PDF與AFNetworking 2.0下載

我正在做一個簡單的請求，以下載PDF文件，然後將其寫入文件路徑。一些PDF正被引導到失敗塊。我收到的錯誤代碼是200，錯誤描述是「傳輸關閉，剩餘2231939字節要讀取」。以下是代碼片段。PDF與AFNetworking 2.0下載

NSURLRequest *request = [NSURLRequest requestWithURL:url 
              cachePolicy:nil 
             timeoutInterval:120]; 

    AFHTTPRequestOperation *downloadRequest = [[AFHTTPRequestOperation alloc] initWithRequest:request]; 

    [downloadRequest setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) { 
     if (operation.response.statusCode != 200) { 
      NSLog(@"Error code(S): %d",[operation.response statusCode]); 
     }else{ 
      NSData *data = [[NSData alloc] initWithData:responseObject]; 

      [data writeToFile:filePath atomically:YES]; 
      NSLog(@"successful download to %@", filePath); 

      [data release]; 
     }    
     [self fetchComplete:operation type:type]; 

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) { 
     NSLog(@"error code: %d",[operation.response statusCode]); 
     NSLog(@"error discreption: %@",[error localizedDescription]); 
     [self fetchFailed:operation]; 
    }];

來源

2015-02-23 dammika

如果只有部分文件使這個問題，可能您的服務器可以重置連接？有沒有關於錯誤描述的其他信息？ – kocakmstf 2015-02-25 11:33:02

檢查此問題http://stackoverflow.com/questions/1759956/curl-error-18-transfer-closed-with-outstanding-read-data-remaining – Mateusz 2015-02-25 12:14:49

請試試這個例子。希望這個幫助！

//第一步：創建NSURL，下載文件的完整路徑 //例如試試這個：NSString * fileUrl = @「https://pbs.twimg.com/profile_images/2331579964/jrqzn4q29vwy4mors75s_400x400.png」; //並與我們的URL創建的NSURLRequest對象

NSURL *URL = [NSURL URLWithString:fileUrl]; 
NSURLRequest *request = [NSURLRequest requestWithURL:URL];

//第2步：保存下載文件的文件名 //例如我們的文件名字符串等於 'jrqzn4q29vwy4mors75s_400x400.png'

NSString *fileName = [URL lastPathComponent];

//步驟3：用我們的請求創建AFHTTPRequestOperation對象

AFHTTPRequestOperation *downloadRequest = [[AFHTTPRequestOperation alloc] initWithRequest:request];

//第4步：設置服務器應答與請求d錯誤

[downloadRequest setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) { 
      // here we must create NSData object with received data... 
      NSData *data = [[NSData alloc] initWithData:responseObject]; 
      // ... and save this object as file 
      // Here 'pathToFile' must be path to directory 'Documents' on your device + filename, of course 
      [data writeToFile:pathToFile atomically:YES]; 
     } failure:^(AFHTTPRequestOperation *operation, NSError *error) { 
      NSLog(@"file downloading error : %@", [error localizedDescription]); 
     }];

//第5步：開始異步下載

[downloadRequest start];

來源

2015-03-04 15:53:27

PDF與AFNetworking 2.0下載

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