问题描述
我需要从受密码保护的URL解析xml文件我尝试了以下内容
I need to parse a xml file from a password protected URL I tried the following
NSURLCredential *credential = [NSURLCredential credentialWithUser:@"admin" password:@"123456" persistence:NSURLCredentialPersistenceForSession];
NSURLProtectionSpace *protectionSpace = [[NSURLProtectionSpace alloc]
initWithHost:@"xyz.com"
port:80
protocol:@"http"
realm:nil
authenticationMethod:NSURLAuthenticationMethodDefault];
[[NSURLCredentialStorage sharedCredentialStorage] setCredential:credential
forProtectionSpace:protectionSpace];
url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"GET"];
[request setValue:@"application/xml" forHTTPHeaderField:@"Content-Type"];
connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
NSURLResponse *response;
NSError *error;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse: &response error: &error];
NSString *dataStr=[[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(@"data == %@\n error in connecting == %@",dataStr,error);
我得到以下回复
data == <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>401 Authorization Required</title>
</head><body>
<h1>Authorization Required</h1>
<p>This server could not verify that you
are authorized to access the document
requested. Either you supplied the wrong
credentials (e.g., bad password), or your
browser doesn't understand how to supply
the credentials required.</p>
<p>Additionally, a 401 Authorization Required
error was encountered while trying to use an ErrorDocument to handle the request.</p>
</body></html>
连接错误==错误域= NSURLErrorDomain代码= -1012操作无法完成。（NSURLErrorDomain错误-1012。）UserInfo = 0x6e51b90 {NSErrorFailingURLKey = ，
error in connecting == Error Domain=NSURLErrorDomain Code=-1012 "The operation couldn’t be completed. (NSURLErrorDomain error -1012.)" UserInfo=0x6e51b90 {NSErrorFailingURLKey=http://example.com/api/ID/password/xml/,
感谢任何帮助！
推荐答案
使用 NSURLRequest 访问服务器时， NSURLConnection 的委托方法提供当身份验证受到质疑时，通知的方式。
While using a NSURLRequest to access a server, the delegate methods of NSURLConnection provides a way to be notified when an authentication is challenged.
以下示例将展示一种处理网址的方法请求凭证。
This below sample will show one approach to handle URLs that asks credentials.
- (void)CallPasswordProtectedWebService
{
NSURL *url = [NSURL URLWithString:@"your url"];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
urlConnection = [[NSURLConnection alloc] initWithRequest:urlRequest delegate:self];
}
//when server asks the credentials this event will fire
- (void)connection:(NSURLConnection *)connection
didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
if ([challenge previousFailureCount] == 0) {
NSURLCredential *newCredential;
newCredential=[NSURLCredential credentialWithUser:@"username" password:@"password" persistence:NSURLCredentialPersistenceNone];
[[challenge sender] useCredential:newCredential
forAuthenticationChallenge:challenge];
} else {
[[challenge sender] cancelAuthenticationChallenge:challenge];
}
}
//when connection succeeds this event fires
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(@"Successfuly connected ");
}
//when connection fails the below event fires
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(@"connection failed");
}
希望这会有所帮助
这篇关于NSURLErrorDomain错误-1012的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！