java - 如何修复 java.io.IOException : Server returned HTTP response code: 403

Question

目前我正在使用此代码读取 xml 文件，它在我的个人 Ubuntu PC 上运行良好

   URL url = new URL("https://www.google.com/site-map-all.xml");
    InputStream inputFile = url.openStream();
    DocumentBuilderFactory dbFactory = 
    DocumentBuilderFactory.newInstance();
    DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
    Document doc = dBuilder.parse(inputFile);
    doc.getDocumentElement().normalize();

但是当我在 Ubuntu 服务器中运行相同的代码时显示错误

java.io.IOException: Server returned HTTP response code: 403 for URL: https://www.google.com/sitemap.xml at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1894) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:263)

谁能帮我找出问题所在吗？服务器问题出在哪里？

Answer 1

我只需要设置用户代理

    URL url = new URL("https://www.google.com/sitemap.xml");
    URLConnection urlc = url.openConnection();
    urlc.setRequestProperty("User-Agent", "Mozilla 5.0 (Windows; U; "
            + "Windows NT 5.1; en-US; rv:1.8.0.11) ");
    InputStream inputFile = urlc.getInputStream();