要爬取一个网站遇到了极验的验证码，这周都在想着怎么破解这个，网上搜了好多知乎上看到有人问了这问题https://www.zhihu.com/question/28833985，我按照这思路去大概实现了一下。

　　1.使用htmlunit（这种方式我没成功，模拟鼠标拖拽后轨迹没生成，可以跳过）
　　我用的是java，我首先先想到了用直接用htmlunit，我做了点初始化
private void initWebClient() {
if (webClient != null) {
return;
}
webClient = new WebClient(BrowserVersion.FIREFOX_24);
webClient.getOptions().setProxyConfig(new ProxyConfig("127.0.0.1"，8888));
webClient.getOptions().setActiveXNative(true);
webClient.getOptions().setUseInsecureSSL(true); // 配置证书
webClient.getOptions().setJavaScriptEnabled(true);
webClient.getOptions().setCssEnabled(true);
webClient.setCssErrorHandler(new SilentCssErrorHandler());
webClient.getOptions().setThrowExceptionOnScriptError(false);
webClient.getOptions().setThrowExceptionOnFailingStatusCode(false);
CookieManager cookieManager = new CookieManager();
List<org.apache.http.cookie.Cookie> httpCookies = client.getCookies();//其方式获取的cookie
for (org.apache.http.cookie.Cookie cookie : httpCookies) {
cookieManager.addCookie(new com.gargoylesoftware.htmlunit.util.Cookie(cookie));
}
webClient.setCookieManager(cookieManager);
}
　　初始化代理，cookie..然后能正常调用了
　　HtmlPage page = webClient.getPage("http://www.qixin.com/login");//企信宝
　　gePageInfor(page);
　　下面是我获取图片，还原图片并且模拟拖拽，（这里我觉得是有些问题的，可能是拖拽我模拟的不对导致触发的js并没有生成正确的轨迹，还请大家帮忙看看哪里错了）
private void gePageInfor(HtmlPage page) {
String[] img_slice={"div"， "class"， "gt_cut_fullbg_slice"};
String[] img_bg_slice={"div"， "class"， "gt_cut_bg_slice"};
HtmlDivision div = (HtmlDivision) page.getElementById("captcha");
int deCAPTCHA = 0;
try {
byte[] img_slice_binary = client.get(getImgUrl(img_slice， div， true)).getBinary();//获取图片byte
byte[] img_bg_slice_binary = client.get(getImgUrl(img_bg_slice， div， false)).getBinary();
//获取还原后的图片
BufferedImage geetestImg = ImgTest.getGeetestImg(img_slice_binary， ImgTest.imgArray);
BufferedImage geetestImg2 = ImgTest.getGeetestImg(img_bg_slice_binary， ImgTest.imgArray);
//获得图片移动位置（目前还有问题，需改用第三方图片识别）
deCAPTCHA =ImgTest.deCAPTCHA(geetestImg，geetestImg2);
System.out.println(deCAPTCHA);
} catch (IOException | FetchException e) {
e.printStackTrace();
}
HtmlDivision div_slider_knob = get_div_slider_knob(page，"gt_slider_knob gt_show");//获取要移动div
HtmlPage mouseOver = (HtmlPage) div_slider_knob.mouseOver();
HtmlPage mouseDownPage = (HtmlPage)div_slider_knob.mouseDown();
div_slider_knob = get_div_slider_knob(mouseDownPage，"gt_slider_knob gt_show moving");
mouseMoveX(deCAPTCHA， div_slider_knob， mouseDownPage);
HtmlPage newPage =(HtmlPage)div_slider_knob.mouseOver();
//        newPage =(HtmlPage)div_slider_knob.mouseDown();
System.out.println(newPage.asXml());
div = (HtmlDivision)newPage.getElementById("captcha");
HtmlElement htmlElement = div.getElementsByAttribute("div"， "class"， "gt_slice gt_show moving").get(0);
System.out.println(htmlElement);
newPage =(HtmlPage)div_slider_knob.mouseUp();//触发js，轨迹没有生成
System.out.println("---------------");
System.out.println(newPage.asXml());
if (newPage.getElementById("captcha")!=null) {//错误重试
//gePageInfor(newPage);
}
}
private void mouseMoveX(int deCAPTCHA， HtmlDivision div_slider_knob， HtmlPage mouseDown) {
MouseEvent mouseEvent = new MouseEvent(div_slider_knob， MouseEvent.TYPE_MOUSE_MOVE， false， false， false， MouseEvent.BUTTON_LEFT);
mouseEvent.setClientX( mouseEvent.getClientX()+((deCAPTCHA!=0)?deCAPTCHA:99));    //移动x坐标
ScriptResult scriptResult = mouseDown.getDocumentElement().fireEvent(mouseEvent);
}
private HtmlDivision get_div_slider_knob(HtmlPage page，String classString) {
return (HtmlDivision)(((HtmlDivision) page.getElementById("captcha")).getElementsByAttribute("div"， "class"， classString).get(0));
}
private String getImgUrl(String[] img_slice， HtmlDivision div， boolean isNeedCheckPostion) {
String url ="";
int[] postion = new int[2];
boolean empty = div.getElementsByAttribute(img_slice[0]，img_slice[1]，img_slice[2]).isEmpty();
if (div.hasChildNodes() && !empty) {
List<HtmlElement> elementsByAttribute = div.getElementsByAttribute(img_slice[0]，img_slice[1]，img_slice[2]);
for(int i = 0;i<elementsByAttribute.size();i++){
HtmlDivision div_img = (HtmlDivision)elementsByAttribute.get(i);
String style = div_img.getAttribute("style");
String[] imge_url_position = style.split(";");
if(StringUtils.isBlank(url)){//确认url
url = StringUtils.replacePattern(imge_url_position[0]， ".*\("， "").replace(")"， "");
}
if (isNeedCheckPostion) {//确认图片切割postion，两张图切割方式一样  background-position: -157px -58px
//                    String[] positionS = StringUtils.split(StringUtils.remove(imge_url_position[1]， "px").replace("-"， "").replaceAll(".*:"， "")， null);
String[] positionS = StringUtils.split(StringUtils.removePattern(imge_url_position[1]， "[^\d+ \s]")，null);
postion[0] = Integer.parseInt(positionS[0]);
postion[1] = Integer.parseInt(positionS[1]);
int[] is = ImgTest.imgArray[i];
if (is[0]!=postion[0]||is[1]!=postion[1]) {
logger.debug("更新分割postion");
ImgTest.imgArray[i] = postion;
}
System.out.println(ImgTest.imgArray);
isNeedCheckPostion= false;
}
}
}
return url;
}