data not post through webservice json in ios - iphone

Question

i am post the data using webservie but data is not post into database.`
NSURL *url = [NSURL URLWithString:#"some url"];
NSArray *res=[[NSArray alloc] initWithObjects:txtname.text, nil];
NSError *jsonError;
//NSJSONSerialization is Apple's new json serialization class so we can use it to convert to and from json and foundation objects
NSData *requestdata = [NSJSONSerialization dataWithJSONObject:res options:0 error:&jsonError];
NSMutableURLRequest *request;
request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:[NSString stringWithFormat:#"%d", [requestdata length]] forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:requestdata];
//this kicks off the request asynchronously
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
`

Answer 1

NSString *parameter1=#"";
NSString *parameter2=#"";
NSString *urlString = [NSString stringWithFormat:#"your URL"];
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"];
// parameter parameter1
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"parameter_1\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:parameter1
dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
// parameter parameter2
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"parameter_2\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:parameter2 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];
// now lets make the connection to the web
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(#"returnString %#",returnString);
In the Similar manner you can add as many paramters as you want .