苹果发布会Keynotes下载

1. 技巧：提取 iTunes 中 Podcast 下载地址，更快下载苹果发布会的 Keynote
2. 问： 发布会视频怎么下载
3. https://podcasts.apple.com/cn/podcast/apple-events-video/id275834665
4. java实现调用http请求的几种常见方式

package com.example.demo;

import org.springframework.lang.Nullable;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public class HttpURLConnectionUtil {
    /**
     * Http get请求
     *
     * @param httpUrl 连接
     * @return 响应数据
     */
    public static String doGet(String httpUrl) {
        //链接
        HttpURLConnection connection = null;
        InputStream is = null;
        BufferedReader br = null;
        StringBuffer result = new StringBuffer();
        try {
            //创建连接
            URL url = new URL(httpUrl);
            connection = (HttpURLConnection) url.openConnection();
            //设置请求方式
            connection.setRequestMethod("GET");
            //设置连接超时时间
            connection.setReadTimeout(15000);
            //开始连接
            connection.connect();
            //获取响应数据
            if (connection.getResponseCode() == 200) {
                //获取返回的数据
                is = connection.getInputStream();
                if (null != is) {
                    br = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8));
                    String temp = null;
                    while (null != (temp = br.readLine())) {
                        System.out.println(temp);
                        result.append(temp);
                    }
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (null != br) {
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (null != is) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            //关闭远程连接
            connection.disconnect();
        }
        return result.toString();
    }

    /**
     * Http post请求
     *
     * @param httpUrl 连接
     * @param param   参数
     * @return
     */
    public static String doPost(String httpUrl, @Nullable String param) {
        StringBuffer result = new StringBuffer();
        //连接
        HttpURLConnection connection = null;
        OutputStream os = null;
        InputStream is = null;
        BufferedReader br = null;
        try {
            //创建连接对象
            URL url = new URL(httpUrl);
            //创建连接
            connection = (HttpURLConnection) url.openConnection();
            //设置请求方法
            connection.setRequestMethod("POST");
            //设置连接超时时间
            connection.setConnectTimeout(15000);
            //设置读取超时时间
            connection.setReadTimeout(15000);
            //DoOutput设置是否向httpUrlConnection输出，DoInput设置是否从httpUrlConnection读入，此外发送post请求必须设置这两个
            //设置是否可读取
            connection.setDoOutput(true);
            connection.setDoInput(true);
            //设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");
            connection.setRequestProperty("Content-Type", "application/json;charset=utf-8");

            //拼装参数
            if (null != param && param.equals("")) {
                //设置参数
                os = connection.getOutputStream();
                //拼装参数
                os.write(param.getBytes(StandardCharsets.UTF_8));
            }
            //设置权限
            //设置请求头等
            //开启连接
            //connection.connect();
            //读取响应
            if (connection.getResponseCode() == 200) {
                is = connection.getInputStream();
                if (null != is) {
                    br = new BufferedReader(new InputStreamReader(is, "GBK"));
                    String temp = null;
                    while (null != (temp = br.readLine())) {
                        result.append(temp);
                        result.append("\r\n");
                    }
                }
            }

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            //关闭连接
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (os != null) {
                try {
                    os.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            //关闭连接
            connection.disconnect();
        }
        return result.toString();
    }

    public static void main(String[] args) {
       // String message = doPost("https://tcc.taobao.com/cc/json/mobile_tel_segment.htm?tel=13026194071", "");
        for (int i = 1; i < 9999; i++) {
                          //"https://events-delivery.apple.com/0205eyyhwbbqexozkwmgccegwnjyrktg/vod_main_KYVtRmtKMbxMmJHvKTwKJVQuxEmzBjPm/cc/zh/zh_260.webvtt"
          //  String url = "https://events-delivery.apple.com/0205eyyhwbbqexozkwmgccegwnjyrktg/vod_main_KYVtRmtKMbxMmJHvKTwKJVQuxEmzBjPm/cc/en/en_" + i + ".webvtt";
            String url = "https://events-delivery.apple.com/0205eyyhwbbqexozkwmgccegwnjyrktg/vod_main_KYVtRmtKMbxMmJHvKTwKJVQuxEmzBjPm/cc/zh/zh_" + i + ".webvtt";
            String message = doGet(url);
        }
        //System.out.println(message);
    }
}

获取苹果发布会字幕地址：

• 1、打开url：https://www.apple.com/apple-events/
• 2、开始播放，选择字幕【中文】或者【英文】
• 3、F12打开源代码面板，或者页面空白处点右键，选择查看源代码
• 4、选择【Network】面板；
• 5、查看zh_1.webvtt的请求
• 6、查看 Headers 的 Request URL，调用方式是 GET