发送字符串：收到错误

我试图用下面的代码通过FTP发送一个字符串，但我得到一个错误：发送字符串：收到错误

{ 

    //miscellaneous lines of code..... 
    //Convert contents of shopping cart into a property list 
    [Cart serializeCart]; 

    //now need to transport the propertyList to the webserver 
    //first step is get the serialized propertylist from the documents folder 
    NSString *pathToSerializedCart = [rootPath stringByAppendingPathComponent:@"serializedCart.plist"]; 

    NSString *shoppingCartString; 

    if (![fileManager fileExistsAtPath:pathToSerializedCart]) 
    { 
     NSLog(@"ERROR:\nCouldnt find serialized cart in documents folder."); 
    } 
    else 
    { 
     NSData *serializedData = [NSData   dataWithContentsOfFile:pathToSerializedCart]; 
     shoppingCartString = [[NSString alloc] initWithData:serializedData encoding:NSUTF8StringEncoding]; 
    } 

    NSLog(@"%@", shoppingCartString); 
    //Now that the cart is converted into a string. it is ready for transport 
    NSURL *url = [NSURL URLWithString:@"ftp://username:[email protected]/folder/serializedCart.xml"]; 

    BOOL OK =[shoppingCartString writeToURL:url atomically:NO encoding:NSUTF8StringEncoding error:&error]; 
    if(!OK) { 
     NSLog(@"Error writing to file %@ , error = %@", url, [error localizedFailureReason]); 
    }

我得到以下控制台输出的代码：

Error writing to file ftp://username:[email protected]/folder/serializedCart.xml , error = (null)

其中一个变量：_domain在最后一行此错误对象时，我鼠标移到它在调试过程中说NSCocoaErrorDomain

我不知道怎么调试ŧ他的。有人可以提出任何建议吗？

来源

2011-06-20 banditKing

的writeToURL:..方法不支持FTP协议。您将不得不使用其他机制将字符串内容写入ftp服务器。您可以查看诸如ios-ftp-server之类的工具来处理此类上传。你也可以从Apple看这个sample code。

来源

2011-06-20 04:14:05

发送字符串：收到错误

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