ios - 在 IOS swift 中具有基本身份验证的 NSXMLparser

Question

我们有一个需要身份验证来获取 XML 数据的 Web 服务。现在我正在快速编写代码来解析这个 XML 请求。我正在使用 NSXML 解析器。但它不适用于身份验证。在哪里传递这些凭据？

Answer 1

使用 AFNetworking ，使用 AFHTTPRequestOperation 可以传递凭据。

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

NSMutableURLRequest *request = [manager.requestSerializer requestWithMethod:@"GET" URLString:@"http://188.40.74.207:8888/api/customer" parameters:nil error:nil];

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
//[operation setCredential:credential];
manager.requestSerializer = [AFJSONRequestSerializer serializer];

[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

[manager.requestSerializer setAuthorizationHeaderFieldWithUsername:@"admin" password:@"admin"];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {


    NSLog(@"Success: %@", [operation responseString]);

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Failure: %@", error);
}];
[manager.operationQueue addOperation:operation];


[manager GET:@"http://188.40.74.207:8888/api/customer" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    // NSLog(@"JSON: %@", responseObject);
    arr_Response = responseObject;
    //  NSLog(@"Arr count is: %lu", (unsigned long)arr_Response.count);
    [SVProgressHUD dismiss];

    [self parseData];


} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

或者不使用第三方，您可以使用以下代码。

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"];

或者你可以试试下面的代码。NSURLConnection 有一个委托方法

// 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");
}
}