- (void)youdaoCloudTranslate:(NSString *)srcText srcLanguageType:(NSString *)srcType targetLanguage:(NSString *)targetType callBack:(void (^)(NSString *))callBack{
//    语言    代码
//    中文    zh-CHS
//    日文    ja
//    英文    EN
//    韩文    ko
//    法文    fr
//    俄文    ru
//    葡萄牙文    pt
//    西班牙文    es
//    越南文    vi
//    德文    de
//    阿拉伯文    ar
//    印尼文    id
    ///参考文档: https://ai.youdao.com/docs/doc-trans-api.s#p08
    NSString *url = @"http://openapi.youdao.com/api";
    NSString *appKey = @"xxxx";
    NSString *key = @"xxxx";
    NSString *from = srcType;
    NSString *to = targetType;
    NSString *query = srcText;
    NSString *salt = [NSDate date].string;
    NSString *str = [NSString stringWithFormat:@"%@%@%@%@",appKey,query,salt,key];
    NSString *sign = str.md5String;
    /// urlEncode 一下
    NSCharacterSet *encodeUrlSet = [NSCharacterSet URLQueryAllowedCharacterSet];
    NSString *encodeContent = [query stringByAddingPercentEncodingWithAllowedCharacters: encodeUrlSet];
    NSDictionary *parametersDict = @{
                                     @"q": encodeContent,
                                     @"appKey": appKey,
                                     @"salt": salt,
                                     @"from": from,
                                     @"to":to ,
                                     @"sign" : sign
                                     };
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    [manager POST: url parameters: parametersDict progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
//        NSLog(@"************************** %@ ",responseObject[@"translation"][0]);
        NSArray *textArray = responseObject[@"translation"];
        if (textArray.count) {
            callBack(textArray.firstObject);
        }
      } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
           callBack(@"");
    }];
}

///MARK:- 文本翻译 中文转英文
- (void)youdaoCloudTranslateChineseToEnglish:(NSString *)srcChineseText
                                    callBack:(void(^)(NSString *targetEnglishStr))callBack{
    [self youdaoCloudTranslate: srcChineseText srcLanguageType: @"zh-CHS" targetLanguage:@"EN" callBack: callBack];
}