Ios 使用 HTTPPOST 上传图像和文本

小开

最佳答案

Here's code from my app to post an image to our web server:

// Dictionary that holds post parameters. You can set your post parameters that your server accepts or programmed to accept.
NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject:[NSString stringWithString:@"1.0"] forKey:[NSString stringWithString:@"ver"]];
[_params setObject:[NSString stringWithString:@"en"] forKey:[NSString stringWithString:@"lan"]];
[_params setObject:[NSString stringWithFormat:@"%d", userId] forKey:[NSString stringWithString:@"userId"]];
[_params setObject:[NSString stringWithFormat:@"%@",title] forKey:[NSString stringWithString:@"title"]];


// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = [NSString stringWithString:@"----------V2ymHFg03ehbqgZCaKO6jy"];


// string constant for the post parameter 'file'. My server uses this name: `file`. Your's may differ
NSString* FileParamConstant = [NSString stringWithString:@"file"];


// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:@""];


// create request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[request setHTTPShouldHandleCookies:NO];
[request setTimeoutInterval:30];
[request setHTTPMethod:@"POST"];


// set Content-Type in HTTP header
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", BoundaryConstant];
[request setValue:contentType forHTTPHeaderField: @"Content-Type"];


// post body
NSMutableData *body = [NSMutableData data];


// add params (all params are strings)
for (NSString *param in _params) {
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", param] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"%@\r\n", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];
}


// add image data
NSData *imageData = UIImageJPEGRepresentation(imageToPost, 1.0);
if (imageData) {
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"image.jpg\"\r\n", FileParamConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Type: image/jpeg\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:imageData];
[body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}


[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];


// setting the body of the post to the reqeust
[request setHTTPBody:body];


// set the content-length
NSString *postLength = [NSString stringWithFormat:@"%lu",(unsigned long) [body length]];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];


// set URL
[request setURL:requestURL];

小开

XJones' answer worked like charm.

But he didn't mentioned/declared variables _params, BoundaryConstant and requestURL. So, i thought of posting that part as an add-on to his post, so that it may help others in future.

// Dictionary that holds post parameters. You can set your post parameters that your server accepts or programmed to accept.
NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject:[NSString stringWithString:@"1.0"] forKey:[NSString stringWithString:@"ver"]];
[_params setObject:[NSString stringWithString:@"en"] forKey:[NSString stringWithString:@"lan"]];
[_params setObject:[NSString stringWithFormat:@"%d", userId] forKey:[NSString stringWithString:@"userId"]];
[_params setObject:[NSString stringWithFormat:@"%@",title] forKey:[NSString stringWithString:@"title"]];


// the boundary string : a random string, that will not repeat in post data, to separate post data fields.
NSString *BoundaryConstant = [NSString stringWithString:@"----------V2ymHFg03ehbqgZCaKO6jy"];


// string constant for the post parameter 'file'. My server uses this name: `file`. Your's may differ
NSString* FileParamConstant = [NSString stringWithString:@"file"];


// the server url to which the image (or the media) is uploaded. Use your server url here
NSURL* requestURL = [NSURL URLWithString:@""];

As i mentioned earler, this is not an answer by itself, just an addon to XJones' post.

小开

For http post image and username and password sending through post method

 NSString *str=[NSString stringWithFormat:@"%@registration.php",appdel.baseUrl];
NSString *urlString = [NSString stringWithFormat:@"%@",str];


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"];


[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Disposition: form-data; name=\"file\"; filename=\"a.jpg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imgData]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];


//  parameter username


[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"username\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];


[body appendData:[userName.text dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];




//  parameter token
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"email\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];


[body appendData:[eMail.text dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];




// parameter method
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"pass\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];


[body appendData:[passWord.text dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];




//parameter method
NSLog(@"%@",countryCode);
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"country\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];


[body appendData:[countryCode dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];


// close form
[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];




// setting the body of the post to the reqeust
[request setHTTPBody:body];




NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
// NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSDictionary *dict=[NSJSONSerialization JSONObjectWithData:returnData options:NSJSONReadingMutableLeaves error:nil];
Nslog(@"%@",dict);
//

小开

Use AFNetworking; Put other parameters in the parameter dictionary and append the image data in form data.

//Upload Image Using AFNetworking


-(BOOL)uploadImageAFNetworkingWithURL:(NSString *)path andImage:(UIImage *)image andImageNameWithExtension:(NSString *)strImageName andParamDict:(NSDictionary *)dictParam andKeyForUploadingImage:(NSString *)keyUplaodImg{


NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
NSString *strError = EMPTY_STRING;


AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
[manager POST:path parameters:dictParam constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {


[formData appendPartWithFileData:imageData name:keyUplaodImg fileName:strImageName mimeType:@"image/jpeg"];


} success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"success = %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"error = %@", error);
NSLog(@"Response = %@", operation);
[strError stringByAppendingString:STR_ERR_MESSAGE];
}];
if(strError.length>0){
return NO;
}else{
return YES;
}
}

小开

Here is my similar network kit library for uploading files as multipart form:

WebRequest *request = [[WebRequest alloc] initWithPath:@"...documents/create.json"];


// optional attributes
request.delegate = delegate;
request.notificationName = @"NotificationDocumentUploaded";
request.queue = myQueue;


NSMutableData *body = [NSMutableData data];
NSString *boundary = @"TeslaSchoolProjectFormBoundary";


[body appendPartName:@"document[name]" value:@"Test" boundary:boundary];
[body appendPartName:@"document[description]" value:@"This is a description" boundary:boundary];
[body appendPartName:@"document[category]" value:@"Drama" boundary:boundary];
...
[body appendPartName:@"commit" value:@"Save" boundary:boundary];
NSData *fileData = [[NSData alloc] initWithContentsOfURL:someFileURL];
[body appendPartFile:fileName name:@"document[file]" data:fileData mimeType:mimeType boundary:boundary];
[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];


[request setHTTPBody:body];


NSString *bodyLength = [NSString stringWithFormat:@"%lu",(unsigned long)[body length]];
[request addValue:bodyLength forHTTPHeaderField:@"Content-Length"];
[request setValue:[NSString stringWithFormat:@"multipart/form-data; charset=utf-8; boundary=%@", boundary] forHTTPHeaderField:@"Content-Type"];




// optional values
[request addValue:@"gzip,deflate,sdch" forHTTPHeaderField:@"Accept-Encoding"];
[request addValue:@"max-age=0" forHTTPHeaderField:@"Cache-Control"];
[request addValue:@"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8" forHTTPHeaderField:@"Accept"];
[request addValue:@"en-US,en;q=0.8,hr;q=0.6,it;q=0.4,sk;q=0.2,sl;q=0.2,sr;q=0.2" forHTTPHeaderField:@"Accept-Language"];




[request setHTTPMethod:@"POST"];
[WebRequestProcessor process:request];

Use the delegate for notifying about uploading progress.

Use the notificationName for notifying when request has finished.

Use the queue for adding this request into your operation queue so it will be processed in right time.

小开

here's the working swift code translated from the code provided by @xjones. Thanks alot for your help mate. Yours was the only way that worked for me. I used this method to send 1 image and a another parameter to a webservice made in asp.net

                    let params = NSMutableDictionary()


let boundaryConstant  = "----------V2y2HFg03eptjbaKO0j1"


let file1ParamConstant = "file1"
params.setObject(device_id!, forKey: "deviceID")


let requestUrl = NSURL(string: "\(siteurl):\(port)/FileUpload/Upload")


let request = NSMutableURLRequest()


request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalCacheData
request.HTTPShouldHandleCookies=false
request.timeoutInterval = 30
request.HTTPMethod = "POST"


let contentType = "multipart/form-data; boundary=\(boundaryConstant)"


request.setValue(contentType, forHTTPHeaderField: "Content-Type")


let body = NSMutableData()


// parameters


for param in params {


body.appendData("--\(boundaryConstant)\r\n" .dataUsingEncoding(NSUTF8StringEncoding)! )
body.appendData("Content-Disposition: form-data; name=\"\(param)\"\r\n\r\n" .dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("\(param.value)\r\n" .dataUsingEncoding(NSUTF8StringEncoding)!)


}
// images


// image begin
body.appendData("--\(boundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)


body.appendData("Content-Disposition: form-data; name=\"\(file1ParamConstant)\"; filename=\"image.jpg\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData("Content-Type: image/jpeg\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)


body.appendData(passportImageData)
body.appendData("\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)


// image end






body.appendData("--\(boundaryConstant)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)


request.HTTPBody  = body
let postLength = "\(body.length)"
request.setValue(postLength, forHTTPHeaderField: "Content-Length")
request.URL = requestUrl


var serverResponse = NSString()


let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in


if error != nil
{
print("error=\(error)")
return
}




print("response = \(response)")




let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("responseString = \(responseString!)")
serverResponse = responseString!




}


task.resume()

小开

I can show you an example of uploading a .txt file to a server with NSMutableURLRequest and NSURLSessionUploadTask with help of a php script.

-(void)uploadFileToServer : (NSString *) filePath
{
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://YourURL.com/YourphpScript.php"]];
[request setHTTPMethod:@"POST"];
[request addValue:@"File Name" forHTTPHeaderField:@"FileName"];
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration:defaultConfigObject];


NSURLSessionUploadTask* uploadTask = [defaultSession uploadTaskWithRequest:request fromFile:[NSURL URLWithString:filePath] completionHandler:^(NSData *data, NSURLResponse *response, NSError *error)
{
NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
if (error || [httpResponse statusCode]!=202)
{


//Error
}
else
{
//Success
}
[defaultSession invalidateAndCancel];
}];
[uploadTask resume];
}

php Script

<?php
$request_body = @file_get_contents('php://input');
foreach (getallheaders() as $name => $value)
{
if ($FileName=="FileName")
{
$header=$value;
break;
}
}
$uploadedDir = "directory/";
@mkdir($uploadedDir);
file_put_contents($uploadedDir."/".$FileName.".txt",
$request_body.PHP_EOL, FILE_APPEND);
header('X-PHP-Response-Code: 202', true, 202);
?>

小开

Here is a Swift version. Note that if you do not want to send form data it is still important to send the empty form boundary. Flask in particular expects form data followed by file data and will not populate request.files without the first boundary.

  let composedData = NSMutableData()


// Set content type header
let BoundaryConstant = "--------------------------3d74a90a3bfb8696"
let contentType = "multipart/form-data; boundary=\(BoundaryConstant)"
request.setValue(contentType, forHTTPHeaderField: "Content-Type")


// Empty form boundary
composedData.appendData("--\(BoundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)


// Build multipart form to send image
composedData.appendData("--\(BoundaryConstant)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
composedData.appendData("Content-Disposition: form-data; name=\"file\"; filename=\"image.jpg\"\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
composedData.appendData("Content-Type: image/jpeg\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
composedData.appendData(rawData!)
composedData.appendData("\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
composedData.appendData("--\(BoundaryConstant)--\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)


request.HTTPBody = composedData


// Get content length
let length = "\(composedData.length)"
request.setValue(length, forHTTPHeaderField: "Content-Length")

小开

Upload image with form data using NSURLConnection class in Swift 2.2:

    func uploadImage(){
let imageData = UIImagePNGRepresentation(UIImage(named: "dexter.jpg")!)


if imageData != nil{
let str = "https://staging.mywebsite.com/V2.9/uploadfile"
let request = NSMutableURLRequest(URL: NSURL(string:str)!)
request.HTTPMethod = "POST"


let boundary = NSString(format: "---------------------------14737809831466499882746641449")


let contentType = NSString(format: "multipart/form-data; boundary=%@",boundary)
request.addValue(contentType as String, forHTTPHeaderField: "Content-Type")


let body = NSMutableData()


// append image data to body
body.appendData(NSString(format: "\r\n--%@\r\n", boundary).dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(NSString(format:"Content-Disposition: form-data; name=\"file\"; filename=\"img.jpg\"\\r\n").dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(NSString(format: "Content-Type: application/octet-stream\r\n\r\n").dataUsingEncoding(NSUTF8StringEncoding)!)
body.appendData(imageData!)
body.appendData(NSString(format: "\r\n--%@\r\n", boundary).dataUsingEncoding(NSUTF8StringEncoding)!)


request.HTTPBody = body


do {
let returnData = try NSURLConnection.sendSynchronousRequest(request, returningResponse: nil)
let returnString = NSString(data: returnData, encoding: NSUTF8StringEncoding)
print("returnString = \(returnString!)")
}
catch let  error as NSError {
print(error.description)
}
}
}

Note: Always use sendAsynchronousRequest method instead of sendSynchronousRequest for uploading/downloading data to avoid blocking main thread. Here I used sendSynchronousRequest for testing purpose only.

小开

use below code. it will work fine for me.


+(void) sendHttpRequestWithArrayContent:(NSMutableArray *) array
ToUrl:(NSString *) strUrl withHttpMethod:(NSString *) strMethod
withBlock:(dictionary)block
{
if (![Utility isConnectionAvailableWithAlert:TRUE])
{
[Utility showAlertWithTitle:@"" andMessage:@"No internet connection available"];
}




NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;


[request setURL:[NSURL URLWithString:strUrl]];
[request setTimeoutInterval:120.0];
[request setHTTPMethod:strMethod];


NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];


NSMutableData *body=[[NSMutableData alloc]init];


for (NSMutableDictionary *dict in array)
{
if ([[dict valueForKey:[[dict allKeys]objectAtIndex:0]] isKindOfClass:[NSString class]])
{
[body appendData:[self contentDataFormStringWithValue:[dict valueForKey:[[dict allKeys]objectAtIndex:0]] withKey:[[dict allKeys]objectAtIndex:0]]];
}
else if ([[dict valueForKey:[[dict allKeys]objectAtIndex:0]] isKindOfClass:[UIImage class]])
{
[body appendData:[self contentDataFormImage:[dict valueForKey:[[dict allKeys]objectAtIndex:0]] withKey:[[dict allKeys]objectAtIndex:0]]];
}
else if ([[dict valueForKey:[[dict allKeys]objectAtIndex:0]] isKindOfClass:[NSMutableDictionary class]])
{
[body appendData:[self contentDataFormStringWithValue:[dict valueForKey:[[dict allKeys]objectAtIndex:0]] withKey:[[dict allKeys]objectAtIndex:0]]];
}
else
{
NSMutableData *dataBody = [NSMutableData data];
[dataBody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[dataBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"ipodfile.jpg\"\r\n",@"image"] dataUsingEncoding:NSUTF8StringEncoding]];
[dataBody appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];


[dataBody appendData:[dict valueForKey:[[dict allKeys]objectAtIndex:0]]];


[body appendData:dataBody];
}
}


[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];


[request setHTTPBody:body];


[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError)
{
if (!data) {
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
[dict setObject:[NSString stringWithFormat:@"%@",SomethingWentWrong] forKey:@"error"];
block(dict);
return ;
}
NSError *error = nil;
// NSString *str=[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
NSLog(@"%@",dict);
if (!dict) {
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
[dict setObject:ServerResponceError forKey:@"error"];
block(dict);
return ;
}
block(dict);


}];


}
+(NSMutableData*) contentDataFormStringWithValue:(NSString*)strValue
withKey:(NSString *) key
{
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSMutableData *data=[[NSMutableData alloc]init];
[data appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[data appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key] dataUsingEncoding:NSUTF8StringEncoding]];
[data appendData:[[NSString stringWithFormat:@"%@",strValue] dataUsingEncoding:NSUTF8StringEncoding]];  // title
return data;
}


+(NSMutableData*) contentDataFormImage:(UIImage*)image withKey:
(NSString *) key
{
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"ipodfile.jpg\"\r\n",key] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
NSData *imageData=UIImageJPEGRepresentation(image, 0.40);
[body appendData:imageData];


return body;
}