下面是上面嵌入的python脚本的boto3版本。

import sys
import boto3

s3 = boto3.resource("s3")
s3bucket = s3.Bucket(sys.argv[1])
size = 0
totalCount = 0

for key in s3bucket.objects.all():
    totalCount += 1
    size += key.size

print("total size:")
print("%.3f GB" % (size * 1.0 / 1024 / 1024 / 1024))
print("total count:")
print(totalCount)

如果您在Windows上使用AWS CLI，您可以使用PowerShell中的measurement - object来获得文件的总数，就像*nix上的wc -l一样。

PS C:\> aws s3 ls s3://mybucket/ --recursive | Measure-Object

Count    : 25
Average  :
Sum      :
Maximum  :
Minimum  :
Property :

希望能有所帮助。

以下是如何使用java客户端。

<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk-s3</artifactId>
    <version>1.11.519</version>
</dependency>

import com.amazonaws.ClientConfiguration;
import com.amazonaws.Protocol;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.ObjectListing;

public class AmazonS3Service {

    private static final String S3_ACCESS_KEY_ID = "ACCESS_KEY";
    private static final String S3_SECRET_KEY = "SECRET_KEY";
    private static final String S3_ENDPOINT = "S3_URL";

    private AmazonS3 amazonS3;

    public AmazonS3Service() {
        ClientConfiguration clientConfiguration = new ClientConfiguration();
        clientConfiguration.setProtocol(Protocol.HTTPS);
        clientConfiguration.setSignerOverride("S3SignerType");
        BasicAWSCredentials credentials = new BasicAWSCredentials(S3_ACCESS_KEY_ID, S3_SECRET_KEY);
        AWSStaticCredentialsProvider credentialsProvider = new AWSStaticCredentialsProvider(credentials);
        AmazonS3ClientBuilder.EndpointConfiguration endpointConfiguration = new AmazonS3ClientBuilder.EndpointConfiguration(S3_ENDPOINT, null);
        amazonS3 = AmazonS3ClientBuilder.standard().withCredentials(credentialsProvider).withClientConfiguration(clientConfiguration)
                .withPathStyleAccessEnabled(true).withEndpointConfiguration(endpointConfiguration).build();
    }

    public int countObjects(String bucketName) {
        int count = 0;
        ObjectListing objectListing = amazonS3.listObjects(bucketName);
        int currentBatchCount = objectListing.getObjectSummaries().size();
        while (currentBatchCount != 0) {
            count += currentBatchCount;
            objectListing = amazonS3.listNextBatchOfObjects(objectListing);
            currentBatchCount = objectListing.getObjectSummaries().size();
        }
        return count;
    }
}

使用AWS CLI

aws s3 ls s3://mybucket/ --recursive | wc -l 

or

aws cloudwatch get-metric-statistics \
  --namespace AWS/S3 --metric-name NumberOfObjects \
  --dimensions Name=BucketName,Value=BUCKETNAME \
              Name=StorageType,Value=AllStorageTypes \
  --start-time 2016-11-05T00:00 --end-time 2016-11-05T00:10 \
  --period 60 --statistic Average

注意:上面的cloudwatch命令似乎适用于某些人，而不适用于其他人。讨论地点:https://forums.aws.amazon.com/thread.jspa?threadID=217050

使用AWS Web控制台

您可以查看cloudwatch的度量部分，以获得存储的对象的大约数量。

我有大约5000万个产品，使用aws s3 ls花了一个多小时来计数

转到AWS计费，然后是报表，然后是AWS使用情况报表。 选择Amazon Simple Storage Service，然后选择Operation StandardStorage。 然后，您可以下载一个CSV文件，该文件包含StorageObjectCount的UsageType，该文件列出每个桶的项目计数。

2021的答案

该信息现在显示在AWS仪表板中。只需导航到桶并单击Metrics选项卡。