博客

1.依赖

  <!-- 此依赖网上仓库没有，需自己找到，手动安装到本地仓库 -->
	<dependency>
        <groupId>local</groupId>
        <artifactId>jave</artifactId>
        <version>1.0.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.3</version>
    </dependency>

2. 启动类 添加（此步是为了让文件支持强转）：
   
   @SpringBootApplication( exclude = {MultipartAutoConfiguration.class})

   @Bean(“multipartResolver”)
   
   public CommonsMultipartResolver multipartResolver(){
   
   
   CommonsMultipartResolver resolver = new CommonsMultipartResolver();
   
   resolver.setDefaultEncoding(“UTF-8”);
   
   resolver.setMaxInMemorySize(10000);
   
   return resolver;
   
   }
   
   
   
   3.代码：
   
   public AttachmentDTO uploadVideo(MultipartFile multipartFile) {
   
   
   //强转（步骤2就是为这铺垫）
   
   CommonsMultipartFile cf = (CommonsMultipartFile)multipartFile;
   
   DiskFileItem fi = (DiskFileItem) cf.getFileItem();
   
   java.io.File source = fi.getStoreLocation();
   
   // 获取视频时长
   
   Encoder encoder = new Encoder();
   
   MultimediaInfo m = null;
   
   m = encoder.getInfo(source);
   
   long ls = m.getDuration()/1000;
   
   int hour = (int) (ls/3600);
   
   int minute = (int) (ls%3600)/60;
   
   int second = (int) (ls-hour
   
   3600-minute
   
   60);
   
   }