मैं आईफोन के साथ एक सर्वर पर एक फोटो कैसे अपलोड कर सकता हूं?

Question

मैं एक आईफोन ऐप लिख रहा हूं जो एक फोटो लेता है और फिर उसे सर्वर पर अपलोड करता है। मैं कोको के साथ एक सर्वर में एक फोटो कैसे अपलोड करूं? मुझे लगता है कि मैं कहीं NSNrl का उपयोग करता हूं।

धन्यवाद!

Answer 1

NSURLRequest बनाएं और फिर अपने सर्वर पर इसे भेजने के लिए NSURLConnection का उपयोग करें।

Answer 2

हैडर:

@interface EPUploader : NSObject { 
    NSURL *serverURL; 
    NSString *filePath; 
    id delegate; 
    SEL doneSelector; 
    SEL errorSelector; 

    BOOL uploadDidSucceed; 
} 

- (id)initWithURL: (NSURL *)serverURL 
      filePath: (NSString *)filePath 
      delegate: (id)delegate 
     doneSelector: (SEL)doneSelector 
     errorSelector: (SEL)errorSelector; 

- (NSString *)filePath; 

@end 

मुख्य:

#import "EPUploader.h" 
#import <zlib.h> 

static NSString * const BOUNDRY = @"0xKhTmLbOuNdArY"; 
static NSString * const FORM_FLE_INPUT = @"uploaded"; 

#define ASSERT(x) NSAssert(x, @"") 

@interface EPUploader (Private) 

- (void)upload; 
- (NSURLRequest *)postRequestWithURL: (NSURL *)url 
          boundry: (NSString *)boundry 
           data: (NSData *)data; 

- (NSData *)compress: (NSData *)data; 
- (void)uploadSucceeded: (BOOL)success; 
- (void)connectionDidFinishLoading:(NSURLConnection *)connection; 

@end 

@implementation EPUploader 



/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader initWithURL:filePath:delegate:doneSelector:errorSelector:] -- 
* 
*  Initializer. Kicks off the upload. Note that upload will happen on a 
*  separate thread. 
* 
* Results: 
*  An instance of Uploader. 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (id)initWithURL: (NSURL *)aServerURL // IN 
     filePath: (NSString *)aFilePath // IN 
     delegate: (id)aDelegate   // IN 
    doneSelector: (SEL)aDoneSelector // IN 
    errorSelector: (SEL)anErrorSelector // IN 
{ 
    if ((self = [super init])) { 
     ASSERT(aServerURL); 
     ASSERT(aFilePath); 
     ASSERT(aDelegate); 
     ASSERT(aDoneSelector); 
     ASSERT(anErrorSelector); 

     serverURL = [aServerURL retain]; 
     filePath = [aFilePath retain]; 
     delegate = [aDelegate retain]; 
     doneSelector = aDoneSelector; 
     errorSelector = anErrorSelector; 

     [self upload]; 
    } 
    return self; 
} 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader dealloc] -- 
* 
*  Destructor. 
* 
* Results: 
*  None 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (void)dealloc 
{ 
    [serverURL release]; 
    serverURL = nil; 
    [filePath release]; 
    filePath = nil; 
    [delegate release]; 
    delegate = nil; 
    doneSelector = NULL; 
    errorSelector = NULL; 

    [super dealloc]; 
} 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader filePath] -- 
* 
*  Gets the path of the file this object is uploading. 
* 
* Results: 
*  Path to the upload file. 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (NSString *)filePath 
{ 
    return filePath; 
} 


@end // Uploader 


@implementation EPUploader (Private) 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader(Private) upload] -- 
* 
*  Uploads the given file. The file is compressed before beign uploaded. 
*  The data is uploaded using an HTTP POST command. 
* 
* Results: 
*  None 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (void)upload 
{ 
    NSData *data = [NSData dataWithContentsOfFile:filePath]; 
    ASSERT(data); 
    if (!data) { 
     [self uploadSucceeded:NO]; 
     return; 
    } 
    if ([data length] == 0) { 
     // There's no data, treat this the same as no file. 
     [self uploadSucceeded:YES]; 
     return; 
    } 

// NSData *compressedData = [self compress:data]; 
// ASSERT(compressedData && [compressedData length] != 0); 
// if (!compressedData || [compressedData length] == 0) { 
//  [self uploadSucceeded:NO]; 
//  return; 
// } 

    NSURLRequest *urlRequest = [self postRequestWithURL:serverURL 
               boundry:BOUNDRY 
                data:data]; 
    if (!urlRequest) { 
     [self uploadSucceeded:NO]; 
     return; 
    } 

    NSURLConnection * connection = 
    [[NSURLConnection alloc] initWithRequest:urlRequest delegate:self]; 
    if (!connection) { 
     [self uploadSucceeded:NO]; 
    } 

    // Now wait for the URL connection to call us back. 
} 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader(Private) postRequestWithURL:boundry:data:] -- 
* 
*  Creates a HTML POST request. 
* 
* Results: 
*  The HTML POST request. 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (NSURLRequest *)postRequestWithURL: (NSURL *)url  // IN 
          boundry: (NSString *)boundry // IN 
           data: (NSData *)data  // IN 
{ 
    // from http://www.cocoadev.com/index.pl?HTTPFileUpload 
    NSMutableURLRequest *urlRequest = 
    [NSMutableURLRequest requestWithURL:url]; 
    [urlRequest setHTTPMethod:@"POST"]; 
    [urlRequest setValue: 
    [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundry] 
     forHTTPHeaderField:@"Content-Type"]; 

    NSMutableData *postData = 
    [NSMutableData dataWithCapacity:[data length] + 512]; 
    [postData appendData: 
    [[NSString stringWithFormat:@"--%@\r\n", boundry] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [postData appendData: 
    [[NSString stringWithFormat: 
     @"Content-Disposition: form-data; name=\"%@\"; filename=\"file.bin\"\r\n\r\n", FORM_FLE_INPUT] 
     dataUsingEncoding:NSUTF8StringEncoding]]; 
    [postData appendData:data]; 
    [postData appendData: 
    [[NSString stringWithFormat:@"\r\n--%@--\r\n", boundry] dataUsingEncoding:NSUTF8StringEncoding]]; 

    [urlRequest setHTTPBody:postData]; 
    return urlRequest; 
} 

/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader(Private) compress:] -- 
* 
*  Uses zlib to compress the given data. 
* 
* Results: 
*  The compressed data as a NSData object. 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (NSData *)compress: (NSData *)data // IN 
{ 
    if (!data || [data length] == 0) 
     return nil; 

    // zlib compress doc says destSize must be 1% + 12 bytes greater than source. 
    uLong destSize = [data length] * 1.001 + 12; 
    NSMutableData *destData = [NSMutableData dataWithLength:destSize]; 

    int error = compress([destData mutableBytes], 
         &destSize, 
         [data bytes], 
         [data length]); 
    if (error != Z_OK) { 
     NSLog(@"%s: self:0x%p, zlib error on compress:%d\n",__func__, self, error); 
     return nil; 
    } 

    [destData setLength:destSize]; 
    return destData; 
} 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader(Private) uploadSucceeded:] -- 
* 
*  Used to notify the delegate that the upload did or did not succeed. 
* 
* Results: 
*  None 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (void)uploadSucceeded: (BOOL)success // IN 
{ 
    [delegate performSelector:success ? doneSelector : errorSelector 
        withObject:self]; 
} 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader(Private) connectionDidFinishLoading:] -- 
* 
*  Called when the upload is complete. We judge the success of the upload 
*  based on the reply we get from the server. 
* 
* Results: 
*  None 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (void)connectionDidFinishLoading:(NSURLConnection *)connection // IN 
{ 
    NSLog(@"%s: self:0x%p\n", __func__, self); 
    [connection release]; 
    [self uploadSucceeded:uploadDidSucceed]; 
} 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader(Private) connection:didFailWithError:] -- 
* 
*  Called when the upload failed (probably due to a lack of network 
*  connection). 
* 
* Results: 
*  None 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (void)connection:(NSURLConnection *)connection // IN 
    didFailWithError:(NSError *)error    // IN 
{ 
    NSLog(@"%s: self:0x%p, connection error:%s\n", 
      __func__, self, [[error description] UTF8String]); 
    [connection release]; 
    [self uploadSucceeded:NO]; 
} 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader(Private) connection:didReceiveResponse:] -- 
* 
*  Called as we get responses from the server. 
* 
* Results: 
*  None 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

-(void)  connection:(NSURLConnection *)connection // IN 
     didReceiveResponse:(NSURLResponse *)response  // IN 
{ 
    NSLog(@"%s: self:0x%p\n", __func__, self); 
} 


/* 
*----------------------------------------------------------------------------- 
* 
* -[Uploader(Private) connection:didReceiveData:] -- 
* 
*  Called when we have data from the server. We expect the server to reply 
*  with a "YES" if the upload succeeded or "NO" if it did not. 
* 
* Results: 
*  None 
* 
* Side effects: 
*  None 
* 
*----------------------------------------------------------------------------- 
*/ 

- (void)connection:(NSURLConnection *)connection // IN 
    didReceiveData:(NSData *)data    // IN 
{ 
    NSLog(@"%s: self:0x%p\n", __func__, self); 

    NSString *reply = [[[NSString alloc] initWithData:data 
              encoding:NSUTF8StringEncoding] 
         autorelease]; 
    NSLog(@"%s: data: %s\n", __func__, [reply UTF8String]); 

    if ([reply hasPrefix:@"YES"]) { 
     uploadDidSucceed = YES; 
    } 
} 


@end 

उपयोग:

 [[EPUploader alloc] initWithURL:[NSURL URLWithString:@"http://yourserver.com/uploadDB.php"] 
                filePath:@"path/to/some/file" 
                delegate:self 
               doneSelector:@selector(onUploadDone:) 
               errorSelector:@selector(onUploadError:)];  

Answer 3

लगता Three20 पुस्तकालय की तरह HTTP सर्वर के लिए छवियों को पोस्ट करने के लिए समर्थन हासिल है।

TTURLRequest.m

देखें और यह Apache 2.0 लाइसेंस के तहत जारी की है।

Answer 4

आशा है कि कोड स्निपेट आपके लिए काम करेगा। मैंने छवि के लिए प्रत्येक बार अद्वितीय नाम प्राप्त करने के लिए NSDateFormatter और NSDate का उपयोग किया है।

नोट: 'ImageUploadURL' स्ट्रिंग # बेस यूआरएल के साथ परिभाषित है, आपको इसे अपने सर्वर यूआरएल से प्रतिस्थापित करने की आवश्यकता है।

छवि नाम के लिए // दिनांक स्वरूप ...

NSDateFormatter *format = [[NSDateFormatter alloc] init]; 
    [format setDateFormat:@"yyyyMMddHHmmss"]; 

NSDate *now = [[NSDate alloc] init]; 

NSString *imageName = [NSString stringWithFormat:@"Image_%@", [format stringFromDate:now]]; 

[now release]; 
[format release]; 

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; 
[request setURL:[NSURL URLWithString:ImageUploadURL]]; 
[request setHTTPMethod:@"POST"]; 

/* 
Set Header and content type of your request. 
*/ 
NSString *boundary = [NSString stringWithString:@"---------------------------Boundary Line---------------------------"]; 
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary]; 
[request addValue:contentType forHTTPHeaderField: @"Content-Type"]; 

/* 
now lets create the body of the request. 
*/ 
NSMutableData *body = [NSMutableData data]; 
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];  
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@.jpg\"\r\n", imageName] dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:[NSData dataWithData:UIImageJPEGRepresentation(image, 90)]]; 
[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:[[NSString stringWithFormat:@"geotag=%@&", [self _currentLocationMetadata]] dataUsingEncoding:NSUTF8StringEncoding]]; 
[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 

// set body with request. 
[request setHTTPBody:body]; 
[request addValue:[NSString stringWithFormat:@"%d", [body length]] forHTTPHeaderField:@"Content-Length"]; 

// now lets make the connection to the web 
[NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 

Answer 5

- (void) uploadImage :(NSString *) strRequest 
{ 
if([appdel checkNetwork]==TRUE) 
{ 

NSString *urlString =[NSString stringWithFormat:@"Enter Url........."]; 
    NSLog(@"Upload %@",urlString); 
// setting up the request object now 

isUploadImage=TRUE; 
totalsize=[[strRequest dataUsingEncoding:NSUTF8StringEncoding]length]; 

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; 
[request setURL:[NSURL URLWithString:urlString]]; 
[request setHTTPMethod:@"POST"]; 

NSString *boundary = [NSString stringWithString:@"_1_19330907_1317415362628"]; 
NSString *contentType = [NSString stringWithFormat:@"multipart/mixed; boundary=%@",boundary]; 
[request setValue:contentType forHTTPHeaderField: @"Content-Type"]; 
[request setValue:@"text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2" forHTTPHeaderField:@"Accept"]; 
[request setValue:@"2667" forHTTPHeaderField:@"Content-Length"]; 


/* 
now lets create the body of the post 
*/ 
NSMutableData *body = [NSMutableData data]; 
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];  


[body appendData:[[NSString stringWithString:@"Content-Type: application/json\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 

//[body appendData:[NSData dataWithData:imageData]]; 

[body appendData:[strRequest dataUsingEncoding:NSUTF8StringEncoding]]; 

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


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



theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self]; 
if (theConnection) 
    webData = [[NSMutableData data] retain]; 
else 
    NSLog(@"No Connection");  
} 

} 

Answer 6

आप एकाधिक छवियों को अपलोड करना चाहते हैं तो this demo अच्छा विकल्प है।