阿里云OSS快速上手

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一、基本使用

1. 创建Bucket
2. 创建子用户，勾选OpenAPI 调用访问，创建完后，马上复制accessKeyId和accessKeySecret（只出现一次），然后给这个子用户新增权限AliyunOSSFullAccess
3. 引入依赖

<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>3.5.0</version>
</dependency>

4. 测试上传文件

    @Test
    public void TestUpload() throws FileNotFoundException {
        // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
        String endpoint = "oss-cn-fuzhou.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 = "xxx";
        String accessKeySecret = "xxx";

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

        //上传文件流
        InputStream inputStream = new FileInputStream("D:\\Users\\lian\\Pictures\\fx6\\IMG_20230401_220445.jpg");
        ossClient.putObject("gulimall-helloxsl", "IMG_20230401_220445.jpg", inputStream);

        //关闭OSSClient
        ossClient.shutdown();
    }

二、SpringCloud Alibaba-OSS

​相对于上面的方法，这个方法更方便
中文文档

1. 引入依赖

<!-- https://mvnrepository.com/artifact/com.alibaba.cloud/aliyun-oss-spring-boot-starter -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>aliyun-oss-spring-boot-starter</artifactId>
    <version>1.0.0</version>
</dependency>

<dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>aliyun-java-sdk-core</artifactId>
    <version>4.4.5</version>
</dependency>

2. 配置文件

// application.properties
alibaba.cloud.access-key=your-ak
alibaba.cloud.secret-key=your-sk
alibaba.cloud.oss.endpoint=***

3. 测试上传

//测试类上要添加注解@RunWith(SpringRunner.class)
@Autowired
private OSSClient ossClient;
@Test
public void TestUpload() throws FileNotFoundException {

    //上传文件流
    InputStream inputStream = new FileInputStream("D:\\Users\\lian\\Pictures\\下载\\21-38-11-011.jpg");
    ossClient.putObject("gulimall-helloxsl", "21-38-11-011.jpg", inputStream);

    //关闭OSSClient
    ossClient.shutdown();
}

三、服务端签名后再上传

1. 配置文件

2. controller/OssController

@RestController
public class OssController {

    @Autowired
    OSS ossClient;

    @Value("${spring.cloud.alicloud.oss.endpoint}")
    private String endpoint;
    @Value("${spring.cloud.alicloud.oss.bucket}")
    private String bucket;

    @Value("${spring.cloud.alicloud.access-key}")
    private String accessId;


    @RequestMapping("/oss/policy")
    public Map<String, String> policy() {

        //https://gulimall-helloxsl.oss-cn-fuzhou.aliyuncs.com/1.jpg
        String host = "https://" + bucket + "." + endpoint; // host的格式为 bucketname.endpoint
        // callbackUrl为 上传回调服务器的URL，请将下面的IP和Port配置为您自己的真实信息。
//        String callbackUrl = "http://88.88.88.88:8888";
        String format = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
        String dir = format + "/"; // 用户上传文件时指定的前缀。

        Map<String, String> respMap = null;
        try {
            long expireTime = 30;
            long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
            Date expiration = new Date(expireEndTime);
            PolicyConditions policyConds = new PolicyConditions();
            policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 1048576000);
            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);

            String postPolicy = ossClient.generatePostPolicy(expiration, policyConds);
            byte[] binaryData = postPolicy.getBytes("utf-8");
            String encodedPolicy = BinaryUtil.toBase64String(binaryData);
            String postSignature = ossClient.calculatePostSignature(postPolicy);

            respMap = new LinkedHashMap<String, String>();
            respMap.put("accessid", accessId);
            respMap.put("policy", encodedPolicy);
            respMap.put("signature", postSignature);
            respMap.put("dir", dir);
            respMap.put("host", host);
            respMap.put("expire", String.valueOf(expireEndTime / 1000));
            // respMap.put("expire", formatISO8601Date(expiration));


        } catch (Exception e) {
            // Assert.fail(e.getMessage());
            System.out.println(e.getMessage());
        }

        return respMap;
    }
}