如何在Google App Engine (JAVA)中读取文件

<dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-storage</artifactId>
    <version>1.113.12</version>
</dependency>

import com.google.cloud.storage.Blob;
import com.google.cloud.storage.BlobId;
import com.google.cloud.storage.Storage;
import com.google.cloud.storage.StorageOptions;

public class FileReadExample {
    public static void main(String[] args) {
        // 从密钥文件创建Storage实例
        Storage storage = StorageOptions.newBuilder()
                .setCredentials(ServiceAccountCredentials.fromStream(new FileInputStream("path/to/keyfile.json")))
                .build()
                .getService();
        
        // 定义要读取的文件的Bucket和Object名称
        String bucketName = "your-bucket-name";
        String objectName = "your-object-name";
        
        // 创建BlobId对象
        BlobId blobId = BlobId.of(bucketName, objectName);
        
        // 通过BlobId从Google Cloud Storage中获取Blob对象
        Blob blob = storage.get(blobId);
        
        // 读取文件内容
        byte[] fileContent = blob.getContent();
        
        // 处理文件内容
        // ...
    }
}