Sending an OPTIONS Request to a Bucket (SDK for Java)

import com.obs.services.ObsClient;
import com.obs.services.exception.ObsException;
import com.obs.services.model.OptionsInfoRequest;
import com.obs.services.model.OptionsInfoResult;
public class OptionsBucket {
    public static void main(String[] args) {
        // Obtain an AK/SK pair using environment variables or import the AK/SK pair in other ways. Using hard coding may result in leakage.
        // Obtain an AK/SK pair on the management console.
        String ak = System.getenv("ACCESS_KEY_ID");
        String sk = System.getenv("SECRET_ACCESS_KEY_ID");
        // (Optional) If you are using a temporary AK/SK pair and a security token to access OBS, you are not advised to use hard coding, which may result in information leakage.
        // Obtain an AK/SK pair and a security token using environment variables or import them in other ways.
        // String securityToken = System.getenv("SECURITY_TOKEN");
        // Enter the endpoint corresponding to the bucket. CN-Hong Kong is used here as an example. Replace it with the one currently in use.
        String endPoint = "https://obs.ap-southeast-1.myhuaweicloud.com";
        // Obtain an endpoint using environment variables or import it in other ways.
        //String endPoint = System.getenv("ENDPOINT");

        // Create an ObsClient instance.
        // Use a permanent AK/SK pair to initialize the client.
        ObsClient obsClient = new ObsClient(ak, sk, endPoint);
        // Use a temporary AK/SK pair and security token to initialize the client.
        // ObsClient obsClient = new ObsClient(ak, sk, securityToken, endPoint);
        try {
            String exampleBucket = "exampleBucket";
            OptionsInfoRequest request = new OptionsInfoRequest(exampleBucket);
            // Specify the origin (usually a domain name) of the cross-origin request.
            request.setOrigin("http://www.example.com");
            // HTTP methods allowed in the request. Multiple methods are allowed.
            request.setRequestMethod(Arrays.asList("GET", "PUT"));
            // HTTP header allowed in the request. Multiple headers are allowed.
            request.setRequestHeaders(Collections.singletonList("Authorization"));
            OptionsInfoResult result = obsClient.optionsBucket(request);
            System.out.println("OptionsBucket successfully");
            System.out.println("\tAllowOrigin: " + result.getAllowOrigin());
            System.out.println("\tAllowMethods: " + result.getAllowMethods());
            System.out.println("\tAllowHeaders: " + result.getAllowHeaders());
            System.out.println("\tExposeHeaders: " + result.getExposeHeaders());
            System.out.println("\tMaxAge: " + result.getMaxAge());
        } catch (ObsException e) {
            System.out.println("OptionsBucket failed");
            // Request failed. Print the HTTP status code.
            System.out.println("HTTP Code:" + e.getResponseCode());
            // Request failed. Print the server-side error code.
            System.out.println("Error Code:" + e.getErrorCode());
            // Request failed. Print the error details.
            System.out.println("Error Message:" + e.getErrorMessage());
            // Request failed. Print the request ID.
            System.out.println("Request ID:" + e.getErrorRequestId());
            System.out.println("Host ID:" + e.getErrorHostId());
            e.printStackTrace();
        } catch (Exception e) {
            System.out.println("OptionsBucket failed");
            // Print other error information.
            e.printStackTrace();
        }
    }
}