基于Java爬取微博数据(四) 获取 图片 or 视频

//locallimit.us.sinaimg.cn/o0/RSkMM0NElx08f30vCBPO01041200MgYx0E010.mp4?label=mp4_720p&template=1280x720.25.0&media_id=5036768815153197&tp=8x8A3El:YTkl0eM8&us=0&ori=1&bf=4&ot=h&lp=0000tfMx8&ps=mZ6WB&uid=66f6G2&ab=,8013-g0,3601-g27&Expires=1716360984&ssig=8XIVHnvPwu&KID=unistore,video

package com.ruoyi.web.controller.demo.controller;

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * dongao
 * 2024/9/20
 * 9月
 */
public class DemoWeiBoDown {
    public static void main(String[] args) {
        String imageUrl = "https://wx4.sinaimg.cn/orj360/001Q8zQmly1hpy4e694vyj60j60can2r02.jpg";
        String mp4Url = "https://locallimit.us.sinaimg.cn/o0/fn1ZOcw6lx08f0fwPoH601041200BRMn0E010.mp4?label=mp4_720p&template=1280x720.25.0&media_id=5036142555496496&tp=8x8A3El:7fHprYw&us=0&ori=1&bf=4&ot=h&lp=0000tfMx8&ps=mZ6WB&uid=66f6G2&ab=,8013-g0,3601-g36,3601-g27,3601-g27&Expires=1716201414&ssig=B05wQvtmef&KID=unistore,video";
        String filename = imageUrl.substring(imageUrl.lastIndexOf("/") + 1);
        String filename2 = mp4Url.substring(mp4Url.lastIndexOf("/") + 1, mp4Url.indexOf("?"));
        downloadPicture(imageUrl, "E:\\2024weibo\\"+filename);
        downloadPicture(mp4Url, "E:\\2024weibo\\"+filename2);
    }

    /**
     * 下载图片到指定路径
     *
     * @param imageUrl 图片的URL地址
     * @param savePath 图片保存的本地路径
     */
    public static void downloadPicture(String imageUrl, String savePath){

        BufferedInputStream in = null;
        FileOutputStream out = null;
        HttpURLConnection connection = null;
        try {
            // 创建URL对象并打开连接
            URL url = new URL(imageUrl);
            connection = (HttpURLConnection) url.openConnection();
            // 设置请求方法为GET
            connection.setRequestMethod("GET");
            // 建立连接
            connection.connect();

            // 获取响应码并判断是否下载成功
            int responseCode = connection.getResponseCode();
            if (responseCode == HttpURLConnection.HTTP_OK) {
                // 创建输入流和输出流，用于读取和保存图片
                in = new BufferedInputStream(connection.getInputStream());
                out = new FileOutputStream(savePath);

                // 缓冲区，用于一次读取和写入一定量的数据
                byte[] buffer = new byte[1024];
                int bytesRead;
                // 循环读取直到没有数据
                while ((bytesRead = in.read(buffer)) != -1) {
                    out.write(buffer, 0, bytesRead);
                }
                System.out.println("图片/视频 下载成功，保存路径：" + savePath);
            } else {
                // 响应码不为HTTP_OK，下载失败
                System.out.println("无法下载图片/视频，响应码：" + responseCode);
            }

        }catch (Exception e) {
            // 捕获异常并打印堆栈信息
            e.printStackTrace();
        }finally {
            // 无论成功或失败，最后都关闭流和连接
            // 关闭输入流
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    // 将IO异常转为运行时异常抛出
                    throw new RuntimeException(e);
                }
            }
            // 关闭输出流
            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                    // 将IO异常转为运行时异常抛出
                    throw new RuntimeException(e);
                }
            }
            // 关闭连接
            if (connection != null) {
                connection.disconnect();
            }
        }
    }
}