gpt4 book ai didi

java - Java 应用程序的 Firebase 用户身份验证(非 Android)

转载 作者:行者123 更新时间:2023-12-01 18:38:22 25 4
gpt4 key购买 nike

我想使用 firebase 为我的 java 应用程序创建用户身份验证表单。连接实时数据库的依赖项可用,并且 Firebase Admin 的使用有详细记录 here .

但目前 Firebase Admin 仅支持 Node.js 的用户身份验证,记录为 here .

这是我的测试代码。

public class Login {
private JPanel jPanel;

public static void main(String[] args) {
// Show My Form
JFrame jFrame = new JFrame("Login");
jFrame.setContentPane(new Login().jPanel);
jFrame.pack();
jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
jFrame.setVisible(true);

// Firebase
FirebaseOptions options = null;
try {
options = new FirebaseOptions.Builder()
.setServiceAccount(new FileInputStream("xxx.json"))
.setDatabaseUrl("https://xxx.firebaseio.com/")
.build();
} catch (FileNotFoundException e) {
e.printStackTrace();
}

if (options != null) {
FirebaseApp.initializeApp(options);
DatabaseReference ref = FirebaseDatabase.getInstance().getReference("Clip");
ref.addValueEventListener(new ValueEventListener() {
public void onDataChange(DataSnapshot dataSnapshot) {
System.out.println("ClipText = [" + dataSnapshot.getValue() + "]");
}

public void onCancelled(DatabaseError databaseError) {

}
});
}
}
}

任何人都可以指导我如何为我的 java 应用程序创建用户身份验证(例如使用电子邮件和密码创建用户、登录)吗?

注意:我正在使用 Gradle。

最佳答案

基于此处的 REST API 文档:https://firebase.google.com/docs/reference/rest/auth/我创建了一个像这样的单例,以从电子邮件和密码中获取有效 token ,并使用 getAccountInfo 方法对其进行验证:

import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

public class FireBaseAuth {

private static final String BASE_URL = "https://www.googleapis.com/identitytoolkit/v3/relyingparty/";
private static final String OPERATION_AUTH = "verifyPassword";
private static final String OPERATION_REFRESH_TOKEN = "token";
private static final String OPERATION_ACCOUNT_INFO = "getAccountInfo";

private String firebaseKey;

private static FireBaseAuth instance = null;

protected FireBaseAuth() {
firebaseKey = "YOUR FIREBASE KEY HERE";
}

public static FireBaseAuth getInstance() {
if(instance == null) {
instance = new FireBaseAuth();
}
return instance;
}

public String auth(String username, String password) throws Exception {

HttpURLConnection urlRequest = null;
String token = null;

try {
URL url = new URL(BASE_URL+OPERATION_AUTH+"?key="+firebaseKey);
urlRequest = (HttpURLConnection) url.openConnection();
urlRequest.setDoOutput(true);
urlRequest.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
OutputStream os = urlRequest.getOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os, "UTF-8");
osw.write("{\"email\":\""+username+"\",\"password\":\""+password+"\",\"returnSecureToken\":true}");
osw.flush();
osw.close();

urlRequest.connect();

JsonParser jp = new JsonParser(); //from gson
JsonElement root = jp.parse(new InputStreamReader((InputStream) urlRequest.getContent())); //Convert the input stream to a json element
JsonObject rootobj = root.getAsJsonObject(); //May be an array, may be an object.

token = rootobj.get("idToken").getAsString();

} catch (Exception e) {
return null;
} finally {
urlRequest.disconnect();
}

return token;
}

public String getAccountInfo(String token) throws Exception {

HttpURLConnection urlRequest = null;
String email = null;

try {
URL url = new URL(BASE_URL+OPERATION_ACCOUNT_INFO+"?key="+firebaseKey);
urlRequest = (HttpURLConnection) url.openConnection();
urlRequest.setDoOutput(true);
urlRequest.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
OutputStream os = urlRequest.getOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(os, "UTF-8");
osw.write("{\"idToken\":\""+token+"\"}");
osw.flush();
osw.close();
urlRequest.connect();

JsonParser jp = new JsonParser(); //from gson
JsonElement root = jp.parse(new InputStreamReader((InputStream) urlRequest.getContent())); //Convert the input stream to a json element
JsonObject rootobj = root.getAsJsonObject(); //May be an array, may be an object.

email = rootobj.get("users").getAsJsonArray().get(0).getAsJsonObject().get("email").getAsString();

} catch (Exception e) {
return null;
} finally {
urlRequest.disconnect();
}

return email;

}

}

这不允许您动态创建用户,但假设已经在 Firebase 上创建了用户

关于java - Java 应用程序的 Firebase 用户身份验证(非 Android),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59995338/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com