Question

我现在有点卡住了。首先，我对ios＆amp; amp; objective-c我正在尝试实现一个功能，我需要将多个pdf文件发送到一个电子邮件，而不使用mailpickercontroller，而是使用NSURLConnection。目前，这段代码可以向这些pdf文件中的每一个发送邮件，如果有人计划在他们的电子邮件上发送100个pdf，那就非常糟糕

NSString *defaultEmail = [config objectForKey:@"DEFAULT_EMAIL"];

NSArray *badgeDataLists = [self getBadgeDatas]; //list of nsdata from the pdf file

if ([NSURLConnection instancesRespondToSelector:@selector(originalRequest)] &&  defaultEmail && ![defaultEmail isEqualToString:@""])
{
    NSString * email = defaultEmail;
    NSString * path = [NSString stringWithFormat:@"http://app.receptionsignin.com/mail_notification.php?key=k6j3h5u6nvh3i5jsl60ao5uqjgmso4u1&type=badge&email=%@&for=%@", email, @"All Here to See people", nil];

    for (NSData *badgeData in badgeDataLists){

        NSMutableURLRequest * req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
        [req setHTTPMethod:@"POST"];

         [req setHTTPBody:badgeData];
         [req addValue: @"application/pdf" forHTTPHeaderField:@"Content-Type"];
         [req addValue: [NSString stringWithFormat:@"%d", badgeData.length] forHTTPHeaderField:@"Content-Length"];
        NSLog(@"Content %@", [[NSString alloc] initWithData:[req HTTPBody] encoding:NSUTF8StringEncoding]);
        [NSURLConnection sendAsynchronousRequest:req queue:nil completionHandler:nil];

    }                

}

我尝试过点这个链接this，this和that，其中基本上涉及这个'边界'和'多个/表单数据'。我确实遵循了这些提示并且我能够收到邮件，但它没有带附件，所以......是的，我需要帮助这个

Answer 1

嗯，提供的链接对我来说不是很有帮助，但我确实设法解决了这个问题。这是解决问题的代码。请注意，badgeDataLists只是图片的NSData。然后，让脚本位于此“路径”上以处理多个文件

  NSString * email = defaultEmail;
    NSString * path = @"some link";

    NSMutableURLRequest * req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
    [req setHTTPMethod:@"POST"];

    NSMutableData* body = [NSMutableData data];

    NSString *letters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    int len = 64;
    //Creates a random boundary
    NSMutableString *boundary = [NSMutableString stringWithCapacity: len];

    for (int i=0; i<len; i++) {
        [boundary appendFormat: @"%C", [letters characterAtIndex: arc4random() % [letters length]]];
    }
    [req setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary] forHTTPHeaderField:@"Content-Type"];
    NSData *boundaryData = [[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding];
    [body appendData:boundaryData];

    int i = 0;
    for (NSData *badgeData in badgeDataLists){

        // File upload
        [body appendData: [[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"badge[]\"; filename=\"%@\"\r\n\r\n",    [NSString stringWithFormat:@"badge%u.pdf",i++]] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[@"Content-Type: application/pdf\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData: badgeData]; // It just return NSData with loaded file in it
        if (i != [badgeDataLists count]){
            [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        }
    }
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

    [req setValue:[NSString stringWithFormat:@"%d", [body length]] forHTTPHeaderField:@"Content-Length"];
    [req setHTTPBody:body];
    [NSURLConnection sendAsynchronousRequest:req queue:nil completionHandler:nil];

Objective C在HTTP帖子上发送多个文件

1 个答案: