我应该发布 session ID，它是在验证凭据和图像数据期间生成的。但图像和 session ID 未上传。 当我使用 ASIHTTPRequest 时它工作正常，后来当我尝试使用 NSMutableUrlRequest 和 NSURLConnection 时它似乎不起作用。

下面给出的是用于发布图像和 session ID 的代码

- (void)postinDataToServer:(NSData *)inData
{
//inData is the image data.
[inData retain];  
NSString *urlString = @"http://xyz.com/abcd/kgh.php";
NSURL* url = [NSURL URLWithString:urlString];

NSMutableData *photoData = [[NSMutableData alloc]init];

//SessionID is stored in NSUserDefaults
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

NSString * boundary = @"photoBoundaryParm";
NSString * boundaryString = [NSString stringWithFormat:@"--%@\r\n", boundary];
NSString * boundaryStringFinal = [NSString stringWithFormat:@"--%@--\r\n", boundary];

[photoData appendData:[boundaryString dataUsingEncoding:NSUTF8StringEncoding]];
[photoData appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"SessionID\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[photoData appendData:[[NSString stringWithFormat:@"SessionID=%@",[defaults objectForKey:@"SessionID"]] dataUsingEncoding:NSUTF8StringEncoding]];
[photoData appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

[photoData appendData:[boundaryString dataUsingEncoding:NSUTF8StringEncoding]];
[photoData appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"photo\";\r\nfilename=\"myphoto.png\"\r\nContent-Type: image/png\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[photoData appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[photoData appendData:inData];
[photoData appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

[photoData appendData:[boundaryStringFinal dataUsingEncoding:NSUTF8StringEncoding]];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:photoData];

NSString* requestDataLengthString = [[NSString alloc] initWithFormat:@"%d", [photoData length]];

[request addValue:requestDataLengthString forHTTPHeaderField:@"Content-Length"];
[request addValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary] forHTTPHeaderField:@"Content-Type"];

NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self
                        startImmediately:NO];

[connection scheduleInRunLoop:[NSRunLoop mainRunLoop]
                      forMode:NSDefaultRunLoopMode];
[connection start];

[inData release];
inData = nil;
}

请帮忙。

我坚持了很长时间。

提前致谢。

最佳答案

尝试这段代码，并在 post nsstring 中传递你的值

NSString* url=[NSString stringWithFormat:url];

NSMutableURLRequest *theRequest=[NSMutableURLRequest requestWithURL:[NSURLURLWithString:[url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]
                                                        cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
                                                    timeoutInterval:60.0];
//do post request for parameter passing
[theRequest setHTTPMethod:@"POST"];

NSString *post = [NSString stringWithFormat:@"&imageData=%@",postData];



NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d",[postData length]];


[theRequest setValue:postLength forHTTPHeaderField:@"Content-Length"];
[theRequest setHTTPBody:postData];

[theRequest  setURL:[NSURL URLWithString:url]];

[theRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Current-Type"];

NSURLConnection  *serverConnectionObj = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

关于iphone - 如何在 NSMutableUrlRequest 中发布文本和图像数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19117693/