I need to send a pic to a server via HTTP post, but I am getting a response from server saying that I used POST+GET. Any ideas what I did wrong? Here is my code.
- (void)sendMessagesWithImg
{
NSMutableData *body = [NSMutableData data];
UIImage *imgColor = [UIImage imageNamed:#"imgbar.png"];
UIImage * imageToPost = [[UIImage alloc] init];
imageToPost = [self convertImageToGrayScale:imgColor];
// add image data
NSData *imageData = UIImageJPEGRepresentation(imageToPost, 1.0);
if (imageData) {
[body appendData:imageData];
}
[imgView setImage:imageToPost];
[body appendData:imageData];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"URL"]];
[request setHTTPBody:body];
[request setHTTPMethod:#"POST"];
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[conn start];
}
Server response
More than the maximum number of request parameters (GET plus POST) for
a single request ([512]) were detected.
You append the imageData for two times. Delete the second.
[body appendData:imageData];
In any case try also with this:
// set the content-length
NSString *postLength = [NSString stringWithFormat:#"%d", [body length]];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
and read this post..you have to attach others parameters probably:
ios Upload Image and Text using HTTP POST
Related
I'm working on uploading an image to a server from last two days as there are tons of questions about uploading an image through AFNetworking and NSURLSession and other methods of uploading all I'm asking is I didn't found a single answer explaining the whole concept about how the things work and what is going on under the hood I searched youtube also all the stuff are available in Swift and trust me no Explanation at all and from my result I found this answer is something that looks familiar to me
//Init the NSURLSession with a configuration
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];
//Create an URLRequest
NSURL *url = [NSURL URLWithString:#"yourURL"];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
//Create POST Params and add it to HTTPBody
NSString *params = #"api_key=APIKEY&email=example#example.com&password=password";
[urlRequest setHTTPMethod:#"POST"];
[urlRequest setHTTPBody:[params dataUsingEncoding:NSUTF8StringEncoding]];
//Create task
NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:urlRequest completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
//Handle your response here
}];
[dataTask resume];
and also the most popular answer about this topic is by User XJones is:-
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:#"%d", [body length]];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
// set URL
[request setURL:requestURL];
But my point is I'm learning on my own and it is very difficult to understand for the beginner without explanation so All I'm asking is an explanation, an Detail explanation about the whole process if someone have a hard time to spend on this question because believe it or not I found this the hardest topic till now because the main reason is there are no tutorials about the whole process and also no explanation at all for beginners if someone can a step now and explain the concept it'll be easier to the students who will learn tomorrow. So anybody who can explain this in detail and how the uploading process works and some steps for the reference will be greatly appreciated.
Note : Consider I Have an API and a Key "image" .
here we gonna look at image uploading along with some **parameters because most of time we upload image along with some parameters such as userId.
Before going deep into our topic let me provide the code for doing the stuff source,All the details we gonna see below are from some other stack overflow threads and some from other sites,i'll provide all the links for your reference.
-(void)callApiWithParameters:(NSDictionary *)inputParameter images:(NSArray *)image imageParamters:(NSArray *)FileParamConstant{
//1
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setHTTPShouldHandleCookies:NO];
[request setTimeoutInterval:30];
[request setHTTPMethod:#"POST"];
//2
NSString *boundary = #"------CLABoundaryGOKUL";
//3
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary];
[request setValue:contentType forHTTPHeaderField: #"Content-Type"];
//4
NSMutableData *body = [NSMutableData data];
for (NSString *key in inputParameter) {
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"\r\n\r\n", key] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"%#\r\n", [inputParameter objectForKey:key]] dataUsingEncoding:NSUTF8StringEncoding]];
}
for (int i = 0; i < image.count; i++) {
NSData *imageDatasss = UIImagePNGRepresentation(image[i]);
if (imageDatasss)
{
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"; filename=\"image.jpg\"\r\n", FileParamConstant[i]] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type:image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:imageDatasss];
[body appendData:[[NSString stringWithFormat:#"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
}
[body appendData:[[NSString stringWithFormat:#"--%#--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
//5
[request setHTTPBody:body];
//6
[request setURL:[NSURL URLWithString:#"http://changeThisWithYourbaseURL?"]];//Eg:#"http://dev1.com/PTA_dev/webservice/webservice.php?"
//7
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
//8
if ([httpResponse statusCode] == 200) {
NSDictionary * APIResult =[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
NSLog(#"Response of %#: %#",[inputParameter valueForKey:#"service"],APIResult);
}else{
//9
NSLog(#"%#",error.localizedDescription);
}
}];
}
NOTE: Since it is a broad topic i have provided documentation link for detail info.
We are using ** NSMutableURLRequest** instead of ** NSURLRequest** because we gonna append some data to it.if you need some deep clarification about mutable url request go through this documentation.
setHTTPShouldHandleCookies here we have to decide whether we are going to use cookies or not.To know more about visit
setTimeoutInterval this helps to set a time limit to url request.Add time interval in seconds after the given time,request will be terminated.
setHTTPMethod there are many methods.But we use GET and POST methods in many cases.Difference between POST and GET is here and here
Boundary helps in separating the parameters from each other,so that the server can identify them.The boundary may be anything as your wish feel free to edit it.
Here we use multipart/form-data; boundary= as content type.To know why we are going to this content type look into this thread.
NSMutableData * body we gonna append all the parameters and values to this data and later setHTTPBody to the UrlRequest.
If this is how we call the 'callApiWithParameters' method
- (IBAction)Done:(id)sender{
NSDictionary * inputParameters = [NSDictionary dictionaryWithObjectsAndKeys:
#"1",#"user_id" ,
"XXX",#"name" ,
nil];
NSArray * image = [NSArray arrayWithObjects:[UIImage imageNamed:#"Test"],[UIImage imageNamed:#"Test1"],nil];
NSArray * imageParameters = [NSArray arrayWithObjects:#"img_one",#"img_two",nil];
[self callApiWithParameters:inputParameters images:image imageParamters:imageParameters];
}
then the data (i.e body) will look like this
Content-Type=multipart/form-data; boundary=------CLABoundaryGOKUL
--------CLABoundaryGOKUL
Content-Disposition: form-data; name=user_id
1
--------CLABoundaryGOKUL
Content-Disposition: form-data; name=name
XXX
--------CLABoundaryGOKUL
Content-Disposition: form-data; name=img_one; filename=image.jpg
Content-Type:image/jpeg
//First image data appended here
--------CLABoundaryGOKUL
Content-Disposition: form-data; name=img_two; filename=image.jpg
Content-Type:image/jpeg
//Second image data appended here.
The above give data will clearly explain what going on,all the parameters and keys have been append in the data Here you can find more details about sending multipart/form.
Now simply add the above data to request by [request setHTTPBody:body];
setURL in this method add your base url of your app.
Now all we need to do is make a connection to the server and send the request.Here we use NSURLConnection to send request.Description about NSURLConnection Loads the data for a URL request and executes a handler block on an operation queue when the request completes or fails.
statusCode which helps to find out whether we got successful response from server. If 200 means OK, 500 means Internal Server Error, etc.. more details here .
Handle the error in else case.
FYI I have explained what i can,refer the links for better understanding.
EDIT:
Just change the name in imageParamater array,To satisfy your requirement changed img_one & img_two with image.
- (IBAction)Done:(id)sender{
//Change input parameters as per your requirement.
NSDictionary * inputParameters = [NSDictionary dictionaryWithObjectsAndKeys:
#"1",#"user_id" ,
"XXX",#"name" ,
nil];
NSArray * image = [NSArray arrayWithObjects:[UIImage imageNamed:#"Test"],nil]; //Change Test with your image name
NSArray * imageParameters = [NSArray arrayWithObjects:#"image",nil];//Added image as a key.
[self callApiWithParameters:inputParameters images:image imageParamters:imageParameters];
}
and Change Point 6 with your example base URL,
//6
[request setURL:[NSURL URLWithString:#"http://google.com/files/upload.php?"]];
I think it's Helpful for you...
- (void)sendImageToServer
{
UIImage *yourImage= [UIImage imageNamed:#"image.png"];
NSData *imageData = UIImagePNGRepresentation(yourImage);
NSString *base64 = [imageData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSString *strImage = [NSString stringWithFormat:#"data:image/png;base64,%#",base64];
NSMutableDictionary *dic = [[NSMutableDictionary alloc] initWithObjectsAndKeys:strImage,#"image", nil];
NSError * err;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dic options:0 error:&err];
NSString *UserProfileInRequest = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
NSData *data=[UserProfileInRequest dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *len = [NSString stringWithFormat:#"%ld", (unsigned long)[data length]];
// Init the URLRequest
NSMutableURLRequest *req = [[NSMutableURLRequest alloc] init];
[req setURL:[NSURL URLWithString:#"http://YOUR_URL"]];
[req setHTTPMethod:#"POST"];
[req setValue:len forHTTPHeaderField:#"Content-Type"];
[req setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
[req setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[req setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[req setHTTPBody:data];
NSURLSession *session = [NSURLSession sharedSession];
[[session dataTaskWithRequest:req completionHandler:^(NSData *dt, NSURLResponse *response, NSError *err){
//Response Data
NSMutableDictionary *dic = [NSJSONSerialization JSONObjectWithData:dt options:kNilOptions error:&err];
NSLog(#"%#", [dic description]);
}]resume];
}
Use AFNetworking For this task which will give very easy and reliable solution.
In my iOS app I am posting json string to server using NSURLConnection like this.
post_string = #"{"function":"getHuddleDetails", "parameters": {"user_id": "167","location_id": "71","huddle_id": "328","checkin_id": "1287"},"token":""}"
-(void)myServerRequests:(NSString *)post_string{
NSData *postData = [post_string dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"http://www.myServerURl.com/jsonpost"]];
[request setTimeoutInterval:100];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded;charset=UTF-8" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if (conn) {
webData = [[NSMutableData alloc]init];
}
}
And posting multipart/form-data (not JSON) using NSURLSession using below code
-(void)myFunction:(NSString *)user_name paswd:(NSString *)pass_word {
NSString *boundary = [self boundaryString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://www.myServerURl.com/formpost"]];
[request setHTTPMethod:#"POST"];
[request addValue:[NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary] forHTTPHeaderField:#"Content-Type"];
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration];
NSMutableData *postbody = [NSMutableData data];
[postbody appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"username\"\r\n\r\n%#", user_name] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"password\"\r\n\r\n%#", pass_word] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
NSURLSessionUploadTask *task = [session uploadTaskWithRequest:request fromData:postbody completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
NSAssert(!error, #"%s: uploadTaskWithRequest error: %#", __FUNCTION__, error);
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] ;
}];
[task resume];
}
This works perfectly fine with NSURLSession, but when I tried to post json string (converted it to NSDATA and posted using NSURLSession), it is not working.
Why it happens ?
Thanks in advance
If you want to send JSON to a server you should set the content type accordingly to application/json and your content is actually just that: the JSON encoded preferably in UTF-8.
In your method myServerRequests: you set content type application/x-www-form-urlencoded - but you don't setup the corresponding content correctly. How to do this can be read here: URL-encoded form data. Additionally, specifying a charset parameter has no effect at all.
In case you want to send a string parameter for a application/x-www-form-urlencoded content type, you should also not use a lossy conversion. Instead use UTF-8. Note that NSStrings length returns the number of UTF-16 code points - which is not the same as the number of bytes of an UTF-8 encoded string.
Recap:
Don't use application/x-www-form-urlencoded content type. Instead:
Content-Type = application/json
Content-Length = <length in bytes of the UTF-8 encoded JSON>
When you fix these issues, the request should be OK.
When using a multipart/form-data request I strongly recommend to use a network library. Doing this by hand is too error prone and you would need to read at least 300 RFCs to know that you are doing it correctly ;)
All,
I just want to upload a single screenshot from my App to a server directory. The screenshot code works good as I can send it via SMS in another routine and it compiles just fine, but I don't see the image in the server directory using the code below.
I just can't get it to work. I ONLY care to upload the screenshotimage variable...the rest of the data is not important to me. Please Help!!!
- (IBAction)sendToServer {
UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *screenshotimage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imageData = UIImageJPEGRepresentation(screenshotimage,0.2);
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"https://www.nameofmywebsite.com/temp/image_from_payer_app"]];
[request setHTTPMethod:#"POST"];
NSString *boundary = #"xxxxBoundaryStringxxxx";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary];
[request addValue:contentType forHTTPHeaderField:#"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Disposition: form-data; name=\"userfile\"; filename=\"iphoneimage.jpg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
[request addValue:[NSString stringWithFormat:#"%lu", (unsigned long)[imageData length]] forHTTPHeaderField:#"Content-Length"];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(#"%#", returnString);
}
Here is my new code. I am only trying to send a single image file (which is a screenshot of the app) to a server. Can someone please verify that the client code is correct then I can just focus on the server side to see why the file is not being deposited on the server?
- (IBAction)sendToServer {
UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *screenshotimage = UIGraphicsGetImageFromCurrentImageContext();
NSData *imageData = UIImageJPEGRepresentation(screenshotimage,0.2);
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://mywebsite.com/"]];
[request setHTTPMethod:#"POST"];
appendData:[NSData dataWithData:imageData];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(#"%#", returnString);
UIGraphicsEndImageContext();
NSURLConnection *conn = [[NSURLConnection alloc]initWithRequest:request delegate:self];
if(conn) {
NSLog(#"Connection Successful");
} else {
NSLog(#"Connection could not be made");
}
}
Your client side code is seems ok. There might be some problem at your server side. Your server might unable to retrieve the image.
We have a PHP web service that attaches an image to an email since it is collecting the image in a global file array. The method of transfer of the data is the POST method . I am sending the image but it is not getting collected in the web service with the POST method. Can someone tell me if the problem is in the web service or in my code.
Below is the code i am using to send the image.
NSString *tempString = [NSString stringWithFormat:#"sub1_fname=%#&sub1_lname=%#&sub1_email=%#&sub1_phone=%#&sub1_address=%#&sub1_city=%#&sub1_zip=%#&sub2_storage=%#&sub2_boxes=%#&sub2_oneman=%#&sub2_twoman=%#&sub2_heavy=%#&sub2_comments=%#&sub3_findus=%#&sub3_word=%#&sub3_praise=%#",f31fname,f31lname,f31email,f31phone,f31address,f31city,f31zip,f32storage,f32boxes,f32oneman,f32twoman,f32heavy,f32comments,f33findus,f33word,f33praise];
UIImage *image = [UIImage imageNamed:#"textlogo.png"];
NSMutableURLRequest *request =[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:#"http://ommultiengg.com/form/form3.php"]];
[request setHTTPMethod:#"POST"];
NSString *postString =[NSString stringWithFormat:#"{\"sub2_image\":\"%#\"}",image];//post the image
[request setValue:[NSString
stringWithFormat:#"%lu", (unsigned long)[postString length]]
forHTTPHeaderField:#"Content-length"];//get image length
[request setHTTPBody:[postString dataUsingEncoding:NSUTF8StringEncoding]];
[request setValue:#"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:[tempString dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];
Using following code, you can pass parameters as well as with image data.
NSString *urlString = [NSString stringWithFormat:#"http://myAPIName/MethodName/test.php&username=%#&password=%#&image=%#&answer=%#&question_id=%#", username, password, imageName, answer, questionID];
NSLog(#"MyURL: %#",urlString);
urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"POST"];
NSString *boundary = #"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
NSString *str=[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"SourceImage\"; filename=\"Image_%#\"\r\n",[imagePath lastPathComponent]];
[body appendData:[[NSString stringWithString:str] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithContentsOfFile:imagePath]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
first of all I am sorry for this kind of questions, I am a little confused with Objective C,
the function I am trying to write is to upload image to a server using web service, I have already dine it using C# but it I cann't figuir out what is the problem in my objective-C code
the C# code is:
using(var wb=new WebClient){
var Data=new NameValueCollection();
data["image"]=base64(fileName)/*base64 is a function to convert the image with"file name" to base64 string*/
Uri myUri=new Uri("http://localHost:8080/test2/sss/users/1/uploadImage");
var respose=wb.UploadValues(myUri,"Post",Data)
}
the Objective-C code I am trying to use:
NSData* data = UIImageJPEGRepresentation(theImageView.image, 1.0f);
[Base64 initialize];
NSString *strEncoded = [Base64 encode:data];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setHTTPMethod:#"POST"];
[request setURL:[NSURL URLWithString:#"http://localHost:8080/test2/sss/users/1/uploadImage"]];
NSData* image= [strEncoded dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES ];
NSLog(#"%#",strEncoded);
[request setHTTPBody:image];
(void)[NSURLConnection connectionWithRequest:request delegate:self];
sorry again but the problem is that I don't Know if I am matching the parameters right
You don't have to base64 encode the date, but use the right content type for your request. I didn't understand your problem, but here is my working method:
- (NSURLConnection *)connectionByFormUploadingData:(NSData *)data toURL:(NSURL *)url withFileName:(NSString *)fileName forFieldName:(NSString *)fieldName delegate:(id)delegate {
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setHTTPMethod:#"POST"];
NSString *boundary = [[NSProcessInfo processInfo] globallyUniqueString];
[request addValue:[NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary] forHTTPHeaderField:#"Content-Type"];
NSMutableData *postData = [[NSMutableData alloc] initWithData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"; filename=\"%#\"\r\n\r\n", fieldName, fileName ?: #"empty_file_name"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:data];
[postData appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:postData];
return [[NSURLConnection alloc] initWithRequest:request delegate:delegate startImmediately:NO];
}
EDIT
Assumed you use PHP, you save the data like this:
move_uploaded_file($_FILES['fieldName']['tmp_name'], $upload_dir.'/'.$_FILES['fieldName']['name']);
EDIT II
The last boundary in the HTTP body must be terminated using two hyphens as described in RFC1341, thanks to CouchDeveloper for this improvement!
Try encoding your data a bit differently:
[strEncoded dataUsingEncoding:NSUTF8StringEncoding]