<dependencies> <!-- https://mvnrepository.com/artifact/net.sourceforge.htmlunit/htmlunit --> <dependency> <groupId>net.sourceforge.htmlunit</groupId> <artifactId>htmlunit</artifactId> <version>2.18</version> </dependency> <!-- https://mvnrepository.com/artifact/org.jsoup/jsoup --> <dependency> <groupId>org.jsoup</groupId> <artifactId>jsoup</artifactId> <version>1.9.2</version> </dependency> </dependencies>

package com.test;import java.io.IOException;import java.net.MalformedURLException;import java.util.HashMap;import java.util.Map;import java.util.Set;import com.gargoylesoftware.htmlunit.BrowserVersion;import com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException;import com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController;import com.gargoylesoftware.htmlunit.SilentCssErrorHandler;import com.gargoylesoftware.htmlunit.WebClient;import com.gargoylesoftware.htmlunit.html.HtmlButtonInput;import com.gargoylesoftware.htmlunit.html.HtmlForm;import com.gargoylesoftware.htmlunit.html.HtmlPage;import com.gargoylesoftware.htmlunit.html.HtmlPasswordInput;import com.gargoylesoftware.htmlunit.html.HtmlTextInput;import com.gargoylesoftware.htmlunit.util.Cookie;public class SimulateLogin{ //訪問的目標網址（CSDN） private static String TARGET_URL = "https://passport.csdn.net/account/login?from=http://www.csdn.net"; public static void main(String[] args) throws FailingHttpStatusCodeException, MalformedURLException, IOException {  // 模擬一個瀏覽器  WebClient webClient = new WebClient(BrowserVersion.CHROME);  // 設置webClient的相關參數  webClient.setCssErrorHandler(new SilentCssErrorHandler());   //設置ajax  webClient.setAjaxController(new NicelyResynchronizingAjaxController());  //設置支持js  webClient.getOptions().setJavaScriptEnabled(true);  //CSS渲染禁止  webClient.getOptions().setCssEnabled(false);  //超時時間  webClient.getOptions().setTimeout(50000);  //設置js拋出異常:false  webClient.getOptions().setThrowExceptionOnScriptError(false);  //允許重定向  webClient.getOptions().setRedirectEnabled(true);   //允許cookie  webClient.getCookieManager().setCookiesEnabled(true);   // 模擬瀏覽器打開一個目標網址  HtmlPage page = webClient.getPage(TARGET_URL);  /**等待js加載完全，CSDN這點 特別坑，js加載時間超長！！！！！！！ 后人切記不要用CSDN模擬登陸！！！！！！！**/  webClient.waitForBackgroundJavaScript(10000*3);  // 根據form的名字獲取頁面表單，也可以通過索引來獲取：page.getForms().get(0)    HtmlForm form = (HtmlForm) page.getElementById("fm1");     HtmlTextInput username = (HtmlTextInput) form.getInputByName("username");   HtmlPasswordInput password = (HtmlPasswordInput) form.getInputByName("password");   username.setValueAttribute("********"); //用戶名  password.setValueAttribute("********"); //密碼  HtmlButtonInput button = (HtmlButtonInput) page.getByXPath("//input[contains(@class, 'logging')]").get(0);//  ScriptResult result = page.executeJavaScript("javascript:document.getElementsByClassName('logging')[0].click()");//  HtmlPage retPage = (HtmlPage) result.getNewPage();  HtmlPage retPage = button.click();  // 等待JS驅動dom完成獲得還原后的網頁   webClient.waitForBackgroundJavaScript(1000);   //輸出跳轉網頁的地址  System.out.println(retPage.getUrl().toString());   //輸出跳轉網頁的內容  System.out.println(retPage.asXml());  //獲取cookie   Set<Cookie> cookies = webClient.getCookieManager().getCookies();  Map<String, String> responseCookies = new HashMap<String, String>();   for (Cookie c : cookies) {    responseCookies.put(c.getName(), c.getValue());    System.out.print(c.getName()+":"+c.getValue());   }   webClient.close();  System.out.println("Success!"); }}

  //設置日志級別，原頁面js異常不打印  LogFactory.getFactory().setAttribute("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.NoOpLog");     java.util.logging.Logger.getLogger("com.gargoylesoftware.htmlunit")    .setLevel(Level.OFF);    java.util.logging.Logger.getLogger("org.apache.commons.httpclient")    .setLevel(Level.OFF);