ios - AFNetworking队列与pdf，png，mp4文件

Question

我有一台服务器，并且得到了响应:

 {"products": [
    {
      "product_id": "1170",
      "name": "zzzz®",
      "sort_order": 0,
      "brand": "zzzas",
      "product_category_id": "1090",
      "location_ids": [
        "1078"
      ],
      "icon_url": "http://zzzzz.com/media/2502/zzzz.png",
      "icon_date": "Wed, 07 Nov 2012 14:03:47 GMT",
      "thumbnail_url": "http://zzzz.com/media/2591/zzdfs.png",
      "thumbnail_date": "Wed, 07 Nov 2012 14:04:02 GMT"
    },
    {
      "product_id": "1126",
      "name": "ddddd®",
      "sort_order": 1,
      "brand": "dddsas",
      "product_category_id": "1110",
      "location_ids": [
        "1095"
      ],
      "icon_url": "http://zzzzz.com/media/2507/ddddd.png",
      "icon_date": "Wed, 07 Nov 2012 14:03:48 GMT",
      "thumbnail_url": "http://zzzzz.com/media/2596/sssds.png",
      "thumbnail_date": "Wed, 07 Nov 2012 14:04:05 GMT"
    }
]}

我正在使用该代码来解析JSON

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"link"]]; AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {

NSDictionary *jsonDict = (NSDictionary *) JSON;
   NSArray *products = [jsonDict objectForKey:@"products"];
  [products enumerateObjectsUsingBlock:^(id obj,NSUInteger idx, BOOL *stop){
    NSString *productIconUrl = [obj objectForKey:@"icon_url"];
}];
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) { NSLog(@"Request Failure Because %@",[error userInfo]); }];

[operation start];

我如何获取所有icon_urls并将它们分配在AFnetworking队列中以进行序列化下载。有些文件在响应中也是pdf或mp4文件，因此我希望将所有文件打包成一个数组作为请求，并一一下载。

我已经搜索了AFClient，但是可以找到任何源代码或示例用法。

Answer 1

您应该在项目中遵循MVC架构。根据您的json格式，我对您的建议是。
因此，首先您必须创建一个型号名称“Product”。 “产品”应具有json数据iconUrl，productId，productName，thumnailURL之类的属性。
因此，请查看下面的解析代码，然后首先获取产品列表。

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL
URLWithString:@"link"]];  AFJSONRequestOperation *operation =
[AFJSONRequestOperation JSONRequestOperationWithRequest:request
success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON)
{

    NSDictionary *jsonDict = (NSDictionary *) JSON;    
    NSArray *products = [jsonDict objectForKey:@"products"];

    NSMutableArray *productsList = [[NSMutableArray alloc] init];
    Product *product = [[Product alloc] init];

    [products enumerateObjectsUsingBlock:^(id obj,NSUInteger idx, BOOL *stop){
        product.icon_url= [obj objectForKey:@"icon_url"];
        [productsList addObject:product];
    }]; 

} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON { 
    NSLog(@"Request Failure Because %@",[error userInfo]); 
}];

[operation start];

现在您有了完整的产品列表，然后使用以下代码迭代列表并下载图像数据

NSData *imageData = [NSData dataWithContentsOfURL:
                            [NSURL URLWithString:product.iconUrl]];