因此，此HTML代码以正确的格式提交数据。
<form action="https://www.example.com/register.php" method="post" enctype="multipart/form-data">
Name: <input type="text" name="userName"><BR />
Email: <input type="text" name="userEmail"><BR />
Password: <input type="text" name="userPassword"><BR />
Avatar: <input type="file" name="avatar"><BR />
<input type="submit">
</form>
我已经查看过很多关于如何在iOS上进行多部分/表格数据POST的文章，但没有一篇真正解释如果有正常参数和文件上传该怎么办。
你能帮我解决一下在Obj-C中发布这个问题的代码吗？
谢谢！
答案 0 :(得分：166)
流程如下：
使用userName，userEmail和userPassword参数创建字典。
NSDictionary *params = @{@"userName" : @"rob",
@"userEmail" : @"rob@email.com",
@"userPassword" : @"password"};
确定图像的路径：
NSString *path = [[NSBundle mainBundle] pathForResource:@"avatar" ofType:@"png"];
创建请求：
NSString *boundary = [self generateBoundaryString];
// configure the request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setHTTPMethod:@"POST"];
// set content type
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
[request setValue:contentType forHTTPHeaderField: @"Content-Type"];
// create body
NSData *httpBody = [self createBodyWithBoundary:boundary parameters:params paths:@[path] fieldName:fieldName];
这是上面用于构建请求正文的方法：
- (NSData *)createBodyWithBoundary:(NSString *)boundary
parameters:(NSDictionary *)parameters
paths:(NSArray *)paths
fieldName:(NSString *)fieldName {
NSMutableData *httpBody = [NSMutableData data];
// add params (all params are strings)
[parameters enumerateKeysAndObjectsUsingBlock:^(NSString *parameterKey, NSString *parameterValue, BOOL *stop) {
[httpBody appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[httpBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", parameterKey] dataUsingEncoding:NSUTF8StringEncoding]];
[httpBody appendData:[[NSString stringWithFormat:@"%@\r\n", parameterValue] dataUsingEncoding:NSUTF8StringEncoding]];
}];
// add image data
for (NSString *path in paths) {
NSString *filename = [path lastPathComponent];
NSData *data = [NSData dataWithContentsOfFile:path];
NSString *mimetype = [self mimeTypeForPath:path];
[httpBody appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[httpBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@\"\r\n", fieldName, filename] dataUsingEncoding:NSUTF8StringEncoding]];
[httpBody appendData:[[NSString stringWithFormat:@"Content-Type: %@\r\n\r\n", mimetype] dataUsingEncoding:NSUTF8StringEncoding]];
[httpBody appendData:data];
[httpBody appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
}
[httpBody appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
return httpBody;
}
以上使用以下实用程序方法：
@import MobileCoreServices; // only needed in iOS
- (NSString *)mimeTypeForPath:(NSString *)path {
// get a mime type for an extension using MobileCoreServices.framework
CFStringRef extension = (__bridge CFStringRef)[path pathExtension];
CFStringRef UTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, extension, NULL);
assert(UTI != NULL);
NSString *mimetype = CFBridgingRelease(UTTypeCopyPreferredTagWithClass(UTI, kUTTagClassMIMEType));
assert(mimetype != NULL);
CFRelease(UTI);
return mimetype;
}
- (NSString *)generateBoundaryString {
return [NSString stringWithFormat:@"Boundary-%@", [[NSUUID UUID] UUIDString]];
}
然后提交请求。这里有很多很多选择。
例如，如果使用NSURLSession，则可以创建NSURLSessionUploadTask：
NSURLSession *session = [NSURLSession sharedSession]; // use sharedSession or create your own
NSURLSessionTask *task = [session uploadTaskWithRequest:request fromData:httpBody completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(@"error = %@", error);
return;
}
NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"result = %@", result);
}];
[task resume];
或者您可以创建NSURLSessionDataTask：
request.HTTPBody = httpBody;
NSURLSessionTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(@"error = %@", error);
return;
}
NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"result = %@", result);
}];
[task resume];
以上假设服务器只是返回文本响应。如果服务器返回JSON会更好，在这种情况下，您使用NSJSONSerialization而不是NSString方法initWithData。
同样，我正在使用上面NSURLSession的完成块再现，但也可以使用更丰富的基于委托的再现。但这似乎超出了这个问题的范围，所以我会把它留给你。
但希望这说明了这个想法。
如果我没有指出这一点，比上述更容易，我可以使用AFNetworking，重复上面的步骤1和2，然后只是调用：
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer]; // only needed if the server is not returning JSON; if web service returns JSON, remove this line
NSURLSessionTask *task = [manager POST:urlString parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
NSError *error;
if (![formData appendPartWithFileURL:[NSURL fileURLWithPath:path] name:@"avatar" fileName:[path lastPathComponent] mimeType:@"image/png" error:&error]) {
NSLog(@"error appending part: %@", error);
}
} progress:nil success:^(NSURLSessionTask *task, id responseObject) {
NSLog(@"responseObject = %@", responseObject);
} failure:^(NSURLSessionTask *task, NSError *error) {
NSLog(@"error = %@", error);
}];
if (!task) {
NSLog(@"Creation of task failed.");
}
答案 1 :(得分：2)
使用Objective-C
使用multipart或form-data POST多个图像-(void)multipleimageandstring
{
NSString *urlString=@"URL NAME";
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];
NSMutableData *body = [NSMutableData data];
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
[request addValue:contentType forHTTPHeaderField:@"Content-Type"];
// file
float low_bound = 0;
float high_bound =5000;
float rndValue = (((float)arc4random()/0x100000000)*(high_bound-low_bound)+low_bound);//image1
int intRndValue = (int)(rndValue + 0.5);
NSString *str_image1 = [@(intRndValue) stringValue];
UIImage *chosenImage1=[UIImage imageNamed:@"Purchase_GUI_curves-12 copy.png"];
NSData *imageData = UIImageJPEGRepresentation(chosenImage1, 90);
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"files\"; filename=\"%@.png\"\r\n",str_image1] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"name\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Nilesh" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"apipassword\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:app.password] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"adminId\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:app.adminId] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
// close form
[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
// set request body
[request setHTTPBody:body];
//return and test
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(@"%@", returnString);
}
答案 2 :(得分：1)
尝试将此用于具有不同mime类型的视频和图像数据。
NSDictionary *param;
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
// 1. Create `AFHTTPRequestSerializer` which will create your request.
AFHTTPRequestSerializer *serializer = [AFHTTPRequestSerializer serializer];
NSMutableURLRequest *request;
NSData *fileData;
if ([objDoc.url containsString:@".mp4"]) {
manager.responseSerializer.acceptableContentTypes = [manager.responseSerializer.acceptableContentTypes setByAddingObject:@"application/json"];
[serializer setValue:@"video/mp4" forHTTPHeaderField:@"Content-Type"];
manager.requestSerializer = serializer;
}
// 2. Create an `NSMutableURLRequest`.
NSLog(@"filename =%@",objDoc.url);
request= [serializer multipartFormRequestWithMethod:@"POST" URLString:strUrl parameters:param constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
if ([objDoc.url containsString:@".mp4"]) {
[formData appendPartWithFileData:fileData
name:@"File"
fileName:@"video.mp4"
mimeType:@"video/mp4"];
}else{
[formData appendPartWithFileData:fileData
name:@"File"
fileName:@"image.jpeg"
mimeType:@"image/jpeg"];
}
} error:nil];
// 3. Create and use `AFHTTPRequestOperationManager` to create an `AFHTTPRequestOperation` from the `NSMutableURLRequest` that we just created.
self.objeDocument.isUploading = [NSNumber numberWithInt:1];
self.operation = [manager HTTPRequestOperationWithRequest:request
success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"Success %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Error!" message:@"The document attached has failed to upload." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alert show];
[self.operation cancel];
NSLog(@"Failure %@", error.description);
}];
// 4. Set the progress block of the operation.
[self.operation setUploadProgressBlock:^(NSUInteger __unused bytesWritten,
long long totalBytesWritten,
long long totalBytesExpectedToWrite) {
NSLog(@"Wrote %lld/%lld", totalBytesWritten, totalBytesExpectedToWrite);
float progress = (float)totalBytesWritten/(float)totalBytesExpectedToWrite;
}];
// 5. Begin!
[self.operation start];
答案 3 :(得分：0)
我挣扎了一段时间，如果您正在寻找上传多个图片或任何其他文件类型，您可以使用AFNetworking 3.0
NSDictionary *params = @{key : value,
..... etc
};
NSString *urlString = @"http://..... your endpoint url";
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer]; // only needed if the server is not returning JSON;
NSURLSessionTask *task = [manager POST:urlString parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
for (int x = 0 ; x< contentArray.count; x++) {
AttachmentsModel *model = contentArray[x];
if(model.type == ImageAttachmentType){
[formData appendPartWithFileData:model.data name:model.name fileName:model.fileName mimeType:model.mimeType];
}else if(model.type == AudioAttachmentType){
NSURL *urlVideoFile = [NSURL fileURLWithPath:model.path];
[formData appendPartWithFileURL:urlVideoFile name:model.name fileName:model.fileName mimeType:model.mimeType error:nil];
}else{
[formData appendPartWithFileURL:model.url name:model.name fileName:model.fileName mimeType:model.mimeType error:nil];
}
}
} progress:nil success:^(NSURLSessionTask *task, id responseObject) {
[Utility stopLoading];
NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
NSLog(@"result = %@", result);
id json = [NSJSONSerialization JSONObjectWithData:responseObject options:0 error:nil];
if (block) {
//your response comes here
}
} failure:^(NSURLSessionTask *task, NSError *error) {
NSLog(@"error = %@", error);
}];
if (!task) {
NSLog(@"Creation of task failed.");
}
以下是我的AttachmentsModel的样子：
// AttachmentsModel.h
typedef enum AttachmnetType{
ImageAttachmentType,
AudioAttachmentType,
VideoAttachmentType
} AttachmnetType;
@interface AttachmentsModel : NSObject
@property (strong, nonatomic) NSString *path;
@property (strong, nonatomic) NSData *data;
@property (strong, nonatomic) NSString *mimeType;
@property (strong, nonatomic) NSString *name;
@property (strong, nonatomic) NSString *fileName;
@property (strong, nonatomic) NSURL *url;
答案 4 :(得分：0)
尝试一下：
快速5
private func buildMultipartDataRequest(_ request: NetworkRequest, baseURL: NetworkEndPoint) -> URLRequest? {
var returnRequest: NSMutableURLRequest?
if let data = request.multipartData,
let mimeType = request.mimeType,
let fileName = request.fileName {
var requestPath = request.endPoint.value
if let urlParameters = request.urlParameters {
requestPath += urlParameters.requestString()
}
let completePath = String(format: "%@%@", baseURL.value, requestPath)
if let cleanPath = completePath.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed),
let url = URL(string: cleanPath) {
returnRequest = NSMutableURLRequest(url: url)
returnRequest?.httpMethod = request.HTTPMethod.rawValue
var allheaders: [String: String] = [ :]
if let headers = request.headers {
allheaders = headers
}
returnRequest?.allHTTPHeaderFields = allheaders
let boundary = boundaryString()
returnRequest?.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
let encoding: UInt = String.Encoding.utf8.rawValue
if let boundaryStartData = "--\(boundary)\r\n".data(using: String.Encoding(rawValue: encoding)),
let fileNameData = "Content-Disposition:form-data; name=\"picture\"; filename=\"\(fileName)\"\r\n".data(using: String.Encoding(rawValue: encoding)),
let contentTypeData = "Content-Type: \(mimeType)\r\n\r\n".data(using: String.Encoding(rawValue: encoding)),
let endLineData = "\r\n".data(using: String.Encoding(rawValue: encoding)),
let boundaryEndData = "--\(boundary)--\r\n".data(using: String.Encoding(rawValue: encoding)) {
let body = NSMutableData()
if let bodyParameters = request.bodyParameters as? [String: AnyObject] {
bodyParameters.forEach { (pair) in
if let key = "Content-Disposition: form-data; name=\"\(pair.key)\"\r\n\r\n".data(using: String.Encoding(rawValue: encoding)),
let value = "\(pair.value)\r\n".data(using: String.Encoding(rawValue: encoding)) {
body.append(boundaryStartData)
body.append(key)
body.append(value)
}
}
}
body.append(boundaryStartData)
body.append(fileNameData)
body.append(contentTypeData)
body.append(data)
body.append(endLineData)
body.append(boundaryEndData)
returnRequest?.httpBody = body as Data
}
}
}
return returnRequest as URLRequest?
}
其中NetworkRequest-封装请求信息的简单协议
protocol NetworkRequest: class {
var HTTPMethod: NetworkRequestType { get }
var endPoint: NetworkEndPoint { get }
var urlParameters: [String: AnyObject]? { get }
var bodyParameters: AnyObject? { get }
var headers: [String: String]? { get }
var multipartData: Data? { get }
var mimeType: NetworkMimeType? { get }
var fileName: String? { get }
}
NetworkEndPoint-端点值
struct NetworkEndPoint {
let value: String
}
边界刺
private func boundaryString() -> String {
return "Boundary-\(UUID().uuidString)"
}
NetworkRequestType：
enum NetworkRequestType: String {
case UNKNOWN
case POST
case GET
case PUT
case DELETE
case PATCH
// ....
}
NetworkMimeType
enum NetworkMimeType: String {
case html, htm, shtml = "text/html"
case css = "text/css"
case xml = "text/xml"
case gif = "image/gif"
case jpeg, jpg = "image/jpeg"
case jScript = "application/javascript"
case atom = "application/atom+xml"
case rss = "application/rss+xml"
case mml = "text/mathml"
case txt = "text/plain"
case jad = "text/vnd.sun.j2me.app-descriptor"
case wml = "text/vnd.wap.wml"
case htc = "text/x-component"
case png = "image/png"
case tiff, tif = "image/tiff"
case wbmp = "image/vnd.wap.wbmp"
case ico = "image/x-icon"
case jng = "image/x-jng"
case bmp = "image/x-ms-bmp"
case svg, svgz = "image/svg+xml"
case webp = "image/webp"
case woff = "application/font-woff"
case jar, war, ear = "application/java-archive"
case json = "application/json"
case hqx = "application/mac-binhex40"
case doc = "application/msword"
case pdf = "application/pdf"
case postscript, eps, aiPostscript = "application/postscript"
case rtf = "application/rtf"
case m3u8 = "application/vnd.apple.mpegurl"
case xls = "application/vnd.ms-excel"
case eot = "application/vnd.ms-fontobject"
case ppt = "application/vnd.ms-powerpoint"
case wmlc = "application/vnd.wap.wmlc"
case kml = "application/vnd.google-earth.kml+xml"
case kmz = "application/vnd.google-earth.kmz"
case sevenZ = "application/x-7z-compressed"
case cco = "application/x-cocoa"
case jardiff = "application/x-java-archive-diff"
case jnlp = "application/x-java-jnlp-file"
case run = "application/x-makeself"
case perl, perlm = "application/x-perl"
case prc, pdb = "application/x-pilot"
case rar = "application/x-rar-compressed"
case rpm = "application/x-redhat-package-manager"
case sea = "application/x-sea"
case swf = "application/x-shockwave-flash"
case sit = "application/x-stuffit"
case tcl = "application/x-tcl"
case der, pem, crt = "application/x-x509-ca-cert"
case xpi = "application/x-xpinstall"
case xhtml = "application/xhtml+xml"
case xspf = "application/xspf+xml"
case zip = "application/zip"
case bin, exe, dll, deb, dmg, iso, img, msi, msp, msm = "application/octet-stream"
case docx = "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
case xlsx = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
case pptx = "application/vnd.openxmlformats-officedocument.presentationml.presentation"
case mid, midi, kar = "audio/midi"
case mp3 = "audio/mpeg"
case ogg = "audio/ogg"
case m4a = "audio/x-m4a"
case realAudio = "audio/x-realaudio"
case threegpp, threegp = "video/3gpp"
case mpts = "video/mp2t"
case mp4 = "video/mp4"
case mpeg, mpg = "video/mpeg"
case mov = "video/quicktime"
case webm = "video/webm"
case flv = "video/x-flv"
case m4v = "video/x-m4v"
case mng = "video/x-mng"
case asx, asf = "video/x-ms-asf"
case wmv = "video/x-ms-wmv"
case avi = "video/x-msvideo"
}