SpringBoot + 七牛云存储（实现文件上传、删除）

springboot配置七牛云

七牛开发者中心：https://developer.qiniu.com/

项目源码：https://github.com/Tellsea/springboot-learn/tree/master/springboot-qiniu

依赖

<dependency>
    <groupId>com.qiniugroupId>
    <artifactId>qiniu-java-sdkartifactId>
    <version>[7.2.0, 7.2.99]version>
dependency>
我还使用了fastjson，自己加一下

application.yml

qiniu:
  accessKey: 个人中心-->秘钥管理-->AccessKey
  secretKey: 个人中心-->秘钥管理-->SecretKey
  bucket: 存储空间名称
  prefix: 访问域名

七牛配置

@Configuration
@EnableConfigurationProperties(QiniuProperties.class)
public class QiniuFileConfig {

    @Autowired
    private QiniuProperties qiniuProperties;

    /**
     * 华东机房,配置自己空间所在的区域
     */
    @Bean
    public com.qiniu.storage.Configuration qiniuConfig() {
        return new com.qiniu.storage.Configuration(Zone.zone0());
    }
 
    /**
     * 构建一个七牛上传工具实例
     */
    @Bean
    public UploadManager uploadManager() {
        return new UploadManager(qiniuConfig());
    }
 
    /**
     * 认证信息实例
     * @return
     */
    @Bean
    public Auth auth() {
        return Auth.create(qiniuProperties.getAccessKey(), qiniuProperties.getSecretKey());
    }
 
    /**
     * 构建七牛空间管理实例
     */
    @Bean
    public BucketManager bucketManager() {
        return new BucketManager(auth(), qiniuConfig());
    }
 
    @Bean
    public Gson gson() {
        return new Gson();
    }
}

七牛属性

@Data
@ConfigurationProperties(prefix = "qiniu")
public class QiniuProperties {

    private String accessKey;

    private String secretKey;

    private String bucket;

    private String prefix;
}

QiniuService 接口

public interface QiniuService {

    String uploadFile(File file) throws QiniuException;

    String uploadFile(InputStream inputStream) throws QiniuException;

    Response delete(String key) throws QiniuException;
}

QiniuService 接口实现

@Slf4j
@Service
@EnableConfigurationProperties(QiniuProperties.class)
public class QiniuServiceImpl implements QiniuService, InitializingBean {

    @Autowired
    private QiniuProperties qiniuProperties;

    @Autowired
    private UploadManager uploadManager;

    @Autowired
    private BucketManager bucketManager;

    @Autowired
    private Auth auth;

    // 定义七牛云上传的相关策略
    private StringMap putPolicy;


    /**
     * 以文件的形式上传
     *
     * @param file
     * @return
     * @throws QiniuException
     */
    @Override
    public String uploadFile(File file) throws QiniuException {
        Response response = this.uploadManager.put(file, null, getUploadToken());
        int retry = 0;
        while (response.needRetry() && retry < 3) {
            response = this.uploadManager.put(file, null, getUploadToken());
            retry++;
        }
        //解析结果
        DefaultPutRet putRet = JSON.parseObject(response.bodyString(), DefaultPutRet.class);
        String return_path = qiniuProperties.getPrefix() + "/" + putRet.key;
        log.info("文件名称={}", return_path);
        return return_path;
    }

    /**
     * 以流的形式上传
     *
     * @param inputStream
     * @return
     * @throws QiniuException
     */
    @Override
    public String uploadFile(InputStream inputStream) throws QiniuException {
        Response response = this.uploadManager.put(inputStream, null, getUploadToken(), null, null);
        int retry = 0;
        while (response.needRetry() && retry < 3) {
            response = this.uploadManager.put(inputStream, null, getUploadToken(), null, null);
            retry++;
        }
        //解析结果
        DefaultPutRet putRet = JSON.parseObject(response.bodyString(), DefaultPutRet.class);
        String return_path = qiniuProperties.getPrefix() + "/" + putRet.key;
        log.info("文件名称={}", return_path);
        return return_path;
    }

    /**
     * 删除七牛云上的相关文件
     *
     * @param key
     * @return
     * @throws QiniuException
     */
    @Override
    public Response delete(String key) throws QiniuException {
        Response response = bucketManager.delete(qiniuProperties.getBucket(), key);
        int retry = 0;
        while (response.needRetry() && retry++ < 3) {
            response = bucketManager.delete(qiniuProperties.getBucket(), key);
        }
        return response;
    }


    @Override
    public void afterPropertiesSet() throws Exception {
        this.putPolicy = new StringMap();
        putPolicy.put("returnBody", "{\"key\":\"$(key)\",\"hash\":\"$(etag)\",\"bucket\":\"$(bucket)\",\"width\":$(imageInfo.width), \"height\":${imageInfo.height}}");
        // 自定义文件名字
        // putPolicy.put("saveKey", UUID.randomUUID().timestamp());
    }

    /**
     * 获取上传凭证
     *
     * @return
     */
    private String getUploadToken() {
        return this.auth.uploadToken(qiniuProperties.getBucket(), null, 3600, putPolicy);
    }
}

控制层

@RestController
@RequestMapping("/qiniu")
public class QiniuController {

    @Autowired
    private QiniuService qiniuService;

    /**
     * 以流的形式上传图片
     *
     * @param file
     * @return 返回访问路径
     * @throws IOException
     */
    @PostMapping("upload")
    public String uploadFile(@RequestParam(value = "file") MultipartFile file) throws IOException {
        return qiniuService.uploadFile(file.getInputStream());
    }

    /**
     * 删除文件
     *
     * @param key
     * @return
     * @throws IOException
     */
    @GetMapping("delete/{key}")
    public Response deleteFile(@PathVariable String key) throws IOException {
        return qiniuService.delete(key);
    }
}