java - 在AWS的S3中上传文件

Question

我正在编写以下代码在 s3 中上传文件:

String filePath=KeyProvider.localFolerPath + KeyProvider.suffix +KeyProvider.FileNameToUpload; 

// upload file to folder and set it to public
String fileName = folderName + KeyProvider.suffix +KeyProvider.remoteFileName ;
s3client.putObject(
            new PutObjectRequest(bucketName, fileName, new File(filePath))
                    .withCannedAcl(CannedAccessControlList.PublicReadWrite));`

它抛出类似

的错误

com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied

请建议我在单独的常量文件中提供存储桶名称 key 和 secret 的错误在哪里。

谢谢..

Answer 1

你查过亚马逊的文件了吗？

而且，要小心。您需要为 s3 客户端设置 access_key 和 access_secret 字符串。

• Performing Operations on Amazon S3 Objects

例子

import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.AmazonServiceException;

// "credentialsProvider" will be created by some classes for example "AWSStaticCredentialsProvider"
//
// BasicAWSCredentials cred = new BasicAWSCredentials("xxxxx", "yyyyy");
// AWSStaticCredentialsProvider credentialsProvider = new AWSStaticCredentialsProvider(cred);
AmazonS3 s3 = AmazonS3ClientBuilder.standard().withCredentials(credentialsProvider).build();

try {
    s3.putObject(bucket_name, key_name, file_path);
} catch (AmazonServiceException e) {
    System.err.println(e.getErrorMessage());
    System.exit(1);
}

编辑

S3 策略可以根据凭据或 IP 地址处理拒绝/允许访问。你配置这样的策略吗？