在相同的POST中发送NSData和NSString

我试图按照这种插入imagedata从XCode使用PHP和JSON答案将数据从我的应用程序发送到MySQL数据库，但我很困惑如何添加一个NSString ID引用到POST正文的XCode MySQL数据库。

我们有如下创build获取图像数据的主体：

  NSMutableData *body = [NSMutableData data]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image\"; filename=\"imagename.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[@"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]]; // setting the body of the post to the reqeust [request setHTTPBody:body]; 

我怎样才能在同一篇文章中发送附加信息，例如文本ID？

Answer 1

这里是整个代码发布的数据与Imagedata和string。

 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; [request setHTTPMethod:@"POST"]; NSString *boundary = @"---------------------------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 stringWithFormat:@"Content-Disposition: form-data; name=\"image\"; filename=\"imagename.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[@"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]; NSMutableDictionary *dict = [[NSMutableDictionary alloc] init]; [dict setObject:@"<YOUR TEXT>" forKey:@"<KEY>"]; [body appendData:[self createFormData:dict withBoundary:boundary]]; [request setHTTPBody:body]; NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; NSLog(@"%@", returnString); - (NSData*)createFormData:(NSDictionary*)myDictionary withBoundary:(NSString*)myBounds { NSMutableData *myReturn = [[NSMutableData alloc] init]; NSArray *formKeys = [myDictionary allKeys]; for (int i = 0; i < [formKeys count]; i++) { [myReturn appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",myBounds] dataUsingEncoding:NSASCIIStringEncoding]]; [myReturn appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n%@",[formKeys objectAtIndex:i],[myDictionary valueForKey:[formKeys objectAtIndex:i]]] dataUsingEncoding:NSASCIIStringEncoding]]; } return myReturn; } 

Answer 2

我认为你要找的是setValue：forHTTPHeaderField：

 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.example.com"]]; request.HTTPMethod = @"POST"; request.HTTPBody = body; [request setValue:@"someValue" forHTTPHeaderField:@"someField"];