HtmlUnit: A Simple Example: Check Yahoo Email---转载

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package com.examples.htmlunit;

import java.io.IOException;
import java.net.URL;
import java.util.List;

import com.gargoylesoftware.htmlunit.BrowserVersion;
import com.gargoylesoftware.htmlunit.Page;
import com.gargoylesoftware.htmlunit.RefreshHandler;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlAnchor;
import com.gargoylesoftware.htmlunit.html.HtmlForm;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.HtmlTable;
import com.gargoylesoftware.htmlunit.html.HtmlTableRow;

public class YahooMail {

    public static void main(String[] args) throws Exception {

        // Create and initialize WebClient object
        WebClient webClient = new WebClient(BrowserVersion.FIREFOX_2);
        webClient.setThrowExceptionOnScriptError(false);
        webClient.setRefreshHandler(new RefreshHandler() {
            public void handleRefresh(Page page, URL url, int arg) throws IOException {
                System.out.println("handleRefresh");
            }

        });

        // visit Yahoo Mail login page and get the Form object
        HtmlPage page = (HtmlPage) webClient.getPage("https://login.yahoo.com/config/login_verify2?.intl=us&.src=ym");
        HtmlForm form = page.getFormByName("login_form");

        // Enter login and passwd
        form.getInputByName("login").setValueAttribute("@@@@@@@");
        form.getInputByName("passwd").setValueAttribute("@@@@@@@");

        // Click "Sign In" button/link
        page = (HtmlPage) form.getInputByValue("Sign In").click();

        // Click "Inbox" link
        HtmlAnchor anchor = (HtmlAnchor) page.getHtmlElementById("WelcomeInboxFolderLink");
        page = (HtmlPage) anchor.click();

        // Get the table object containing the mails
        HtmlTable dataTable = (HtmlTable) page.getHtmlElementById("datatable");

        // Go through each row and count the row with class=msgnew
        int newMessageCount = 0;
        List rows = (List) dataTable.getHtmlElementsByTagName("tr");
        for (HtmlTableRow row: rows) {
            if (row.getAttribute("class").equals("msgnew")) {
                newMessageCount++;
            }
        }        

        // Print the newMessageCount to screen
        System.out.println("newMessageCount = " + newMessageCount);

        //System.out.println(page.asXml());                        

    }