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
本文以華東1(杭州)外網Endpoint為例。如果您希望通過與OSS同地區的其他阿里雲產品訪問OSS,請使用內網Endpoint。關於OSS支援的Region與Endpoint的對應關係,請參見OSS訪問網域名稱、資料中心、開放連接埠。
本文以從環境變數讀取存取憑證為例。如何配置訪問憑證,請參見Java配置訪問憑證。
本文以OSS網域名稱建立OSSClient為例。如果您希望通過自訂網域名、STS等方式建立OSSClient,請參見建立OSSClient。
要簡單上傳,您必須有
oss:PutObject
許可權。具體操作,請參見為RAM使用者授權自訂的權限原則。
流式上傳
使用流式上傳,您可以將資料流上傳到OSS檔案。
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();
}
}
}
}