Jakarta commons-httpclient

/**
 * Http Client のサンプルプログラム.
 */
public final class App {

  /**
   * Keystore のパスワード.
   */
  private static final char[] KEY_STORE_PASS = "password".toCharArray();

  /**
   * Proxy サーバの IP アドレス.
   */
  private static final String PROXY_HOST = "192.168.1.2";

  /**
   * Proxy サーバの Port 番号.
   */
  private static final int PROXY_PORT = 3128;

  /**
   * デフォルトコンストラクタの無効化.
   */
  private App() {
    super();
  }

  /**
   * main.
   * @param args コマンド引数
   */
  public static void main(final String[] args) {

//    // 現在有効な暗号化アルゴリズムの列挙
//    for (Provider provider : Security.getProviders()) {
//      System.out.println("\"" + provider.getName() + "\"");
//      System.out.println(provider.getInfo());
//      System.out.println();
//    }

    try {
      final DefaultHttpClient httpClient = new DefaultHttpClient();

      // ---- SSL (HTTPS) の設定

      // KeyStore.getDefaultType() : SUNPKCS11, SUNPKCS11-dawin, etc.
      final KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
      final InputStream keyIs = App.class.getClassLoader().getResourceAsStream("keystore");
      keyStore.load(keyIs, KEY_STORE_PASS);
      keyIs.close();

      final TrustManagerFactory tmf =
        TrustManagerFactory.getInstance(
          TrustManagerFactory.getDefaultAlgorithm());
      tmf.init(keyStore);
      final SSLContext ctx = SSLContext.getInstance("TLS");
      ctx.init(null, tmf.getTrustManagers(), null);

      // 証明書のURLを検証しない
      final SSLSocketFactory socektFacotry
        = new SSLSocketFactory(
          ctx, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
      final Scheme scheme = new Scheme("https", 443, socektFacotry);

      httpClient.getConnectionManager().getSchemeRegistry().register(scheme);

      // ---- Proxy の設定

      final HttpHost proxy = new HttpHost(PROXY_HOST, PROXY_PORT);
      httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);


      // ---- HTTP GET (ログイン画面)

      final HttpGet loginGet
        = new HttpGet("https://hondou.homedns.org/squirrelmail/src/login.php");
      final HttpResponse loginRes = httpClient.execute(loginGet);

      System.out.println(EntityUtils.toString(loginRes.getEntity()));
      EntityUtils.consume(loginRes.getEntity());

      // ---- Cookie の取得
      // (httpClient を使い回せば自動的に次回の Request に添付されるので、通常は操作する
      // 必要なし)

//      for (Cookie cookie : httpClient.getCookieStore().getCookies()) {
//        System.out.println(cookie.getName() + ":" + cookie.getValue());
//      }

      // ---- ログイン処理
      // <form action="redirect.php" method="post" name="login_form"  >
      //   <input type="text" name="login_username"/>
      //   <input type="password" name="secretkey"/>
      //   <input type="submit" value="ログイン" />
      // </form>

      final List<NameValuePair> reqParamList = new ArrayList<NameValuePair>();
      reqParamList.add(new BasicNameValuePair("login_username", "*********"));
      reqParamList.add(new BasicNameValuePair("secretkey", "**********"));

      UrlEncodedFormEntity reqForm = new UrlEncodedFormEntity(reqParamList);

      final HttpPost redirectPost
        = new HttpPost("https://hondou.homedns.org/squirrelmail/src/redirect.php");
      redirectPost.setEntity(reqForm);

      final HttpResponse redirectRes = httpClient.execute(redirectPost);
      System.out.println("ログイン結果");
      System.out.println(redirectRes.getStatusLine());
      for (Header header : redirectRes.getAllHeaders()) {
        System.out.println(header);
      }

    } catch (Exception ex) {
      Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
    }
  }
}