第一步：导入依赖`

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.7.RELEASE</version>
    </parent>
    <dependencies>
        <!-- springboot web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- springboot test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--thymeleaf-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
            <version>2.2.8.RELEASE</version>
        </dependency>

        <!--七牛-->
        <dependency>
            <groupId>com.qiniu</groupId>
            <artifactId>qiniu-java-sdk</artifactId>
            <version>7.7.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.6</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.47</version>
        </dependency>
        <!--工具包-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.8</version>
        </dependency>
        <!-- hutool工具类-->
        <!-- https://mvnrepository.com/artifact/cn.hutool/hutool-all -->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.7.12</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
            <version>2.3.7.RELEASE</version>
        </dependency>
    </dependencies>

第二步：application.yml

server:
  port: 8080

spring:
  servlet:
    multipart:
      enabled: true #是否启用http上传处理
      max-request-size: 100MB #最大请求文件的大小
      max-file-size: 100MB #设置单个文件最大长度
      file-size-threshold: 20MB #当文件达到多少时进行磁盘写入

第三步：创建工具类

package com.xiaoxu.utils;
import com.google.gson.Gson;
import com.qiniu.common.QiniuException;
import com.qiniu.http.Response;
import com.qiniu.storage.BucketManager;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.Region;
import com.qiniu.storage.UploadManager;
import com.qiniu.storage.model.DefaultPutRet;
import com.qiniu.util.Auth;

/**
 * 七牛云工具类
 */
public class QiniuUtils {
    public  static String accessKey = "jxRsWOFclqe7uBYXhFjmVaz8b57n_SCJnhWeJKat";
    public  static String secretKey = "ZLW8nEmUVCRiSTZXN4DBpHqHefuclidjHHHh8R0y";
    public  static String bucket = "xiaoxu-news";

    public static void upload2Qiniu(String filePath,String fileName){
        //构造一个带指定Zone对象的配置类
        Configuration cfg = new Configuration(Region.region0());
        UploadManager uploadManager = new UploadManager(cfg);
        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);
        try {
            Response response = uploadManager.put(filePath, fileName, upToken);
            //解析上传成功的结果
            DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
            System.out.println("putRet" + putRet);
        } catch (QiniuException ex) {
            Response r = ex.response;
            try {
                System.err.println(r.bodyString());
            } catch (QiniuException ex2) {
                //ignore
            }
        }
    }

    //上传文件
    public static void upload2Qiniu(byte[] bytes, String fileName){
        //构造一个带指定Zone对象的配置类
        Configuration cfg = new Configuration(Region.region0());
        //...其他参数参考类注释
        UploadManager uploadManager = new UploadManager(cfg);

        //默认不指定key的情况下，以文件内容的hash值作为文件名
        String key = fileName;
        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);
        try {
            Response response = uploadManager.put(bytes, key, upToken);
            //解析上传成功的结果
            DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
            System.out.println("key:" + putRet.key);
            System.out.println("hash:" + putRet.hash);
        } catch (QiniuException ex) {
            Response r = ex.response;
            System.err.println(r.toString());
            try {
                System.err.println(r.bodyString());
            } catch (QiniuException ex2) {
                //ignore
            }
        }
    }

    //删除文件
    public static void deleteFileFromQiniu(String fileName){
        //构造一个带指定Zone对象的配置类
        Configuration cfg = new Configuration(Region.huadong());
        String key = fileName;
        Auth auth = Auth.create(accessKey, secretKey);
        BucketManager bucketManager = new BucketManager(auth, cfg);
        try {
            bucketManager.delete(bucket, key);
        } catch (QiniuException ex) {
            //如果遇到异常，说明删除失败
            System.err.println(ex.code());
            System.err.println(ex.response.toString());
        }
    }
}

第四步：controller 测试

package com.xiaoxu.controller;

import com.xiaoxu.service.VideoService;
import com.xiaoxu.utils.QiniuUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.FileInputStream;
import java.io.IOException;
import java.util.UUID;

/**
 * @Auther 徐富林
 * @Date
 */
@Slf4j
@RestController
@RequestMapping("/video")
public class VideoController {

    @Autowired
    private VideoService videoService;

    @PostMapping(value = "/image")
    private String upLoadImage(@RequestParam("file") MultipartFile file) throws IOException {

        try {
            //获取原始文件名
            String originalFilename = file.getOriginalFilename();
            int lastIndexOf = originalFilename.lastIndexOf(".");
            //获取文件后缀
            String suffix = originalFilename.substring(lastIndexOf - 1);
            //使用UUID随机产生文件名称，防止同名文件覆盖
            String fileName = UUID.randomUUID().toString() + suffix;
            QiniuUtils.upload2Qiniu(file.getBytes(),fileName);
            return "上传成功";
        } catch (IOException e) {
            e.printStackTrace();
            return "上传失败";
        }


    }
}

第五步：postman测试

删除测试：controller

@RequestMapping("/delImage")
    public String delImage(){
        try {
            String key = "2dc17e59-e5f1-4b31-81c6-9f6fc2983f932.jpg";
            QiniuUtils.deleteFileFromQiniu(key);
            return "删除成功";
        } catch (Exception e) {
            e.printStackTrace();
            return "删除失败";
        }

    }