发送UIImage和文本到服务器

我有一个简单的问题 - 我目前正在写一个特定的部分在我的应用程序有关发送数据到服务器。发送UIImage和文本到服务器

我试着发送文本，成功了。发送图像，成功。我现在想要做的是在一个POST请求中发送它们。我发现我需要使用称为multipart/form-data和边界的东西，但我还没有找到有关它的信息。

那么如何在一个简单的POST请求中发送文本和图像呢？我怎样才能检查上传过程中的错误，事后等？

谢谢！

参考代码，我已经写了，但发送0字节的信息的：

NSData *imageData = UIImageJPEGRepresentation(sendImage, 1.0); 
    // setting up the request object now 
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:[NSURL URLWithString:@"http://posttestserver.com/post.php?dir=something"]]; 
    [request setHTTPMethod:@"POST"]; 
    NSString *boundary = @"---------------------------54737809831466490885746641449"; 
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary]; 
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"]; 

    NSMutableData *body = [NSMutableData data]; 
    [body appendData:[[NSString stringWithFormat:@"rn--%@rn",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"Content-Disposition: form-data; name=\"userfile\"; filename=\"reportingImage.jpg\"rn" dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"Content-Type: application/octet-streamrnrn" dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[NSData dataWithData:imageData]]; 
    [body appendData:[[NSString stringWithFormat:@"rn--%@--rn",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"Content-Type: text/xml" dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[[alertView textFieldAtIndex:0] text] dataUsingEncoding:NSUTF8StringEncoding]]; 
    // setting the body of the post to the reqeust 
    [request setHTTPBody:body]; 

    // now lets make the connection to the web 
    NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
    NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; 

    NSLog(returnString);

来源

2013-04-12 Lior Pollak

几个PARAMS试试这个http://stackoverflow.com/questions/14598044/how-to-send-image-and-text-toget她使用nsmutableurlrequest – Buntylm

在该答案的代码工作，非常感谢！ –

我也给出了同样的答案。 – Buntylm

你可能想使用网络图书馆像AFNetworking，并保存自己一些时间:)

来源

2013-04-12 11:54:39 supermarin

这是一个工作片段发送文本和图像，可选择一些文本时，每次使用

//After dismissing the alert, we get its text (user location and notes) and the picture he took 

    NSMutableData *body = [NSMutableData data]; 
    NSURL *url = [NSURL URLWithString:@"http://posttestserver.com/post.php?dir=Doda"]; //Test server, you can access it online to see the upload 
    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url]; 
    [req setHTTPMethod:@"POST"]; 
    NSString *boundary = @"---------------------------14737809831466499882746641449"; //I have no idea what this is, but without it the code won't work 
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]; 
    [req setValue:contentType forHTTPHeaderField: @"Content-Type"]; 

    //Attaching image 
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"Content-Disposition: attachment; name=\"imageOfReport\"; filename=\"imageOfReport.jpg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[NSData dataWithData:UIImageJPEGRepresentation(sendImage, 1.0)]]; //Crucial, getting a JPEG version of the image and sending it 
    [body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 

    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"report_description\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[[alertView textFieldAtIndex:0] text] dataUsingEncoding:NSUTF8StringEncoding]]; //Crucial, taking the text from the Alert and sending it 
    [body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [req setHTTPBody:body]; 

    //Below are few lines which can add other parameters and text 
    /*  [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"spid\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [req setHTTPBody:body];*/ 

    NSURLConnection *sendingTheData2 = [[NSURLConnection alloc] initWithRequest:req delegate:self startImmediately:YES]; //Sent! ;)

来源

2013-04-12 12:46:43

发送UIImage和文本到服务器

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