从零了解Firebase并进行实战

发表于 更新于 分类于 Waline：

Firebase是个啥

服务端

  1. 添加依赖

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    <dependency>
        <groupId>com.google.firebase</groupId>
        <artifactId>firebase-admin</artifactId>
        <version>9.2.0</version>
    </dependency>

  2. 在Firebase控制台，点击项目设置->服务账号->Firebase Admin SDK->选择java->生成新的私钥等待下载成功，复制下载成功的文件到项目里面

  3. 创建FireBaseConfig.java，添加初始化代码

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    import com.google.auth.oauth2.GoogleCredentials;
    import com.google.firebase.FirebaseApp;
    import com.google.firebase.FirebaseOptions;
    import org.springframework.boot.CommandLineRunner;
    import org.springframework.stereotype.Component;
    import java.io.FileInputStream;
    import java.io.IOException;

    @Component
    public class FireBaseConfig implements CommandLineRunner {
        @Override
        public void run(String... args) throws Exception {
            initFireBase();
        }

        private void initFireBase() throws IOException {
            //协议开放 克服握手错误
            System.setProperty("https.protocols", "TLSv1,TLSv1.1,TLSv1.2");
            System.out.println("协议开放成功: "+System.getProperty("https.protocols"));
            //firebase初始化
            FileInputStream refreshToken = new FileInputStream("path/to/serviceAccountKey.json"); //上一步下载的文件(私钥json)
            FirebaseOptions options = FirebaseOptions.builder()
                    .setCredentials(GoogleCredentials.fromStream(refreshToken))
                    .setDatabaseUrl("https://<DATABASE_NAME>.firebaseio.com/")
                    .build();
            FirebaseApp.initializeApp(options);
            System.out.println("firebase初始化成功!!!");
        }
    }

  4. 创建工具类FireBaseUtils

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    import com.google.firebase.messaging.*;
    import java.util.Map;

    public class FireBaseUtils {
        public static String sendOne(String token, String title, String body, Map<String,String> data) throws FirebaseMessagingException {
            Message message = Message.builder()
                    .setToken(token)
    //                .setAndroidConfig(AndroidConfig.builder()
    //                        .setNotification(AndroidNotification.builder().setTitle(title).setBody(body).build()).build())
                    .setNotification(Notification.builder().setTitle(title).setBody(body).build())
                    .putAllData(data)
    //                .setNotification(Notification.builder().build())
                    .build();
            String result= FirebaseMessaging.getInstance().send(message);
            System.out.println("消息发送成功: "+result);
            return result;
    }

  5. 测试发送消息

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    @GetMapping("/send")
    public String send(){
        try {
            Map<String,String> data=new HashMap<>();
            data.put("allDataKey","allDataValue");
          	//设备的token由客户端传过来
            return FireBaseUtils.sendOne("dtgeiUDK<设备的token>RVhF9:APAi1_xR4JQt5dELt",
                    "我是标题","我是body",data);
        } catch (FirebaseMessagingException e) {
            throw new RuntimeException(e);
        }
    }

Firebase如何进行消息推送

  1. 在firebase控制台创建项目

  2. 在产品类别->吸引->Messaging界面，点击添加应用

  3. 在项目设置->常规->您的应用查看应用接入配置

    • web版本(未成功，应该是没有token的原因)

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      import { initializeApp } from "firebase/app";
      import { getAnalytics } from "firebase/analytics";
      import { getMessaging, onMessage } from "firebase/messaging"; // 接入messaging模块

      const firebaseConfig = {
        apiKey: "AIxxx9HY",
        authDomain: "fir-502c5.firebaseapp.com",
        projectId: "fir-502c5",
        storageBucket: "fir-502c5.appspot.com",
        messagingSenderId: "47xxxx14",
        appId: "1:471967859514:web:b1d4axx6cac0d748603",
        measurementId: "G-FxxK"
      };

      // Initialize Firebase
      const app = initializeApp(firebaseConfig);
      const analytics = getAnalytics(app);

      const messaging=getMessaging(app); // 接入messaging模块
      onMessage(messaging, (payload) => {
        console.log('Message received. ', payload);
      });

    • Android

      可以使用 android studio再带的firebase进行集成，点击tools->firebase后续跟着提示操作即可。

      下面介绍手动版本：

      1. 引入依赖

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        //在项目(project)build.gradle添加com.google.gms.google-services依赖
        plugins {
            id 'com.android.application' version '8.2.0' apply false
          //添加依赖
            id 'com.google.gms.google-services' version '4.3.15' apply false
        }

        //在模块(module)build.gradle添加com.google.gms.google-services依赖
        plugins {
            id 'com.android.application'
            id 'com.google.gms.google-services'
        }
        ....
        dependencies {
        		....
            implementation(platform("com.google.firebase:firebase-bom:32.3.1"))
            implementation("com.google.firebase:firebase-analytics")
            implementation("com.google.firebase:firebase-inappmessaging")
            implementation("com.google.firebase:firebase-inappmessaging-display")
        }

      2. 添加获取token的方法，服务端发送消息的时候需要该token，一般在设备登录的时候把token发给服务端

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        FirebaseMessaging.getInstance().getToken()
                .addOnCompleteListener(new OnCompleteListener<String>() {
                    @Override
                    public void onComplete(@NonNull Task<String> task) {
                        if (!task.isSuccessful()) {
                            Log.w(TAG, "Fetching FCM registration token failed", task.getException());
                            return;
                        }
                        // Get new FCM registration token
                        String token = task.getResult();
                        // Log and toast
                        String msg = "toke is: "+token;
                        Log.i(TAG, msg);
                        Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();
                    }
                });

      3. 添加接受消息的代码

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        import android.util.Log;
        import androidx.annotation.NonNull;
        import com.google.firebase.messaging.FirebaseMessagingService;
        import com.google.firebase.messaging.RemoteMessage;

        public class MyFirebaseMessagingService extends FirebaseMessagingService {
            private static final String TAG="MyFirebaseMessagingService";
            @Override
            public void onNewToken(@NonNull String token) {
                Log.i(TAG,"Refreshed token: " + token);
            }
            @Override
            public void onMessageReceived(@NonNull RemoteMessage message) {
                Log.d(TAG, "From: " + message.getFrom());
             		//From: 471967859514
                Log.d(TAG, "AllData: "+message.getData());
              	//AllData: {allDataKey=allDataValue}
                Log.d(TAG, "Notification title: "+message.getNotification().getTitle());
                //Notification title: 我是标题
                Log.d(TAG, "Notification body: "+message.getNotification().getBody());
                //Notification body: 我是body
            }
        }

  4. 制作首个宣传活动(或者新建宣传活动)