如果自定义标记的生成是异步的,我将如何返回Firebase自定义标记? [英] How would I return a Firebase custom token if the generation of the custom token is asynchronous?
问题描述
我使用的是Heroku上托管的Spark Framework,我在我的服务器的 main
:方法中有这个
post(/ token,(request,response) - >Hello World);
工作正常,但是我想要发送自定义令牌,而不是Hello World
因此,逻辑上,我需要这个:
pre $ FirebaseAuth auth = FirebaseAuth.getInstance();
String uid = UUID.randomUUID()。toString();
post(/ token,(request,response) - > auth.createCustomToken(uid));
然而, createCustomToken
返回一个 Task< String>
而不是 String
。所以,我必须这样做:
auth.createCustomToken(uid).addOnSuccessListener(new OnSuccessListener< String>(){
@Override
public void onSuccess(String s){
$ b}
});
然而,在这种形式下:
<$ p (),$ p $ {code> post(/ token,(request,response) - > auth.createCustomToken(uid).addOnSuccessListener(new OnSuccessListener< String>(){
@Override
public void onSuccess(String token){
}
}));
我真的还是返回一个 我可以做些什么来解决这个问题? 在Google App Engine中也会遇到类似的问题。我必须在服务器端验证Firebase令牌,但是响应会从Firebase发回异步。 ( 您可以尝试以下代码,而不是使用OnSuccesListener I'm using the Spark Framework hosted on Heroku and I have this in my That's working fine, however, I want to actually send a custom token, and not just "Hello World". So, logically, I would need this: However, However, in this form: All I really still returned was a What can I do to solve this? I was running into a similar problem at Google App Engine. I had to verify a firebase token at server side but the response were sent back async from firebase. (
Verify Firebase Token at Google App Engine) You can try the following code instead of using a OnSuccesListener
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。我需要从 onSuccess()
方法返回 token ,但是我不能,因为它是一个内部类。 / p>
在Google App Engine上验证Firebase令牌)
任务< ;字符串> authTask = FirebaseAuth.getInstance()。createCustomToken(uid);
尝试{
Tasks.await(authTask);
} catch(ExecutionException | InterruptedException e){
log.severe(e.getMessage());
}
String myToken = authTask.getResult();
main
: method in my serverpost("/token", (request, response) -> "Hello World");
FirebaseAuth auth = FirebaseAuth.getInstance();
String uid = UUID.randomUUID().toString();
post("/token", (request, response) -> auth.createCustomToken(uid));
createCustomToken
returns a Task<String>
and not a String
. So, I have to do:auth.createCustomToken(uid).addOnSuccessListener(new OnSuccessListener<String>() {
@Override
public void onSuccess(String s) {
}
});
post("/token", (request, response) -> auth.createCustomToken(uid).addOnSuccessListener(new OnSuccessListener<String>() {
@Override
public void onSuccess(String token) {
}
}));
Task<String>
. I need to return token
from the onSuccess()
method, but I can't since it's an inner class.Task<String> authTask = FirebaseAuth.getInstance().createCustomToken(uid);
try {
Tasks.await(authTask);
} catch (ExecutionException | InterruptedException e ) {
log.severe(e.getMessage());
}
String myToken = authTask.getResult();