springboot工程使用阿里云OSS传输文件-编程知识

springboot工程使用阿里云OSS传输文件

在application.yml文件中引入对应的配置，一个是对应的节点，两个是密钥和账号，还有一个是对应文件的名称；
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采用这样方式进行解耦，便于后期修改。

然后需要设置一个properties类，去读对应的配置信息
用到了ConfigurationProperties类，对应扫描的是alioss;
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编写对应的工具类

@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();}
}

返回文件存储的地址

在controller中编写上传方法；

@RestController
@RequestMapping("/admin/common")
@Api(tags = "通用接口")
@Slf4j
public class CommonController {@Autowiredprivate AliOssUtil aliOssUtil;/*** 文件上传* @param file* @return*/@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();//截取原始文件名的后缀   dfdfdf.pngString extension = originalFilename.substring(originalFilename.lastIndexOf("."));//构造新文件名称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);}
}

采用的UUID.randomUUID().toString() ，这个是随机命名，可以防止上传文件名称出现重复。

还需要配置对应的Configuration类，初始化阿里云对象，把他交给bean进行管理

 */
@Configuration //配置类
@Slf4j
public class OssConfiguration {//配置类 用于初始化对象@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());}
}