<dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.5.0</version>
        </dependency>

 @Test
    public void testUpload() {
        // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
        String accessKeyId = "LTAI5tQRCX6FBx77qqhepLo9";
        String accessKeySecret = "UGvWNebBJusYPTIv9kRfBsEckthRqF";
        // 填写Bucket名称，例如examplebucket。
        String bucketName = "gulimall-jerry-jy";
        // 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。
        String objectName = "9.png";
        // 填写本地文件的完整路径，例如D:\\localpath\\examplefile.txt。
        // 如果未指定本地路径，则默认从示例程序所属项目对应本地路径中上传文件流。
        String filePath = "C:\\Users\\15718\\Desktop\\png\\9.png";
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        try {
            InputStream inputStream = new FileInputStream(filePath);
            // 创建PutObject请求。
            ossClient.putObject(bucketName, objectName, inputStream);
        } 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());
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (ossClient != null) {
                System.out.println("上传完成！");
                ossClient.shutdown();
            }
        }
    }

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alicloud-oss</artifactId>
        </dependency>

spring:
  cloud: 
      alicloud:
        access-key: LTAI5tQRCX6FBx77qqhepLo9
        secret-key: UGvWNebBJusYPTIv9kRfBsEckthRqF
        oss:
          endpoint: oss-cn-hangzhou.aliyuncs.com

package com.jerry.gulimall.thirdparty.controller;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.utils.BinaryUtil;
import com.aliyun.oss.model.MatchMode;
import com.aliyun.oss.model.PolicyConditions;
import com.jerry.common.utils.R;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.beans.factory.annotation.Value;
import java.util.Date;
import java.util.Map;
import java.text.SimpleDateFormat;
import java.util.LinkedHashMap;
/**
 * @author 金阳
 * @description
 * @create 2022-07-22 1:24
 */
@RestController
public class OssController {
    @Autowired
    OSS ossClient;
    @Value("${spring.cloud.alicloud.oss.endpoint}")
    private String endpoint;
    @Value("${spring.cloud.alicloud.oss.bucket}")
    private String bucket;
    @Value("${spring.cloud.alicloud.access-key}")
    private String accessId;
    @RequestMapping("/oss/policy")
    public R policy() {
        //https://gulimall-hello.oss-cn-beijing.aliyuncs.com/hahaha.jpg
        String host = "https://" + bucket + "." + endpoint; // host的格式为 bucketname.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";
        String format = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
        String dir = format + "/"; // 用户上传文件时指定的前缀。
        Map<String, String> respMap = null;
        try {
            long expireTime = 30;
            long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
            Date expiration = new Date(expireEndTime);
            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));
        } catch (Exception e) {
            // Assert.fail(e.getMessage());
            System.out.println(e.getMessage());
        }
        return R.ok().put("data",respMap);
    }
}

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
    alicloud:
      access-key: LTAI5tQRCX6FBx77qqhepLo9
      secret-key: UGvWNebBJusYPTIv9kRfBsEckthRqF
      oss:
        endpoint: oss-cn-hangzhou.aliyuncs.com
        bucket: gulimall-jerry-jy
  application:
    name: gulimall-third-party
server:
  port: 30000

spring.application.name=gulimall-third-party
spring.cloud.nacos.config.server-addr=127.0.0.1:8848
spring.cloud.nacos.config.namespace=0b0b4ca3-539e-44ed-ab10-1f9ac6af6458
spring.cloud.nacos.config.ext-config[0].data-id=oss.yml
spring.cloud.nacos.config.ext-config[0].group=DEFAULT_GROUP
spring.cloud.nacos.config.ext-config[0].refresh=true

        - id: third_party_route
          uri: lb://gulimall-third-party
          predicates:
            - Path=/api/thirdparty/**
          filters:
            - RewritePath=/api/thirdparty/(?<segment>.*),/$\{segment}