Merge pull request #144 from Hanaro-trip-together-bank/feature/dues_paid

refactor: fcm 수정

src/main/java/com/hanaro/triptogether/common/firebase/FirebaseConfig.java

@@ -9,19 +9,28 @@
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.util.ResourceUtils;
 
+import java.io.ByteArrayInputStream;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
 
 @Configuration
 public class FirebaseConfig {
     @Bean
     public FirebaseApp firebaseApp() throws IOException {
-        InputStream refreshToken = new ClassPathResource("./triptogether-e7bac-firebase-adminsdk-peiki-127517aa66.json").getInputStream();
+
+        InputStream resource = new ClassPathResource("./triptogether-e7bac-firebase-adminsdk-peiki-127517aa66.json").getInputStream();
+        String jsonString = new String(resource.readAllBytes(), StandardCharsets.UTF_8);
+
+        // \n을 실제 줄 바꿈으로 변환
+        String formattedJson = jsonString.replace("\\n", "\n");
+
+        InputStream formattedJsonStream = new ByteArrayInputStream(formattedJson.getBytes(StandardCharsets.UTF_8));
 
         FirebaseOptions options = FirebaseOptions
                 .builder()
-                .setCredentials(GoogleCredentials.fromStream(refreshToken))
+                .setCredentials(GoogleCredentials.fromStream(formattedJsonStream))
                 .build();
         return FirebaseApp.initializeApp(options);
     }