如何編寫http get和post在目標c中？

Question

我想使用HTTP GET和POST用於獲取請求和某些URL請求的響應，

但我不知道如何在目標C使用它們..

，哪一個會先獲取或建立連接後發佈。？

如何修改內容，並張貼到服務器..

任何一個可以幫我嗎？

Answer 1

爲GET使用：

+(NSMutableURLRequest*)getURq_getansascreen:(NSString*)ws_name { 

    NSLog(@"%@",ws_name); 

    NSMutableURLRequest *urlReq = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:ws_name] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30]; 

    [urlReq addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"]; 
    [urlReq setHTTPMethod:@"GET"]; 

    return urlReq; 
} 

對使用​​後：

+(NSMutableURLRequest*)postURq_getansascreen:(NSString*)ws_name :(NSString*)service { 

     NSString *tempUrl = domainURL; 

     NSString *msgLength = [NSString stringWithFormat:@"%d",[ws_name length]]; 
     NSMutableURLRequest *urlReq = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@Service=%@",tempUrl,service]] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30]; 
     [urlReq addValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; 
     [urlReq addValue:msgLength forHTTPHeaderField:@"Content-Length"]; 
     [urlReq setHTTPMethod:@"POST"]; 
     [urlReq setHTTPBody: [ws_name dataUsingEncoding:NSUTF8StringEncoding]]; 

     return urlReq; 
    } 

//調用有鑑於此做負荷`

WSPContinuous *wspcontinuous = [[WSPContinuous alloc] initWithRequestForThread:[webService getURq_getansascreen:[webService GetDetails:str_filter]] sel:@selector(WS_GetDetailsLoaded:) andHandler:self];` 

//創建類WSPContinuous並添加這些fns ..

-(id)initWithRequestForThread:(NSMutableURLRequest*)urlRequest sel:(SEL)seletor andHandler:(NSObject*)handler { 

    if (self=[super init]) { 

     self.MainHandler = handler; 
     self.targetSelector = seletor; 
     self.urlReq = urlRequest; 

     [self performSelectorOnMainThread:@selector(startParse) withObject:nil waitUntilDone:NO]; 
    } 
    return (id)urlReq; 
} 

-(void)startParse{ 

    NSLog(@"URL CALLING %@",urlReq.URL); 

    con = [[NSURLConnection alloc] initWithRequest:urlReq delegate:self]; 
    if (con) { 
     myWebData = [[NSMutableData data] retain]; 

     NSLog(@"myWebData old....%@",myWebData); 
    } 
    else { 
     [self.MainHandler performSelectorOnMainThread:targetSelector withObject:nil waitUntilDone:NO]; 
    } 
} 

//-------------------------------connection----------------- 

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{ 
    [myWebData setLength:0]; 
} 

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{ 
    [myWebData appendData:data]; 
} 

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{ 

    [self.MainHandler performSelectorOnMainThread:targetSelector withObject:nil waitUntilDone:NO]; 

} 

-(void)connectionDidFinishLoading:(NSURLConnection *)connection{ 

    NSString *thexml = [[NSString alloc] initWithBytes:[myWebData mutableBytes] length:[myWebData length] encoding:NSUTF8StringEncoding]; 

    NSLog(@"xmlDictionary %@",thexml); 

    [thexml release]; 

    NSError *parseError = nil; 
    NSDictionary *xmlDictionary = [XMLReader dictionaryForXMLData:myWebData error:&parseError]; 

    [AlertHandler hideAlert]; 

    [MainHandler performSelector:targetSelector withObject:xmlDictionary]; 
} 

Answer 2

如果你想開始，一個更好的想法是做一些閱讀NSMutableURLRequest和相關的主題，如NSURLConnection。

您可以在任何地方獲得示例代碼。只是谷歌它。

谷歌搜索 - >objective c get and post

，並先打 - >Tutorials for using HTTP POST and GET on the iPhone in Objective-C