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Object Storage Service:Java簡單上傳

更新時間:Oct 19, 2024

簡單上傳是指通過PutObject方法上傳單個檔案(Object)。簡單上傳包括流式上傳和檔案上傳,流式上傳使用InputStream作為OSS檔案的資料來源,檔案上傳使用本地檔案作為OSS檔案的資料來源。本文介紹如何使用流式上傳和檔案上傳方式上傳檔案。

注意事項

流式上傳

使用流式上傳,您可以將資料流上傳到OSS檔案。

說明

如果OSS檔案存在,則上傳的資料會覆蓋該檔案的內容;如果OSS檔案不存在,則會建立該檔案。

上傳字串

以下代碼用於將字串上傳到目標儲存空間examplebucket中exampledir目錄下的exampleobject.txt檔案。

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.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.ByteArrayInputStream;

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";
        // 從環境變數中擷取訪問憑證。運行本程式碼範例之前,請確保已設定環境變數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Object完整路徑,完整路徑中不能包含Bucket名稱,例如exampledir/exampleobject.txt。
        String objectName = "exampledir/exampleobject.txt";
        // 填寫Bucket所在地區。以華東1(杭州)為例,Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
        
        // 建立OSSClient執行個體。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // 填寫字串。
            String content = "Hello OSS,你好世界";

            // 建立PutObjectRequest對象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new ByteArrayInputStream(content.getBytes()));

            // 如果需要上傳時設定儲存類型和存取權限,請參考以下範例程式碼。
            // ObjectMetadata metadata = new ObjectMetadata();
            // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
            // metadata.setObjectAcl(CannedAccessControlList.Private);
            // putObjectRequest.setMetadata(metadata);
           
            // 上傳字串。
            PutObjectResult result = ossClient.putObject(putObjectRequest);            
        } 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();
            }
        }
    }
}   

上傳Byte數組

以下代碼用於將Byte數組上傳到目標儲存空間examplebucket中exampledir目錄下的exampleobject.txt檔案。

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.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.ByteArrayInputStream;

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";
        // 從環境變數中擷取訪問憑證。運行本程式碼範例之前,請確保已設定環境變數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Object完整路徑,完整路徑中不能包含Bucket名稱,例如exampledir/exampleobject.txt。
        String objectName = "exampledir/exampleobject.txt";
        // 填寫Bucket所在地區。以華東1(杭州)為例,Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";

        // 建立OSSClient執行個體。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // 填寫Byte數組。
            byte[] content = "Hello OSS, 你好世界".getBytes();
            // 建立PutObjectRequest對象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new ByteArrayInputStream(content));
            
            // 建立PutObject請求。
            PutObjectResult result = ossClient.putObject(putObjectRequest);            
        } 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();
            }
        }
    }
}

上傳網路流

以下代碼用於將網路流上傳到目標儲存空間examplebucket中exampledir目錄下的exampleobject.txt檔案。

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.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.InputStream;
import java.net.URL;

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";
        // 從環境變數中擷取訪問憑證。運行本程式碼範例之前,請確保已設定環境變數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Object完整路徑,完整路徑中不能包含Bucket名稱,例如exampledir/exampleobject.txt。
        String objectName = "exampledir/exampleobject.txt";
        // 填寫網路流地址。
        String url = "https://www.aliyun.com/";
        // 填寫Bucket所在地區。以華東1(杭州)為例,Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
        
        // 建立OSSClient執行個體。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            InputStream inputStream = new URL(url).openStream();
            // 建立PutObjectRequest對象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, inputStream);
            // 建立PutObject請求。
            PutObjectResult result = ossClient.putObject(putObjectRequest);            
        } 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();
            }
        }
    }
}             

上傳檔案流

以下代碼用於將檔案流上傳到目標儲存空間examplebucket中exampledir目錄下的exampleobject.txt檔案。

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.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.FileInputStream;
import java.io.InputStream;

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";
        // 從環境變數中擷取訪問憑證。運行本程式碼範例之前,請確保已設定環境變數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Object完整路徑,完整路徑中不能包含Bucket名稱,例如exampledir/exampleobject.txt。
        String objectName = "exampledir/exampleobject.txt";
        // 填寫本地檔案的完整路徑,例如D:\\localpath\\examplefile.txt。
        // 如果未指定本地路徑,則預設從樣本程式所屬專案對應本地路徑中上傳檔案流。
        String filePath= "D:\\localpath\\examplefile.txt";
        // 填寫Bucket所在地區。以華東1(杭州)為例,Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
        
        // 建立OSSClient執行個體。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            InputStream inputStream = new FileInputStream(filePath);
            // 建立PutObjectRequest對象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, inputStream);
            // 建立PutObject請求。
            PutObjectResult result = ossClient.putObject(putObjectRequest);
        } 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();
            }
        }
    }
} 

檔案上傳

使用檔案上傳,您可以將本地檔案上傳到OSS檔案。

以下代碼用於將本地檔案examplefile.txt上傳到目標儲存空間examplebucket中exampledir目錄下的exampleobject.txt檔案。

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.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.File;

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";
        // 從環境變數中擷取訪問憑證。運行本程式碼範例之前,請確保已設定環境變數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Object完整路徑,完整路徑中不能包含Bucket名稱,例如exampledir/exampleobject.txt。
        String objectName = "exampledir/exampleobject.txt";
        // 填寫本地檔案的完整路徑,例如D:\\localpath\\examplefile.txt。
        // 如果未指定本地路徑,則預設從樣本程式所屬專案對應本地路徑中上傳檔案。
        String filePath= "D:\\localpath\\examplefile.txt";
        // 填寫Bucket所在地區。以華東1(杭州)為例,Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
        
        // 建立OSSClient執行個體。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // 建立PutObjectRequest對象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new File(filePath));
            // 如果需要上傳時設定儲存類型和存取權限,請參考以下範例程式碼。
            // ObjectMetadata metadata = new ObjectMetadata();
            // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
            // metadata.setObjectAcl(CannedAccessControlList.Private);
            // putObjectRequest.setMetadata(metadata);
            
            // 上傳檔案。
            PutObjectResult result = ossClient.putObject(putObjectRequest);           
        } 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();
            }
        }
    }
}

常見問題

相關文檔

  • 關於簡單上傳的完整範例程式碼,請參見GitHub樣本

  • 關於簡單上傳的API介面說明,請參見PutObject