Object Storage Service:Use the AccessKey pair of a RAM user to access OSS resources

export OSS_ACCESS_KEY_ID=<your-accesskey-id>
export OSS_ACCESS_KEY_SECRET=<your-accesskey-secret>

setx OSS_ACCESS_KEY_ID "<your-accesskey-id>"
setx OSS_ACCESS_KEY_SECRET "<your-accesskey-secret>"

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.File;

public class Demo {

    public static void main(String[] args) throws Exception {
        // Endpoint for the China (Hangzhou) region. Replace with your actual endpoint.
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Load credentials from the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables.
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Bucket name.
        String bucketName = "examplebucket";
        // Full object path in the bucket. Do not include the bucket name.
        String objectName = "exampledir/exampleobject.txt";
        // Full path to the local file to upload.
        String filePath = "D:\\localpath\\examplefile.txt";
        // Region where the bucket is located.
        String region = "cn-hangzhou";

        // Create an OSSClient instance with Signature Version 4.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
        OSS ossClient = OSSClientBuilder.create()
            .endpoint(endpoint)
            .credentialsProvider(credentialsProvider)
            .clientConfiguration(clientBuilderConfiguration)
            .region(region)
            .build();

        try {
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new File(filePath));
            PutObjectResult result = ossClient.putObject(putObjectRequest);
        } catch (OSSException oe) {
            System.out.println("OSS rejected the request: " + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Client error (e.g., network issue): " + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}