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Question

我在 youtube xD 上找到了这段代码，我的问题是，如何添加额外的参数？

 NSData *imageData = UIImageJPEGRepresentation(imagen.image,0.0);
 NSString *urlString = @"http://urlexample.com/upload.php";
 NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
 [request setURL:[NSURL URLWithString:urlString]];
 [request setHTTPMethod:@"POST"];

 NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
 NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
 [request addValue:contentType forHTTPHeaderField:@"Content-Type"];

 NSMutableData *body = [NSMutableData data];
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"userfile\"; filename=\".jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[NSData dataWithData:imageData]];
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 [request setHTTPBody:body];

 NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
 NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];

 NSLog(returnString);

我试试

[body appendData:[[NSString stringWithFormat:@"extra=%@",info] dataUsingEncoding:NSUTF8StringEncoding];

呵呵，正如您所见，我对此 100% 是新的。请帮帮我xD

Answer 1

我最近遇到了this earlier thread，我认为您正在寻找类似这样的东西来添加一个名为 foo 的字段并将其设置为 bar：

[body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"foo\"\r\n\r\nbar\n"]]];