logcpp demo

step1：nug下载log4cpp

step2：实现demo

#include <iostream>

#include <log4cpp/Category.hh>

#include <log4cpp/Appender.hh>

#include <log4cpp/FileAppender.hh>

#include <log4cpp/Priority.hh>

#include <log4cpp/PatternLayout.hh>

#include <log4cpp/RollingFileAppender.hh>

using namespace std;

int main()

{

log4cpp::PatternLayout* pLayout1 = new log4cpp::PatternLayout();//创建一个Layout;

pLayout1->setConversionPattern("%d: %p %c %x: %m%n");//指定布局格式;

log4cpp::Appender* fileAppender = new log4cpp::FileAppender("fileAppender", "wxb.log");//创建一个Appender;

fileAppender->setLayout(pLayout1);//将指定的Layout添加到Appender;

log4cpp::Category& root = log4cpp::Category::getRoot().getInstance("RootName");//从系统中得到Category的根;

root.addAppender(fileAppender);//将Appender添加到Category;

root.setPriority(log4cpp::Priority::DEBUG);//设置Category的优先级;

//开始记录日志;

for (int i = 0; i < 100; i++)

{

string strError;

ostringstream oss;

oss << i << ":Root Error Message!";

strError = oss.str();

root.error(strError);

cout << strError <<endl;

}

log4cpp::Category::shutdown();//关闭Category;

}