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NSMutableURLRequest Http 請求 同步 異步

編輯:關於IOS
#pragma mark  get country code//同步

-(void)getFKjsonCountryCode
{
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        
        NSString *urlString = [NSString stringWithFormat:@"http://www.baidu.com"];
        NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
        [request setURL:[NSURL URLWithString:urlString]];
        [request setHTTPMethod:@"POST"];
        //post
        [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
        [request setValue:@"ios" forHTTPHeaderField:@"X-Channel"];
        [request setValue:@"1000" forHTTPHeaderField:@"X-APP-ID"];
        NSHTTPURLResponse* urlResponse = nil;
        NSError *error = nil;
        NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];
        //NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
        NSDictionary *countryDic = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableLeaves error:&error];
        if ([urlResponse statusCode] >= 200 && [urlResponse statusCode] < 300)
        {
            NSMutableArray * countryArr =  [[countryDic objectForKey:@"data"]objectForKey:@"phone_codes"];
            if(countryArr)
            {
                for(int i = 0; i<[countryArr count]; i++)
                {
                    NSLog(@"countryCode:%@ %@",[[countryArr objectAtIndex:i]objectForKey:@"country"],[[countryArr objectAtIndex:i]objectForKey:@"code"]);
                }
            }
            // NSLog(@"12:%@",[[[[weatherDic objectForKey:@"data"]objectForKey:@"phone_codes"]objectAtIndex:0]objectForKey:@"country"]);
        }
        else
        {
            
        }
 
    });
}
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#pragma mark  get country code //異步
-(void)getFKjsonCountryCodeAsync
{
    NSString *urlString = [NSString stringWithFormat:@"http://www.baidu.com"];
    // 初始化請求
    NSMutableURLRequest  *request = [[NSMutableURLRequest alloc] init];
    // 設置
    [request setURL:[NSURL URLWithString:urlString]];
    [request setCachePolicy:NSURLRequestUseProtocolCachePolicy]; // 設置緩存策略
    [request setTimeoutInterval:20.0]; // 設置超時
    [request setHTTPMethod:@"POST"];
    //......
    
    //    receivedData = [[NSMutableData alloc] initData: nil];
    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request     delegate:self];
    if (connection == nil) {
        NSLog(@"errors");
        // 創建失敗
        return;
    }
}
 
// 收到回應
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    NSLog(@"receive the response");
    
}
// 接收數據
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    
    NSError *error = nil;
    NSDictionary *countryDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:&error];
    NSMutableArray * countryArr =  [[countryDic objectForKey:@"data"]objectForKey:@"phone_codes"];
    if(countryArr)
    {
        
        for(int i = 0; i<[countryArr count]; i++)
        {
            NSLog(@"countryCode:%@ %@",[[countryArr objectAtIndex:i]objectForKey:@"country"],[[countryArr objectAtIndex:i]objectForKey:@"code"]);
        }
    }
    
}
// 數據接收完畢
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
   
    
    NSLog(@"finishLoading");
}
// 返回錯誤
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    
    NSLog(@"Connection failed: %@", error);
}

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