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用Java获取网站源

面试问答 更新时间: 发布时间: IT归档 最新发布 模块sitemap 名妆网 法律咨询 聚返吧 英语巴士网 伯小乐 网商动力

用Java获取网站源

您可以得到低级别的请求,只需通过套接字请求即可。在Java中看起来像

// Arg[0] = Hostname// Arg[1] = File like index.htmlpublic static void main(String[] args) throws Exception {    SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();    SSLSocket sslsock = (SSLSocket) factory.createSocket(args[0], 443);    SSLSession session = sslsock.getSession();    X509Certificate cert;    try {        cert = (X509Certificate) session.getPeerCertificates()[0];    } catch (SSLPeerUnverifiedException e) {        System.err.println(session.getPeerHost() + " did not present a valid cert.");        return;    }    // Now use the secure socket just like a regular socket to read pages.    PrintWriter out = new PrintWriter(sslsock.getOutputStream());    out.write("GET " + args[1] + " HTTP/1.0rnrn");    out.flush();    BufferedReader in = new BufferedReader(new InputStreamReader(sslsock.getInputStream()));    String line;    String regExp = ".*<a href="(.*)">.*";    Pattern p = Pattern.compile( regExp, Pattern.CASE_INSENSITIVE );    while ((line = in.readLine()) != null) {        // Using Oscar's RegEx.        Matcher m = p.matcher( line );          if( m.matches() ) { System.out.println( m.group(1) );        }    }    sslsock.close();}


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