AWS S3 Java SDK-下载文件帮助

  • Z时代
  • 2024-01-10
  • 分类：问答

以下代码仅适用于从S3中的存储桶下载文本文件。这不适用于图像。有使用AWS开发工具包管理下载/类型的简便方法吗？文档中包含的示例并不明显。谢谢！

AWSCredentials myCredentials = new BasicAWSCredentials(
       String.valueOf(Constants.act), String.valueOf(Constants.sk)); 
AmazonS3Client s3Client = new AmazonS3Client(myCredentials);        
S3Object object = s3Client.getObject(new GetObjectRequest("bucket", "file"));
BufferedReader reader = new BufferedReader(new InputStreamReader(
       object.getObjectContent()));
File file = new File("localFilename");      
Writer writer = new OutputStreamWriter(new FileOutputStream(file));
while (true) {          
     String line = reader.readLine();           
     if (line == null)
          break;
     writer.write(line + "\n");
}
writer.close();

回答：

而不是Reader和Writer类，你应该使用InputStream和OutputStream类：

InputStream reader = new BufferedInputStream(
   object.getObjectContent());
File file = new File("localFilename");      
OutputStream writer = new BufferedOutputStream(new FileOutputStream(file));
int read = -1;
while ( ( read = reader.read() ) != -1 ) {
    writer.write(read);
}
writer.flush();
writer.close();
reader.close();

以上是 AWS S3 Java SDK-下载文件帮助 的全部内容， 来源链接： utcz.com/qa/420485.html

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