利用XML文件的一个写日志的类！！！！！

对于程序执行期间的错误跟踪！相信大家都有自己的一套办法！！！但都是利用文件文件，我这次利用的是XML&XSL，可产生报表格式的日志,轻松生成报表！！！

我参考了Emilio Guijarro Cameros的CXMLProfile写XML配置文件的思想！！！利用XML 接口IXMLDOMDocument 、IXMLDOMNode 、IXMLDOMElement和 MFC相结合，写成了一个CXMLLogfile类，只暴露了两个公共方法

void Log(LPCTSTR lpszFilName,LPCTSTR s,...);

bool ClearAll()

Log是添加一条日志，ClearAll是清除所有日志!!!当大家需要查看日值时，只需要打开相应的XML文件Log.XML就可以看到一个日志表格了，为此我专门写了一个XSL样式文件（XML样式XSL文件必须在XML文件同一目录下）！

XSL样式文件代码：

<?xml version="1.0" encoding="GB2312"?>

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:template match="/">

<html>

<head>

</head>

<body>

<h1><xsl:value-of select="LogFile/AppName" /> 运行日志文件</h1>

<tr>

<tr>

<td bgcolor="#ffffff"><b>具体位置信息</b></td>

</tr>

<xsl:for-each select="LogFile/LogItem">

</tr>

</xsl:for-each>

</table>

</td>

</tr>

</table>

<font style="font-size:5.0mm;"><br/>Log.xsl by force eagle <<a href="force_eagle@163.net>mailto:force_eagle@163.net">force_eagle@163.net</a>></font>

</body>

</html>

</xsl:template>

</xsl:stylesheet>

以下是一日志表格图：

以下是源代码，需要IE5.5以上支持！！！如果编译错误！请下载微软的最新XML SDK！！！！

// XMLLogfile.h: interface for the CXMLLogfile class.

//////////////////////////////////////////////////////////////////////

#if !defined(AFX_XMLLOGFILE_H__EA8ACC84_7139_49F6_9B8A_F69D9CF5C385__INCLUDED_)

#define AFX_XMLLOGFILE_H__EA8ACC84_7139_49F6_9B8A_F69D9CF5C385__INCLUDED_

#if _MSC_VER > 1000

#pragma once

#endif // _MSC_VER > 1000

#include <sys/timeb.h>

#include <time.h>

#include <atlbase.h>

#include <msxml.h>

#include <shlobj.h>

//Author : By force eagle

//Date time : 2003-5-26 17:08

//reference :

// CXMLProfile By Emilio Guijarro Cameros

#pragma comment(lib,"msxml2.lib")

class CXMLLogfile : public CObject

{

CString m_strFileName;

IXMLDOMDocument *m_pXMLDoc;

IXMLDOMNode * GetChildNode(LPCTSTR lpszParent, LPCTSTR lpszChild,BOOL bCreate = TRUE);

IXMLDOMNode * GetFirstLevelNode(LPCTSTR lpszNodeName,BOOL bCreate = TRUE);

// UNIX timestamp: seconds from 1970-01-01 00:00:00 (UTC)

inline double TimeStamp(void)

{

_timeb ts;

_ftime( &ts );

return (int)ts.time + (ts.millitm/1000.0);

};

protected:

void AppendNode(IXMLDOMNode * pXMLItem, LPCTSTR lpszNodeName, LPCTSTR lpszValue);

void AppendItem(LPCTSTR lpszFileName,LPCTSTR lpszComment);

void Flush();

bool CreateLogFile(LPCTSTR lpszLogFilName);

void DumpComError(_com_error &e);

void Init();

public:

CXMLLogfile(LPCTSTR lpszFileName = NULL);

virtual ~CXMLLogfile();

void Log(LPCTSTR lpszFilName,LPCTSTR s,...);

bool ClearAll();

};

#endif // !defined(AFX_XMLLOGFILE_H__EA8ACC84_7139_49F6_9B8A_F69D9CF5C385__INCLUDED_)

// XMLLogfile.cpp: implementation of the CXMLLogfile class.

//////////////////////////////////////////////////////////////////////

#include "stdafx.h"

#include "XMLLogfile.h"

#ifdef _DEBUG

#undef THIS_FILE

static char THIS_FILE[]=__FILE__;

#define new DEBUG_NEW

#endif

//////////////////////////////////////////////////////////////////////

// Construction/Destruction

//////////////////////////////////////////////////////////////////////

static TCHAR *szLogOrig= {_T("<?xml version=\"1.0\" encoding=\"GB2312\"?>\n"

"<?xml-stylesheet href=\"Log.xsl\" type=\"text/xsl\"?>\n"

"<LogFile>\n<AppName>XXXX</AppName>\n<Timestamp>1053925276.381</Timestamp>\n"

"<Date>2003-05-26</Date>\n<Time>13:01:16.861</Time>\n</LogFile>\n")};

//*/

static WCHAR *wszLogOrig = {L"<?xml version=\"1.0\" encoding=\"GB2312\"?>\n<?xml-stylesheet href=\"Log.xsl\" type=\"text/xsl\"?>\n<LogFile>\n<AppName>XXXX</AppName>\n<Timestamp>1053925276.381</Timestamp>\n<Date>2003-05-26</Date>\n<Time>13:01:16.861</Time>\n</LogFile>\n"};

CXMLLogfile::CXMLLogfile(LPCTSTR lpszFileName)

{

VARIANT_BOOL bResult;

IXMLDOMElement *pRootNode;

HRESULT hr;

if (NULL == lpszFileName)

{

CString strHlpPath ,strAppName;

strHlpPath = AfxGetApp()->m_pszHelpFilePath;

strAppName = AfxGetAppName();

strHlpPath = strHlpPath.Left(strHlpPath.GetLength() - 4

- strAppName.GetLength());

m_strFileName = strHlpPath + _T("LOG.XML");

}

else

{

m_strFileName = lpszFileName;

}

hr = CoInitialize(NULL);

LoadLog:

if(SUCCEEDED(hr))

{

hr = CoCreateInstance(CLSID_DOMDocument, NULL, CLSCTX_INPROC_SERVER,

IID_IXMLDOMDocument, (void**)&m_pXMLDoc);

if(SUCCEEDED(hr))

{

m_pXMLDoc->load(COleVariant(m_strFileName), &bResult);

}

//取得根节点

m_pXMLDoc->get_documentElement(&pRootNode);

if(pRootNode == NULL) //无根节点

{

m_pXMLDoc->Release();

m_pXMLDoc = NULL;

//重新创建XML日值文件

CreateLogFile(m_strFileName);

goto LoadLog; //重新载入

}

else

{

Init();

}

CXMLLogfile::~CXMLLogfile()

{

m_pXMLDoc->save(COleVariant(m_strFileName));

m_pXMLDoc->Release();

}

* 函数名称: Init()

* 说明: 初始化XML日志文件的工程信息

* 参数:

* 无

* 返回: 无

void CXMLLogfile::Init()

{

IXMLDOMNode *pAppNameNode, *pTimestamp, *pDate, *pTime;;

TCHAR *szTemp = new TCHAR[MAX_PATH];

HRESULT hr ;

CTime timeCur ;

timeCur = CTime::GetCurrentTime();

CString strDate, strTime;

strDate = timeCur.Format(_T("%Y-%m-%d"));

strTime = timeCur.Format(_T("%X"));

//更改工程名称

pAppNameNode = GetFirstLevelNode(_T("AppName"));

hr = pAppNameNode->put_text(CComBSTR(AfxGetAppName()));

pAppNameNode->Release();

//*

//时间戳

ZeroMemory(szTemp,MAX_PATH);

double timestamp = TimeStamp();

_stprintf(szTemp,_T("%.3f"),timestamp);

pTimestamp = GetFirstLevelNode(_T("Timestamp"));

hr = pTimestamp->put_text(CComBSTR(szTemp));

pTimestamp->Release();

//*/

//日期

pDate = GetFirstLevelNode(_T("Date"));

hr = pDate->put_text(CComBSTR(strDate));

pDate->Release();

//时间

pTime = GetFirstLevelNode(_T("Time"));

hr = pTime->put_text(CComBSTR(strTime));

pTime->Release();

delete szTemp;

Flush();

}

* 函数名称: DumpComError(_com_error &e)

* 说明: 输出COM错误信息

* 参数:

* IN _com_error &e COM错误信息对象

* 返回: 无

void CXMLLogfile::DumpComError(_com_error &e)

{

_bstr_t bstrSource(e.Source());

_bstr_t bstrDescription(e.Description());

TRACE("Error\n");

TRACE("\tCode = %08lx\n", e.Error());

TRACE("\tCode meaning = %s\n", e.ErrorMessage());

TRACE("\tSource = %s\n", (LPCSTR) bstrSource);

TRACE("\tDescription = %s\n", (LPCSTR) bstrDescription);

}

* 函数名称: CreateLogFile(LPCTSTR lpszLogFilName)

* 说明: 创建原始的XML日志文件

* 参数:

* IN LPCTSTR lpszLogFileName 文件名称

* 返回: true 成功

bool CXMLLogfile::CreateLogFile(LPCTSTR lpszLogFilName)

{

IXMLDOMDocument *pXMLDoc = NULL;

BSTR bstr = NULL;

VARIANT_BOOL status;

HRESULT hr;

try

{

hr = CoCreateInstance(CLSID_DOMDocument, NULL, CLSCTX_INPROC_SERVER,

IID_IXMLDOMDocument, (void**)&pXMLDoc);

if (FAILED(hr))

_com_issue_error(hr);

bstr = ::SysAllocString(wszLogOrig);

ASSERT(NULL != bstr);

hr = pXMLDoc->loadXML(bstr,&status);

::SysFreeString(bstr);

if (FAILED(hr))

_com_issue_error(hr);

if(status != VARIANT_TRUE)

{

return false;

}

hr = pXMLDoc->save(COleVariant(lpszLogFilName));

if (FAILED(hr))

_com_issue_error(hr);

pXMLDoc->Release();

}

catch(_com_error &e)

{

DumpComError(e);

return false;

}

return true;

}

* 函数名称: GetFirstLevelNode(LPCTSTR lpszNodeName)

* 说明: 根据名称查找第一层子节点指针,没有则判断是否创建

* 参数:

* IN LPCTSTR lpszNodeName 节点名称

* IN BOOL bCreate 是否创建

* 返回: IXMLDOMNode * 节点指针

IXMLDOMNode * CXMLLogfile::GetFirstLevelNode(LPCTSTR lpszNodeName,BOOL bCreate)

{

IXMLDOMElement *pRootNode = NULL, *element = NULL;

IXMLDOMNode *pLogItem = NULL, *pResultNode = NULL;

CComBSTR szName;

bool bSecFound = false, bEntryFound = false;

// wchar_t *szTemp = new wchar_t[255];

m_pXMLDoc->get_documentElement(&pRootNode);

for(pRootNode->get_firstChild(&pLogItem); pLogItem != NULL; pLogItem->get_nextSibling(&pLogItem))

{

pLogItem->get_baseName(&szName);

if(szName == CComBSTR(lpszNodeName))

{

pResultNode = pLogItem;

break;

}

if(pLogItem == NULL && bCreate)

{

m_pXMLDoc->createElement(CComBSTR(lpszNodeName), &element);

pRootNode->appendChild(element, &pLogItem);

element->Release();

pResultNode = pLogItem;

}

pRootNode->Release();

return pResultNode;

}

* 函数名称: GetChildNode(LPCTSTR lpszParent, LPCTSTR lpszChild)

* 说明: 查找父节点下的某一子节点指针,没有则判断是否创建创建

* 参数:

* IN LPCTSTR lpszParent 父节点名称

* IN LPCTSTR lpszChild 子节点名称

* IN BOOL bCreate 是否创建

* 返回: IXMLDOMNode * 子节点指针

IXMLDOMNode * CXMLLogfile::GetChildNode(LPCTSTR lpszParent, LPCTSTR lpszChild,BOOL bCreate)

{

IXMLDOMElement *pRootNode= NULL, *element= NULL;

IXMLDOMNode *pLogItem= NULL, *pLogData= NULL, *pResultNode= NULL;

CComBSTR szName;

m_pXMLDoc->get_documentElement(&pRootNode);

for(pRootNode->get_firstChild(&pLogItem); pLogItem != NULL; pLogItem->get_nextSibling(&pLogItem))

{

pLogItem->get_baseName(&szName);

if(szName == CComBSTR(lpszParent))

{

for(pLogItem->get_firstChild(&pLogData); pLogData != NULL; pLogData->get_nextSibling(&pLogData))

{

pLogData->get_baseName(&szName);

if(szName == CComBSTR(lpszChild))

{

pResultNode = pLogData;

break;

}

if(pLogData == NULL && bCreate)

{

m_pXMLDoc->createElement(CComBSTR(lpszChild), &element);

pLogItem->appendChild(element, &pLogData);

element->Release();

pResultNode = pLogData;

}

pLogItem->Release();

break;

}

if(pLogItem == NULL && bCreate)

{

m_pXMLDoc->createElement(CComBSTR(lpszParent), &element);

pRootNode->appendChild(element, &pLogItem);

element->Release();

m_pXMLDoc->createElement(CComBSTR(lpszChild), &element);

pLogItem->appendChild(element, &pLogData);

element->Release();

pResultNode = pLogData;

}

pRootNode->Release();

return pResultNode;

}

* 函数名称: AppendNode(IXMLDOMNode * pXMLItem, LPCTSTR lpszNodeName, LPCTSTR lpszValue)

* 说明: 在XML中添加一节点,并赋值为 lpszValue

* 参数:

* IN IXMLDOMNode * pXMLItem 要添加节点的节点指针

* IN LPCTSTR lpszNodeName 添加的节点名称

* IN LPCTSTR lpszComment 值

void CXMLLogfile::AppendNode(IXMLDOMNode * pXMLItem, LPCTSTR lpszNodeName, LPCTSTR lpszValue)

{

IXMLDOMElement *element;

IXMLDOMNode *pLogData;

m_pXMLDoc->createElement(CComBSTR(lpszNodeName),&element);

pXMLItem->appendChild(element,&pLogData);

element->Release();

pLogData->put_text(CComBSTR(lpszValue));

pLogData->Release();

}

* 函数名称: AppendItem(LPCTSTR lpszFileName,LPCTSTR lpszComment)

* 说明: 在XML中添加一条日志

* 参数:

* IN LPCTSTR lpszFileName 文件信息

* IN LPCTSTR lpszComment 错误信息

void CXMLLogfile::AppendItem(LPCTSTR lpszFileName,LPCTSTR lpszComment)

{

IXMLDOMElement *pRootNode, *element;

IXMLDOMNode *nLogItem;

CComBSTR szName;

HRESULT hr;

CTime timeCur ;

timeCur = CTime::GetCurrentTime();

CString strDate, strTime;

strDate = timeCur.Format(_T("%Y-%m-%d"));

strTime = timeCur.Format(_T("%X"));

hr = m_pXMLDoc->get_documentElement(&pRootNode);

m_pXMLDoc->createElement(CComBSTR(_T("LogItem")),&element);

pRootNode->appendChild(element,&nLogItem);

element->Release();

AppendNode(nLogItem,_T("Date"),strDate);

AppendNode(nLogItem,_T("Time"),strTime);

AppendNode(nLogItem,_T("Filename"),lpszFileName);

AppendNode(nLogItem,_T("comment"),lpszComment);

pRootNode->Release();

}

* 函数名称: Flush()

* 说明: 将缓冲区内数据写到磁盘保存XML文件

* 参数:

* 无

void CXMLLogfile::Flush()

{

m_pXMLDoc->save(COleVariant(m_strFileName));

}

* 函数名称: Log(LPCTSTR lpszFilName,LPCTSTR s,...)

* 说明: 添加一条日值记录

* 参数:

* LPCTSTR lpszFileName 文件信息

* LPCTSTR s 其他错误信息

* EXAMPLE:

* Log(__FILE__,"%ld line error!!",__LINE__)

void CXMLLogfile::Log(LPCTSTR lpszFilName,LPCTSTR s,...)

{

static TCHAR szBuff[1024];

va_list argptr;

int cnt;

va_start(argptr, s);

cnt = _vstprintf(szBuff, s, argptr);

va_end(argptr);

AppendItem(lpszFilName,szBuff);

Flush();

}

* 函数名称: ClearAll()

* 说明: 清除日值

* 参数:

* 无

* 返回值: 成功 true

bool CXMLLogfile::ClearAll()

{

IXMLDOMElement *pRootNode= NULL;

IXMLDOMNode *pLogItem= NULL, *pLogData= NULL, *pOldNode= NULL, *pNextNode ,*pPreviousNode;

CComBSTR szName;

HRESULT hr ;

m_pXMLDoc->get_documentElement(&pRootNode);

try

{

pRootNode->get_lastChild(&pLogItem);

{

pLogItem->get_previousSibling(&pPreviousNode);

pLogItem->get_baseName(&szName);

if(szName == CComBSTR(_T("LogItem")))

{

pLogItem->get_firstChild(&pLogData);

{

pLogData->get_nextSibling(&pNextNode);

pLogData->get_baseName(&szName);

hr = pLogItem->removeChild(pLogData,&pOldNode);

if (FAILED(hr))

_com_issue_error(hr);

pOldNode->Release();

pOldNode = NULL;

pLogData = pNextNode;

}while(pLogData != NULL);

}

hr = pRootNode->removeChild(pLogItem,&pOldNode);

if (FAILED(hr))

_com_issue_error(hr);

pLogItem = pPreviousNode;

}while(pLogItem != NULL);

pRootNode->Release();

}

catch(_com_error &e)

{

pRootNode->Release();

DumpComError(e);

return false;

}

Flush();

return true;

}