我NSURLCredentials在这种方法中使用：
-(void)UserLogin:(NSString *)user andPassWordExists:(NSString *)password completionHandler:(void (^)(NSArray *resultsObject, NSError *error))completionHandler
{
NSURL *url = [NSURL URLWithString:kIP];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc]
initWithRequest:request];
NSURLCredential *credential = [NSURLCredential
credentialWithUser:user
password:password
persistence:NSURLCredentialPersistenceForSession];
[operation setCredential:credential];
[[NSOperationQueue mainQueue] addOperation:operation];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
if (completionHandler) {
completionHandler(responseObject, nil);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (completionHandler) {
completionHandler(nil, error);
}
}];
[operation start];
}
现在我希望在注销方法中清除 NSURLCredentials，如下所示：
-(void)logout
{
//Clear NSURLCredentialPersistenceForSession
}
我该怎么做呢？我应该重置 NSURLCredentials 还是要清除它们？
更新
我找到了这个解决方案：
NSURLCredentialStorage *credentialStorage = [NSURLCredentialStorage sharedCredentialStorage];
NSDictionary *credentialsDicationary = [credentialStorage allCredentials];
for (NSURLProtectionSpace *space in [credentialsDicationary allKeys]) {
NSDictionary *spaceDictionary = [credentialsDicationary objectForKey:space];
for (id userName in [spaceDictionary allKeys]) {
NSURLCredential *credential = [spaceDictionary objectForKey:userName];
[credentialStorage removeCredential:credential forProtectionSpace:space];
}
}
从这里开始：在请求时使用 NSURLCredentialPersistenceForSession 然后在注销时清除凭据仍然保留证书
这是最好的方法吗？我只存储了 1 个凭据。这段代码也在这一行给了我一个警告：
NSURLCredential *credential = [spaceDictionary objectForKey:userName];
这是警告...如何删除此警告？
/Users/jsuske/Documents/SSiPad(Device Only)ios7/SchedulingiPadApplication/ViewControllers/LHLoginController.m:496:73: Local declaration of 'userName' hides instance variable
更新
好的，所以我有 3 个方法：UserLogin、Login 和 LogoutButtonPressed
UserLogin：我正在使用 AFNetworking 使用 NSURLCredential 连接到 Windows Authenticated URL，如上所示：
-(void)UserLogin:(NSString *)user andPassWordExists:(NSString *)password completionHandler:(void (^)(NSArray *resultsObject, NSError *error))completionHandler
{
NSURL *url = [NSURL URLWithString:kIP];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc]
initWithRequest:request];
NSURLCredential *credential = [NSURLCredential
credentialWithUser:user
password:password
persistence:NSURLCredentialPersistenceForSession];
[operation setCredential:credential];
[[NSOperationQueue mainQueue] addOperation:operation];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
if (completionHandler) {
completionHandler(responseObject, nil);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (completionHandler) {
completionHandler(nil, error);
}
}];
[operation start];
}
此方法由 Login 方法调用：
- (void)Login
{
NSString *rawString = [self.idTextField text];
NSCharacterSet *whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet];
[self.idTextField setText:[rawString stringByTrimmingCharactersInSet:whitespace]];
[userName UserLogin:self.idTextField.text andPassWordExists:self.passwordTextField.text completionHandler:^(id responseObject, NSError *error) {
if (responseObject) {
[self.idTextField removeFromSuperview];
[self.passwordTextField removeFromSuperview];
[self.loginButton removeFromSuperview];
self.idTextField = nil;
self.passwordTextField = nil;
//self.loginButton = nil;
[self CreateMenu];
[indicatorView stopAnimating];
[indicatorView removeFromSuperview];
indicatorView = nil;
[loadingView removeFromSuperview];
loadingView = nil;
}else{
[self CustomAlert:@"Sorry Login Failed, User and/or Passsword Incorrect"];
[indicatorView stopAnimating];
[indicatorView removeFromSuperview];
indicatorView = nil;
[loadingView removeFromSuperview];
loadingView = nil;
}
}];
}
我正在尝试使用 LogoutButtonPressed 清除我的会话：
- (void)LogoutButtonPressed
{
//@TODO: Fix Logout
NSDictionary *credentialsDict = [[NSURLCredentialStorage sharedCredentialStorage] allCredentials];
if ([credentialsDict count] > 0) {
NSEnumerator *protectionSpaceEnumerator = [credentialsDict keyEnumerator];
id urlProtectionSpace;
while (urlProtectionSpace = [protectionSpaceEnumerator nextObject]) {
NSEnumerator *userNameEnumerator = [[credentialsDict objectForKey:urlProtectionSpace] keyEnumerator];
id userNameCred;
while (userNameCred = [userNameEnumerator nextObject]) {
NSURLCredential *cred = [[credentialsDict objectForKey:urlProtectionSpace] objectForKey:userNameCred];
NSLog(@"cred to be removed: %@", cred);
[[NSURLCredentialStorage sharedCredentialStorage] removeCredential:cred forProtectionSpace:urlProtectionSpace];
}
}
}
}
我从这个例子中得到了这个代码：http ://www.springenwerk.com/2008/11/i-am-currently-building-iphone.html
现在我遇到的问题是，当我触发注销按钮然后转到没有凭据的情况下触发登录方法时，我仍然可以登录，如果我注销然后等待 2-3 分钟并在没有凭据的情况下登录我无法登录。为什么会这样，这几乎就像信用仍然被保存了一样。请帮忙。
更新
我试图清除 LogoutButtonPressed 中的缓存、cookie 和凭据：
NSURLCache *sharedCache = [NSURLCache sharedURLCache];
[sharedCache removeAllCachedResponses];
NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSArray *cookies = [cookieStorage cookies];
id cookie;
for (cookie in cookies) {
[cookieStorage deleteCookie:cookie];
}
NSDictionary *credentialsDict = [[NSURLCredentialStorage sharedCredentialStorage] allCredentials];
if ([credentialsDict count] > 0) {
NSEnumerator *protectionSpaceEnumerator = [credentialsDict keyEnumerator];
id urlProtectionSpace;
while (urlProtectionSpace = [protectionSpaceEnumerator nextObject]) {
NSEnumerator *userNameEnumerator = [[credentialsDict objectForKey:urlProtectionSpace] keyEnumerator];
id userNameCreds;
while (userNameCreds = [userNameEnumerator nextObject]) {
NSURLCredential *cred = [[credentialsDict objectForKey:urlProtectionSpace] objectForKey:userNameCreds];
[[NSURLCredentialStorage sharedCredentialStorage] removeCredential:cred forProtectionSpace:urlProtectionSpace];
}
}
}
它仍然没有工作。