log4cpp封装成独立的类（单例模式）

21岁被迫秃头2023-10-17 2:09

一、编译安装

二、封装使用

头文件Logger.h:

cpp 复制代码

#ifndef DISTRIBUTED_LOGGER_H_
#define DISTRIBUTED_LOGGER_H_

#include <string>
#include <log4cpp/Category.hh>


class Logger{
public:
    bool init(const std::string& log_conf_file);

    static Logger* instance(){//返回单例------全局唯一对象
        return &instance_;
    }
    log4cpp::Category* get_handle(){
        return category_;
    }
    
protected:
    static Logger instance_;
    log4cpp::Category* category_;
};

#define LOG_INFO Logger::instance()->get_handle()->info
#define LOG_DEBUG Logger::instance()->get_handle()->debug
#define LOG_ERROR Logger::instance()->get_handle()->error
#define LOG_WARN Logger::instance()->get_handle()->warn

#endif

实现类Logger.cpp：

cpp 复制代码

#include "Logger.h"

#include <iostream>
#include <log4cpp/Category.hh>
#include <log4cpp/FileAppender.hh>
#include <log4cpp/PatternLayout.hh>
#include <log4cpp/OstreamAppender.hh>
#include <log4cpp/PropertyConfigurator.hh>

Logger Logger::instance_;

bool Logger::init(const std::string& log_conf_file){
    try{
        log4cpp::PropertyConfigurator::configure(log_conf_file);

    }catch(log4cpp::ConfigureFailure& f){
        std::cerr << " load log config file " << log_conf_file.c_str() << " failed with result : " << f.what()<< std::endl;
        return false;
    }
    category_ = &log4cpp::Category::getRoot();
    return true;
}