Post XML data to web server from iphone

问题:

i want to post xml data in following format:

  <?xml version="1.0" encoding="UTF-8"?>    
                       <data>                                               
                         <email>[e-mail]</email>
                                 <password>xyz123</password>                                      
                       </data>

and receive in following format from the webserver

<?xml version="1.0" encoding="UTF-8"?>    
            <user>
                          <user_id>12</user_id> 

                 </user>

help is appreciate now i am trying to use NSUrlConnection and NSMutableRequest i can post data on name like form post,but i want to post just xml data. i have also tried to used ASIHTTPRequest . any code or link is highly appriciated.

回答1:

//prepare request
NSString *urlString = [NSString stringWithFormat:@"http://urlToSend.com"];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];

//set headers
NSString *contentType = [NSString stringWithFormat:@"text/xml"];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];

//create the body
NSMutableData *postBody = [NSMutableData data];
[postBody appendData:[[NSString stringWithFormat:@"<xml>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"<yourcode/>"] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"</xml>"] dataUsingEncoding:NSUTF8StringEncoding]];

//post
[request setHTTPBody:postBody];

//get response
NSHTTPURLResponse* urlResponse = nil;  
NSError *error = [[NSError alloc] init];  
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];  
NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSLog(@"Response Code: %d", [urlResponse statusCode]);
if ([urlResponse statusCode] >= 200 && [urlResponse statusCode] < 300) {
NSLog(@"Response: %@", result); 
//here you get the response 
}

Of course you can also use asynchronous request. Then you have to implement delegate.

Edit. you can also try this:

 NSString* boundary = @"---------------------------14737809831466499882746641449";

 NSMutableData* postbody = [NSMutableData dataWithCapacity: 200];
[postbody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", _boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"content.xml\"\r\n", name] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithString:@"Content-Type: text/xml\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:@"%@\r\n", val] dataUsingEncoding: NSUTF8StringEncoding]];

NSMutableURLRequest* requestURL= [[[NSMutableURLRequest alloc] init] autorelease];
[requestURL setURL:[NSURL URLWithString: _request.text]];
[requestURL setHTTPMethod:@"POST"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
[requestURL addValue:contentType forHTTPHeaderField: @"Content-Type"];
[requestURL addValue: [NSString stringWithFormat:@"%d",[postbody length]] forHTTPHeaderField: @"Content-length"]; 

[requestURL setHTTPBody: postbody];

回答2:

and finally i used library from http://allseeing-i.com/ASIHTTPRequest/

and posted from following code:

NSURL *url = [NSURL URLWithString:@"http://url to post data"];
    ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
    [request addPostValue:@"test name" forKey:@"name"];

    [request setDelegate:self];
    [request startSynchronous];

and used delegate method to receive data or error.

- (void)requestFinished:(ASIHTTPRequest *)request
{
    // Use when fetching text data
    NSString *responseString = [request responseString];
    NSLog(@"%@",responseString);

    // Use when fetching binary data
    NSData *responseData = [request responseData];
}

- (void)requestFailed:(ASIHTTPRequest *)request
{
    NSError *error = [request error];
    NSLog(@"Error %@",error);
}