不确定我是否做错了什么，但使用这个 api https://www.firebase.com/docs/security/simple-login-email-password.html 我可以成功创建一个用户 - 根据返回消息，但我在 Forge 控制台的任何地方都看不到该用户。您如何知道注册了哪些用户？
我应该获取返回的用户 ID 并在 Firebase 中创建自己的用户对象，还是这种重复是不必要的。我确实需要添加一些额外的用户属性，所以也许我还是需要这样做。
【问题讨论】：
标签： firebase firebase-authentication
在 Firebase 身份验证（以前称为 Firebase SimpleLogin）中使用电子邮件/密码身份验证时，用户的电子邮件和密码组合与实际存储在 Firebase 中的数据分开安全存储。
Firebase 中的数据与用户的电子邮件/密码哈希组合之间的屏障是设计使然：我们希望让您更轻松地 (1) 开发应用程序，(2) 防止任何意外的用户凭据泄露， (3) 在如何将用户数据存储在 Firebase 中时，您仍然可以拥有完全的灵活性。
这意味着我们只存储电子邮件地址/密码哈希组合而不存储其他任何内容，因此您可以决定如何在 Firebase 中存储实际用户数据。正如您所建议的，您应该获取用户 ID 并将该数据存储在您的 Firebase 中的某个位置，例如 /users/$id，并使用 Firebase Security Rules Language 来确定对该数据的读/写访问权限。您的用户唯一的id 和email 已经在您将在编写规则时使用的auth 变量中。
【讨论】：
user.updateProfile 具有保存能力的方法displayName 和 photoURL?那么这些信息会存储在哪里呢？它没有保存在我的 Firestore 中 - 我检查过 - 所以我假设它在那个单独的数据库中。如果当前用户是唯一可以看到的人，那么这种方法的意义何在？
你可以使用admin.auth().listUsers来做到这一点
这是相关文档：https://firebase.google.com/docs/reference/admin/node/admin.auth.Auth.html#listusers
还有一个用法示例：https://firebase.google.com/docs/auth/admin/manage-users#list_all_users
function listAllUsers(nextPageToken) {
// List batch of users, 1000 at a time.
admin.auth().listUsers(1000, nextPageToken)
.then(function(listUsersResult) {
listUsersResult.users.forEach(function(userRecord) {
console.log('user', userRecord.toJSON());
});
if (listUsersResult.pageToken) {
// List next batch of users.
listAllUsers(listUsersResult.pageToken);
}
})
.catch(function(error) {
console.log('Error listing users:', error);
});
}
// Start listing users from the beginning, 1000 at a time.
listAllUsers();
【讨论】：
在这里，我创建了一个 Android 程序来执行 Rob 为 firebase 初学者（如我）所说的内容 out there.this程序首先存储signedUp或signedIn用户的用户名，然后将它们显示在listView中
SignInActivity.java
public class SignInActivity extends BaseActivity implements View.OnClickListener,View.OnKeyListener{
private DatabaseReference mDatabase;
public static FirebaseAuth mAuth;
private static final String TAG = "MainActivity";
EditText usernameField;
EditText passwordField;
TextView changeSignUpModeTextView;
Button signUpButton;
ImageView logo;
RelativeLayout relativeLayout;
Boolean signUpModeActive;
static ArrayList<String> userList = new ArrayList<>();
@Override
public void onStart() {
super.onStart();
// Check auth on Activity start
if (mAuth.getCurrentUser() != null) {
onAuthSuccess(mAuth.getCurrentUser());
}
}
@Override
public boolean onKey(View view, int i, KeyEvent keyEvent) {
if(i == keyEvent.KEYCODE_ENTER && keyEvent.getAction() == keyEvent.ACTION_DOWN){
signUpOrLogIn(view);
}
return false;
}
@Override
public void onClick(View view) {
if(view.getId() == R.id.changeSignUpMode){
if (signUpModeActive == true){
signUpModeActive = false;
changeSignUpModeTextView.setText("Sign Up");
signUpButton.setText("Log In");
}else{
signUpModeActive = true;
changeSignUpModeTextView.setText("Log In");
signUpButton.setText("Sign Up");
}
}else if(view.getId() == R.id.logo || view.getId() == R.id.relativeLayout){
InputMethodManager inm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
inm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(),0);
}
}
public void signUpOrLogIn(View view) {
showProgressDialog();
String email = usernameField.getText().toString().trim();
String password = passwordField.getText().toString().trim();
if (signUpModeActive == true) {
mAuth.createUserWithEmailAndPassword(email,password)
.addOnCompleteListener(MainActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
hideProgressDialog();
Toast.makeText(MainActivity.this, "createUserWithEmail:onComplete:" + task.isSuccessful(), Toast.LENGTH_SHORT).show();
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
if (!task.isSuccessful()) {
Toast.makeText(MainActivity.this, "Authentication failed." + task.getException().toString().substring(task.getException().toString().indexOf(" ")),
Toast.LENGTH_SHORT).show();
Log.i("Error", task.getException().toString());
} else {
onAuthSuccess(task.getResult().getUser());
showUserList();
}
}
});
} else {
mAuth.signInWithEmailAndPassword(email,password)
.addOnCompleteListener(MainActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
hideProgressDialog();
// If sign in fails, display a message to the user. If sign in succeeds
// the auth state listener will be notified and logic to handle the
// signed in user can be handled in the listener.
if (!task.isSuccessful()) {
// there was an error
Toast.makeText(MainActivity.this, task.getException().toString(),
Toast.LENGTH_LONG).show();
} else
{
onAuthSuccess(task.getResult().getUser());
showUserList();
}
}
});
}
}
public void showUserList(){
startActivity(new Intent(getApplicationContext(), UserList.class));
finish();
}
private void onAuthSuccess(FirebaseUser user) {
String username = usernameFromEmail(user.getEmail());
// Write new user
writeNewUser(user.getUid(), username, user.getEmail());
// Go to MainActivity
}
private String usernameFromEmail(String email) {
if (email.contains("@")) {
return email.split("@")[0];
} else {
return email;
}
}
private void writeNewUser(String userId, String name, String email) {
User user = new User(name, email);
mDatabase.child("users").child(userId).setValue(user);
ArrayList<String> userNames = new ArrayList<>();
userNames.add(name);
mDatabase.child("usernamelist").setValue(userNames);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAuth = FirebaseAuth.getInstance();
mDatabase = FirebaseDatabase.getInstance().getReference();
if(mAuth.getCurrentUser()!=null){
showUserList();
}
usernameField = (EditText) findViewById(R.id.username);
passwordField = (EditText) findViewById(R.id.password);
changeSignUpModeTextView = (TextView) findViewById(R.id.changeSignUpMode);
signUpButton = (Button) findViewById(R.id.signupbutton);
logo = (ImageView)findViewById(R.id.logo);
relativeLayout= (RelativeLayout)findViewById(R.id.relativeLayout);
signUpModeActive = true;
changeSignUpModeTextView.setOnClickListener(this);
usernameField.setOnKeyListener(this);
passwordField.setOnKeyListener(this);
logo.setOnClickListener(this);
relativeLayout.setOnClickListener(this);
}
}
UserList.java
public class UserList extends AppCompatActivity {
private static final String TAG = "UserList" ;
private DatabaseReference userlistReference;
private ValueEventListener mUserListListener;
ArrayList<String> usernamelist = new ArrayList<>();
ArrayAdapter arrayAdapter;;
ListView userListView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_list);
userlistReference = FirebaseDatabase.getInstance().getReference().child("usernamelist");
onStart();
userListView = (ListView) findViewById(R.id.userlistview);
}
@Override
protected void onStart() {
super.onStart();
final ValueEventListener userListener = new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
usernamelist = new ArrayList<>((ArrayList) dataSnapshot.getValue());
usernamelist.remove(usernameOfCurrentUser());
Log.i(TAG, "onDataChange: "+usernamelist.toString());
arrayAdapter = new ArrayAdapter(UserList.this,android.R.layout.simple_list_item_1,usernamelist);
userListView.setAdapter(arrayAdapter);
}
@Override
public void onCancelled(DatabaseError databaseError) {
Log.w(TAG, "onCancelled: ",databaseError.toException());
Toast.makeText(UserList.this, "Failed to load User list.",
Toast.LENGTH_SHORT).show();
}
};
userlistReference.addValueEventListener(userListener);
mUserListListener = userListener;
}
public String usernameOfCurrentUser()
{
String email = MainActivity.mAuth.getCurrentUser().getEmail();
if (email.contains("@")) {
return email.split("@")[0];
} else {
return email;
}
}
@Override
public void onStop() {
super.onStop();
// Remove post value event listener
if (mUserListListener != null) {
userlistReference.removeEventListener(mUserListListener);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case R.id.action_logout:
FirebaseAuth.getInstance().signOut();
startActivity(new Intent(this, MainActivity.class));
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
【讨论】：
我会尽可能简单地回答 只需使用以下代码将注册用户添加到您的数据库中
您也可以使用共享首选项将数据保存在本地，但其他用户无法使用。
在数据库中保存用户列表后，只需使用适配器从那里检索它
FirebaseDatabase.getInstance().getReference().child("my_user")
.child(task.getResult().getUser().getUid())
.child("username").setValue(autoCompleteTextView1.getText().toString());
【讨论】：
可以使用云功能来获取用户列表（查看文档firebase）。请注意，在以下示例中，custom claims 功能用于检查用户是否具有足够的权限。
// USERS: return full users list for admin
// >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
import * as admin from 'firebase-admin'
import * as functions from 'firebase-functions'
export const listUsers = functions.https.onCall((data, context) => {
// check if user is admin (true "admin" custom claim), return error if not
const isAdmin = context.auth.token.admin === true
if (!isAdmin) {
return { error: `Unauthorized.` }
}
return admin
.auth()
.listUsers()
.then((listUsersResult) => {
// go through users array, and deconstruct user objects down to required fields
const result = listUsersResult.users.map((user) => {
const { uid, email, photoURL, displayName, disabled } = user
return { uid, email, photoURL, displayName, disabled }
})
return { result }
})
.catch((error) => {
return { error: 'Error listing users' }
})
})
【讨论】：
您可以使用Google Identity Toolkit API 来获取您的Firebase 项目中所有注册用户的列表，此API 由Firebase CLI 使用，可以通过运行firebase auth:export results-file 来访问
确保身份工具包 API 已启用
firebase-users-list.js
const serviceAccount = require('path/to/firebase-sdk-json-service-account');
const googleapis = require('googleapis');
const identitytoolkit = googleapis.identitytoolkit('v3');
const authClient = new googleapis.auth.JWT(
serviceAccount.client_email,
null,
serviceAccount.private_key,
['https://www.googleapis.com/auth/firebase'],
null
);
authClient.authorize((err) => {
if (err) {
return console.error(err);
}
let nextPageToken = undefined;
let users = [];
const getAccounts = () => identitytoolkit.relyingparty.downloadAccount({
auth: authClient,
resource: {
targetProjectId: serviceAccount.project_id,
maxResults: 200,
nextPageToken: nextPageToken
}
}, (e, results) => {
if (e) {
return console.error(err);
}
users = users.concat(results.users);
if (results.nextPageToken) {
nextPageToken = results.nextPageToken;
return getAccounts();
} else {
console.log(users);
}
});
getAccounts();
});
【讨论】：
python中的用户列表：
from firebase_admin import credentials, db, auth
cred = credentials.Certificate('\path\to\serviceAccountKey.json')
default_app = firebase_admin.initialize_app(cred, {
"databaseURL": "https://data_base_url.firebaseio.com"
})
users = auth.list_users()
【讨论】：