我正在开发一款iPad App。在这里，我有一个任务，我已成功将Image转换为PDF文件。
现在我需要通过HTTP请求在服务器端保存转换后的PDF文件。
当我发送HTTP请求时，我收到错误无法读取数据，因为格式不正确。
我哪里错了？
我的代码
// url path to php file
let url = URL(string: "\(Config.path)/uploadAva.php")!
// declare request to this file
var request = URLRequest(url: url)
// declare method of passign inf to this file
request.httpMethod = "POST"
// param to be sent in body of request
let param = ["AppId":Config.AppID , "uuid":Config.uuid , "Id" : userID]
// body
let boundary = "Boundary-\(UUID().uuidString)"
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
// ... body
request.httpBody = createBody(param, filePathKey: "file", imageDataKey: pdfdata as Data, boundary: boundary)
// launc session
URLSession.shared.dataTask(with: request) { data, response, error in
// get main queue to communicate back to user
DispatchQueue.main.async(execute: {
if error == nil {
do {
let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
print(json)
} catch {
//Here I get error as The data couldn’t be read because it isn’t in the correct format.
}
} else {
}
})
}.resume()
// custom body of HTTP request to upload pdf file
func createBody(_ parameters: [String: String]?, filePathKey: String?, imageDataKey: Data, boundary: String) -> Data {
let body = NSMutableData()
if parameters != nil {
for (key, value) in parameters! {
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: attachment; name=\"\(key)\"\r\n\r\n")
body.appendString("\(value)\r\n")
}
}
let filename = "ava.pdf"
let mimetype = "application/pdf"
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Type: application/pdf;name=\"ava10.pdf\"\r\n" )
body.appendString("Content-Disposition:attachment;filename=\"ava10.pdf\"\r\n")
body.append(imageDataKey)
body.appendString("\r\n")
body.appendString("--\(boundary)--\r\n")
return body as Data
}
答案 0 :(得分：0)
Please follow below flow:
////// FILE BINARY DATA
NSData *data = FILE DATA;
////This will contain properties for server requirement & file properties
NSDictionary *dictionary = FILE_SERVER_ATTRIBUTE_DICT
////Create Boundary
NSDate *dt = [[NSDate alloc] initWithTimeIntervalSinceNow:0];
NSInteger timestamp = [dt timeIntervalSince1970];
NSString *HTTPRequestBodyBoundary = [NSString stringWithFormat:@"BOUNDARY-%ld-%@", (long)timestamp, [[NSProcessInfo processInfo] globallyUniqueString]]; // You could calculate a better boundary here.
multipartBoundary = HTTPRequestBodyBoundary;
////HTTP BODY for request start
NSMutableData *HTTPRequestBody = [NSMutableData data];
////Add Boundry to data : Opening Boundary
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"--%@\r\n", HTTPRequestBodyBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
// Add Key/Values to the Body
NSEnumerator *enumerator = [dictionary keyEnumerator];
NSString *key = nil;
//// Collecting HTTP Request body parts from File and server properties
NSMutableArray *HTTPRequestBodyParts = [NSMutableArray array];
while ((key = [enumerator nextObject]))
{
NSMutableData *someData = [[NSMutableData alloc] init];
[someData appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", key] dataUsingEncoding:NSUTF8StringEncoding]];
[someData appendData:[[NSString stringWithFormat:@"%@", [dictionary objectForKey:key]] dataUsingEncoding:NSUTF8StringEncoding]];
[HTTPRequestBodyParts addObject:someData];
}
//// Adding boundaries for all components in collected Above array
NSMutableData *resultingData = [NSMutableData data];
NSUInteger count = [HTTPRequestBodyParts count];
[HTTPRequestBodyParts enumerateObjectsUsingBlock:^(NSData *obj, NSUInteger idx, BOOL *stop) {
////Append data
[resultingData appendData:obj];
if (idx != count - 1)
{
////Append Boundary to Data
[resultingData appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", HTTPRequestBodyBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
}
}];
////Add data to HTTP Body data
[HTTPRequestBody appendData:resultingData];
////Append Boundary to Data HTTP Body data
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", HTTPRequestBodyBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
////Append FileName to HTTP Body data
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=%@; filename=%@\r\n", @"uploadFile",request.fileNameWithExtension] dataUsingEncoding:NSUTF8StringEncoding]];
////Append Content Type to HTTP Body data
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"Content-Type: %@\r\n\r\n",request.mimeTypeString] dataUsingEncoding:NSUTF8StringEncoding]];
////Append File Data to HTTP Body data
[HTTPRequestBody appendData:data]; /// file data
////Append Boundary to Data HTTP Body data : Closing Boundary
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", HTTPRequestBodyBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
//Above is ready for HTTP Body of URLRequest
multipartData = HTTPRequestBody;
//// Create URLRequest
mutableResponseData = [NSMutableData new];
webServiceURL = [SharedUtils trimString:webServiceURL];
urlRequest = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:webServiceURL] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:httpTimeOut];
[urlRequest setHTTPMethod:@"POST"];
[urlRequest setHTTPBody:multipartData];
[urlRequest addValue:[NSString stringWithFormat:@"%d", (int)[multipartData length]] forHTTPHeaderField:@"Content-Length"];
[urlRequest addValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", multipartBoundary] forHTTPHeaderField:@"Content-Type"];
//// add auth header If applicable
NSString *authStr = [NSString stringWithFormat:@"%@:%@", USERNAME, PASSWORD];
NSData *authData = [authStr dataUsingEncoding:NSASCIIStringEncoding];
NSString *authValue = [NSString stringWithFormat:@"Basic %@", [authData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithCarriageReturn]];
[urlRequest setValue:authValue forHTTPHeaderField:@"Authorization"];
NSString *appVersion = [SharedUtils applicationVersionNumber];
NSString *buildVersion = [SharedUtils applicationBuildNumber];
[urlRequest setValue:[NSString stringWithFormat:@"%@-%@",[SharedUtils validateStringValue:appVersion], [SharedUtils validateStringValue:buildVersion]] forHTTPHeaderField:@"AppVersion"];
答案 1 :(得分：-1)
NSData *data = FILE DATA;
NSDictionary *dictionary = FILE_SERVER_ATTRIBUTE_DICT
//Create multipart form request data.
NSDate *dt = [[NSDate alloc] initWithTimeIntervalSinceNow:0];
NSInteger timestamp = [dt timeIntervalSince1970];
NSString *HTTPRequestBodyBoundary = [NSString stringWithFormat:@"BOUNDARY-%ld-%@", (long)timestamp, [[NSProcessInfo processInfo] globallyUniqueString]]; // You could calculate a better boundary here.
multipartBoundary = HTTPRequestBodyBoundary;
// Add HTTP Body
NSMutableData *HTTPRequestBody = [NSMutableData data];
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"--%@\r\n", HTTPRequestBodyBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
// Add Key/Values to the Body
NSEnumerator *enumerator = [dictionary keyEnumerator];
NSString *key = nil;
NSMutableArray *HTTPRequestBodyParts = [NSMutableArray array];
// Collecting HTTP Request body parts
while ((key = [enumerator nextObject]))
{
NSMutableData *someData = [[NSMutableData alloc] init];
[someData appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", key] dataUsingEncoding:NSUTF8StringEncoding]];
[someData appendData:[[NSString stringWithFormat:@"%@", [dictionary objectForKey:key]] dataUsingEncoding:NSUTF8StringEncoding]];
[HTTPRequestBodyParts addObject:someData];
}
NSMutableData *resultingData = [NSMutableData data];
NSUInteger count = [HTTPRequestBodyParts count];
NSMutableString *bodyParts = [NSMutableString string];
[HTTPRequestBodyParts enumerateObjectsUsingBlock:^(NSData *obj, NSUInteger idx, BOOL *stop) {
[resultingData appendData:obj];
[bodyParts appendString:[[NSString alloc] initWithData:obj encoding:NSUTF8StringEncoding]];
if (idx != count - 1)
{
[resultingData appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", HTTPRequestBodyBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[bodyParts appendString:[NSString stringWithFormat:@"%@", [NSString stringWithFormat:@"\r\n--%@\r\n", HTTPRequestBodyBoundary]]];
}
}];
[HTTPRequestBody appendData:resultingData];
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", HTTPRequestBodyBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=%@; filename=%@\r\n", @"uploadFile",request.fileNameWithExtension] dataUsingEncoding:NSUTF8StringEncoding]];
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"Content-Type: %@\r\n\r\n",request.mimeTypeString] dataUsingEncoding:NSUTF8StringEncoding]];
[HTTPRequestBody appendData:data]; /// file data
// Add the closing -- to the POST Form
[HTTPRequestBody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", HTTPRequestBodyBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
multipartData = HTTPRequestBody;
//// server connection
mutableResponseData = [NSMutableData new];
webServiceURL = [SharedUtils trimString:webServiceURL];
urlRequest = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:webServiceURL] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:httpTimeOut];
urlRequest.URL = [NSURL URLWithString:webServiceURL];
[urlRequest setTimeoutInterval:httpTimeOut];
[urlRequest setHTTPMethod:[self nameForHTTPMethod:httpMethod]];
[urlRequest setHTTPBody:multipartData];
[urlRequest addValue:[NSString stringWithFormat:@"%d", (int)[multipartData length]] forHTTPHeaderField:@"Content-Length"];
[urlRequest addValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", multipartBoundary] forHTTPHeaderField:@"Content-Type"];
//// add auth header If applicable
NSString *authStr = [NSString stringWithFormat:@"%@:%@", USERNAME, PASSWORD];
NSData *authData = [authStr dataUsingEncoding:NSASCIIStringEncoding];
NSString *authValue = [NSString stringWithFormat:@"Basic %@", [authData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithCarriageReturn]];
[urlRequest setValue:authValue forHTTPHeaderField:@"Authorization"];
NSString *appVersion = [SharedUtils applicationVersionNumber];
NSString *buildVersion = [SharedUtils applicationBuildNumber];
[urlRequest setValue:[NSString stringWithFormat:@"%@-%@",[SharedUtils validateStringValue:appVersion], [SharedUtils validateStringValue:buildVersion]] forHTTPHeaderField:@"AppVersion"];
REST AS ASUAL用于连接和跟踪