<dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
        <!-- 上传文件依赖组件 -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.5</version>
        </dependency>

        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.2.2</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- aliyun oss -->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.6.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.2.7.RELEASE</version>
            <scope>test</scope>
        </dependency>

    </dependencies>
    <repositories>
        <repository>
            <id>aliyun</id>
            <name>aliyun Repository</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

package top.yangbuyi.utils;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import top.yangbuyi.utils.config.OSSConfig;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

/**
 * @description: 杨不易网站:www.yby6.com
 * @program: yangbuyispringcloudparent
 * @ClassName: OSSUtils
 * @create: 2020-08-11 23:09
 * @author: yangbuyi
 * @since： JDK1.8
 * @OSSUploadUtil: 阿里云OSS文件上传工具类
 **/

public class OSSUploadUtil {

      private static OSSConfig config = null;

      /**
       *
       * @MethodName: uploadFile
       * @Description: OSS单文件上传
       * @param file
       * @param fileType 文件后缀
       * @return String 文件地址
       */
      public static String uploadFile(File file, String fileType){
            config = config==null?new OSSConfig():config;
            String fileName = config.getPicLocation()+ UUID.randomUUID().toString().toUpperCase().replace("-", "")+"."+fileType; //文件名，根据UUID来
            return putObject(file,fileType,fileName);
      }

      /**
       *
       * @MethodName: updateFile
       * @Description: 更新文件:只更新内容，不更新文件名和文件地址。
       *      (因为地址没变，可能存在浏览器原数据缓存，不能及时加载新数据，例如图片更新，请注意)
       * @param file
       * @param fileType
       * @param oldUrl
       * @return String
       */
      public static String updateFile(File file,String fileType,String oldUrl){
            String fileName = getFileName(oldUrl);
            if(fileName==null) return null;
            return putObject(file,fileType,fileName);
      }

      /**
       *
       * @MethodName: replaceFile
       * @Description: 替换文件:删除原文件并上传新文件，文件名和地址同时替换
       *      解决原数据缓存问题，只要更新了地址，就能重新加载数据)
       * @param file
       * @param fileType 文件后缀
       * @param oldUrl 需要删除的文件地址
       * @return String 文件地址
       */
      public static String replaceFile(File file,String fileType,String oldUrl){
            boolean flag = deleteFile(oldUrl);      //先删除原文件
            if(!flag){
                  //更改文件的过期时间，让他到期自动删除。
            }
            return uploadFile(file, fileType);
      }

      /**
       *
       * @MethodName: deleteFile
       * @Description: 单文件删除
       * @param fileUrl 需要删除的文件url
       * @return boolean 是否删除成功
       */
      public static boolean deleteFile(String fileUrl){
            config = config==null?new OSSConfig():config;

            String bucketName = OSSUploadUtil.getBucketName(fileUrl);       //根据url获取bucketName
            String fileName = OSSUploadUtil.getFileName(fileUrl);           //根据url获取fileName
            if(bucketName==null||fileName==null) return false;
            OSSClient ossClient = null;
            try {
                  ossClient = new OSSClient(config.getEndpoint(), config.getAccessKeyId(), config.getAccessKeySecret());
                  GenericRequest request = new DeleteObjectsRequest(bucketName).withKey(fileName);
                  ossClient.deleteObject(request);
            } catch (Exception oe) {
                  oe.printStackTrace();
                  return false;
            } finally {
                  ossClient.shutdown();
            }
            return true;
      }

      /**
       *
       * @MethodName: batchDeleteFiles
       * @Description: 批量文件删除(较快)：适用于相同endPoint和BucketName
       * @param fileUrls 需要删除的文件url集合
       * @return int 成功删除的个数
       */
      public static int deleteFile(List<String> fileUrls){
            int deleteCount = 0;    //成功删除的个数
            String bucketName = OSSUploadUtil.getBucketName(fileUrls.get(0));       //根据url获取bucketName
            List<String> fileNames = OSSUploadUtil.getFileName(fileUrls);         //根据url获取fileName
            if(bucketName==null||fileNames.size()<=0) return 0;
            OSSClient ossClient = null;
            try {
                  ossClient = new OSSClient(config.getEndpoint(), config.getAccessKeyId(), config.getAccessKeySecret());
                  DeleteObjectsRequest request = new DeleteObjectsRequest(bucketName).withKeys(fileNames);
                  DeleteObjectsResult result = ossClient.deleteObjects(request);
                  deleteCount = result.getDeletedObjects().size();
            } catch (OSSException oe) {
                  oe.printStackTrace();
                  throw new RuntimeException("OSS服务异常:", oe);
            } catch (ClientException ce) {
                  ce.printStackTrace();
                  throw new RuntimeException("OSS客户端异常:", ce);
            } finally {
                  ossClient.shutdown();
            }
            return deleteCount;

      }

      /**
       *
       * @MethodName: batchDeleteFiles
       * @Description: 批量文件删除(较慢)：适用于不同endPoint和BucketName
       * @param fileUrls 需要删除的文件url集合
       * @return int 成功删除的个数
       */
      public static int deleteFiles(List<String> fileUrls){
            int count = 0;
            for (String url : fileUrls) {
                  if(deleteFile(url)){
                        count++;
                  }
            }
            return count;
      }

      /**
       *
       * @MethodName: putObject
       * @Description: 上传文件
       * @param file
       * @param fileType
       * @param fileName
       * @return String
       */
      private static String putObject(File file,String fileType,String fileName){
            config = config==null?new OSSConfig():config;
            String url = null;      //默认null
            OSSClient ossClient = null;
            try {
                  ossClient = new OSSClient(config.getEndpoint(), config.getAccessKeyId(), config.getAccessKeySecret());
                  InputStream input = new FileInputStream(file);
                  ObjectMetadata meta = new ObjectMetadata();             // 创建上传Object的Metadata
                  meta.setContentType(OSSUploadUtil.contentType(fileType));       // 设置上传内容类型
                  meta.setCacheControl("no-cache");                   // 被下载时网页的缓存行为
                  PutObjectRequest request = new PutObjectRequest(config.getBucketName(), fileName,input,meta);           //创建上传请求
                  ossClient.putObject(request);
                  url = config.getEndpoint().replaceFirst("https://","https://"+config.getBucketName()+"."+ config.getEndpoint())+"/"+fileName;       //上传成功再返回的文件路径
            } catch (OSSException oe) {
                  oe.printStackTrace();
                  return null;
            } catch (ClientException ce) {
                  ce.printStackTrace();
                  return null;
            } catch (FileNotFoundException e) {
                  e.printStackTrace();
                  return null;
            } finally {
                  ossClient.shutdown();
            }
            return url;
      }

      /**
       *
       * @MethodName: contentType
       * @Description: 获取文件类型
       * @param FileType
       * @return String
       */
      private static String contentType(String fileType){
            fileType = fileType.toLowerCase();
            String contentType = "";
            switch (fileType) {
                  case "bmp": contentType = "image/bmp";
                        break;
                  case "gif": contentType = "image/gif";
                        break;
                  case "png":
                  case "jpeg":
                  case "jpg": contentType = "image/jpeg";
                        break;
                  case "html":contentType = "text/html";
                        break;
                  case "txt": contentType = "text/plain";
                        break;
                  case "vsd": contentType = "application/vnd.visio";
                        break;
                  case "ppt":
                  case "pptx":contentType = "application/vnd.ms-powerpoint";
                        break;
                  case "doc":
                  case "docx":contentType = "application/msword";
                        break;
                  case "xml":contentType = "text/xml";
                        break;
                  case "mp4":contentType = "video/mp4";
                        break;
                  default: contentType = "application/octet-stream";
                        break;
            }
            return contentType;
      }

      /**
       *
       * @MethodName: getBucketName
       * @Description: 根据url获取bucketName
       * @param fileUrl 文件url
       * @return String bucketName
       */
      private static String getBucketName(String fileUrl){
            String http = "http://";
            String https = "https://";
            int httpIndex = fileUrl.indexOf(http);
            int httpsIndex = fileUrl.indexOf(https);
            int startIndex  = 0;
            if(httpIndex==-1){
                  if(httpsIndex==-1){
                        return null;
                  }else{
                        startIndex = httpsIndex+https.length();
                  }
            }else{
                  startIndex = httpIndex+http.length();
            }
            int endIndex = fileUrl.indexOf(".oss-");
            return fileUrl.substring(startIndex, endIndex);
      }

      /**
       *
       * @MethodName: getFileName
       * @Description: 根据url获取fileName
       * @param fileUrl 文件url
       * @return String fileName
       */
      private static String getFileName(String fileUrl){
            String str = "yby6.com/";
            int beginIndex = fileUrl.indexOf(str);
            if(beginIndex==-1) return null;
            return fileUrl.substring(beginIndex+str.length());
      }

      /**
       *
       * @MethodName: getFileName
       * @Description: 根据url获取fileNames集合
       * @param fileUrl 文件url
       * @return List<String>  fileName集合
       */
      private static List<String> getFileName(List<String> fileUrls){
            List<String> names = new ArrayList<>();
            for (String url : fileUrls) {
                  names.add(getFileName(url));
            }
            return names;
      }
}

#阿里云OSS配置
endpoint = oss-img.yby6.com # 访问节点  这里表示 uri访问的图片域名相当于一个域名
bucketName = yangbuyi-img # 你创建的Bucket
picLocation = 文件夹路径 随便填  如: yangbuyi/
accessKeyId = 第一张图片要你开通的 ID
accessKeySecret = 第一张图片要你开通的 密码

package top.yangbuyi.utils;


import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * @description: 杨不易网站:www.yby6.com
 * @program: yangbuyispringcloudparent
 * @ClassName: SystemConfig
 * @create: 2020-08-12 00:04
 * @author: yangbuyi
 * @since： JDK1.8
 * @SystemConfig:
 **/
public class SystemConfig {

     private static final String CONFIG_PROPERTIES="config.properties";

     public static String getConfigResource(String key) throws IOException {
         ClassLoader loader = Thread.currentThread().getContextClassLoader();
         Properties properties = new Properties();
         InputStream in = loader.getResourceAsStream(CONFIG_PROPERTIES);
         properties.load(in);
         String value = properties.getProperty(key);
         // 编码转换，从ISO-8859-1转向指定编码
         value = new String(value.getBytes("ISO-8859-1"), "UTF-8");
         in.close();
         return value;
     }
}

package top.yangbuyi.utils.config;


import top.yangbuyi.utils.SystemConfig;

import java.io.IOException;

/**
 * @description: 杨不易网站:www.yby6.com
 * @program: yangbuyispringcloudparent
 * @ClassName: OSSConfig
 * @create: 2020-08-12 00:04
 * @author: yangbuyi
 * @since： JDK1.8
 * @OSSConfig:
 **/

public class OSSConfig{
     private  String endpoint;       //连接区域地址
     private  String accessKeyId;    //连接keyId
     private  String accessKeySecret;    //连接秘钥
     private  String bucketName;     //需要存储的bucketName
     private  String picLocation;    //图片保存路径

     /*
     * 加载配置文件 初始化 参数
     * 也可 yml加载 看你自己  
     * */


     public OSSConfig() {
         try {
              this.endpoint = SystemConfig.getConfigResource("endpoint");
              this.bucketName = SystemConfig.getConfigResource("bucketName");
              this.picLocation = SystemConfig.getConfigResource("picLocation");
              this.accessKeyId = SystemConfig.getConfigResource("accessKeyId");
              this.accessKeySecret = SystemConfig.getConfigResource("accessKeySecret");
         } catch (IOException e) {
              e.printStackTrace();
         }
     }

     public String getEndpoint() {
         return endpoint;
     }
     public void setEndpoint(String endpoint) {
         this.endpoint = endpoint;
     }
     public String getAccessKeyId() {
         return accessKeyId;
     }
     public void setAccessKeyId(String accessKeyId) {
         this.accessKeyId = accessKeyId;
     }
     public String getAccessKeySecret() {
         return accessKeySecret;
     }
     public void setAccessKeySecret(String accessKeySecret) {
         this.accessKeySecret = accessKeySecret;
     }
     public String getBucketName() {
         return bucketName;
     }
     public void setBucketName(String bucketName) {
         this.bucketName = bucketName;
     }
     public String getPicLocation() {
         return picLocation;
     }
     public void setPicLocation(String picLocation) {
         this.picLocation = picLocation;
     }

     @Override
     public String toString() {
         return "OSSConfig{" +
               "endpoint='" + endpoint + '\'' +
               ", accessKeyId='" + accessKeyId + '\'' +
               ", accessKeySecret='" + accessKeySecret + '\'' +
               ", bucketName='" + bucketName + '\'' +
               ", picLocation='" + picLocation + '\'' +
               '}';
     }
}

import org.junit.Test;
import top.yangbuyi.utils.OSSUploadUtil;
import top.yangbuyi.utils.OSSUtils;

import java.io.File;

/**
 * @description: 杨不易网站:www.yby6.com
 * @program: yangbuyispringcloudparent
 * @ClassName: two
 * @create: 2020-08-12 00:06
 * @author: yangbuyi
 * @since： JDK1.8
 * @two: OSSUploadUtil.uploadFile(File file, String fileType) //单文件上传，type:文件后缀名
 * OSSUploadUtil.updateFile(File file, String fileType, String oldUrl)//更新文件:只更新内容，不更新文件名和文件地址。
 * OSSUploadUtil.replaceFile(File file, String fileType, String oldUrl)//替换文件，删除源文件并上传新文件，文件名和地址也改变
 * OSSUploadUtil.deleteFile(List<String> fileUrls)  //删除多文件，根据问价url来自定获取其中的bucket和文件名，用于bucket和文件名可能存在不同的，循环调用deleteFile方法
 * OSSUploadUtil.deleteFile(String fileUrl) //删除单文件
 * OSSUploadUtil.deleteFiles(List<String> fileUrls)  //删除多文件，根据配置直接取删除多个文件，bucket和文件地址从配置中获取，用于多文件bucket和文件名都相同的
 **/

public class two {

     @Test
     public void t() {
         // 文件上传
         File file = new File("F:\\美女图片\\dac18dd66fbbf53ddd55563b5edecac6.jpg");
         String jpg = OSSUploadUtil.uploadFile(file, "jpg");
         System.out.println(jpg);


         // 更新 只更新 图片  不更新名称
         System.out.println("更新图片开始:" + "http://oss-img.yby6.com/github.png");
         File file2 = new File("F:\\美女图片\\httpsimg2020.cnblogs.comblog17352552020081735255-20200805220326890-2058657956.jpg");
         String jpg1 = OSSUploadUtil.updateFile(file2, "jpg", "http://oss-img.yby6.com/github.png");
         System.out.println("更新后的：" + jpg1);

         // 删除  根据url 删除图片
//       boolean b = OSSUploadUtil.deleteFile("https://yangbuyi.oss-cn-beijing.aliyuncs.com/imgBAA8AD5484D847E09BDB535765A9EEB9.jpg");
//       System.out.println(b);

     }


}