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首頁 對象存儲 開發參考 SDK參考 Java 數據管理 日志轉存

Java日志轉存

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訪問OSS的過程中會產生大量的訪問日志。您可以通過日志轉存功能將這些日志按照固定命名規則，以小時為單位生成日志文件寫入您指定的存儲空間（Bucket）。

注意事項

  • 本文以華東1（杭州）外網Endpoint為例。如果您希望通過與OSS同地域的其他阿里云產品訪問OSS，請使用內網Endpoint。關于OSS支持的Region與Endpoint的對應關系，請參見OSS訪問域名、數據中心、開放端口。

  • 本文以從環境變量讀取訪問憑證為例。如何配置訪問憑證，請參見Java配置訪問憑證。

  • 本文以OSS域名新建OSSClient為例。如果您希望通過自定義域名、STS等方式新建OSSClient，請參見新建OSSClient。

  • 要開啟日志轉存，您必須有oss:PutBucketLogging權限；要查看日志轉存配置，您必須有oss:GetBucketLogging權限；要關閉日志轉存，您必須有oss:DeleteBucketLogging權限。具體操作，請參見為RAM用戶授權自定義的權限策略。

開啟日志轉存

以下代碼用于開啟日志轉存功能。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.SetBucketLoggingRequest;

public class Demo {

    public static void main(String[] args) throws Exception {
        // Endpoint以華東1（杭州）為例，其它Region請按實際情況填寫。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 從環境變量中獲取訪問憑證。運行本代碼示例之前，請確保已設置環境變量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // 填寫待開啟日志轉存功能的Bucket名稱，例如examplebucket。
        String bucketName = "examplebucket";
        // 填寫存放日志文件的目標Bucket。targetBucketName與bucketName可以為相同或不同的Bucket。
        String targetBucketName = "yourTargetBucketName";
        // 設置日志文件存儲的目錄為log/。如果指定此項，則日志文件將保存在目標Bucket的指定目錄下。如果不指定此項，則日志文件將保存在目標Bucket的根目錄下。
        String targetPrefix = "log/";
        // 填寫Bucket所在地域。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";

        // 創建OSSClient實例。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            SetBucketLoggingRequest request = new SetBucketLoggingRequest(bucketName);
            request.setTargetBucket(targetBucketName);
            request.setTargetPrefix(targetPrefix);
            ossClient.setBucketLogging(request);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + 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("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

查看日志轉存配置

以下代碼用于查看日志轉存配置。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.BucketLoggingResult;

public class Demo {

    public static void main(String[] args) throws Exception {
        // Endpoint以華東1（杭州）為例，其它Region請按實際情況填寫。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 從環境變量中獲取訪問憑證。運行本代碼示例之前，請確保已設置環境變量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // 填寫Bucket名稱，例如examplebucket。
        String bucketName = "examplebucket";
        // 填寫Bucket所在地域。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";

        // 創建OSSClient實例。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            BucketLoggingResult result = ossClient.getBucketLogging(bucketName);
            System.out.println(result.getTargetBucket());
            System.out.println(result.getTargetPrefix());
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + 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("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

關閉日志轉存

以下代碼用于關閉日志轉存功能。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.SetBucketLoggingRequest;

public class Demo {

    public static void main(String[] args) throws Exception {
        // Endpoint以華東1（杭州）為例，其它Region請按實際情況填寫。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 從環境變量中獲取訪問憑證。運行本代碼示例之前，請確保已設置環境變量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // 填寫Bucket名稱，例如examplebucket。
        String bucketName = "examplebucket";
        // 填寫Bucket所在地域。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";

        // 創建OSSClient實例。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            SetBucketLoggingRequest request = new SetBucketLoggingRequest(bucketName);
            request.setTargetBucket(null);
            request.setTargetPrefix(null);
            ossClient.setBucketLogging(request);
            // 您也可使用下面的方法刪除
            // ossClient.deleteBucketLogging(request);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + 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("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

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