AFNetworking 使用总结 （用法+JSON解析）

 NSString *URLTmp = @"http://www.coneboy.com";
 NSString *URLTmp1 = [URLTmp stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];  //转码成UTF-8  否则可能会出现错误
        URLTmp = URLTmp1;
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString: URLTmp]];
    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"Success: %@", operation.responseString);
        
        NSString *requestTmp = [NSString stringWithString:operation.responseString];
        NSData *resData = [[NSData alloc] initWithData:[requestTmp dataUsingEncoding:NSUTF8StringEncoding]];
//系统自带JSON解析
        NSDictionary *resultDic = [NSJSONSerialization JSONObjectWithData:resData options:NSJSONReadingMutableLeaves error:nil];

         } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
          NSLog(@"Failure: %@", error);
        [SVProgressHUD dismissWithError:@"提交失败，请重试"];
    }];
        [operation start];
   }

[imageView setImageWithURL:[NSURL URLWithString:URL]];