Java实现仿淘宝滑动验证码研究代码详解

通过下面一张图看下要实现的功能，具体详情如下所示：

现在我就来介绍些软件的其它功能。希望大家有所受益。

模拟人为搜索商品

在刷单的时候，不能直接拿到一个商品网址就进入购买页面吧，得模拟人为搜索。

在这一个过程中有两个难点：

1）商品列表的异步加载 ; 2）翻页并且截图;

在园子里，我就不在关公面前耍大刀了。

直接上关键代码：

i:搜索商品，并且翻页

public bool? searchproduct(taskdetailmodel taskdetaildata)
{
bool? result = null;
bool isindex = true;
bool islist = true;
webbrowsertask.instance.setproperties();
webbrowsertask.instance.cleardocumentcompleted();
webbrowsertask.instance.documentcompleted += (wbsendersearch, wbesearch) =>
{
system.windows.forms.webbrowser currentwb = wbsendersearch as system.windows.forms.webbrowser;
system.windows.forms.htmldocument currentdoc = currentwb.document;
mshtml.htmldocument currentdom = currentdoc.domdocument as mshtml.htmldocument;
string wburl = wbesearch.url.tostring();
if (currentwb.readystate == system.windows.forms.webbrowserreadystate.complete)
{
#region 首页搜索
if (wburl.contains("www.taobao.com"))
{
if (isindex == true)
{
isindex = false;
taskdetaildata.detailremark = string.format(@"输入关键字""{0}""搜索商品……", taskdetaildata.taskname);
func<bool> func = () =>
{
bool asynctag = false;
system.threading.thread.sleep(5000);
asynctag = true;
return asynctag;
};
func.begininvoke((ar) =>
{
bool asyncresult = func.endinvoke(ar);
if (asyncresult)
{
system.windows.forms.htmlelement heee = currentdoc.getelementbyid("j_searchtab");
string classname = heee.getattribute("classname");
system.windows.forms.htmlelement hitem = heee.children[0];
system.windows.forms.htmlelementcollection heclis = hitem.children;
system.windows.forms.htmlelement li1 = heclis[0];
system.windows.forms.htmlelement li2 = heclis[1];
system.windows.forms.htmlelement li3 = heclis[2];
foreach (system.windows.forms.htmlelement li in heclis)
{
string liclass = li.getattribute("classname");
if (liclass.contains("selected"))
{
system.windows.forms.htmlelement q = currentdoc.getelementbyid("q");
system.windows.forms.htmlelement btnsearch = currentdoc.getelementbyid("j_tsearchform").children[0].children[0];
if (q != null && btnsearch != null)
{
q.focus();
q.setattribute("value", taskdetaildata.taskname);
btnsearch.focus();
string savepath = path.combine(userdata.workbenchdirectory, taskdetaildata.taskdetailcode, string.format("搜索提交.jpg", ""));
captureimage.capturewebpagearea(currentdom, savepath);
btnsearch.invokemember("click");
}
}
}
}
},
null);
}
}
#endregion 首页搜索
#region 商品列表
if (wburl.contains("s.taobao.com"))
{
if (islist == true)
{
islist = false;
func<bool> func = () =>
{
bool asynctag = false;
asynctag = true;
return asynctag;
};
func.begininvoke((ar) =>
{
bool asyncresult = func.endinvoke(ar);
if (asyncresult)
{
//解析每页商品
string clickproducturl = turningandparsepage(currentdoc, taskdetaildata);
result = true;
}
},
null);
}
}
#endregion 商品列表
}
}; //documentcompleted结束
system.windows.application.current.dispatcher.invoke(new system.action(() =>
{
webbrowsertask.instance.navigate("https://www.taobao.com/");
}));
for (int i = 0; i < 120; i++)
{
system.threading.thread.sleep(1000);
if (result != null)
{
break;
}
}
return result;
} 

ii:因为每个页面都是异常加载的，选择适当的时机对网页进行截图
截取整个网页：

/*
因为包含了控件，如果在了线程里调用，必须用invoke方法
system.windows.application.current.dispatcher.invoke(new system.action(() =>
{
//htmldoc.window.scrollto(new system.drawing.point(5000, htmldoc.body.scrollrectangle.height));
string savepath = string.format(@"d:\{0}.jpg", guid.newguid().tostring());
captureimage.capturewebpage(webbrowsertask, savepath);
}), system.windows.threading.dispatcherpriority.background);
*/
/// <summary>
/// 截取整个网页
/// </summary>
/// <param name="web"></param>
/// <param name="savepath"></param>
public static void capturewebpage(system.windows.forms.webbrowser web, string savepath)
{
rectangle body = web.document.body.scrollrectangle;
rectangle docrectangle = new rectangle()
{
location = new point(0, 0),
size = new size(body.width, body.height)
};
web.dock = dockstyle.none;
web.width = docrectangle.width;
web.height = docrectangle.height;
rectangle imgrectangle = docrectangle;
using (bitmap bitmap = new bitmap(imgrectangle.width, imgrectangle.height))
{
iviewobject ivo = web.document.domdocument as iviewobject;
using (graphics g = graphics.fromimage(bitmap))
{
intptr hdc = g.gethdc();
ivo.draw(1, -1, intptr.zero, intptr.zero, intptr.zero, hdc, ref imgrectangle, ref docrectangle, intptr.zero, 0);
g.releasehdc(hdc);
}
bitmap.save(savepath, system.drawing.imaging.imageformat.jpeg);
bitmap.dispose();
}
} 

截取网页的某个区域：

/// <summary>
/// 截取网页的一部份
/// </summary>
/// <param name="htmldom"></param>
/// <param name="savepath"></param>
public static void capturewebpagearea(mshtml.htmldocument htmldom, string savepath)
{
string savedir = system.io.path.getdirectoryname(savepath);
if (!system.io.directory.exists(savedir))
{
system.io.directory.createdirectory(savedir);
}
rectangle docrectangle = new rectangle()
{
location = new point(0, 0),
//size = new size(htmldom.body.offsetwidth, htmldom.body.offsetheight)
size = new size((int)system.windows.systemparameters.primaryscreenwidth, (int)system.windows.systemparameters.primaryscreenheight)
};
rectangle imgrectangle = docrectangle;
using (bitmap bitmap = new bitmap(imgrectangle.width, imgrectangle.height))
{
iviewobject ivo = htmldom as iviewobject;
using (graphics g = graphics.fromimage(bitmap))
{
intptr hdc = g.gethdc();
ivo.draw(1, -1, intptr.zero, intptr.zero, intptr.zero, hdc, ref imgrectangle, ref docrectangle, intptr.zero, 0);
g.releasehdc(hdc);
}
bitmap.save(savepath, system.drawing.imaging.imageformat.jpeg);
bitmap.dispose();
}
} 

在这代码里有很多有趣的片段。有心的朋友会发现。