阿里云OSS文件上传

<!--aliyunOSS-->
<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>3.10.2</version>
</dependency>

<dependency>
     <groupId>joda-time</groupId>
     <artifactId>joda-time</artifactId>
</dependency>

@Component
public class ConstantYmlUtils implements InitializingBean {
    //读取配置文件中内容
    @Value("${aliyun.oss.file.endpoint}")
    private String endpoint;
    @Value("${aliyun.oss.file.keyid}")
    private String keyid;
    @Value("${aliyun.oss.file.keysecret}")
    private String keysecret;
    @Value("${aliyun.oss.file.bucketname}")
    private String bucketname;
    //定义静态常量
    public static String ENDPOINT;
    public static String KEYID;
    public static String KEYSECRET;
    public static String BUCKETNAME;
    @Override
    public void afterPropertiesSet() throws Exception {
        ENDPOINT = endpoint;
        KEYID = keyid;
        KEYSECRET = keysecret;
        BUCKETNAME = bucketname;
    }
}

package com.atguigu.oss.service;
public interface OssService {
    String uploadFileAvatar(MultipartFile file);
}
@Service
public class OssServiceImpl implements OssService {
    @Override
    public String uploadFileAvatar(MultipartFile file) {
        String endpoint =  ConstantYmlUtils.ENDPOINT;
        String keyid = ConstantYmlUtils.KEYID;
        String keysecret = ConstantYmlUtils.KEYSECRET;
        String bucketname = ConstantYmlUtils.BUCKETNAME;
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, keyid, keysecret);
        try {
            InputStream inputStream = null;
            try {
                inputStream = file.getInputStream();
            } catch (IOException e) {
                e.printStackTrace();
            }
            // 创建PutObjectRequest对象。
            String fileName = file.getOriginalFilename();
            //在文件名称中添加一个随机的唯一的一个值
            String uuid = UUID.randomUUID().toString().replace("-","");
            fileName = uuid + fileName;
            //把文件按照日期进行分类
            String datePath = new DateTime().toString("yyyy/MM/dd");
            //拼接
            fileName = datePath +"/"+ fileName;
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketname, fileName, inputStream);
            // 设置该属性可以返回response。如果不设置，则返回的response为空。
            putObjectRequest.setProcess("true");
            // 创建PutObject请求。
            PutObjectResult result = ossClient.putObject(putObjectRequest);
            // 如果上传成功，则返回200。
            System.out.println(result.getResponse().getStatusCode());
            String url = "https://guli-file-xiaozhao.oss-cn-beijing.aliyuncs.com/"+fileName;
            return url;
        } 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();
            }
        }
        return null;
    }
}

@RestController
@RequestMapping("/eduoss/fileoss")
@CrossOrigin
@Api(value = "用于文件上传到阿里云的接口")
public class OssController {
    @Autowired
    private OssService ossService;
    //上传头像的方法
    @PostMapping("uploadOssFile")
    public R uploadOssFile(MultipartFile file){
        //获取上传的文件
        String url = ossService.uploadFileAvatar(file);
        return  R.ok().data("url",url);
    }
}