我正在制作一个需要您登录的应用程序。我正在使用 JSON。到目前为止,我已经能够发送带有用户名和密码的 POST 请求,并且我得到了一个令牌(它显示在控制台中)。当我没有输入正确的用户名/密码组合时,我没有得到一个令牌。如果我得到一个令牌,我想要发生的是继续下一个视图控制器。我认为我需要使用 if 语句(我会将用于切换视图控制器的代码放入其中)但我不知道我需要什么参数来检查我是否得到了一个令牌。
这是我在实现文件中使用的代码。它在按下按钮时运行的方法中:
@try {
if([[usernameTextField text] isEqualToString:@""] || [[passTextField text] isEqualToString:@""] ) {
[self alertStatus:@"Please enter both Username and Password" :@"Login Failed!"];
} else {
NSString *post =[[NSString alloc] initWithFormat:@"username=%@&password=%@",[usernameTextField text],[passTextField text]];
NSLog(@"PostData: %@",post);
NSURL *url=[NSURL URLWithString:@"https://beta.network360.com/tokens"];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:url];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
NSError *error = [[NSError alloc] init];
NSHTTPURLResponse *response = nil;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(@"Response code: %d", [response statusCode]);
if ([response statusCode] >=200 && [response statusCode] <300)
{
NSString *responseData = [[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(@"Response ==> %@", responseData);
SBJsonParser *jsonParser = [SBJsonParser new];
NSDictionary *jsonData = (NSDictionary *) [jsonParser objectWithString:responseData error:nil];
NSLog(@"%@",jsonData);
NSInteger success = [(NSNumber *) [jsonData objectForKey:@"success"] integerValue];
NSLog(@"%d",success);
if(success == 1)
{
NSLog(@"Login SUCCESS");
[self alertStatus:@"Logged in Successfully." :@""];
} else {
NSString *error_msg = (NSString *) [jsonData objectForKey:@"error_message"];
[self alertStatus:error_msg :@"Login Failed!"];
}
} else {
if (error) NSLog(@"Error: %@", error);
[self alertStatus:@"Connection Failed" :@""];
}
}
}
@catch (NSException * e)
{
NSLog(@"Exception: %@", e);
[self alertStatus:@"Login Failed." :@""];
//[[PSearchViewController new] performSegueWithIdentifier:@"loginCancel" sender:self];
}
此外,当我输入正确的用户名/密码组合时,这是我在控制台输出中得到的内容(顺便说一句,我试图更改控制台中显示的所有机密内容,所以如果某些内容不完全匹配,应该没问题。我只是想表明我得到了一个令牌):
2013-07-28 13:23:21.607 Empyrean[28283:c07] PostData: username=username@gmail.com&password=password
2013-07-28 13:23:22.300 Empyrean[28283:c07] Response code: 200
2013-07-28 13:23:22.301 Empyrean[28283:c07] Response ==> {"token":"scFDzxSAVk2sxQBShEGS","user":{"id":300230,"username":"username@gmail.com","display_name":"FirstName LastName","unconfirmed_email":null,"email":"username@gmail.com","confirmation_email":"username@gmail.com","client_identifier":null,"client_id":138,"is_admin":false,"support_email":"support@supportemail.com","application_name":"AppName","show_project_vintage_date":false,"is_anonymous":false,"is_active":true,"is_confirmed":true,"pending_reconfirmation":false,"can_resend_confirmation":false,"client_name":"Broker","show_advertisements":true,"header_logo":"/foo/headerlogo.gif","report_footer_logo":"/stuff/foo/footerlogo.png","authorized_features":["find_stuff","do_stuff","stuff_stuff","settings","menu","manage_stuff","measure_stuff","export_stuff"],"url":"https://www.website.com/stuff/numbersdsjkflds"}}
2013-07-28 13:23:22.304 Empyrean[28283:c07] {
token = dlsfkasdfDfdsklfdDsa;
user = {
"application_name" = "Application Name";
"authorized_features" = (
"find_stuff",
"do_stuff",
"stuff_stuff",
settings,
menu,
"manage_stuff",
"measure_stuff",
"export_stuff"
);
"can_resend_confirmation" = 0;
"client_id" = 138;
"client_identifier" = "<null>";
"client_name" = Broker;
"confirmation_email" = "username@gmail.com";
"display_name" = "FirstName LastName";
email = "username@gmail.com";
"url" = "https://www.website.com/stuff/numbersdsjkflds";
"header_logo" = "/foo/headerlogo.gif";
id = 300230;
"is_active" = 1;
"is_admin" = 0;
"is_anonymous" = 0;
"is_confirmed" = 1;
"pending_reconfirmation" = 0;
"report_footer_logo" = "/stuff/foo/footerlogo.png";
"show_advertisements" = 1;
"show_project_vintage_date" = 0;
"support_email" = "support@supportemail.com";
"unconfirmed_email" = "<null>";
username = "username@gmail.com";
};
}