Question

我从另一个视图获取PassedUserId值。我可以在日志中打印该值。但它没有分配给url字符串。在这里，我试图传递文本与图像。

NSString *requestString =[NSString stringWithFormat:@"UserId=%@&CategoryId=%@&Continent=%@&Country=%@&City=%@&Gender=%@&ImageName=%@&AgeRange=%@",PassedUserId,CategoryId,continentTextfield.text,countrytextfield.text,citytextfield.text,gender,imagename,ageTextfield.text];

NSString *url=[NSString stringWithFormat:@"http://192.168.2.4:98/UserImage.svc/InsertFacialImage?%@",requestString];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;
[request setURL:[NSURL URLWithString:url]];
[request setHTTPMethod:@"POST"];

// Create 'POST' MutableRequest with Data and Other Image Attachment.


NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
[request setValue:contentType forHTTPHeaderField:@"Content-Type"];
NSData *data = UIImageJPEGRepresentation(chosenImage, 0.2f);
[request addValue:@"image/JPEG" forHTTPHeaderField:@"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[NSData dataWithData:data]];
[request setHTTPBody:body];

NSData *returnData;
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];

NSLog(@"Ret: %@",returnString);

Answer 1

我注意到的第一件事是你交换了两个值：

stringWithFormat:@"UserId=%@&CategoryId=%@...",CategoryId,PassedUserId

您能更具体地了解CategoryId和PassedUserId的数据类型吗？

如果他们是字符串，那么你就是正确行事。如果它们是数据类型整数，则应使用%i而不是%@。

来自另一个ViewController的传递字符串不能与NSUrl一起使用

1 个答案: