Question

我使用“kreait / firebase-php”在Laravel中生成Firebase自定义令牌。我生成自定义令牌的代码如下：

public function getToken(){

    $user = Auth::user();

    $serviceAccount=ServiceAccount::fromJsonFile(__DIR__.'/service_account.json');

    $firebase = (new Factory)
                ->withServiceAccount($serviceAccount)
                ->create();

    $customToken=$firebase->getAuth()->createCustomToken("id");

    return response()->json(["custom_token"=>$customToken]);
}

我没有任何问题地获得JWT令牌。但是当我尝试在android中使用此令牌登录时，我得到令牌格式不正确的错误。我的Android代码如下：

firebaseAuth.signInWithCustomToken(customToken)
            .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if (task.isSuccessful()) {
                        // Sign in success, update UI with the signed-in user's information
                        Log.d("SignIn", "signInWithCustomToken:success");
                        FirebaseUser user = firebaseAuth.getCurrentUser();
                        Log.e("current User is",user.getUid());
                    } else {

                        Log.w("Sign iN failed", "signInWithCustomToken:failure", task.getException());
                        Toast.makeText(MainActivity.this, "Authentication failed.",
                                Toast.LENGTH_SHORT).show();
                       /// updateUI(null);
                    }
                }
            });

Logcat输出为：

com.google.firebase.auth.FirebaseAuthInvalidCredentialsException: The custom token format is incorrect. Please check the documentation.
                                                                    at com.google.android.gms.internal.zzdxm.zzao(Unknown Source)
                                                                    at com.google.android.gms.internal.zzdwn.zza(Unknown Source)
                                                                    at com.google.android.gms.internal.zzdxx.zzap(Unknown Source)
                                                                    at com.google.android.gms.internal.zzdya.onFailure(Unknown Source)
                                                                    at com.google.android.gms.internal.zzdxo.onTransact(Unknown Source)
                                                                    at android.os.Binder.execTransact(Binder.java:565)

请帮我解决此错误。谢谢。

Answer 1

生成的自定义令牌是Lcobucci\JWT\Token的一个实例 - 当您将其传递给response()->json(...)时，json()方法尝试json_encode()对象而不是使用其字符串表示，这是行不通的。

因此，如果要使用SDK的某个方法返回的JWT令牌的字符串表示形式，则需要将对象强制转换为字符串：

return response()->json(["custom_token" => (string) $customToken]);

com.google.firebase.auth.FirebaseAuthInvalidCredentialsException自定义标记格式不正确。请查看文档PHP-Laravel

1 个答案: