阿里云OSS学习总结

一.开发一个APP上传服务，需要有存储的支持，那么我们的解决方案将以下几种：

1. 1  直接将图片保存到服务的硬盘

1. 1. 优点：开发便捷，成本低
2. 2. 缺点：扩容困难

1.2  使用分布式文件系统进行存储

1. 1. 优点：容易实现扩容
2. 2. 缺点：开发复杂度稍大（尤其是开发复杂的功能）

1.3  使用nfs做存储

1. 1. 优点：开发较为便捷
2. 2. 缺点：需要有一定的运维知识进行部署和维护

1.4  使用第三方的存储服务

1. 1. 优点：开发简单，拥有强大功能，免维护
2. 2. 缺点：付费

在这我们采用第一、四解决方案，第三方服务选用阿里云的OSS服务。

 

二.配置

2.1  导入依赖

    com.aliyun.oss
    aliyun-sdk-oss
    2.8.3

2.2   编写aliyun.properties配置文件

aliyun.endpoint=
aliyun.accessKeyId=
aliyun.accessKeySecret=
aliyun.bucketName=
aliyun.urlPrefix=

2.3   编写AliyunConfig

@Configuration
@PropertySource(value = {"classpath:aliyun.properties"})
@ConfigurationProperties(prefix = "aliyun")
@Data
public class AliyunConfig {
    private String endpoint;
    private String accessKeyId;
    private String accessKeySecret;
    private String bucketName;
    private String urlPrefix;
    @Bean
    public OSS oSSClient() {
    return new OSSClient(endpoint, accessKeyId, accessKeySecret);
    }
}

三.文件上传（图片，APP）

3.1 图片

// 允许上传的格式
private static final String[] IMAGE_TYPE = new String[]{".bmp", ".jpg",
".jpeg", ".gif", ".png"};

 3.2 APP-OSS

 /**
     * APK上传到阿里云oss
     *
     * @param request
     * @return
     */
    //  @RequestMapping(value = "/upload", method = RequestMethod.POST)
    @ResponseBody
    public Map upload(HttpServletRequest request) {
        try {
            MultipartHttpServletRequest fileRequest = (MultipartHttpServletRequest) request;
            MultipartFile file = fileRequest.getFile("file");
            InputStream inputStream = file.getInputStream();
            String name = file.getOriginalFilename();
            systemOperLogWrite.systemLogWrite("上传文件", SystemOperLog.LOG_TYPE_INSERT, systemOperLogWrite.objectToString(name));
            //本地判断是否存在
            String localMd5 = AliyunOSSClientUtil.getLocalMd5(file);
            AppVersionVo vo = new AppVersionVo();
            vo.setMd5(localMd5);
            List appVersionEntities = appVersionDubboService.findByVo(vo);
            if (CollectionUtils.isNotEmpty(appVersionEntities)) {
                return ResultUtil.getFailResJson("该版本已存在", AcsConstent.BACK_FAILED_CODE);
            }
            String keyNeme = "";
            if (StringUtils.isBlank(name)) {
                return ResultUtil.getFailResJson("文件名不能为空");
            }
            if (name.endsWith(AcsConstent.APP.endWithName)) {
                keyNeme = AcsConstent.APP.startFileName + StringUtils.getUUID() + AcsConstent.APP.endWithName;
            } else {
                return ResultUtil.getFailResJson(AcsConstent.APP.uploaFileNameError, AcsConstent.BACK_FAILED_CODE);
            }
            long size = 1;
            if (file.getSize() > AcsConstent.INT_NUM_KB) {
                size = file.getSize() / AcsConstent.INT_NUM_KB / AcsConstent.INT_NUM_KB;
            }
            // String bucketName = "aiot-face-image";
            SystemConfigEntity systemConfigField = systemConfigDubboService.getSystemConfigField(Constants.Aliyun_BucketName);
            String bucketName = systemConfigField.getValue();
            // Endpoint以杭州为例，其它Region请按实际情况填写
            // String endpoint = "http://oss-cn-shenzhen.aliyuncs.com";
            SystemConfigEntity systemConfigField1 = systemConfigDubboService.getSystemConfigField(Constants.Aliyun_Endpoint);
            String endpoint = systemConfigField1.getValue();
            SystemConfigEntity accessKey = systemConfigDubboService.getSystemConfigField(Constants.Aliyun_AccessKeyId);
            String accessKeyId = accessKey.getValue();
            SystemConfigEntity accessSecret = systemConfigDubboService.getSystemConfigField(Constants.Aliyun_AccessKeySecret);
            String accessKeySecret = AESUtil.aesDecrypt(accessSecret.getValue(), AcsConstent.APP.AccessKeySecret_DecryptKey);
            // 创建OSSClient实例
            OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
            // 文件大小
            ObjectMetadata metadata = new ObjectMetadata();
            // 上传的文件的长度
            metadata.setContentLength(inputStream.available());
            // 指定该Object被下载时的网页的缓存行为
            metadata.setCacheControl("no-cache");
            // 指定该Object下设置Header
            metadata.setHeader("Pragma", "no-cache");
            // 指定该Object被下载时的内容编码格式
            metadata.setContentEncoding("utf-8");
            // 文件的MIME，定义文件的类型及网页编码，决定浏览器将以什么形式、什么编码读取文件。如果用户没有指定则根据Key或文件名的扩展名生成
            // 如果没有扩展名则填默认值application/octet-stream
            metadata.setContentType(AliyunOSSClientUtil.getContentType(name));
            // 指定该Object被下载时的名称（指示MINME用户代理如何显示附加的文件，打开或下载，及文件名称）
            PutObjectResult putResult = ossClient.putObject(bucketName, keyNeme, inputStream, metadata);
            String eTag = putResult.getETag();
            // 关闭OSSClient
            ossClient.shutdown();
            Date expiration = new Date(System.currentTimeMillis() + AcsConstent.APP.EXPIRE_DAY);
            String url = ossClient.generatePresignedUrl(bucketName, keyNeme, expiration).toString();
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("url", url);
            jsonObject.put("MD5", eTag);
            jsonObject.put("appSize", size);
            return StringUtils.isNotBlank(url) ? ResultUtil.getSuccessResJson("data", jsonObject.toString()) : ResultUtil.getFailResJson("上传失败", "1");
        } catch (Exception e) {
            logger.info("上传文件失败###################{}", e);
        }
        return null;
    }

 3.2 APP-服务器

@RequestMapping(value = "/upload", method = RequestMethod.POST)
    @ResponseBody
    public Map uploadApk(HttpServletRequest request) {
        FileOutputStream fileOutputStream = null;
        InputStream inputStream = null;
        try {
            MultipartHttpServletRequest fileRequest = (MultipartHttpServletRequest) request;
            MultipartFile file = fileRequest.getFile("file");
            inputStream = file.getInputStream();
            String fileName = file.getOriginalFilename();

            //本地判断是否存在
            String localMd5 = AliyunOSSClientUtil.fileToMd5(file);
            JSONObject checkJson = checkPamams(localMd5, fileName);
            if (checkJson != null) {
                return checkJson;
            }
            long size = 1;
            if (file.getSize() > AcsConstent.INT_NUM_KB) {
                size = file.getSize() / AcsConstent.INT_NUM_KB / AcsConstent.INT_NUM_KB;
            }

            String downloadFileUrl = redisOperatorManager.getValue("upload.file.url", CommonConstants.SYSTEM_CONFIG_REDIS_INDEX, "http://%s:%s/acs-admin/system/fileManager/downloadFileByKey?key=%s");
            downloadFileUrl = String.format(downloadFileUrl, host, port, localMd5);
            String fileUploadPath = fileUploadBasePath + File.separator + "app";
            File fileUploadPathFile = new File(fileUploadPath);
            if (!fileUploadPathFile.exists()) {
                fileUploadPathFile.mkdirs();
            }
            //新文件名为md5值
            String keyName = localMd5 + AcsConstent.APP.endWithName;
            String fileUploadFileName = fileUploadPath + File.separator + keyName;
            File fileUploadFile = new File(fileUploadFileName);
            if (!fileUploadFile.exists()) {
                fileUploadFile.createNewFile();
            }
            fileOutputStream = new FileOutputStream(fileUploadFile);
            IOUtils.copy(inputStream, fileOutputStream);

            JSONObject jsonObject = new JSONObject();
            jsonObject.put("url", downloadFileUrl);
            jsonObject.put("MD5", localMd5);
            jsonObject.put("appSize", size);
            jsonObject.put("originalFilename", fileName);

            FileUploadVo fileUploadVo = new FileUploadVo();
            fileUploadVo.setFilePath(fileUploadPath);
            fileUploadVo.setFileName(keyName);
            fileUploadVo.setMd5(localMd5);
            //通知
            notifyFileUploadZk(fileUploadVo);

            systemOperLogWrite.systemLogWrite("上传文件", SystemOperLog.LOG_TYPE_INSERT, jsonObject.toJSONString());
            return ResultUtil.getSuccessResJson("data", jsonObject.toString());
        } catch (RuntimeException e){
            logger.info("运行时抛出异常###################{}", e);
        } catch (Exception e) {
            logger.info("上传文件失败###################{}", e);
        } finally {
            IOUtils.closeQuietly(fileOutputStream);
            IOUtils.closeQuietly(inputStream);
        }
        return ResultUtil.getFailResJson("上传失败", "1");
    }