springboot上传到阿里OSS

 阿里OSS文档

Bucket	存储空间
Object	对象或者文件
Endpoint	OSS 访问域名

更多请看 

配置文件

alibaba:
  cloud:
    access-key: LTAI4GAx***cmUvBy3DHmeJh
    secret-key: UHLJorhm***p9xObtSr7bprErS1t6J
    oss:
      endpoint: oss-cn-shenzhen.aliyuncs.com
      bucket: xx-hzxx

@RestController
@RequestMapping("thirdparty")
public class OssController {

    @Autowired
    OSS ossClient;

    @Value("${alibaba.cloud.oss.endpoint}")
    private String endpoint;

    @Value("${alibaba.cloud.oss.bucket}")
    private String bucket;

    @Value("${alibaba.cloud.access-key}")
    private String accessId;

    @RequestMapping("/oss/policy")
    public R policy(){

        // host的格式为 bucketname.endpoint
        String host = "https://" + bucket + "." + endpoint;

        // callbackUrl为 上传回调服务器的URL，请将下面的IP和Port配置为您自己的真实信息。
        String callbackUrl = "http://88.88.88.88:8888";

        // 用户上传文件时指定的前缀，也就是目录
        String format = new SimpleDateFormat("YYYY-MM-dd").format(new Date());
        String dir = format;

        // 创建OSSClient实例,引入自动依赖注入，这里不需要再new了
        // OSS ossClient = new OSSClientBuilder().build(endpoint, accessId, accessKey);

        Map<String, String> respMap = null;

        try {
            long expireTime = 30;
            long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
            Date expiration = new Date(expireEndTime);
            // PostObject请求最大可支持的文件大小为5 GB，即CONTENT_LENGTH_RANGE为5*1024*1024*1024。
            PolicyConditions policyConds = new PolicyConditions();
            policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 1048576000);
            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);

            String postPolicy = ossClient.generatePostPolicy(expiration, policyConds);
            byte[] binaryData = postPolicy.getBytes("utf-8");
            String encodedPolicy = BinaryUtil.toBase64String(binaryData);
            String postSignature = ossClient.calculatePostSignature(postPolicy);

            respMap = new LinkedHashMap<String, String>();
            respMap.put("accessid", accessId);
            respMap.put("policy", encodedPolicy);
            respMap.put("signature", postSignature);
            respMap.put("dir", dir);
            respMap.put("host", host);
            respMap.put("expire", String.valueOf(expireEndTime / 1000));
            // respMap.put("expire", formatISO8601Date(expiration));

      /*
      JSONObject jasonCallback = new JSONObject();
      jasonCallback.put("callbackUrl", callbackUrl);
      jasonCallback.put("callbackBody",
          "filename=${object}&size=${size}&mimeType=${mimeType}&height=${imageInfo.height}&width=${imageInfo.width}");
      jasonCallback.put("callbackBodyType", "application/x-www-form-urlencoded");
      String base64CallbackBody = BinaryUtil.toBase64String(jasonCallback.toString().getBytes());
      respMap.put("callback", base64CallbackBody);
       */

        } catch (Exception e) {
            // Assert.fail(e.getMessage());
            System.out.println(e.getMessage());
        } finally {
            ossClient.shutdown();
        }

        return R.ok().put("data", respMap);

    }

}