Spring Boot上传文件到腾讯云储存

腾讯云平台操作

登录到腾讯云控制台 -> 对象存储 -> 创建存储桶（访问权限设置为公有读私有写）

空间名称    appblog-1253563213
所属地域    广州（华南） （ap-guangzhou）
访问域名    https://appblog-1253563213.cos.ap-guangzhou.myqcloud.com

秘钥管理 -> 新建云API秘钥

SecretId: AKIDhBQQAjuGA6MehUITeZDbjcGessc9st88
SecretKey: L2JK6JHEySV3LgmZSWehXAYsxoQn75kA

Spring boot项目集成

Maven依赖

<!-- https://mvnrepository.com/artifact/com.qcloud/cos_api -->
<dependency>
    <groupId>com.qcloud</groupId>
    <artifactId>cos_api</artifactId>
    <version>5.5.1</version>
</dependency>

配置信息

tencent:
  #腾讯云存储所需信息
  cloud:
    #SecretId
    accessKey: AKIDhBQQAjuGA6MehUITeZDbjcGessc9st88
    #SecretKey
    secretKey: L2JK6JHEySV3LgmZSWehXAYsxoQn75kA
    #所属区域
    bucket: ap-guangzhou
    #存储桶名称
    bucketName: appblog-1253563213
    #访问域名
    path: https://appblog-1253563213.cos.ap-guangzhou.myqcloud.com
    #路径前缀
    prefix: appblog

@Getter
@Setter
@Configuration
public class TencentConfig {
    @Value("${tencent.cloud.accessKey}")
    private String accessKey;
    @Value("${tencent.cloud.secretKey}")
    private String secretKey;
    @Value("${tencent.cloud.bucket}")
    private String bucket;
    @Value("${tencent.cloud.bucketName}")
    private String bucketName;
    @Value("${tencent.cloud.path}")
    private String path;
    @Value("${tencent.cloud.prefix}")
    private String prefix;
}

文件上传控制器

@Controller
@Slf4j
@RequestMapping(value = "/upload/tencent")
public class TencentUploadController {
    @Autowired
    private TencentConfig tencentConfig;

    /**
     * 上传道腾讯云服务器（https://cloud.tencent.com/document/product/436/10199）
     * @return
     */
    @RequestMapping(value = "/single", method = RequestMethod.POST)
    @ResponseBody
    public Object Upload(@RequestParam(value = "file") MultipartFile file, HttpSession session) {
        if (file == null) {
            return new UploadMsg(0, "文件为空", null);
        }
        String oldFileName = file.getOriginalFilename();
        String eName = oldFileName.substring(oldFileName.lastIndexOf("."));
        String newFileName = UUID.randomUUID() + eName;
        Calendar cal = Calendar.getInstance();
        int year = cal.get(Calendar.YEAR);
        int month = cal.get(Calendar.MONTH) + 1;
        int day = cal.get(Calendar.DATE);
        // 1 初始化用户身份信息(secretId, secretKey)
        COSCredentials cred = new BasicCOSCredentials(tencentConfig.getAccessKey(), tencentConfig.getSecretKey());
        // 2 设置bucket的区域, COS地域的简称请参照 https://cloud.tencent.com/document/product/436/6224
        ClientConfig clientConfig = new ClientConfig(new Region(tencentConfig.getBucket()));
        // 3 生成cos客户端
        COSClient cosclient = new COSClient(cred, clientConfig);
        // bucket的命名规则为{name}-{appid} ，此处填写的存储桶名称必须为此格式
        String bucketName = tencentConfig.getBucketName();

        // 简单文件上传, 最大支持 5 GB, 适用于小文件上传, 建议 20 M 以下的文件使用该接口
        // 大文件上传请参照 API 文档高级 API 上传
        File localFile = null;
        try {
            localFile = File.createTempFile("temp", null);
            file.transferTo(localFile);
            // 指定要上传到 COS 上的路径
            String key = "/" + tencentConfig.getPrefix() + "/" + year + "/" + month + "/" + day + "/" + newFileName;
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, key, localFile);
            PutObjectResult putObjectResult = cosclient.putObject(putObjectRequest);
            log.info(putObjectResult.getContentMd5());
            log.info(putObjectResult.getDateStr());
            log.info(putObjectResult.getETag());
            log.info(putObjectResult.getRequestId());
            //{"status":1,"msg":"上传成功","path":"https://appblog-1253563213.cos.ap-guangzhou.myqcloud.com/appblog/2019/2/20/3f934239-2c92-4da1-bb80-896299fcdcdf.png"}
            return new UploadMsg(1, "上传成功", tencentConfig.getPath() + putObjectRequest.getKey());
        } catch (IOException e) {
            return new UploadMsg(-1, e.getMessage(), null);
        } finally {
            // 关闭客户端(关闭后台线程)
            cosclient.shutdown();
        }
    }
}

@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
public class UploadMsg {
    public int status;
    public String msg;
    public String path;
}