使用最新版本的AFN 進行HTTP的網路請求偶爾遇到的問題, 有時候自己就解決了, 也不知道原因, 後來 stackOverFlow上看到一個答案試了一下 可以解決 不過他的都是用C 寫的, 簡單改了一下 還是使用AFN

程式碼

/* 主要就是給 請求的過程新增一個安全政策的物件 並使用 */
+ (void)POSTWithURL:(NSString *)url withBody:(id)body withBodyStyle:(bodyStyle)bodyStyle withHttpHead:(NSDictionary *)head responseStyle:(responseStyle)style withSuccess:(void
 
 (^)(id))success withFail:(void (^)(NSError *))fail {

    AFSecurityPolicy *securityPolicy = [[AFSecurityPolicy alloc] init];
    [securityPolicy setAllowInvalidCertificates:YES];

    NSString *url_string = [NSString stringWithString:url];
    /* 建立http請求管理者 */
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    /* 處理body型別 */
 

    switch (bodyStyle) {
        case stringStyle: {
            break;
        }
        case JSONStyle: {
            break;
        }
    }

    /* 新增請求頭 */
    if (head) {
        for (NSString *key in head) {
            [manager.requestSerializer setValue:head[key] forHTTPHeaderField:key];
        }
    }
    /* 判斷返回資料型別 */
 

    switch (style) {
        case DATA: {
            manager.responseSerializer = [AFHTTPResponseSerializer serializer];
            break;
        }
        case JSON: {
            manager.responseSerializer = [AFJSONResponseSerializer serializer];
            break;
        }
        case XML: {
            manager.responseSerializer = [AFXMLParserResponseSerializer serializer];
            break;
        }

        default:
            break;
    }
    /* 設定請求接受的資料型別 */
    [manager setSecurityPolicy:securityPolicy];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];

//    [manager.responseSerializer setAcceptableContentTypes:[NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript",@"text/html",@"text/plain", nil]];
    //本地快取設定，沙盒路徑設定
    NSArray *path = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
    NSString *pathString = path.lastObject;
    NSString *pathLast =[NSString stringWithFormat:@"/Caches/com.hackemist.post.default/%lu.text", (unsigned long)[url_string hash]];

    //建立字串檔案儲存路徑
    NSString *PathName =[pathString stringByAppendingString:pathLast];

    //第一次進入判斷有沒有資料夾，如果沒有就建立一個
    NSString * textPath = [pathString stringByAppendingFormat:@"/Caches/com.hackemist.post.default"];
    if (![[NSFileManager defaultManager]fileExistsAtPath:textPath]) {

        [[NSFileManager defaultManager]createDirectoryAtPath:textPath withIntermediateDirectories:YES attributes:nil error:nil];
    }
    //設BOOL值 判斷解析後的資料是陣列還是字典
    __block  BOOL isClass = NO;


    /* POST請求 */
    [manager POST:url parameters:body constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {

    } progress:^(NSProgress * _Nonnull uploadProgress) {

    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        if ([responseObject isKindOfClass:[NSArray class]]) {
            isClass = YES;
        } else{
            isClass = NO;
        }
        [responseObject writeToFile:PathName atomically:YES];
        success(responseObject);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSString * cachePath = PathName;
        if ([[NSFileManager defaultManager] fileExistsAtPath:cachePath]) {
            //從本地讀快取檔案
            id responseObject = nil;
            if (isClass) {
                responseObject = [NSMutableArray arrayWithContentsOfFile:cachePath];
            } else {
                responseObject = [NSMutableDictionary dictionaryWithContentsOfFile:cachePath];
            }
            success(responseObject);
        }

    }];
}

本篇和之前寫過的關於AFN封裝的部落格掛鉤 如果不懂可以參考一下

    /* 設定安全政策物件 */
     AFSecurityPolicy *securityPolicy = [[AFSecurityPolicy alloc] init];
    [securityPolicy setAllowInvalidCertificates:YES];
    /* 使用 */
    [manager setSecurityPolicy:securityPolicy];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];