java实现腾讯云配置

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.model.PutObjectRequest;
import com.qcloud.cos.model.PutObjectResult;
import com.qcloud.cos.model.GetObjectRequest;
import com.qcloud.cos.region.Region;
import com.qcloud.cos.model.COSObject;
import com.qcloud.cos.exception.CosClientException;
import com.qcloud.cos.exception.CosServiceException;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.FileOutputStream;

public class TencentCloudCOSExample {
    // 腾讯云 API 密钥信息
    private static final String SECRET_ID = "your-secret-id";
    private static final String SECRET_KEY = "your-secret-key";
    // 存储桶名称，格式：BucketName-APPID
    private static final String BUCKET_NAME = "your-bucket-name-appid";
    // 地域信息，例如 ap-guangzhou
    private static final String REGION = "your-region";

    public static void main(String[] args) {
        // 初始化 COSClient
        COSClient cosClient = initCosClient();
        
        try {
            // 上传文件示例
            uploadFile(cosClient);
            
            // 下载文件示例
            downloadFile(cosClient);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            // 关闭客户端
            cosClient.shutdown();
        }
    }

    /**
     * 初始化 COS 客户端
     */
    private static COSClient initCosClient() {
        // 1. 初始化用户身份信息(secretId, secretKey)
        COSCredentials cred = new BasicCOSCredentials(SECRET_ID, SECRET_KEY);
        // 2. 设置 bucket 的区域, COS 地域的简称请参照 https://cloud.tencent.com/document/product/436/6224
        ClientConfig clientConfig = new ClientConfig(new Region(REGION));
        // 3. 生成 cos 客户端
        return new COSClient(cred, clientConfig);
    }

    /**
     * 上传文件到 COS
     */
    private static void uploadFile(COSClient cosClient) {
        // 要上传的文件
        File localFile = new File("path/to/local/file.txt");
        // 存储在 COS 中的路径
        String key = "example/file.txt";

        // 创建上传请求
        PutObjectRequest putObjectRequest = new PutObjectRequest(BUCKET_NAME, key, localFile);
        
        try {
            // 执行上传
            PutObjectResult putObjectResult = cosClient.putObject(putObjectRequest);
            // 上传成功后，可以获取文件的 etag
            String etag = putObjectResult.getETag();
            System.out.println("文件上传成功，ETag: " + etag);
        } catch (CosServiceException e) {
            // 服务端异常
            e.printStackTrace();
        } catch (CosClientException e) {
            // 客户端异常
            e.printStackTrace();
        }
    }

    /**
     * 从 COS 下载文件
     */
    private static void downloadFile(COSClient cosClient) {
        // 存储在 COS 中的路径
        String key = "example/file.txt";
        // 下载到本地的路径
        File localFile = new File("path/to/download/file.txt");

        // 创建下载请求
        GetObjectRequest getObjectRequest = new GetObjectRequest(BUCKET_NAME, key);
        
        try {
            // 执行下载
            COSObject cosObject = cosClient.getObject(getObjectRequest);
            // 获取文件输入流
            InputStream inputStream = cosObject.getObjectContent();
            
            // 将文件写入本地
            FileOutputStream fileOutputStream = new FileOutputStream(localFile);
            byte[] buffer = new byte[1024 * 1024];
            int bytesRead;
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                fileOutputStream.write(buffer, 0, bytesRead);
            }
            
            // 关闭流
            fileOutputStream.close();
            inputStream.close();
            
            System.out.println("文件下载成功");
        } catch (CosServiceException e) {
            // 服务端异常
            e.printStackTrace();
        } catch (CosClientException e) {
            // 客户端异常
            e.printStackTrace();
        } catch (IOException e) {
            // IO 异常
            e.printStackTrace();
        }
    }
}