更新Alamofire后，responseString里的中文乱码。

Question

这是抓包的json:

{
    "buyer": {
        "tmallMemberLevel": 0
    },
    "consumerProtection": {
        "items": [{
            "desc": "?y?·±￡??￡??ùò??a??",
            "title": "?ùò??a??",
            "type": 0
        }, {
            "desc": "3?D?ó??§?úí?????3?oó￡??íêü???ùí???μ???",
            "title": "???ùí???",
            "type": 0
        }, {
            "desc": "?ú×??àó|ì??tê±￡???·????ééê?? ?°??ìì?Tàíóéí??????±",
            "title": "??ìì?Tàíóéí???",
            "type": 0
        }],
        "params": "204:3838,2979,2973",
        "passValue": "none",
        "serviceProtection": {
            "basicService": {
                "name": "?ù′?±￡??",
                "services": [{
                    "desc": ["?y?·±￡??￡??ùò??a??"],
                    "icon": "//img.alicdn.com/tfs/TB1_YjSjeL2gK0jSZPhXXahvXXa-54-54.png",
                    "name": "?ùò??a??"
                }, {

使用 Alamofire 5.0 时，自动对 responseString 的乱码进行了处理：

{"buyer":{"tmallMemberLevel":0},"consumerProtection":{"items":[{"desc":"正品保障，假一赔四","title":"假一赔四","type":0},{"desc":"诚信用户在退货寄出后，享受极速退款到账","title":"极速退款","type":0},{"desc":"满足相应条件时，消费者可申请 “七天无理由退换货”","title":"七天无理由退换",

更新到 Alamofire 5.3，responseString：

{"buyer":{"tmallMemberLevel":0},"consumerProtection":{"items":[{"desc":"?y?·±￡??￡??ùò??a??","title":"?ùò??a??","type":0},{"desc":"3?D?ó??§?úí?????3?oó￡??íêü???ùí???μ???","title":"???ùí???","type":0},{"desc":"?ú×??àó|ì??tê±￡???·????ééê?? ?°??ìì?Tàíóéí??????±","title":"??ìì?Tàíóéí???"

如何在不回退的情况下快速处理这个问题？

Answer 1

指定 responseString 的 encoding 为 GBK 编码，系统没有提供，可以自己加一个:

extension String.Encoding {
    
    public static var GB_18030_2000: String.Encoding {
        let cfEncoding = CFStringEncodings.GB_18030_2000
        let resEncoding = CFStringConvertEncodingToNSStringEncoding(CFStringEncoding(cfEncoding.rawValue))
        return String.Encoding(rawValue: resEncoding)
    }
    
}