Bagaimana untuk memuat turun video ke tempatan di java

1.加载servlet容器

不能使用main方法直接调用

public static boolean httpDownload(String httpUrl, String saveFile) {
      // 1.下载网络文件
      int byteRead;
      URL url;
      try {
          url = new URL(httpUrl);
      } catch (MalformedURLException e1) {
          e1.printStackTrace();
          return false;
      }

      try {
          //2.获取链接
          URLConnection conn = url.openConnection();
          //3.输入流
          InputStream inStream = conn.getInputStream();
          //3.写入文件
          FileOutputStream fs = new FileOutputStream(saveFile);

          byte[] buffer = new byte[1024];
          while ((byteRead = inStream.read(buffer)) != -1) {
              fs.write(buffer, 0, byteRead);
          }
          inStream.close();
          fs.close();
          return true;
      } catch (FileNotFoundException e) {
          e.printStackTrace();
          return false;
      } catch (IOException e) {
          e.printStackTrace();
          return false;
      }
  }


  @Test
  public void httpDownload() {
      httpDownload("http://video.zhihuishu.com/zhs/ablecommons/demo/201806/dddee1c446314b84a26c74a8def3c3c7.mp4","E:\\test/22.mp4");
  }

2.添加common-io依赖

import org.apache.commons.io.FileUtils;

import java.io.File;
import java.net.URL;

public class TestDownloadFile {

    public static void main(String[] args) throws Exception{
        String urlStr = "https://img2018.cnblogs.com/i-beta/1278703/201911/1278703-20191128121650595-812419505.png";
        URL url = new URL(urlStr);
        String tempFileName = "E://a.png";
        File temp = new File(tempFileName);
        FileUtils.copyURLToFile(url, temp);
    }
}

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