Upload files to Alibaba Cloud OSS using Java

1. Activate object storage service

控制台 → 对象存储 OSS → 立即开通

Bucket列表 → 点击创建 Bucket

填写名称、地域，名称创建后不可修改，地域选择最近的，存储类型选择标准存储，读写权限选择公共读，其他地方默认。

2. Create AccessKey key

点击 AccessKey 管理 → 创建 → 获得到的 Select 要保存好，自从今年七月后阿里云主账号就没有查看 Select 的功能了。

3. Universal code implementation

复制一下地域节点，一会会用到：

先在 pom 文件中引入依赖：

<dependencies>
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.15.1</version>
        </dependency>
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.3.1</version>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1.1</version>
        </dependency>
        <!-- no more than 2.3.3-->
        <dependency>
            <groupId>org.glassfish.jaxb</groupId>
            <artifactId>jaxb-runtime</artifactId>
            <version>2.3.3</version>
        </dependency>
    </dependencies>

以下代码为固定格式，注意将字段信息换成自己的：

package com.zxe;

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

public class Main {
    
    

    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-beijing.aliyuncs.com";
        // 填写自己的id和密钥
        String accessKeyId = "LTAI5t7hKVWEptz2i9HsHQn";
        String accessKeySecret = "1AY9hSUot4KhZ8LGirsteBt5uea";
        // 填写Bucket名称，例如examplebucket。
        String bucketName = "andylau01";
        // 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 = "first.png";
        // 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= "C:\\Users\\Lenovo\\Desktop\\shitou.png";

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

        try {
    
    
            InputStream inputStream = new FileInputStream(filePath);
            // 创建PutObjectRequest对象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, inputStream);
            // 创建PutObject请求。
            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();
            }
        }
    }
}

如图，我们的图片文件已经上传上去了：

It is unsafe to write the key directly in the code. In fact, access credentials should be configured for the SDK and the id and select should not be disclosed to the public, which is safer.