IE Explore 11 < c++ ATL COM Browser Helper Object (Add-on) 替换DOM中的文本
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【中文标题】IE Explore 11 < c++ ATL COM Browser Helper Object (Add-on) 替换DOM中的文本【英文标题】：IE Explore 11 < c++ ATL COM Browser Helper Object (Add-on) to replace text in the DOM 【发布时间】：2017-05-04 00:42:57 【问题描述】：我正在尝试使用 A BHO 从 IE 11 的 Dom 中删除一行 javascript。 （Internet Explorer 插件）
这是非常糟糕的记录，很难看到最好的前进方式。
我已经设法在 C++ ATL/COM 中编写了 BHO，并且工作正常，但我无法找到从正文中实际删除/替换文本然后将更改注入页面的最佳方法。
老实说，我没有时间阅读这本 1000 页过时的 COM 书 :-)。
这是我目前的 OnDocumentComplete 事件：
void STDMETHODCALLTYPE CMyFooBHO::OnDocumentComplete(IDispatch *pDisp, VARIANT *pvarURL)
BSTR bstrURL = pvarURL->bstrVal;
if (_wcsicmp(bstrURL, ABOUT_BLANK) == 0)
return;
HRESULT hr = S_OK;
// Query for the IWebBrowser2 interface.
CComQIPtr<IWebBrowser2> spTempWebBrowser = pDisp;
// Is this event associated with the top-level browser?
if (spTempWebBrowser && m_spWebBrowser && m_spWebBrowser.IsEqualObject(spTempWebBrowser))
// Get the current document object from browser.
CComPtr<IDispatch> spDispDoc;
hr = m_spWebBrowser->get_Document(&spDispDoc);
if (SUCCEEDED(hr))
// Verify that what we get is a pointer to a IhtmlDocument2 interface.
// To be sure, let's query for the IHTMLDocument2 interface (through smart pointers).
CComQIPtr<IHTMLDocument2, &IID_IHTMLDocument2> spHTML;
spHTML = spDispDoc;
// Extract the source of the document if its HTML.
if (spHTML)
// Get the BODY object.
CComPtr<IHTMLElement> m_pBody;
hr = spHTML->get_body(&m_pBody);
if (SUCCEEDED(hr))
// Get the HTML text.
BSTR bstrHTMLText;
hr = m_pBody->get_outerHTML(&bstrHTMLText);
if (SUCCEEDED(hr))
// bstrHTMLText now contains the <body> ...whatever... </body> of the html page.
// ******** HERE ********
// What I want to do here is replace some text contained in bstrHTMLText
// i.e. Replace "ABC" with "DEF" if it exists in bstrHTMLText.
// Then replace the body of the original page with the edited bstrHTMLText.
// My actual goal is to remove one line of javascript.
欢迎对现有代码的任何改进发表评论。
【问题讨论】：
您必须获得更深的IHTMLElement，其中包含您想要更改的内容。请将 Dom Explorer 从“F12”开发工具中捕获的 HTML 节点添加到您的问题中。
该元素将是一个
你是说锚标签？
抱歉在我输入完之前就发布了 :-)
您所说的虽然听起来像是应用于一小段源代码的相同问题。
【参考方案1】：
这不遵循正常（应该这样做）的方式。
如果没有更好的答案，那么我猜它是最好的答案，我会标记它。
我很想听听任何 cmets 或更新以改进，或者向我展示一个更好的工作示例。
这适用于 IE 11，并在 Visual Studio 2015 中使用 C++ ATL / COM 编译。
我已经尝试迭代 DOM 并更改它以及其他所有记录非常糟糕的变体。
阅读 html 似乎从来没有问题，即 get_innerText get_innerHTML get_outerHTML in 它的各种形式，但 put_*** 似乎从来没有大部分工作。为什么？似乎没有人能说或给我 一个可行的例子。
我确实发现 get_body > get_innerHTML > put_innerHTML 似乎确实有效。
因此，我只是简单地编写了一个函数来在 CComBSTR 中搜索和替换。
这对我有用，但我想你可以将返回的内容作为正文内部 HTML 并运行其他一些 如果您的要求不同，则其上的 DOM 操作代码（不是内置的东西）。
这种做事方式的主要优点是不依赖 c**p 未记录的代码，这似乎可以工作 在 MS 想要的时候用某种神秘的方法。
这是测试 html 页面。我试图删除“警报（“你好”）” 当页面完成加载时执行。
<!doctype html>
<head>
<title>Site</title>
<meta http-equiv="cache-control" content="max-age=0" />
<meta http-equiv="cache-control" content="no-cache" />
<meta http-equiv="expires" content="0" />
<meta http-equiv="expires" content="Tue, 01 Jan 1980 1:00:00 GMT" />
<meta http-equiv="pragma" content="no-cache" />
</head>
<body>
<div>If a dialog with hello appears then the BHO failed</div>
<script type="text/javascript">
window.onload = function()
window.document.body.onload = foo;
;
function foo()
alert("hello");
</script>
</body>
<html>
// FooBHO.h : Declaration of the CFooBHO
#pragma once
#include "resource.h" // main symbols
#include "FooIEAddOn_i.h"
#include <shlguid.h> // IID_IWebBrowser2, DIID_DWebBrowserEvents2, etc.
#include <exdispid.h> // DISPID_DOCUMENTCOMPLETE, etc.
#include <mshtml.h> // DOM interfaces
#include <string>
#if defined(_WIN32_WCE) && !defined(_CE_DCOM) && !defined(_CE_ALLOW_SINGLE_THREADED_OBJECTS_IN_MTA)
#error "Single-threaded COM objects are not properly supported on Windows CE platform, such as the Windows Mobile platforms that do not include full DCOM support. Define _CE_ALLOW_SINGLE_THREADED_OBJECTS_IN_MTA to force ATL to support creating single-thread COM object's and allow use of it's single-threaded COM object implementations. The threading model in your rgs file was set to 'Free' as that is the only threading model supported in non DCOM Windows CE platforms."
#endif
#define DISPID_DOCUMENTRELOAD 282
using namespace ATL;
using namespace std;
// CFooBHO
class ATL_NO_VTABLE CFooBHO : public CComObjectRootEx<CComSingleThreadModel>,
public CComCoClass<CFooBHO, &CLSID_FooBHO>,
public IObjectWithSiteImpl<CFooBHO>,
public IDispatchImpl<IFooBHO, &IID_IFooBHO, &LIBID_FooIEAddOnLib, /*wMajor =*/ 1, /*wMinor =*/ 0>,
public IDispEventImpl<1, CFooBHO, &DIID_DWebBrowserEvents2, &LIBID_SHDocVw, 1, 1>
public:
CFooBHO()
// The STDMETHOD macro is an ATL convention that marks the method as virtual and ensures that it has the right calling convention for the public
// COM interface.It helps to demarcate COM interfaces from other public methods that may exist on the class.The STDMETHODIMP macro is likewise used
// when implementing the member method.
STDMETHOD(SetSite)(IUnknown *pUnkSite);
DECLARE_REGISTRY_RESOURCEID(IDR_FooBHO)
DECLARE_NOT_AGGREGATABLE(CFooBHO)
BEGIN_COM_MAP(CFooBHO)
COM_INTERFACE_ENTRY(IFooBHO)
COM_INTERFACE_ENTRY(IDispatch)
COM_INTERFACE_ENTRY(IObjectWithSite)
END_COM_MAP()
DECLARE_PROTECT_FINAL_CONSTRUCT()
BEGIN_SINK_MAP(CFooBHO)
SINK_ENTRY_EX(1, DIID_DWebBrowserEvents2, DISPID_DOCUMENTCOMPLETE, OnDocumentComplete)
END_SINK_MAP()
void STDMETHODCALLTYPE OnDocumentComplete(IDispatch *pDisp, VARIANT *pvarURL);
HRESULT FinalConstruct()
return S_OK;
void FinalRelease()
private:
CComPtr<IWebBrowser2> m_spWebBrowser;
BOOL m_fAdvised;
static const wchar_t* ABOUT_BLANK;
void CFooBHO::ReplaceInCComBSTR(CComBSTR &strInput, const wstring &strOld, const wstring &strNew);
;
OBJECT_ENTRY_AUTO(__uuidof(FooBHO), CFooBHO)
// FooBHO.cpp : Implementation of CFooBHO
#include "stdafx.h"
#include "FooBHO.h"
#include "Strsafe.h"
const wchar_t* CFooBHO::ABOUT_BLANK = L"about:blank";
// The SetSite() method is where the BHO is initialized and where you would perform all the tasks that happen only
// once. When you navigate to a URL with Internet Explorer, you should wait for a couple of events to make sure the
// required document has been completely downloaded and then initialized. Only at this point can you safely access
// its content through the exposed object model, if any.
STDMETHODIMP CFooBHO::SetSite(IUnknown* pUnkSite)
if (pUnkSite != NULL)
// Cache the pointer to IWebBrowser2.
HRESULT hr = pUnkSite->QueryInterface(IID_IWebBrowser2, (void **)&m_spWebBrowser);
if (SUCCEEDED(hr))
// Register to sink events from DWebBrowserEvents2.
hr = DispEventAdvise(m_spWebBrowser);
if (SUCCEEDED(hr))
m_fAdvised = TRUE;
else
// Unregister event sink.
if (m_fAdvised)
DispEventUnadvise(m_spWebBrowser);
m_fAdvised = FALSE;
// Release cached pointers and other resources here.
m_spWebBrowser.Release();
// Call base class implementation.
return IObjectWithSiteImpl<CFooBHO>::SetSite(pUnkSite);
void STDMETHODCALLTYPE CFooBHO::OnDocumentComplete(IDispatch *pDisp, VARIANT *pvarURL)
BSTR bstrURL = pvarURL->bstrVal;
// Test for any specific URL here.
// Currently we are ignoring ABOUT:BLANK but allowing everything else.
if (_wcsicmp(bstrURL, ABOUT_BLANK) == 0)
return;
HRESULT hr = S_OK;
// Query for the IWebBrowser2 interface.
CComQIPtr<IWebBrowser2> spTempWebBrowser = pDisp;
// Is this event associated with the top-level browser?
if (spTempWebBrowser && m_spWebBrowser && m_spWebBrowser.IsEqualObject(spTempWebBrowser))
// Get the current document object from browser.
CComPtr<IDispatch> spDispDoc;
if (SUCCEEDED(m_spWebBrowser->get_Document(&spDispDoc)))
// Verify that what we get is a pointer to a IHTMLDocument2 interface.
// To be sure, let's query for the IHTMLDocument2 interface (through smart pointers).
CComQIPtr<IHTMLDocument2, &IID_IHTMLDocument2> spHTMLDocument2 = spDispDoc;
// Extract the source of the document if its HTML.
if (spHTMLDocument2)
// Get the BODY object.
CComPtr<IHTMLElement> spBody;
if (SUCCEEDED(spHTMLDocument2->get_body(&spBody)))
// Get the Body HTML text.
CComBSTR bstrBodyHTMLText;
if (SUCCEEDED(spBody->get_innerHTML(&bstrBodyHTMLText)))
ReplaceInCComBSTR(bstrBodyHTMLText, L"alert(\"hello\");", L"");
spBody->put_innerHTML(bstrBodyHTMLText);
void CFooBHO::ReplaceInCComBSTR(CComBSTR &bstrInput, const wstring &strOld, const wstring &strNew)
wstring strOutput(bstrInput);
size_t iPos = 0;
size_t iLpos = 0;
while ((iPos = strOutput.find(strOld, iLpos)) != string::npos)
strOutput.replace(iPos, strOld.length(), strNew);
iLpos = iPos + 1;
::SysFreeString(bstrInput.m_str);
// Find and replace is complete; now update the CComBSTR.
bstrInput.m_str = ::SysAllocString(strOutput.c_str());
【讨论】：
【参考方案2】：这是另一种方式，在 JavaScript 中。
var oCollection = document.getElementsByTagName("script");
var nColCount = oCollection.length;
var nIndex;
for ( nIndex = 0; nIndex < nColCount; ++nIndex )
var oScript = oCollection[ nIndex ];
var strScriptText = oScript.innerHTML;
if ( strScriptText.indexOf( "alert(\"hello\");" ) != -1 )
var strNewText = strScriptText.replace( "alert(\"hello\");", "" );
var oNewScript = document.createElement("script");
oNewScript.type = "text\/javascript";
oNewScript.text = strNewText;
document.getElementsByTagName("head")[0].appendChild(oNewScript);
console.log ("DONE!");
你可以用IHTMLWindow2::execScript执行那个JS
您必须将上述代码存储在CComBSTR 中。小心逃跑。
例子：
CComBSTR bstrScript = L"var strWithOneDoubleQuote = \"\\\"\";"; // -:)
【讨论】：
我试试看。据我所知，新的 API 似乎只适用于 EDGE+。ITHMLWindow2::execScript 在 IE11 中运行良好。如果您知道如何在 JS 中执行此操作，则可以使用 BHO 来执行您的 JS 代码。
我有“大多数情况下都能正常工作，但我正在努力寻找改变 dom 的正确方法。
你有没有上面的代码示例。我可以迭代 dom，获取所有脚本元素的集合，测试每个元素中的内容，但无论我尝试什么，我都无法更改任何内容。示例代码codeshare.io/adBjD2
好的，这周末会有所帮助。敬请期待。以上是关于IE Explore 11 < c++ ATL COM Browser Helper Object (Add-on) 替换DOM中的文本的主要内容，如果未能解决你的问题，请参考以下文章
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