package org.jeecg.modules.wechat.api;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

/**
 * JAVA抖音解析
 * @Auth 南京陈冠希
 */
public class DouYinParse {
    public static void main(String[] args) {
        System.out.println(parseDouYinVideo("https://v.douyin.com/efKYWbU/"));
    }

    /**
     *
     * 解析抖音无水印视频
     * @param httpURL
     *            抖音视频分享链接
     * @return 抖音无水印视频链接
     */
    public static String parseDouYinVideo(String httpURL) {
        String result = null;
        // 获取重定向后的URL地址，并从中截取item_ids
        String itemIDs = getRedirectsURL(httpURL).split("/")[5];
        // 使用item_ids作为参数，请求携带有带水印的视频URL的JSON数据
        String jsonString = getJSON("https://www.iesdouyin.com/web/api/v2/aweme/iteminfo/?item_ids=" + itemIDs);
        // 使用FastJSON解析为JSONObject对象
        JSONObject json = JSON.parseObject(jsonString);
        // 解析JSON数据，获取带水印的视频URL
        Object videoURL = json.getJSONArray("item_list").getJSONObject(0).getJSONObject("video")
                .getJSONObject("play_addr").getJSONArray("url_list").get(0);
        // 替换URL关键位置，得到无水印视频URL
        result = videoURL.toString().replace("/playwm/", "/play/");
        return result;
    }

    /**
     *
     * 获取重定向后的URL地址
     * @param httpURL
     *            原URL
     * @return 重定向后的URL
     */
    public static String getRedirectsURL(String httpURL) {
        String result = null;
        HttpURLConnection conn = null;
        try {
            // 配置请求头
            conn = (HttpURLConnection) new URL(httpURL).openConnection();
            // 禁止重定向
            conn.setInstanceFollowRedirects(false);
            // 获取重定向后的URL
            result = conn.getHeaderField("Location");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            // 清理资源
            conn.disconnect();
        }
        return result;
    }

    /**
     *
     * 以GET的方式请求JSON数据
     * @param httpURL
     * @return 请求到的JSON数据
     */
    public static String getJSON(String httpURL) {
        HttpURLConnection connection = null;
        InputStream is = null;
        InputStreamReader isr = null;
        BufferedReader br = null;
        String result = null;
        try {
            URL url = new URL(httpURL);
            // 配置请求头

            connection = (HttpURLConnection) url.openConnection();
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("Accept-Encoding", "utf-8");
            connection.setRequestProperty("Host", "api-hl.amemv.com");
            connection.setRequestProperty("user-agent","Mozilla/5.0 (Linux; U; Android 2.2; en-us; Nexus One Build/FRF91) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1");
            connection.setRequestMethod("GET");
            // 发送HTTP连接请求
            connection.connect();
            // 如果请求连接成功则接收数据
            if (connection.getResponseCode() == 200) {
                // 读取并保存JSON数据
                is = connection.getInputStream();
                isr = new InputStreamReader(is, "UTF8");
                br = new BufferedReader(isr);
                StringBuffer sbf = new StringBuffer();
                String temp = null;
                while ((temp = br.readLine()) != null) {
                    sbf.append(temp);
                }
                result = sbf.toString();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            // 关闭资源
            try {
                if (null != br) {
                    br.close();
                }
                if (null != isr) {
                    isr.close();
                }
                if (null != is) {
                    is.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            // 清理资源
            connection.disconnect();
        }
        return result;
    }
}

想看隐藏的秘密吗？