无法将 PDF 的 NSData POST 到服务器

发布于 2024-10-04 06:36:30 字数 2494 浏览 1 评论 0原文

我有一个 iPad 应用程序,需要向服务器发送一个 PDF 文件以及两个 POST 变量、一个用户 ID 和一个作业 ID。我使用下面的代码来执行此操作:

NSData *pdfData = [NSData dataWithContentsOfFile:currentPDFFileName];

    NSData *validPDF = [[NSString stringWithString:@"%PDF"] dataUsingEncoding: NSASCIIStringEncoding];
    if (!(pdfData && [[pdfData subdataWithRange:NSMakeRange(0, 4)] isEqualToData:validPDF])) 
    {
        NSLog (@"Not valid");
    }

    NSLog (@"%@", currentPDFFileName);
    NSLog (@"%@", [currentPDFFileName lastPathComponent]);

    //create the body
    NSMutableData *body = [NSMutableData data];

    //create the POST vars
    NSString *jobID = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"jobid\"\r\n\r\n%@", job.jobID];
    NSString *userID = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userid\"\r\n\r\n%@", delegate.userID];
    NSString *pdf = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image_file\"; filename=\"%@\"\r\n", [currentPDFFileName lastPathComponent]];

    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", @"----foo"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[jobID dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", @"----foo"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[userID dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", @"----foo"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[pdf dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[@"Content-Type: application/pdf\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:pdfData];

    NSMutableURLRequest *pdfRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://example.com"]];
    [pdfRequest setValue:@"multipart/form-data; boundary=----foo" forHTTPHeaderField:@"Content-type"];
    [pdfRequest setHTTPMethod:@"POST"];
    [pdfRequest setHTTPBody:body];
    NSData *pdfDataReply;
    NSURLResponse *pdfResponse;
    NSError *pdfError;
    pdfDataReply = [NSURLConnection sendSynchronousRequest:pdfRequest returningResponse:&pdfResponse error:&pdfError];

    NSString *pdfResult = [[NSString alloc] initWithData:pdfDataReply encoding:NSASCIIStringEncoding];
    NSLog (@"%@", pdfResult);

连接另一端的人说他们没有收到 PDF 文件。我已经尝试了所有常见的嫌疑人,例如试图找到任何零对象。

如果有人能帮忙的话,我将不胜感激!

谢谢。 瑞奇。

I have an iPad application in which I need to send a server a PDF file, alongside two POST variables, a user ID and a job ID. I am using the code below to do this:

NSData *pdfData = [NSData dataWithContentsOfFile:currentPDFFileName];

    NSData *validPDF = [[NSString stringWithString:@"%PDF"] dataUsingEncoding: NSASCIIStringEncoding];
    if (!(pdfData && [[pdfData subdataWithRange:NSMakeRange(0, 4)] isEqualToData:validPDF])) 
    {
        NSLog (@"Not valid");
    }

    NSLog (@"%@", currentPDFFileName);
    NSLog (@"%@", [currentPDFFileName lastPathComponent]);

    //create the body
    NSMutableData *body = [NSMutableData data];

    //create the POST vars
    NSString *jobID = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"jobid\"\r\n\r\n%@", job.jobID];
    NSString *userID = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userid\"\r\n\r\n%@", delegate.userID];
    NSString *pdf = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image_file\"; filename=\"%@\"\r\n", [currentPDFFileName lastPathComponent]];

    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", @"----foo"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[jobID dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", @"----foo"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[userID dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", @"----foo"] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[pdf dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[@"Content-Type: application/pdf\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:pdfData];

    NSMutableURLRequest *pdfRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://example.com"]];
    [pdfRequest setValue:@"multipart/form-data; boundary=----foo" forHTTPHeaderField:@"Content-type"];
    [pdfRequest setHTTPMethod:@"POST"];
    [pdfRequest setHTTPBody:body];
    NSData *pdfDataReply;
    NSURLResponse *pdfResponse;
    NSError *pdfError;
    pdfDataReply = [NSURLConnection sendSynchronousRequest:pdfRequest returningResponse:&pdfResponse error:&pdfError];

    NSString *pdfResult = [[NSString alloc] initWithData:pdfDataReply encoding:NSASCIIStringEncoding];
    NSLog (@"%@", pdfResult);

The people on the other end of the connection are saying that they are not receiving the PDF file. I have tried all the usual suspects such as trying to find any nil objects.

Would greatly appreciate if anyone could please lend a hand with this!

Thanks.
Ricky.

如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

扫码二维码加入Web技术交流群

发布评论

需要 登录 才能够评论, 你可以免费 注册 一个本站的账号。

评论(1

哽咽笑 2024-10-11 06:36:30

原来边界有问题。添加 pdfData 之后,我需要在末尾添加一个。感谢您的帮助。

Turns out there was an issue with the boundaries. I needed to add one at the end, after pdfData was added. Thank you for your help.

~没有更多了~
我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
原文