專案中有這樣一個需求，網頁上上傳了一個視訊，需要獲取此視訊的時長、大小，把這兩個資料返回給前臺在頁面顯示。後臺使用的是springboot框架，專案部署在linux上面。下面是核心程式碼：

1、pom檔案中需要匯入的jar包依賴

(分為兩部分：核心包、ffmpeg包兩部分，ffmpeg包又分為Windows環境以及Linux環境，同時又區分32位系統以及64位系統。針對於不同的執行環境要匯入不同的包，這一點對於開發、測試環境為Window而生產環境為Linux的情況，尤其要注意需要匯入所有的包，使其在兩種環境下都能夠使用)

  <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層程式碼

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 = "獲取視訊時長、大小相關資訊的介面")
public class ReadVideoController {

/**
 * 獲取視訊時長
 *
 * @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);//視訊時長

  System.out.println("===========================視訊時長：" + videoLength + "===========================");
  return videoLength;
}

/**
 * 視訊時長
 *
 * @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;
}

 /**
 * 視訊大小
 *
 * @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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