iphone实现xml的post传递，并且接收数据 @ 自由手記

在iphone开发中，经常会遇到和服务器端交互数据，下面代码是向服务器端传递一个xml数据流，服务器端接受数据并返回一个xml数据类型。

iphone传递数据的代码：

-(void) postxml
{
    //prepar request
    NSString *urlString = [NSString stringWithFormat:@"path"];
    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:@"<Request Action=\"Login\">"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<Body>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<Username>wangjun</Username>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<Password>password</Password>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<PlatformID>2</PlatformID>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<PlatformVersion>3.1.3</PlatformVersion>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<TaskViewerName>IP 1.3</TaskViewerName>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<TaskViewerVersion>3</TaskViewerVersion>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"</Body>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"</Request>"] 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);
    }
}

运行结果是：

2010-09-09 13:19:25.190 PostXmlDemo1[685:307] 点击我了,哈哈
2010-09-09 13:19:28.450 PostXmlDemo1[685:307] Response Code: 200
2010-09-09 13:19:28.456 PostXmlDemo1[685:307] Response: <Response Action=’Login’><Cookie>DFGHJYUIILNBV$%^&*gghj^&IUF%^R^DFYUIHNVB</Cookie><Body><User Name=’用户名’ >< Avatar>登陆用户头像URL</Avatar></User><State>1</State><Description>登陆成功后的描述信息。</Description></Body></Response>