NSMutableURLRequest和NSHTTPURLResponse的简单使用

NSMutableURLRequest通过POST方法向服务器请求时间，很简单的一个例子，使用HTTP入门。

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    NSString *urlString = [[NSString alloc] initWithFormat:@"http://api.air-id.net/InterFace/datetime.php"];
    NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
    [request setURL:[NSURL URLWithString:urlString]];
    [request setHTTPMethod:@"POST"];
    
    NSString *contentType = [NSString stringWithFormat:@"text/xml"];
    [request addValue:contentType forHTTPHeaderField:@"Content-Type"];
    
    NSMutableData *postBody = [NSMutableData data]; 
    [postBody appendData:[[NSString stringWithFormat:@""] dataUsingEncoding:NSUTF8StringEncoding]];
    [request setHTTPBody:postBody];
    
    
    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(@"服务器返回：%@",result);
}

发送XML数据：

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    NSString *urlString = [NSString stringWithFormat:@"http://api.air-id.net/InterFace/"]; 
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; 
    [request setURL:[NSURL URLWithString:urlString]]; 
    [request setHTTPMethod:@"POST"];
    
    NSString *contentType = [NSString stringWithFormat:@"text/xml"]; 
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"];
    
     NSMutableData *postBody = [NSMutableData data]; 
    [postBody appendData:[[NSString stringWithFormat:@"<?xml version='1.0' encoding='UTF-8'?>"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [postBody appendData:[[NSString stringWithFormat:@"<boot>"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [postBody appendData:[[NSString stringWithFormat:@"<package>SAC.MobileClient.Client</package>"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [postBody appendData:[[NSString stringWithFormat:@"<class>RESOLVE_MASTER</class>"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [postBody appendData:[[NSString stringWithFormat:@"<mac_code>55555555555555</mac_code>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<imei>000000000000000</imei>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"<system>ios</system>"] dataUsingEncoding:NSUTF8StringEncoding]];
    [postBody appendData:[[NSString stringWithFormat:@"</boot>"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    
    
    [request setHTTPBody:postBody];
    NSLog(@"sendBody:%@",postBody);
    
    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(@"result:%@",result);

}