iOS生ネットワーク要求（AFNetWorkingライブラリの推奨）

1、       GET  
 
    //   ，  URL
 
    NSURL *url = [NSURL URLWithString:@"http://api.hudong.com/iphonexml.do?type=focus-c"];
 
     
 
    //   ，  URL      
 
    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];
 
    //NSURLRequest          ：      ，     ：    ，     ：        （ ）
 
                    ：
 
      NSURLRequestUseProtocolCachePolicy（    ）
 
      NSURLRequestReloadIgnoringLocalCacheData（      ）
 
      NSURLRequestReturnCacheDataElseLoad（      ，        ，       ）
 
      NSURLRequestReturnCacheDataDontLoad（      ，    ，        ，     ，          ）
 
      NSURLRequestReloadIgnoringLocalAndRemoteCacheData（        ，           ，          ）
 
      NSURLRequestReloadRevalidatingCacheData（              ，               ）
 
    //   ，     
 
    NSData *received = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
 
     
 
    NSString *str = [[NSString alloc]initWithData:received encoding:NSUTF8StringEncoding];
 
     
 
    NSLog(@"%@",str);
 
2、  POST  
 
    //   ，  URL
 
    NSURL *url = [NSURL URLWithString:@"http://api.hudong.com/iphonexml.do"];
 
    //   ，    
 
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];
 
    [request setHTTPMethod:@"POST"];//       POST，   GET
 
    NSString *str = @"type=focus-c";//    
 
    NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
 
    [request setHTTPBody:data];
 
    //   ，     
 
     
 
    NSData *received = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
 
     
 
    NSString *str1 = [[NSString alloc]initWithData:received encoding:NSUTF8StringEncoding];
 
     
 
    NSLog(@"%@",str1);
3、  GET  
 
    //   ，  url
 
    NSURL *url = [NSURL URLWithString:@"http://api.hudong.com/iphonexml.do?type=focus-c"];
 
    //   ，    
 
    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];
 
    //   ，     
 
    NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
4、  POST  
 
    //   ，  url
 
    NSURL *url = [NSURL URLWithString:@"http://api.hudong.com/iphonexml.do"];
 
    //   ，    
 
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];
 
    [request setHTTPMethod:@"POST"];
 
    NSString *str = @"type=focus-c";
 
    NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
 
    [request setHTTPBody:data];
 
    //   ，     
 
    NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
 
5、         
 
//                
 
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
 
{
 
    NSHTTPURLResponse *res = (NSHTTPURLResponse *)response;
 
    NSLog(@"%@",[res allHeaderFields]);
 
    self.receiveData = [NSMutableData data];                           
 
}
 
//               ，              
 
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
 
{
 
    [self.receiveData appendData:data];
 
}
 
//           
 
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
 
{
 
    NSString *receiveStr = [[NSString alloc]initWithData:self.receiveData encoding:NSUTF8StringEncoding];
 
    NSLog(@"%@",receiveStr);
 
}
 
//       ，      （  ，     ）      
 
-(void)connection:(NSURLConnection *)connection
 
 didFailWithError:(NSError *)error
 
{
 
    NSLog(@"%@",[error localizedDescription]);

}

 
転載先:https://www.cnblogs.com/ficow/p/5034993.html