C++ 通过代码托管的方式调用c#的httpAgilityPack库

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c#的httpAgilityPack是一款优秀的HTML解析库。最重要的是可以通过XPath来解析。可惜我们用C++的只能通过托管代码的方式来调用了。

托管代码设置:

ALT+F7 打开属性页-属性配置-常规-公共语言运行时支持-公共语言运行时支持(clr)

#include<afxwin.h>#include<string> using namespace std;using namespace System;#using <System.Xml.dll>#using "..\Debug\HtmlAgilityPack.dll"using namespace HtmlAgilityPack; #include<list>list<string> _links;using namespace System::Runtime::InteropServices;  //Marshal//System::String转std::stringvoid MarshalString ( String^ s, string& os ) {      const char* chars = (const char*)(Marshal::StringToHGlobalAnsi(s)).ToPointer();   os = chars;   Marshal::FreeHGlobal(IntPtr((void*)chars));}inline void ParseLink(HtmlNode^ node, String^ name){HtmlAttribute ^att = node->Attributes[name];if(att == nullptr)return;String^ str = node->Name;if ((name == "href") && (node->Name != "link"))return;string strValue ;MarshalString(att->Value,strValue);_links.push_back(strValue);}void CTESTDlg::OnBnClickedOk(){    string url =  "http://www.sina.com";;         String^ str2 = gcnew String(url.c_str());  HtmlWeb ^hw = gcnew HtmlWeb(); HtmlDocument ^doc = hw->Load(str2);doc->Save("mshome.htm");HtmlNodeCollection ^atts = doc->DocumentNode->SelectNodes("//*[@background or @lowsrc or @src or @href]");for(int i = 0;i < atts->Count;i ++){ParseLink(atts[i], "background");ParseLink(atts[i], "href");ParseLink(atts[i], "src");ParseLink(atts[i], "lowsrc");}string strurl;list<string>::iterator v;for(v = _links.begin();v != _links.end();++v){strurl += (*v);strurl += "  ";}m_edit.SetWindowTextA(strurl.c_str());CString str = ":";int a =1;}

测试源代码地址

http://download.csdn.net/detail/witch_soya/4978532