java - 无法使用 Java 在 Amazon S3 中上传文件

Question

我是 S3 的初学者，我想用它来存储我计算机的某些文件。我用 Java 编写了一个小程序来上传我所有的文件和文件夹，但我有这个异常(exception):

    Infos: Received error response: Status Code: 403, AWS Request ID: F75DC5496B071F7D, AWS Error Code: SignatureDoesNotMatch, AWS Error Message: The request signature we calculated does not match the signature you provided. Check your key and signing method., S3 Extended Request ID: XtRqjEuUmygswUxFUophRudYKbwi4OY4MK9QnYS4DMrH6JrHZXihUEC4mLZbPqz4
Exception in thread "main" Status Code: 403, AWS Request ID: F75DC5496B071F7D, AWS Error Code: SignatureDoesNotMatch, AWS Error Message: The request signature we calculated does not match the signature you provided. Check your key and signing method., S3 Extended Request ID: XtRqjEuUmygswUxFUophRudYKbwi4OY4MK9QnYS4DMrH6JrHZXihUEC4mLZbPqz4
    at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:538)
    at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:283)
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:168)
    at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:2555)
    at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1044)
    at com.socialite.s3export.S3Export.parseDirectory(S3Export.java:89)
    at com.socialite.s3export.S3Export.parseDirectory(S3Export.java:73)
    at com.socialite.s3export.S3Export.parse(S3Export.java:48)
    at com.socialite.s3export.S3Export.main(S3Export.java:122)

我确定我向 SDK 提供了正确的凭据。为了测试目的，我使用了之前程序中的相同凭据并且它起作用了。我可以创建存储桶，但无法在其中存储对象。在我的代码中，我使用 PutObjectRequest 来存储对象。

下面是我如何初始化我的 amazon S3 对象:

AmazonS3 s3 = new AmazonS3Client(new PropertiesCredentials(
            S3Export.class                      .getResourceAsStream("AwsCredentials.properties")));

上传代码:

private void parseDirectory(File fin, File fdefault, String out)
            throws FileNotFoundException {

        System.out.println("processing .." + fin.getName());

        File[] files = fin.listFiles();

        PrintWriter pw = new PrintWriter(fdefault);

        for (File f : files) {

            String key = UUID.randomUUID().toString();

            String name = "";

            PutObjectRequest por = null;

            if (f.isDirectory()) {

                name = "d_" + f.getName() + ".properties";

                File metadata = new File(out + name);

                parseDirectory(f, metadata, out);

                pw.println(key + "=" + name);

                //upload to s3
                por = new PutObjectRequest(this.bucketName, key, metadata);

            } else {

                name = f.getName();

                pw.println(key + "=" + name);

                por = new PutObjectRequest(this.bucketName, key, f);

            }


            this.amazonS3.putObject(por);
        }
        pw.close();
    }

我的代码在这一行失败:this.amazonS3.putObject(por);。

有人可以解释我的代码有什么问题吗？

Answer 1

我终于找到了问题的答案。事实是在初始化时，我传递了一个错误的存储桶名称，并且我使用了不同的名称来发出请求。就这样。