[root@VM_centos /data/home/]# curl http://cos.ap-guangzhou.myqcloud.com -v
* About to connect() to cos.ap-guangzhou.myqcloud.com port 80 (#0)
*   Trying 9.*.*.*...
* Connected to cos.ap-guangzhou.myqcloud.com (9.*.*.*) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl/*.*.0
> Host: cos.ap-guangzhou.myqcloud.com
> Accept: */*
> 
< HTTP/1.1 403 Forbidden
< Content-Type: application/xml
< Content-Length: XXX
< Connection: keep-alive
< Date: XXX XXX GMT
< Server: tencent-cos
< x-cos-request-id: NWE2MWQ5MjZfMTBhYzM1MGFfMTA5ODVfMTVj****
< 
<?xml version='1.0' encoding='utf-8' ?>
<Error>
        <Code>AccessDenied</Code>
        <Message>Check auth failure because signture empty.</Message>
        <ServerTime>XXX XXX</ServerTime>
        <Resource>cos.ap-guangzhou.myqcloud.com/</Resource>
        <RequestId>NWE2MWQ5MjZfMTBhYzM1MGFfMTA5ODVfMTVj****==</RequestId>    
</Error>

* Connection #0 to host cos.ap-guangzhou.myqcloud.com left intact

[root@VM_centos /data/home/]# curl https://cos.ap-guangzhou.myqcloud.com -vk
* About to connect() to cos.ap-guangzhou.myqcloud.com port 443 (#0)
*   Trying 9.*.*.*...
* Connected to cos.ap-guangzhou.myqcloud.com (9.*.*.*) port 443 (#0)
* Initializing NSS with certpath: XXXX
* skipping SSL peer certificate verification
* SSL connection using ******
* Server certificate:
*       subject: CN=*.*.*.
*       start date: XXX XXX GMT
*       expire date: XXX XXX GMT
*       common name: *.cos.ap-guangzhou.myqcloud.com
*       issuer: XXX
> GET / HTTP/1.1
> User-Agent: curl/*.*.0
> Host: cos.ap-guangzhou.myqcloud.com
> Accept: */*
> 
< HTTP/1.1 403 Forbidden
< Content-Type: application/xml
< Content-Length: XXX
< Connection: keep-alive
< Date: XXX XXX GMT
< Server: tencent-cos
< x-cos-request-id: NWE2MWQ5MjZfMTBhYzM1MGFfMTA5ODVfMTVj****
< 
<?xml version='1.0' encoding='utf-8' ?>
<Error>
        <Code>AccessDenied</Code>
        <Message>Check auth failure because signture empty.</Message>
        <ServerTime>XXX XXX</ServerTime>
        <Resource>cos.ap-guangzhou.myqcloud.com/</Resource>
        <RequestId>NWE2MWQ5MjZfMTBhYzM1MGFfMTA5ODVfMTVj****</RequestId>        
</Error>

* Connection #0 to host cos.ap-guangzhou.myqcloud.com left intact

// 1 Initialize user identity information (secretId, secretKey).
// To view and manage SECRETID and SECRETKEY, log in to the CAM console at https://console.tencentcloud.com/cam/capi
String secretId = System.getenv("secretId");//User's SecretId. It is recommended to use sub-account keys and follow the principle of least privilege for authorization to reduce usage risks. For obtaining sub-account keys, see https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1
String secretKey = System.getenv("secretKey");//User's SecretKey. It is recommended to use sub-account keys, follow the principle of least privilege for authorization to reduce usage risks. For obtaining sub-account keys, see https://www.tencentcloud.com/document/product/598/37140?from_cn_redirect=1
COSCredentials cred = new BasicCOSCredentials(secretId, secretKey);
// 2 Set the bucket region. For COS region abbreviations, see https://www.tencentcloud.com/document/product/436/6224
// The clientConfig includes set methods for configuring region, https (defaulting to http), timeout, proxy, etc. For usage, refer to the source code or the Java SDK section in the FAQs.
Region region = new Region("COS_REGION");
ClientConfig clientConfig = new ClientConfig(region);
// It is recommended to configure the use of the https protocol here.
// Starting from version 5.6.54, https is used by default
clientConfig.setHttpProtocol(HttpProtocol.https);
// 3 Generating a cos client
COSClient cosClient = new COSClient(cred, clientConfig);


import java.util.ArrayList;
import java.util.List;

import com.qcloud.cos.COSClient;
import com.qcloud.cos.ClientConfig;
import com.qcloud.cos.auth.BasicCOSCredentials;
import com.qcloud.cos.auth.COSCredentials;
import com.qcloud.cos.exception.CosClientException;
import com.qcloud.cos.exception.CosServiceException;
import com.qcloud.cos.model.Bucket;
import com.qcloud.cos.model.ListBucketsRequest;
import com.qcloud.cos.model.ListBucketsResult;
import com.qcloud.cos.region.Region;

public class BucketDemo {
    private static String secretId = System.getenv("SECRETID");
    private static String secretKey = System.getenv("SECRETKEY");
    private static String bucketName = System.getenv("BUCKET_NAME");
    private static String cosRegion = System.getenv("REGION");
    private static COSClient cosClient = createCli();

    public static void main(String[] args) {
        try {
            listBuckets();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            cosClient.shutdown();
        }
    }

    private static COSClient createCli() {
        // 1 Initializing user identity information (appid, secretId, secretKey)
        COSCredentials cred = new BasicCOSCredentials(secretId, secretKey);
        // 2 Setting the region of the bucket. For abbreviations of COS regions, refer to https://www.qcloud.com/document/product/436/6224
        ClientConfig clientConfig = new ClientConfig(new Region(cosRegion));
        // 3 Generating a COS client
        COSClient cosclient = new COSClient(cred, clientConfig);

        return cosclient;
    }

    private static void listBuckets() {
        List<Bucket> buckets = cosClient.listBuckets();

        for (Bucket bucket : buckets) {
            System.out.println(bucket.getName());
            System.out.println(bucket.getLocation());
            System.out.println(bucket.getOwner());
            System.out.println(bucket.getType());
            System.out.println(bucket.getBucketType());
        }
    }
}


import java.io.File;

import com.qcloud.cos.COSClient;
import com.qcloud.cos.ClientConfig;
import com.qcloud.cos.auth.BasicCOSCredentials;
import com.qcloud.cos.auth.COSCredentials;
import com.qcloud.cos.exception.CosClientException;
import com.qcloud.cos.exception.CosServiceException;
import com.qcloud.cos.model.PutObjectRequest;
import com.qcloud.cos.model.PutObjectResult;
import com.qcloud.cos.region.Region;

public class PutObjectDemo {
    private static String secretId = System.getenv("SECRETID");
    private static String secretKey = System.getenv("SECRETKEY");
    private static String bucketName = System.getenv("BUCKET_NAME");
    private static String region = System.getenv("REGION");
    private static COSClient cosClient = createCli();

    public static void main(String[] args) {
        try {
            putLocalFileDemo();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            cosClient.shutdown();
        }
    }

    private static COSClient createCli() {
        // Initialize user identity information (secretId, secretKey)
        COSCredentials cred = new BasicCOSCredentials(secretId,secretKey);
        // Set the region of the bucket. For COS region abbreviations, refer to https://www.qcloud.com/document/product/436/6224
        ClientConfig clientConfig = new ClientConfig(new Region(region));
        // Generate a cos client
        return new COSClient(cred, clientConfig);
    }

    private static void putLocalFileDemo() {
        String key = "abc/abc.txt";
        String localPath = "abc.txt";

        PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, key, new File(localPath));
        try {
            PutObjectResult putObjectResult = cosClient.putObject(putObjectRequest);
            System.out.println(putObjectResult.getRequestId());
        } catch (CosServiceException cse) {
            cse.printStackTrace();
        } catch (CosClientException cce) {
            cce.printStackTrace();
        }
    }
}


import java.util.List;

import com.qcloud.cos.COSClient;
import com.qcloud.cos.ClientConfig;
import com.qcloud.cos.auth.BasicCOSCredentials;
import com.qcloud.cos.auth.COSCredentials;
import com.qcloud.cos.exception.CosClientException;
import com.qcloud.cos.exception.CosServiceException;
import com.qcloud.cos.model.COSObjectSummary;
import com.qcloud.cos.model.COSVersionSummary;
import com.qcloud.cos.model.ListObjectsRequest;
import com.qcloud.cos.model.ListVersionsRequest;
import com.qcloud.cos.model.ObjectListing;
import com.qcloud.cos.model.VersionListing;
import com.qcloud.cos.region.Region;

public class ListObjectsDemo {
    private static String secretId = System.getenv("SECRETID");
    private static String secretKey = System.getenv("SECRETKEY");
    private static String bucketName = System.getenv("BUCKET_NAME");
    private static String region = System.getenv("REGION");
    private static COSClient cosClient = createClient();

    public static void main(String[] args) {
        try {
            listObjectsVersions();
            //listObjectsDemo();
            //listAllObjects();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            cosClient.shutdown();
        }
    }

    private static COSClient createClient() {
        // Initialize user identity information (secretId, secretKey)
        COSCredentials cred = new BasicCOSCredentials(secretId,secretKey);
        // Set the region of the bucket. For COS region abbreviations, refer to https://www.qcloud.com/document/product/436/6224
        ClientConfig clientConfig = new ClientConfig(new Region(region));
        // Generate a cos client
        COSClient cosclient = new COSClient(cred, clientConfig);

        return cosclient;
    }

    private static void listObjectsDemo() {
        ListObjectsRequest listObjectsRequest = new ListObjectsRequest();
        // Setting the bucket name
        listObjectsRequest.setBucketName(bucketName);
        // prefix means the key of the listed object starts with prefix.
        listObjectsRequest.setPrefix("");
        // Setting the maximum number of objects to be traversed, with a maximum number of 1000 objects supported by a listobject
        listObjectsRequest.setMaxKeys(1000);
        // listObjectsRequest.setDelimiter("/");
        ObjectListing objectListing = null;
        try {
            objectListing = cosClient.listObjects(listObjectsRequest);
        } catch (CosServiceException e) {
            e.printStackTrace();
        } catch (CosClientException e) {
            e.printStackTrace();
        }
        // common prefix indicates the path truncated by delimiter. If delimiter is set to /, common prefix indicates the path of all subdirectories.
        List<String> commonPrefixs = objectListing.getCommonPrefixes();

        // object summary represents a list of all listed objects.
        List<COSObjectSummary> cosObjectSummaries = objectListing.getObjectSummaries();
        for (COSObjectSummary cosObjectSummary : cosObjectSummaries) {
            // File path key
            String key = cosObjectSummary.getKey();
            // File etag
            String etag = cosObjectSummary.getETag();
            // Length of the file
            long fileSize = cosObjectSummary.getSize();
            // File storage type
            String storageClasses = cosObjectSummary.getStorageClass();

            System.out.println("key: " + key);
        }
    }

    // To obtain more than the maxkey number of objects or retrieve all objects, you need to loop through listobject calls, using the next marker returned from the previous call as the marker for the next call.
    // Until the returned truncated is false
    private static void listAllObjects() {
        ListObjectsRequest listObjectsRequest = new ListObjectsRequest();
        // Setting the bucket name
        listObjectsRequest.setBucketName(bucketName);
        // prefix means the key of the listed object starts with prefix.
        listObjectsRequest.setPrefix("");
        // deliter represents the delimiter. If it is set to /, it means listing the objects in the current directory. If it is set to null, it means listing all objects.
        listObjectsRequest.setDelimiter("");
        // Setting the maximum number of objects to be traversed, with a maximum number of 1000 objects supported by a listobject
        listObjectsRequest.setMaxKeys(1000);
        ObjectListing objectListing = null;
        do {

            try {
                objectListing = cosClient.listObjects(listObjectsRequest);
            } catch (CosServiceException e) {
                e.printStackTrace();
                return;
            } catch (CosClientException e) {
                e.printStackTrace();
                return;
            }
            // common prefix indicates the path truncated by delimiter. If delimiter is set to /, common prefix indicates the path of all subdirectories.
            List<String> commonPrefixs = objectListing.getCommonPrefixes();

            // object summary represents a list of all listed objects.
            List<COSObjectSummary> cosObjectSummaries = objectListing.getObjectSummaries();
            for (COSObjectSummary cosObjectSummary : cosObjectSummaries) {
                // File path key
                String key = cosObjectSummary.getKey();
                // File etag
                String etag = cosObjectSummary.getETag();
                // Length of the file
                long fileSize = cosObjectSummary.getSize();
                // File storage type
                String storageClasses = cosObjectSummary.getStorageClass();
            }

            String nextMarker = objectListing.getNextMarker();
            listObjectsRequest.setMarker(nextMarker);
        } while (objectListing.isTruncated());
    }

    private static void listObjectsVersions() {
        ListVersionsRequest listVersionsRequest = new ListVersionsRequest();
        listVersionsRequest.setBucketName(bucketName);
        listVersionsRequest.setPrefix("");

        VersionListing versionListing = null;

        do {
            try {
                versionListing = cosClient.listVersions(listVersionsRequest);
            } catch (CosServiceException e) {
                e.printStackTrace();
                return;
            } catch (CosClientException e) {
                e.printStackTrace();
                return;
            }

            List<COSVersionSummary> cosVersionSummaries = versionListing.getVersionSummaries();
            for (COSVersionSummary cosVersionSummary : cosVersionSummaries) {
                System.out.println(cosVersionSummary.getKey() + ":" + cosVersionSummary.getVersionId());
            }

            String keyMarker = versionListing.getNextKeyMarker();
            String versionIdMarker = versionListing.getNextVersionIdMarker();

            listVersionsRequest.setKeyMarker(keyMarker);
            listVersionsRequest.setVersionIdMarker(versionIdMarker);

        } while (versionListing.isTruncated());
    }
}