无法访问iOS中的Web服务

Question

我想从我的iOS应用程序连接到Web服务。以前我的网址是http://<domain name>/mobilews/mobilews.asmx。最近我更改为http://<domain name>/mobilewstest/mobilews.asmx

我已将我的网址放在info plist文件中。但是，在我将这个改为新的URL后，我无法登录到该网址。

NSString *urlString = [NSString stringWithFormat:@"%@%@",serverURL,[queryString stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]]; 

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; 
[request setURL:[NSURL URLWithString:urlString]]; 
[request setHTTPMethod:@"GET"]; 


NSHTTPURLResponse *response ; 

NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil]; 

int statusCode = [((NSHTTPURLResponse *)response) statusCode];` 

这里returnData成为nill和statusCode为0。但是，这是urlString成功登录到Web服务时，它在浏览器提供。

Answer 1

NSURL *url = [NSURL URLWithString:@"YOUR URL HERE"]; 
    NSError *connectionError = nil; 
    NSData *inData = [NSData dataWithContentsOfURL:url options:NSDataReadingUncached error:&connectionError]; 
    NSInteger code = [connectionError code]; 
    if (code != 0) 
    { 
     NSString *locDesc = [NSString stringWithString:[connectionError localizedDescription]]; 
     NSString *locFail = [NSString stringWithString:[connectionError localizedFailureReason]]; 
     NSLog(@"Error: %d %@ %@", code, locDesc, locFail); 
    } 
    else if ([inData length] == 0) 
    { 
     NSLog(@"No data"); 
    } 
    else{ 
    NSData *resultData = [NSData dataWithContentsOfURL:url]; 
    NSString *responseString = [[NSString alloc]initWithData:resultData encoding:NSUTF8StringEncoding]; 
    } 

我看到你发送同步请求...试试这个更简单的方法。