我需要使用基本认证进行初始的GET HTTP请求。这将是第一次向服务器发送此请求，我已经有了用户名和密码，所以不需要服务器授权的挑战。
第一个问题：
在进行基本身份验证时，NSURLConnection必须设置为同步吗？根据这个帖子中的回答，似乎如果选择异步路线，则无法进行基本身份验证。
有人知道任何没有需要响应挑战的样例代码来说明在GET请求上进行基本身份验证吗？苹果的文档显示了一个示例，但仅在服务器发出挑战请求给客户端之后才会显示。
我对SDK的网络部分比较新，不确定我应该使用哪些其他类来使其正常工作。（我看到NSURLCredential类，但似乎只用于在客户端从服务器请求经过授权的资源后与NSURLAuthenticationChallenge配合使用）。
我正在使用MGTwitterEngine的异步连接，它将授权设置在 NSMutableURLRequest (theRequest) 中：
NSString *authStr = [NSString stringWithFormat:@"%@:%@", [self username], [self password]];
NSData *authData = [authStr dataUsingEncoding:NSASCIIStringEncoding];
NSString *authValue = [NSString stringWithFormat:@"Basic %@", [authData base64EncodingWithLineLength:80]];
[theRequest setValue:authValue forHTTPHeaderField:@"Authorization"];
我不相信这种方法需要通过挑战循环，但我可能是错的
即使问题已经得到解答，我仍想呈现解决方案，该方案不需要外部库，我在另一个帖子中找到了该方案：
// Setup NSURLConnection
NSURL *URL = [NSURL URLWithString:url];
NSURLRequest *request = [NSURLRequest requestWithURL:URL
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:30.0];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];
[connection release];
// NSURLConnection Delegates
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
if ([challenge previousFailureCount] == 0) {
NSLog(@"received authentication challenge");
NSURLCredential *newCredential = [NSURLCredential credentialWithUser:@"USER"
password:@"PASSWORD"
persistence:NSURLCredentialPersistenceForSession];
NSLog(@"credential created");
[[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge];
NSLog(@"responded to authentication challenge");
}
else {
NSLog(@"previous authentication failure");
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
...
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
...
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
...
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
...
}
这里是一个详细的回答，没有第三方参与：
请在这里查看：
//username and password value
NSString *username = @“your_username”;
NSString *password = @“your_password”;
//HTTP Basic Authentication
NSString *authenticationString = [NSString stringWithFormat:@"%@:%@", username, password]];
NSData *authenticationData = [authenticationString dataUsingEncoding:NSASCIIStringEncoding];
NSString *authenticationValue = [authenticationData base64Encoding];
//Set up your request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://www.your-api.com/“]];
// Set your user login credentials
[request setValue:[NSString stringWithFormat:@"Basic %@", authenticationValue] forHTTPHeaderField:@"Authorization"];
// Send your request asynchronously
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *responseCode, NSData *responseData, NSError *responseError) {
if ([responseData length] > 0 && responseError == nil){
//logic here
}else if ([responseData length] == 0 && responseError == nil){
NSLog(@"data error: %@", responseError);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Error accessing the data" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[alert show];
[alert release];
}else if (responseError != nil && responseError.code == NSURLErrorTimedOut){
NSLog(@"data timeout: %@”, NSURLErrorTimedOut);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"connection timeout" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[alert show];
[alert release];
}else if (responseError != nil){
NSLog(@"data download error: %@”,responseError);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"data download error" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[alert show];
[alert release];
}
}]
请您给我反馈意见。
谢谢
- (NSString *)base64Encoding NS_DEPRECATED(10_6, 10_9, 4_0, 7_0);
最好使用NSDataBase64Encoding类别。 - BenNSString *authValue = [NSString stringWithFormat:@"Basic %@", [authData base64EncodingWithLineLength:80]];
使用
NSString *encodedLoginData = [Base64 encode:[loginString dataUsingEncoding:NSUTF8StringEncoding]];
之后，您需要包含以下文件：
static char *alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
@implementation Base64
+(NSString *)encode:(NSData *)plainText {
int encodedLength = (((([plainText length] % 3) + [plainText length]) / 3) * 4) + 1;
unsigned char *outputBuffer = malloc(encodedLength);
unsigned char *inputBuffer = (unsigned char *)[plainText bytes];
NSInteger i;
NSInteger j = 0;
int remain;
for(i = 0; i < [plainText length]; i += 3) {
remain = [plainText length] - i;
outputBuffer[j++] = alphabet[(inputBuffer[i] & 0xFC) >> 2];
outputBuffer[j++] = alphabet[((inputBuffer[i] & 0x03) << 4) |
((remain > 1) ? ((inputBuffer[i + 1] & 0xF0) >> 4): 0)];
if(remain > 1)
outputBuffer[j++] = alphabet[((inputBuffer[i + 1] & 0x0F) << 2)
| ((remain > 2) ? ((inputBuffer[i + 2] & 0xC0) >> 6) : 0)];
else
outputBuffer[j++] = '=';
if(remain > 2)
outputBuffer[j++] = alphabet[inputBuffer[i + 2] & 0x3F];
else
outputBuffer[j++] = '=';
}
outputBuffer[j] = 0;
NSString *result = [NSString stringWithCString:outputBuffer length:strlen(outputBuffer)];
free(outputBuffer);
return result;
}
@end
自从NSData::dataUsingEncoding被弃用（iOS 7.0），您可以使用以下解决方案：
// Forming string with credentials 'myusername:mypassword'
NSString *authStr = [NSString stringWithFormat:@"%@:%@", username, password];
// Getting data from it
NSData *authData = [authStr dataUsingEncoding:NSASCIIStringEncoding];
// Encoding data with base64 and converting back to NSString
NSString* authStrData = [[NSString alloc] initWithData:[authData base64EncodedDataWithOptions:NSDataBase64EncodingEndLineWithLineFeed] encoding:NSASCIIStringEncoding];
// Forming Basic Authorization string Header
NSString *authValue = [NSString stringWithFormat:@"Basic %@", authStrData];
// Assigning it to request
[request setValue:authValue forHTTPHeaderField:@"Authorization"];
NSString * urlString = @"http://www.testurl.com/";
NSURL * url = [NSURL URLWithString:urlString];
NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:url];
NSURLCredential * credential = [NSURLCredential credentialWithUser:@"username" password:@"password" persistence:NSURLCredentialPersistenceForSession];
GTMHTTPFetcher * gFetcher = [GTMHTTPFetcher fetcherWithRequest:request];
gFetcher.credential = credential;
[gFetcher beginFetchWithDelegate:self didFinishSelector:@selector(fetchCompleted:withData:andError:)];
您可以使用AFNetworking（它是开源的），这是适合我工作的代码。此代码使用基本身份验证发送文件。只需更改URL、电子邮件和密码即可。
NSString *serverUrl = [NSString stringWithFormat:@"http://www.yoursite.com/uploadlink", profile.host];
NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:serverUrl parameters:nil error:nil];
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
// Forming string with credentials 'myusername:mypassword'
NSString *authStr = [NSString stringWithFormat:@"%@:%@", email, emailPassword];
// Getting data from it
NSData *authData = [authStr dataUsingEncoding:NSASCIIStringEncoding];
// Encoding data with base64 and converting back to NSString
NSString* authStrData = [[NSString alloc] initWithData:[authData base64EncodedDataWithOptions:NSDataBase64EncodingEndLineWithLineFeed] encoding:NSASCIIStringEncoding];
// Forming Basic Authorization string Header
NSString *authValue = [NSString stringWithFormat:@"Basic %@", authStrData];
// Assigning it to request
[request setValue:authValue forHTTPHeaderField:@"Authorization"];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
NSURL *filePath = [NSURL fileURLWithPath:[url path]];
NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithRequest:request fromFile:filePath progress:^(NSProgress * _Nonnull uploadProgress) {
// This is not called back on the main queue.
// You are responsible for dispatching to the main queue for UI updates
dispatch_async(dispatch_get_main_queue(), ^{
//Update the progress view
LLog(@"progres increase... %@ , fraction: %f", uploadProgress.debugDescription, uploadProgress.fractionCompleted);
});
} completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
if (error) {
NSLog(@"Error: %@", error);
} else {
NSLog(@"Success: %@ %@", response, responseObject);
}
}];
[uploadTask resume];
[authData base64EncodedString]），请将Matt Gallagher的NSData+Base64.h和.m文件添加到您的XCode项目中（Mac和iPhone上的Base64编码选项）。 - elimbase64Encoding已被弃用。我使用[authData base64EncodedStringWithOptions:NSDataBase64EncodingEndLineWithLineFeed]代替它。还可以使用NSDataBase64Encoding64CharacterLineLength或NSDataBase64Encoding76CharacterLineLength。 - Dirk