Post方式发送UIImage数据到服务器

//This example send email with attachment using server side

//So iPhone will fill form and send proper request to web server using POST method

//For test you can use attached sendEmail.php

 

-(NSMutableData *)generateDataFromText:(NSString *)dataText fieldName:(NSString *)fieldName{

	NSString *post = [NSString stringWithFormat:@"--AaB03x\r\nContent-Disposition: form-data; name=\"%@\"\r\n\r\n", fieldName];



    // Get the post header int ASCII format:

    NSData *postHeaderData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

    

    // Generate the mutable data variable:

    NSMutableData *postData = [[NSMutableData alloc] initWithLength:[postHeaderData length] ];

    [postData setData:postHeaderData];



    NSData *uploadData = [dataText dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

	

    // Add the text:

    [postData appendData: uploadData];



    // Add the closing boundry:

    [postData appendData: [@"\r\n" dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]];



    // Return the post data:

    return postData;

}



 

- (NSData *)generatePostDataForData:(NSData *)uploadData fileName:(NSString *)fileName



{



    // Generate the post header:



	

    NSString *post = [NSString stringWithFormat:@"--AaB03x\r\nContent-Disposition: form-data; name=\"attachment\"; filename=\"%@\"\r\nContent-Type: video/3gpp\r\n\r\n", fileName];



    

    // Get the post header int ASCII format:



    NSData *postHeaderData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];



    

    // Generate the mutable data variable:



    NSMutableData *postData = [[NSMutableData alloc] initWithLength:[postHeaderData length] ];



    [postData setData:postHeaderData];



    

    // Add the image:



    [postData appendData: uploadData];



    

    // Add the closing boundry:



    [postData appendData: [@"\r\n--AaB03x--" dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]];



    

    // Return the post data:



    return postData;



}



 

-(void)sendEmailTo:(NSString *)email name:(NSString *)name {



 

	

	NSString *emailBody = @"Just some HTML text"



	

	//Fill some text fields



	NSMutableData *postData = [self generateDataFromText:email fieldName:@"to_email"];



	[postData appendData:[self generateDataFromText:@"10000000" fieldName:@"MAX_FILE_SIZE"]];



	[postData appendData:[self generateDataFromText:name fieldName:@"to_name"]];



	[postData appendData:[self generateDataFromText:email fieldName:@"to_email"]];



	[postData appendData:[self generateDataFromText:[[NSUserDefaults standardUserDefaults] stringForKey:@"name_preference"] fieldName:@"from_name"]];



	[postData appendData:[self generateDataFromText:[[NSUserDefaults standardUserDefaults] stringForKey:@"email_preference"] fieldName:@"from_email"]];



	[postData appendData:[self generateDataFromText:currentEmail.emailSubject fieldName:@"subject"]];



	[postData appendData:[self generateDataFromText:emailBody fieldName:@"body"]];



	[postData appendData:[self generateDataFromText:email fieldName:@"to_email"]];



 

	//Prepare data for file



	NSData *dataObj = [NSData dataWithContentsOfFile:@"/link/to/file"];



	[postData appendData:[self generatePostDataForData:dataObj fileName:@"fileName"]];



	

	

	// Setup the request:



	NSMutableURLRequest *uploadRequest = [[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:kLinkToPostFile] cachePolicy: NSURLRequestReloadIgnoringLocalCacheData timeoutInterval: 30 ] autorelease];



	[uploadRequest setHTTPMethod:@"POST"];



	[uploadRequest setValue:[NSString stringWithFormat:@"%d", [postData length]] forHTTPHeaderField:@"Content-Length"];



	[uploadRequest setValue:@"multipart/form-data; boundary=AaB03x" forHTTPHeaderField:@"Content-Type"];



	[uploadRequest setHTTPBody: postData];



	

	NSData *responseData = [NSURLConnection sendSynchronousRequest:uploadRequest returningResponse:nil error:nil];



	NSLog([[NSString alloc] initWithData:responseData encoding:NSASCIIStringEncoding]);



	

	

}