项目中有这样一个需求，网页上上传了一个视频，需要获取此视频的时长、大小，把这两个数据返回给前台在页面显示。后台使用的是springboot框架，项目部署在linux上面。下面是核心代码：

1、pom文件中需要导入的jar包依赖

(分为两部分：核心包、ffmpeg包两部分，ffmpeg包又分为Windows环境以及Linux环境，同时又区分32位系统以及64位系统。针对于不同的运行环境要导入不同的包，这一点对于开发、测试环境为Window而生产环境为Linux的情况，尤其要注意需要导入所有的包，使其在两种环境下都能够使用)

<dependency> <groupId>ws.schild</groupId> <artifactId>jave-all-deps</artifactId> <version>2.6.0</version> </dependency> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-core</artifactId> <version>2.4.5</version> </dependency> <!-- window32位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-win32</artifactId> <version>2.4.5</version> </dependency> <!-- window64位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-win64</artifactId> <version>2.4.5</version> </dependency> <!-- linux32位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-linux32</artifactId> <version>2.4.6</version> </dependency> <!-- linux64位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-linux64</artifactId> <version>2.4.6</version> </dependency>

2、controller层代码

package com.aaa.bbb.controller;import io.swagger.annotations.Api;import lombok.extern.slf4j.Slf4j;import org.apache.commons.io.FileUtils;import org.springframework.util.ResourceUtils;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 ws.schild.jave.MultimediaInfo;import ws.schild.jave.MultimediaObject;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.math.BigDecimal;import java.math.RoundingMode;import java.nio.channels.FileChannel;@Slf4j@RestController@RequestMapping("/readVideo")@Api(tags = "获取视频时长、大小相关信息的接口")public class ReadVideoController {/** * 获取视频时长 * * @param fileUrl * @return */@PostMapping("/videoLengthAndSize")public static String getLengthAndSize(@RequestParam String fileUrl) throws FileNotFoundException { ReadVideoController r = new ReadVideoController(); String path = ResourceUtils.getURL("classpath:").getPath() + "static"; System.out.println("666666666666666666666666666666【" + path + "】666666666666666666666666666666】"); fileUrl = path + fileUrl; String videoLength = r.ReadVideoTime(fileUrl);//视频时长 System.out.println("===========================视频时长：" + videoLength + "==========================="); return videoLength;}/** * 视频时长 * * @param FileUrl * @return */public static String ReadVideoTime(String FileUrl) { File source = new File(FileUrl); String length = ""; try { MultimediaObject instance = new MultimediaObject(source); MultimediaInfo result = instance.getInfo(); long ls = result.getDuration() / 1000; Integer hour = (int) (ls / 3600); Integer minute = (int) (ls % 3600) / 60; Integer second = (int) (ls - hour * 3600 - minute * 60); String hr = hour.toString(); String mi = minute.toString(); String se = second.toString(); if (hr.length() < 2) { hr = "0" + hr; } if (mi.length() < 2) { mi = "0" + mi; } if (se.length() < 2) { se = "0" + se; } length = hr + ":" + mi + ":" + se; } catch (Exception e) { e.printStackTrace(); } return length;} /** * 视频大小 * * @param source * @return */@SuppressWarnings({"resource"})public static String ReadVideoSize(File source) { FileChannel fc = null; String size = ""; try { FileInputStream fis = new FileInputStream(source); fc = fis.getChannel(); BigDecimal fileSize = new BigDecimal(fc.size()); size = fileSize.divide(new BigDecimal(1024 * 1024), 2, RoundingMode.HALF_UP) + "MB"; } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { if (null != fc) { try { fc.close(); } catch (IOException e) { e.printStackTrace(); } } } return size;}}

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