// A bucket name consists of bucketname-appid. You must include the appid. You can view bucket names in the COS console. https://console.tencentcloud.com/cos5/bucket
String bucket = "examplebucket-1250000000";
PutBucketCORSRequest putBucketCORSRequest = new PutBucketCORSRequest(bucket);

CORSConfiguration.CORSRule corsRule = new CORSConfiguration.CORSRule();

// Configure the rule ID
corsRule.id = "123";
// Allowed origins, which support the wildcard *. The format is: protocol://domain[:port]
corsRule.allowedOrigin = "https://cloud.tencent.com";
// Set the validity period for results returned by OPTIONS requests
corsRule.maxAgeSeconds = 5000;

List<String> methods = new LinkedList<>();
methods.add("PUT");
methods.add("POST");
methods.add("GET");
// Allowed HTTP operations, for example: GET, PUT, HEAD, POST, DELETE
corsRule.allowedMethod = methods;

List<String> headers = new LinkedList<>();
headers.add("host");
headers.add("content-type");
// When sending an OPTIONS request, inform the server of the HTTP request headers that can be used in subsequent requests. These headers support the wildcard *.
corsRule.allowedHeader = headers;

List<String> exposeHeaders = new LinkedList<>();
exposeHeaders.add("x-cos-meta-1");
// Set custom headers from the server that the browser can receive
corsRule.exposeHeader = exposeHeaders;

putBucketCORSRequest.addCORSRule(corsRule);

cosXmlService.putBucketCORSAsync(putBucketCORSRequest,
        new CosXmlResultListener() {
    @Override
    public void onSuccess(CosXmlRequest request, CosXmlResult result) {
        PutBucketCORSResult putBucketCORSResult = (PutBucketCORSResult) result;
    }

    // If you call the API using kotlin, note that the exception in the callback method must be nullable. Otherwise, the onFail method will not be called, as follows:
    // The type of clientException is CosXmlClientException?, and the type of serviceException is CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest cosXmlRequest,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
        if (clientException != null) {
            clientException.printStackTrace();
        } else {
            serviceException.printStackTrace();
        }
    }
});

// A bucket name consists of bucketname-appid. You must include the appid. You can view bucket names in the COS console. https://console.tencentcloud.com/cos5/bucket
String bucket = "examplebucket-1250000000";
GetBucketCORSRequest getBucketCORSRequest = new GetBucketCORSRequest(bucket);
cosXmlService.getBucketCORSAsync(getBucketCORSRequest,
        new CosXmlResultListener() {
    @Override
    public void onSuccess(CosXmlRequest request, CosXmlResult result) {
        GetBucketCORSResult getBucketCORSResult = (GetBucketCORSResult) result;
    }

    // If you call the API using kotlin, note that the exception in the callback method must be nullable. Otherwise, the onFail method will not be called, as follows:
    // The type of clientException is CosXmlClientException?, and the type of serviceException is CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest cosXmlRequest,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
        if (clientException != null) {
            clientException.printStackTrace();
        } else {
            serviceException.printStackTrace();
        }
    }
});

// A bucket name consists of bucketname-appid. You must include the appid. You can view bucket names in the COS console. https://console.tencentcloud.com/cos5/bucket
String bucket = "examplebucket-1250000000";
DeleteBucketCORSRequest deleteBucketCORSRequest =
        new DeleteBucketCORSRequest(bucket);
cosXmlService.deleteBucketCORSAsync(deleteBucketCORSRequest,
        new CosXmlResultListener() {
    @Override
    public void onSuccess(CosXmlRequest request, CosXmlResult result) {
        DeleteBucketCORSResult deleteBucketCORSResult =
                (DeleteBucketCORSResult) result;
    }

    // If you call the API using kotlin, note that the exception in the callback method must be nullable. Otherwise, the onFail method will not be called, as follows:
    // The type of clientException is CosXmlClientException?, and the type of serviceException is CosXmlServiceException?
    @Override
    public void onFail(CosXmlRequest cosXmlRequest,
                       @Nullable CosXmlClientException clientException,
                       @Nullable CosXmlServiceException serviceException) {
        if (clientException != null) {
            clientException.printStackTrace();
        } else {
            serviceException.printStackTrace();
        }
    }
});