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阿里云 OSS 介绍

阿里云对象存储 OSS （Object Storage Service），是一款海量、安全、低成本、高可靠的云存储服务。使用 OSS，你可以通过网络随时存储和调用包括文本、图片、音频和视频等在内的各种文件。

准备工作

1. 登录阿里云后进入阿里云控制台首页选择 对象存储 OSS 服务

2. 开通服务

3. 创建Bucket

填写 bucket 名称 & 选存储空间归属的地域 & 选择读写权限为（公共读）

4. 获取密钥

创建 AccessKey

保存 AccessKey ID 和 AccessKey Secret

SpringBoot 集成 OSS

可以参考 官网 SDK 文档

1. 导入 maven 坐标

<dependency><groupId>com.aliyun.oss</groupId><artifactId>aliyun-sdk-oss</artifactId><version>${aliyun.sdk.oss}</version>
</dependency>
<dependency><groupId>javax.xml.bind</groupId><artifactId>jaxb-api</artifactId><version>${jaxb-api}</version>
</dependency>

如果是 Java 9 及以上版本，还需要导入其他坐标

2. 在 yml 中添加配置

对应的配置类

3. 编写 AliOssUtil

@Data
@AllArgsConstructor
@Slf4j
public class AliOssUtil {private String endpoint;private String accessKeyId;private String accessKeySecret;private String bucketName;/*** 文件上传** @param bytes* @param objectName* @return*/public String upload(byte[] bytes, String objectName) {// 创建OSSClient实例。OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);try {// 创建PutObject请求。ossClient.putObject(bucketName, objectName, new ByteArrayInputStream(bytes));} 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();}}//文件访问路径规则 https://BucketName.Endpoint/ObjectNameStringBuilder stringBuilder = new StringBuilder("https://");stringBuilder.append(bucketName).append(".").append(endpoint).append("/").append(objectName);log.info("文件上传到:{}", stringBuilder.toString());return stringBuilder.toString();}
}

4. 配置 OSS Configuration

/*** 配置类，用于创建AliOssUtil对象*/
@Configuration
@Slf4j
public class OssConfiguration {@Bean@ConditionalOnMissingBeanpublic AliOssUtil aliOssUtil(AliOssProperties aliOssProperties){log.info("开始创建阿里云文件上传工具类对象：{}", aliOssProperties);return new AliOssUtil(aliOssProperties.getEndpoint(),aliOssProperties.getAccessKeyId(),aliOssProperties.getAccessKeySecret(),aliOssProperties.getBucketName());}
}

5. 编写通用上传文件接口

/*** 通用接口*/
@RestController
@RequestMapping("/admin/common")
@Api(tags = "通用接口")
@Slf4j
public class CommonController {@Autowiredprivate AliOssUtil aliOssUtil;@PostMapping("/upload")@ApiOperation("文件上传")public Result<String> upload(MultipartFile file){log.info("文件上传：{}", file);try {// 原始文件名String originalFilename = file.getOriginalFilename();// 后缀String extension = originalFilename.substring(originalFilename.lastIndexOf("."));String objectName = UUID.randomUUID().toString() + extension;// 文件的请求路径String filePath = aliOssUtil.upload(file.getBytes(), objectName);return Result.success(filePath);} catch (IOException e) {log.error("文件上传失败：{}", e);}return Result.error(MessageConstant.UPLOAD_FAILED);}
}

6. 上传文件到 OSS

从前端调用上面的上传文件的接口，就可以将文件上传到 OSS 上，并且获取到访问 OSS 文件路径的 URL 地址。