我们正在尝试使用 AFNetworking 向服务器发送多部分请求。我们需要发送一个 JSON 对象和两个图像文件。以下是相同的卷曲请求。
curl -X POST http://localhost:8080/Circle/restapi/offer/add -H "Content-Type: multipart/form-data" -F "offerDTO={"code": null,"name": "Merry X'Mas - 1","remark": "25% discount on every purchase","validityDate": "22-12-2014","domainCode": "DO - 1","merchantCode": "M-4","isApproved": false,"discountValue": 25,"discountType": "PERCENTAGE"};type=application/json" -F "image=@Team Page.png;type=image/png" -F "letterhead=@Team Page.png;type=image/png"我知道这应该相当容易，因为我已经实现了服务器以及相同的 Android 代码。我的朋友正在研究其中的 iOS 部分。我也在谷歌上搜索了很多，但没有得到任何有用的东西。
这是我们尝试过的代码：
UIImage *imageToPost = [UIImage imageNamed:@"1.png"];
NSData *imageData = UIImageJPEGRepresentation(imageToPost, 1.0);
offerDTO = [[NSMutableDictionary alloc]init];
[offerDTO setObject(angry)"" forKey:@"code"];
[offerDTO setObject:[NSString stringWithFormat:@"Testing"] forKey:@"discountDiscription"];
[offerDTO setObject:[NSString stringWithFormat:@"Test"] forKey:@"remark"];
[offerDTO setObject:@"07-05-2015" forKey:@"validityDate"];
[offerDTO setObject:@"C-7" forKey:@"creatorCode"];
[offerDTO setObject:@"M-1" forKey:@"merchantCode"];
[offerDTO setObject:[NSNumber numberWithBool:true] forKey:@"isApproved"];
[offerDTO setObject:@"2.4" forKey:@"discountValue"];
[offerDTO setObject:[NSString stringWithFormat:@"FREE"] forKey:@"discountType"];
NSURL *urlsss = [NSURL URLWithString:@"http://serverurl:8180"];
AFHTTPClient *client= [AFHTTPClient clientWithBaseURL:urlsss];
NSMutableURLRequest *request = [client multipartFormRequestWithMethod:@"POST"
path:@"/restapi/offer/add" parameters:nil constructingBodyWithBlock: ^(id <AFMultipartFormData>formData)
{
NSData *myData = [NSJSONSerialization dataWithJSONObject:offerDTO
options:NSJSONWritingPrettyPrinted
error:NULL];
[formData appendPartWithFileData:imageData name:@"image"
fileName:@"image.jpg"
mimeType:@"image/jpeg"];
[formData appendPartWithFileData:imageData name:@"letterhead"
fileName:@"image.jpg"
mimeType:@"image/jpeg"];
[formData appendPartWithFormData:myData name:@"offerDTO"];
}
];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSDictionary *jsons = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:nil];
}
failure:^(AFHTTPRequestOperation operation, NSError error)
{
NSLog(@"error: %@", [operation error]);
}
];
一些观察：
您的示例是 AFNetworking 1.x。 AFNetworking 3.x 版本可能如下所示：
NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"1" withExtension:@"png"];
// If you need to build dictionary dynamically as in your question, that's fine,
// but sometimes array literals are more concise way if the structure of
// the dictionary is always the same.
// Also note that these keys do _not_ match what are present in the `curl`
// so please double check these keys (e.g. `discountDiscription` vs
// `discountDescription` vs `name`)!
NSDictionary *offerDTO = @{@"code" : @"",
@"discountDescription" : @"Testing",
@"remark" : @"Test",
@"validityDate" : @"07-05-2015",
@"creatorCode" : @"C-7",
@"merchantCode" : @"M-1",
@"isApproved" : @YES,
@"discountValue" : @2.4,
@"discountType" : @"FREE"};
// `AFHTTPSessionManager` is AFNetworking 3.x equivalent to `AFHTTPClient` in AFNetworking 1.x
NSURL *baseURL = [NSURL URLWithString:@"http://serverurl:8180"];
AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc] initWithBaseURL:baseURL];
// The `POST` method both creates and issues the request
[manager POST:@"/restapi/offer/add" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) {
NSError *error;
BOOL success;
success = [formData appendPartWithFileURL:fileURL
name:@"image"
fileName:@"image.jpg"
mimeType:@"image/png"
error:&error];
NSAssert(success, @"Failure adding file: %@", error);
success = [formData appendPartWithFileURL:fileURL
name:@"letterhead"
fileName:@"image.jpg"
mimeType:@"image/png"
error:&error];
NSAssert(success, @"Failure adding file: %@", error);
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:offerDTO options:0 error:&error];
NSAssert(jsonData, @"Failure building JSON: %@", error);
// You could just do:
//
// [formData appendPartWithFormData:jsonData name:@"offerDTO"];
//
// but I now notice that in your `curl`, you set the `Content-Type` for the
// part, so if you want to do that, you could do it like so:
NSDictionary *jsonHeaders = @{@"Content-Disposition" : @"form-data; name=\"offerDTO\"",
@"Content-Type" : @"application/json"};
[formData appendPartWithHeaders:jsonHeaders body:jsonData];
} progress:^(NSProgress * _Nonnull uploadProgress) {
// do whatever you want here
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(@"responseObject = %@", responseObject);
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@"error = %@", error);
}];
您正在此处创建一个操作，但从未将其添加到队列中以启动它。我假设你在其他地方这样做。值得注意的是，
AFHTTPSessionManagerAFHTTPRequestOperationManagerAFHTTPClient注意，AFNetworking 现在假定响应将是 JSON。鉴于您的代码表明响应是 JSON，请注意不需要
JSONObjectWithData现在您的代码正在（a）创建
UIImageNSDataformData具体来说，通过获取图像资产，将其加载到
UIImageUIImageJPEGRepresentationNSDataUIImage在请求中添加
NSData您可以将您的 NSdictionary 直接传递给参数字段中的管理器帖子块
UIImage *imageToPost = [UIImage imageNamed:@"1.png"];
NSData *imageData = UIImageJPEGRepresentation(imageToPost, 1.0);
NSDictionary *offerDTO = @{@"code" : @"",
@"discountDescription" : @"Testing",
@"remark" : @"Test",
@"validityDate" : @"07-05-2015",
@"creatorCode" : @"C-7",
@"merchantCode" : @"M-1",
@"isApproved" : @YES,
@"discountValue" : @2.4,
@"discountType" : @"FREE"};
NSURL *baseURL = [NSURL URLWithString:@"http://serverurl:8180"];
AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];
[manager POST:@"/restapi/offer/add" parameters:offerDTO constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileData:imageData name:@"image"
fileName:@"image.jpg"
mimeType:@"image/jpeg"];
[formData appendPartWithFileData:imageData name:@"letterhead"
fileName:@"image.jpg"
mimeType:@"image/jpeg"];
[formData appendPartWithHeaders:jsonHeaders body:jsonData];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"responseObject = %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"error = %@", error);
}]
;