我是如何白嫖 Github 服务器自动抓取每日必应壁纸的？（二）

/**
 * <p>
 * 网络请求操作工具类
 *
 * @author niujinpeng
 * @link https://github.com/niumoo
 */
public class HttpUtls {
    /**
     * 获取 HTTP 连接
     *
     * @param url
     * @return
     * @throws IOException
     */
    public static HttpURLConnection getHttpUrlConnection(String url) throws IOException {
        URL httpUrl = new URL(url);
        HttpURLConnection httpConnection = (HttpURLConnection)httpUrl.openConnection();
        httpConnection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36");
        return httpConnection;
    }
    /**
     * 请求指定 URL 的内容
     *
     * @param url
     * @return
     * @throws IOException
     */
    public static String getHttpContent(String url) throws IOException {
        HttpURLConnection httpUrlConnection = getHttpUrlConnection(url);
        StringBuilder stringBuilder = new StringBuilder();
        // 获得输入流
        try (InputStream input = httpUrlConnection.getInputStream(); BufferedInputStream bis = new BufferedInputStream(
            input);) {
            byte[] buffer = new byte[1024];
            int len = -1;
            // 读到文件末尾则返回-1
            while ((len = bis.read(buffer)) != -1) {
                stringBuilder.append(new String(buffer, 0, len));
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            httpUrlConnection.disconnect();
        }
        return stringBuilder.toString();
    }
}

/**
 * @author niujinpeng
 * @link https://github.com/niumoo
 */
public class Wallpaper {
    // BING API
    private static String BING_API = "https://cn.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1&nc=1612409408851&pid=hp&FORM=BEHPTB&uhd=1&uhdwidth=3840&uhdheight=2160";
    private static String BING_URL = "https://cn.bing.com";
    public static void main(String[] args) throws IOException {
        String httpContent = HttpUtls.getHttpContent(BING_API);
        JSONObject jsonObject = JSON.parseObject(httpContent);
        JSONArray jsonArray = jsonObject.getJSONArray("images");
        // 图片地址
        String url = BING_URL + (String)jsonArray.getJSONObject(0).get("url");
        url = url.substring(0, url.indexOf("&"));
        // 图片时间
        String enddate = (String)jsonArray.getJSONObject(0).get("enddate");
        // 图片版权
        String copyright = (String)jsonArray.getJSONObject(0).get("copyright");
        // 格式化为 MD 格式
        String text = String.format("%s | [%s](%s) ", enddate, copyright, url) + System.lineSeparator();
        System.out.println(text);
        // 写入 MD 文件
        Path path = Paths.get("README.md");
        if (!Files.exists(path)) {
            Files.createFile(path);
        }
        List<String> allLines = Files.readAllLines(path);
        allLines.set(0, text);
        Files.write(path, "## Bing Wallpaper".getBytes());
        Files.write(path, System.lineSeparator().getBytes(), StandardOpenOption.APPEND);
        Files.write(path, allLines, StandardOpenOption.APPEND);
    }
}

20210226 | [挂在锦里街上的红灯笼，中国成都 (© Philippe LEJEANVRE/Getty Images)](https://cn.bing.com/th?id=OHR.JinliStreet_ZH-CN3020276206_UHD.jpg)

# This workflow will build a Java project with Maven
# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
name: Java CI with Maven
on:
  schedule:
    # 定时执行，Runs at 17:00 UTC every day
    - cron:  '0 17 * * *'
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - name: Set up JDK 1.8
      uses: actions/setup-java@v1
      with:
        java-version: 1.8
    - name: Build with Maven
      run: mvn -B package --file pom.xml
    - name: Run Java Application
      run: java -jar target/bing-wallpaper-jar-with-dependencies.jar
    - name: Commit files
      run: |
         git config --local user.email "your_github_email@126.com"
         git config --local user.name "your_github_name"
         git add README.md
         git commit -m "update readme.md"
    - name: Push changes
      uses:  ad-m/github-push-action@master
      with:
         github_token: ${{ secrets.MY_GIT_TOKEN }}
         branch: main