简单上传是指通过PutObject方法上传单个文件(Object)。简单上传包括流式上传和文件上传,流式上传使用InputStream作为OSS文件的数据源,文件上传使用本地文件作为OSS文件的数据源。本文介绍如何使用流式上传和文件上传方式上传文件。

流式上传

使用流式上传,您可以将数据流上传到OSS文件。
说明 如果OSS文件存在,则上传的数据会覆盖该文件的内容;如果OSS文件不存在,则会新建该文件。
  • 上传字符串

    以下代码用于将字符串上传到目标存储空间examplebucket中exampledir目录下的exampleobject.txt文件。

    import com.aliyun.oss.ClientException;
    import com.aliyun.oss.OSS;
    import com.aliyun.oss.OSSClientBuilder;
    import com.aliyun.oss.OSSException;
    import com.aliyun.oss.model.PutObjectRequest;
    import java.io.ByteArrayInputStream;
    
    public class Demo {
    
        public static void main(String[] args) throws Exception {
            // Endpoint以华东1(杭州)为例,其它Region请按实际情况填写。
            String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
            // 阿里云账号AccessKey拥有所有API的访问权限,风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维,请登录RAM控制台创建RAM用户。
            String accessKeyId = "yourAccessKeyId";
            String accessKeySecret = "yourAccessKeySecret";
            // 填写Bucket名称,例如examplebucket。
            String bucketName = "examplebucket";
            // 填写Object完整路径,完整路径中不能包含Bucket名称,例如exampledir/exampleobject.txt。
            String objectName = "exampledir/exampleobject.txt";
    
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    
            try {
                // 填写字符串。
                String content = "Hello OSS";
    
                // 创建PutObjectRequest对象。       
                PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new ByteArrayInputStream(content.getBytes()));
                
                // 如果需要上传时设置存储类型和访问权限,请参考以下示例代码。
                // ObjectMetadata metadata = new ObjectMetadata();
                // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
                // metadata.setObjectAcl(CannedAccessControlList.Private);
                // putObjectRequest.setMetadata(metadata);
    
                // 上传字符串。
                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();
                }
            }
        }
    }                    
  • 上传Byte数组

    以下代码用于将Byte数组上传到目标存储空间examplebucket中exampledir目录下的exampleobject.txt文件。

    import com.aliyun.oss.ClientException;
    import com.aliyun.oss.OSS;
    import com.aliyun.oss.OSSClientBuilder;
    import com.aliyun.oss.OSSException;
    import java.io.ByteArrayInputStream;
    
    public class Demo {
    
        public static void main(String[] args) throws Exception {
            // Endpoint以华东1(杭州)为例,其它Region请按实际情况填写。
            String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
            // 阿里云账号AccessKey拥有所有API的访问权限,风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维,请登录RAM控制台创建RAM用户。
            String accessKeyId = "yourAccessKeyId";
            String accessKeySecret = "yourAccessKeySecret";
            // 填写Bucket名称,例如examplebucket。
            String bucketName = "examplebucket";
            // 填写Object完整路径,完整路径中不能包含Bucket名称,例如exampledir/exampleobject.txt。
            String objectName = "exampledir/exampleobject.txt";      
    
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    
            try {
                // 填写Byte数组。
                byte[] content = "Hello OSS".getBytes();
                // 创建PutObject请求。
                ossClient.putObject(bucketName, objectName, new ByteArrayInputStream(content));
            } 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();
                }
            }
        }
    }                    
  • 上传网络流

    以下代码用于将网络流上传到目标存储空间examplebucket中exampledir目录下的exampleobject.txt文件。

    import com.aliyun.oss.ClientException;
    import com.aliyun.oss.OSS;
    import com.aliyun.oss.OSSClientBuilder;
    import com.aliyun.oss.OSSException;
    import java.io.InputStream;
    import java.net.URL;
    
    public class Demo {
    
        public static void main(String[] args) throws Exception {
             // Endpoint以华东1(杭州)为例,其它Region请按实际情况填写。
            String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
            // 阿里云账号AccessKey拥有所有API的访问权限,风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维,请登录RAM控制台创建RAM用户。
            String accessKeyId = "yourAccessKeyId";
            String accessKeySecret = "yourAccessKeySecret";
            // 填写Bucket名称,例如examplebucket。
            String bucketName = "examplebucket";
            // 填写Object完整路径,完整路径中不能包含Bucket名称,例如exampledir/exampleobject.txt。
            String objectName = "exampledir/exampleobject.txt";
            // 填写网络流地址。
            String url = "https://www.aliyun.com/";
    
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    
            try {            
                InputStream inputStream = new URL(url).openStream();
                // 创建PutObject请求。
                ossClient.putObject(bucketName, objectName, inputStream);
            } 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();
                }
            }
        }
    }                    
  • 上传文件流

    以下代码用于将文件流上传到目标存储空间examplebucket中exampledir目录下的exampleobject.txt文件。

    import com.aliyun.oss.ClientException;
    import com.aliyun.oss.OSS;
    import com.aliyun.oss.OSSClientBuilder;
    import com.aliyun.oss.OSSException;
    import java.io.FileInputStream;
    import java.io.InputStream;
    
    public class Demo {
    
        public static void main(String[] args) throws Exception {
            // Endpoint以华东1(杭州)为例,其它Region请按实际情况填写。
            String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
            // 阿里云账号AccessKey拥有所有API的访问权限,风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维,请登录RAM控制台创建RAM用户。
            String accessKeyId = "yourAccessKeyId";
            String accessKeySecret = "yourAccessKeySecret";
            // 填写Bucket名称,例如examplebucket。
            String bucketName = "examplebucket";
            // 填写Object完整路径,完整路径中不能包含Bucket名称,例如exampledir/exampleobject.txt。
            String objectName = "exampledir/exampleobject.txt";
            // 填写本地文件的完整路径,例如D:\\localpath\\examplefile.txt。
            // 如果未指定本地路径,则默认从示例程序所属项目对应本地路径中上传文件流。
            String filePath= "D:\\localpath\\examplefile.txt";
    
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    
            try {
                InputStream inputStream = new FileInputStream(filePath);            
                // 创建PutObject请求。
                ossClient.putObject(bucketName, objectName, inputStream);
            } 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();
                }
            }
        }
    }                    

文件上传

使用文件上传,您可以将本地文件上传到OSS文件。

以下代码用于将本地文件examplefile.txt上传到目标存储空间examplebucket中exampledir目录下的exampleobject.txt文件。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.PutObjectRequest;
import java.io.File;

public class Demo {

    public static void main(String[] args) throws Exception {
        // Endpoint以华东1(杭州)为例,其它Region请按实际情况填写。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 阿里云账号AccessKey拥有所有API的访问权限,风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维,请登录RAM控制台创建RAM用户。
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // 填写Bucket名称,例如examplebucket。
        String bucketName = "examplebucket";
        // 填写Object完整路径,完整路径中不能包含Bucket名称,例如exampledir/exampleobject.txt。
        String objectName = "exampledir/exampleobject.txt";
        // 填写本地文件的完整路径,例如D:\\localpath\\examplefile.txt。
        // 如果未指定本地路径,则默认从示例程序所属项目对应本地路径中上传文件。
        String filePath= "D:\\localpath\\examplefile.txt";

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // 创建PutObjectRequest对象。            
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new File(filePath));
            // 如果需要上传时设置存储类型和访问权限,请参考以下示例代码。
            // ObjectMetadata metadata = new ObjectMetadata();
            // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
            // metadata.setObjectAcl(CannedAccessControlList.Private);
            // putObjectRequest.setMetadata(metadata);

            // 上传文件。
            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();
            }
        }
    }
}            

常见问题

相关文档

  • 关于简单上传的完整示例代码,请参见GitHub示例
  • 关于简单上传的API接口说明,请参见PutObject