HtmlUnit小应用,Wifi客户端
学校里的无线网需要网页验证 = = 开机先开浏览器、登验证页面、输密码、点确定 很烦人有木有…… 而且验证页面不能关，这个页面每4分钟向服务器发一次消息 一旦验证页面关了网就断了 %>_<%~
?
转论坛的时候看到了HtmlUnit，心血来潮做了个客户端。
?
先介绍下HtmlUnit，可以把它理解成一个没有界面的浏览器，内置了javascript引擎，可以模拟javascript的运行（比分析页面然后模拟网页向服务器定时发信息的工作量少了很多）。
?
连接部分很简单，代码如下：
?
package WiFiControl;import com.gargoylesoftware.htmlunit.BrowserVersion;import com.gargoylesoftware.htmlunit.WebClient;import com.gargoylesoftware.htmlunit.html.HtmlElement;import com.gargoylesoftware.htmlunit.html.HtmlInput;import com.gargoylesoftware.htmlunit.html.HtmlPage;import java.util.Iterator;import javax.swing.JOptionPane;/** * htmlUnit模仿登陆Wifi认证页面 * * @author sdujq * */public class WifiIndex {public static HtmlPage resultPage;public static HtmlPage page;public static boolean working = false;public final static String INDEX = "http://192.168.8.10/portal/";/** * 连接Wifi认证页面 * * @throws Exception */public static void open() throws Exception {WebClient client = new WebClient(BrowserVersion.INTERNET_EXPLORER_8);client.waitForBackgroundJavaScript(10000);page = client.getPage(INDEX);System.gc();}/** * 登陆Wifi * * @param uname * 用户名 * @param upwd * 密码 * @return 是否连接成功 * @throws Exception * 囧囧有神 */public static boolean connect(String uname, String upwd) throws Exception {if (page == null) {open();}Iterator<HtmlElement> nodes = page.getHtmlElementDescendants().iterator();HtmlInput name = null;HtmlInput pwd = null;HtmlElement bt = null;while (nodes.hasNext()) {HtmlElement node = nodes.next();String nameArribute = node.getAttribute("name");if (nameArribute.equals("username")) {name = (HtmlInput) node;} else if (nameArribute.equals("password")) {pwd = (HtmlInput) node;} else if (nameArribute.equals("Submit1")) {bt = node;}}name.setValueAttribute(uname);pwd.setValueAttribute(upwd);resultPage = bt.click();Iterator<HtmlElement> elist = resultPage.getHtmlElementDescendants().iterator();String res = null;while (elist.hasNext()) {res = elist.next().getTextContent();}if (res.contains("You have logged in!")) {showMessage("您已经登陆！");open();return false;} else if (res.contains("The user does not exist or has not subscribed for this service")) {showMessage("用户名或密码错误！");open();return false;}working = true;return true;}/** * 显示信息 * @param str 信息 */public static void showMessage(final String str) {java.awt.EventQueue.invokeLater(new Runnable() {public void run() {JOptionPane.showMessageDialog(null, str);}});}}?