20180507\\/67189c3eb55b4ead98952c66722a0515.jpg",
"id": 6,
"topicStatus": 1,
"upTime": "2018-06-25 10:48:41",
"topicOrder": 15,
"topicTittle": "澳洲语音"
}
]
}
可以通过一些网站获取其模型,我们让每一个自定义的模型遵守Codable协议,如下:
struct Item: Codable {
var topicOrder: Int?
var id: Int?
var topicDesc: String?
var topicTittle: String?
var upTime: String?
var topicImageUrl: String?
var topicStatus: Int?
}
struct Topics: Codable {
var list: [Item]?
var code: Int?
}
我们就可以通过Alamofire和我写一个分类方法responseCodable获取其模型了:
// 获取整个模型
Alamofire.request("http://sun.topray-media.cn/tz_inf/api/topics", method: .post).responseCodable { (response: DataResponse<Topics>) in
guard let value = response.value else { return }
print(value)
}
当然我们也可以通过其keyPath获取其更底层的模型:
// keyPath目标的请求Model
Alamofire.request("http://sun.topray-media.cn/tz_inf/api/topics", method: .post).responseCodable(queue: nil, keyPath: "list") { (response: DataResponse<[Item]>) in
guard let list = response.value else { return }
print(list)
}
AlamofireCodable的优势
- 完全使用系统协议,不依赖于其他JSON转模型的框架,就算不使用Alamofire,可以使用原生的请求一步到位获取模型.
- 不用区分响应的是Object或者是[Object],上面的例子已经可以看出.
- keyPath获取深层次的keyPath下的模型,可以在requestModel2的方法中看具体实现,而ObjectMapper只能获取一层下面的模型.
- 定义的模型简单,模型类或者结构体只需要遵守Codable协议即可.
- 涉及模型中定义自定义数据的,可以在Demo中Model2进行详细了解,这里只说重点,实现Decodable协议的具体方法!
pod使用注意
目前仅推到我自己的私有库,具体如何使用,可以参看该页面的使用说明.
至于原因,是有位大哥已经使用了AlamofireCodable在Cocoapods占了坑,那位大哥的写法借鉴了AlamofireObjectMapper.我没有办法推到Cocoapods上面去.
文章参考
Encoding and Decoding Custom Types
