Question

我正在尝试在Java Web应用程序中实现文件上载。当用户通过用户界面上传文件时，我希望将其存储在亚马逊亚马逊s3存储中。

以下是我的后端代码：

@PostMapping("/upload-file")
public String saveFile(@RequestParam("name") String name, @RequestParam("file")MultipartFile file, RedirectAttributes redirectAttributes){

    AWSCredentials credentials = new BasicAWSCredentials("user", "psw");

    AmazonS3 s3Client = new AmazonS3Client(credentials);

    String bucketName = "kfib";

    s3Client.createBucket(bucketName);

    s3Client.setRegion(com.amazonaws.regions.Region.getRegion(Regions.EU_WEST_1));


    ObjectMetadata md = new ObjectMetadata();
    md.setContentType("application/pdf");

// md.set

    try{
        InputStream inputStream = file.getInputStream();

        s3Client.putObject(new PutObjectRequest(bucketName, name, inputStream, md).withCannedAcl(CannedAccessControlList.PublicRead));

        S3Object s3Object = s3Client.getObject(new GetObjectRequest(bucketName, name));

        log.info("Url of the image:\n");
        log.info(s3Object.getObjectContent().getHttpRequest().getURI().toString());

    }catch(IOException e){
        e.printStackTrace();
    }


    log.info("upload called with post method...");

    return "redirect:/admin/posts";
}

如果我将它们上传到默认区域，我可以上传到文件。但是，我希望将我的文件存储在另一台服务器上。我在欧盟地区有一个存储桶，如果我尝试使用上面的代码上传某些内容，我会收到以下错误代码：

com.amazonaws.services.s3.model.AmazonS3Exception: The authorization header is malformed; the region 'us-east-1' is wrong; expecting 'eu-central-1' (Service: Amazon S3; Status Code: 400; Error Code: AuthorizationHeaderMalformed; Request ID: 8EF630B5F0224C4F)

看来这一行

s3Client.setRegion(com.amazonaws.regions.Region.getRegion(Regions.EU_WEST_1));

没有任何影响。我做错了什么？

Answer 1

我遇到了同样的问题，但以下情况对我有用 -

AmazonS3 s3Client = AmazonS3ClientBuilder.standard（）。withRegion（Regions.US_EAST_1）.build（）;

Answer 2

用于全局存储段访问

您可以将withForceGlobalBucketAccessEnabled标志设置为true

喜欢

AmazonS3 s3client = AmazonS3ClientBuilder
            .standard()
            .withCredentials(new AWSStaticCredentialsProvider(credentials))
            .withForceGlobalBucketAccessEnabled(true)
            .build();

如何为amazonS3客户端设置区域？

2 个答案: