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C++日志库log4cplus的使用详解

2023-03-01 12:00

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编译&&安装

下载完成在ubuntn中解压&&编译

（使用默认参数和路径）

1、sudo ./configure

2、sudo make

3、sudo make install

（安装完成后头文件路径默认在/usr/loca/include,库文件路径在/usr/local/lib）

4、把库文件路径加入到/etc//etc/ld.so.conf文件中然后执行sudo ldconfig

编写demo

测试需要四个文件，是 MyLogger.h , main.cpp , logconfig.property , CMakeLists.txt （用cmake编译时可用），文件内容如下，放入同一个文件夹进行编译

MyLogger.h

#include <log4cplus/logger.h>
#include <log4cplus/configurator.h> 
#include <log4cplus/layout.h> 
#include <log4cplus/loggingmacros.h> 
#include <log4cplus/helpers/stringhelper.h> 

#define MY_LOG_FILE_PATH "logconfig.property"

class MyLogger
{
private:
    MyLogger()
    {
        log4cplus::initialize();
        log4cplus::PropertyConfigurator::doConfigure(LOG4CPLUS_TEXT(MY_LOG_FILE_PATH));
        
        m_rootLog = log4cplus::Logger::getRoot();

        m_loggerYW = log4cplus::Logger::getInstance("loggerYW");
        m_loggerWJ = log4cplus::Logger::getInstance("loggerWJ");
        m_loggerUI = log4cplus::Logger::getInstance("loggerUI");     
    }
    ~MyLogger()
    {
        if (m_logger)
        {
            delete m_logger;
        }
    }


    static MyLogger* m_logger;

public:
    static MyLogger * getInstance()
    {
        if (m_logger == NULL)
        {
            m_logger = new MyLogger();
        }
        return m_logger;
        }

    log4cplus::Logger m_rootLog;
    
    log4cplus::Logger m_loggerYW;
    log4cplus::Logger m_loggerWJ;
    log4cplus::Logger m_loggerUI;

};

MyLogger* MyLogger::m_logger = NULL;

main.cpp

#include "MyLogger.h"

int main(int argc, char *argv[])
{
    MyLogger * myLoger = NULL;
    myLoger = MyLogger::getInstance();

    LOG4CPLUS_FATAL(myLoger->m_loggerYW, "DeleteService failed,errCode=[" << 2 << "]");
    LOG4CPLUS_DEBUG(myLoger->m_loggerWJ, " Service is removed");
    LOG4CPLUS_DEBUG(myLoger->m_loggerUI, " Service ");
    
    return 0;
}

logconfig.property

log4cplus.rootLogger=DEBUG,rootLogger
log4cplus.appender.rootLogger=log4cplus::RollingFileAppender  
#log4cplus.appender.rootLogger=log4cplus::ConsoleAppender
log4cplus.appender.rootLogger.MaxFileSize=100MB
log4cplus.appender.rootLogger.MaxBackupIndex=2
log4cplus.appender.rootLogger.File=rootLogger.log
log4cplus.appender.rootLogger.layout=log4cplus::PatternLayout
log4cplus.appender.rootLogger.layout.ConversionPattern=%D:%d{%Q}|%p|%t|%l|%m|%n
log4cplus.appender.rootLogger.filters.1=log4cplus::spi::LogLevelRangeFilter
log4cplus.appender.rootLogger.filters.1.LogLevelMin=TRACE
log4cplus.appender.rootLogger.filters.1.LogLevelMax=FATAL
log4cplus.appender.rootLogger.filters.1.AcceptOnMatch=true
log4cplus.appender.rootLogger.filters.2=log4cplus::spi::DenyAllFilter
  
log4cplus.logger.loggerYW=DEBUG,loggerYW
log4cplus.appender.loggerYW=log4cplus::RollingFileAppender
log4cplus.appender.loggerYW.File=loggerYW.log
log4cplus.appender.loggerYW.layout=log4cplus::PatternLayout
log4cplus.appender.loggerYW.layout.ConversionPattern=%D:%d{%Q}|%p|%t|%l|%m|%n
log4cplus.appender.loggerYW.filters.1=log4cplus::spi::LogLevelRangeFilter
log4cplus.appender.loggerYW.filters.1.LogLevelMin=TRACE
log4cplus.appender.loggerYW.filters.1.LogLevelMax=FATAL
log4cplus.appender.loggerYW.filters.1.AcceptOnMatch=true
log4cplus.appender.loggerYW.filters.2=log4cplus::spi::DenyAllFilter
log4cplus.appender.loggerYW.MaxFileSize=100MB
log4cplus.appender.loggerYW.MaxBackupIndex=2
log4cplus.additivity.loggerYW=false

log4cplus.logger.loggerWJ=DEBUG,loggerWJ
log4cplus.appender.loggerWJ=log4cplus::RollingFileAppender
log4cplus.appender.loggerWJ.File=loggerWJ.log
log4cplus.appender.loggerWJ.layout=log4cplus::PatternLayout
log4cplus.appender.loggerWJ.layout.ConversionPattern=%D:%d{%Q}|%p|%t|%l|%m|%n
log4cplus.appender.loggerWJ.filters.1=log4cplus::spi::LogLevelRangeFilter
log4cplus.appender.loggerWJ.filters.1.LogLevelMin=TRACE
log4cplus.appender.loggerWJ.filters.1.LogLevelMax=FATAL
log4cplus.appender.loggerWJ.filters.1.AcceptOnMatch=true
log4cplus.appender.loggerWJ.filters.2=log4cplus::spi::DenyAllFilter
log4cplus.appender.loggerWJ.MaxFileSize=100MB
log4cplus.appender.loggerWJ.MaxBackupIndex=2
log4cplus.additivity.loggerWJ=false

log4cplus.logger.loggerUI=DEBUG,loggerUI
log4cplus.appender.loggerUI=log4cplus::RollingFileAppender
log4cplus.appender.loggerUI.File=loggerUI.log
log4cplus.appender.loggerUI.layout=log4cplus::PatternLayout
log4cplus.appender.loggerUI.layout.ConversionPattern=%D:%d{%Q}|%p|%t|%l|%m|%n
log4cplus.appender.loggerUI.filters.1=log4cplus::spi::LogLevelRangeFilter
log4cplus.appender.loggerUI.filters.1.LogLevelMin=TRACE
log4cplus.appender.loggerUI.filters.1.LogLevelMax=FATAL
log4cplus.appender.loggerUI.filters.1.AcceptOnMatch=true
log4cplus.appender.loggerUI.filters.2=log4cplus::spi::DenyAllFilter
log4cplus.appender.loggerUI.MaxFileSize=100MB
log4cplus.appender.loggerUI.MaxBackupIndex=2
log4cplus.additivity.loggerUI=false

CMakeLists.txt

# CMake 最低版本号要求
CMAKE_MINIMUM_REQUIRED(VERSION 2.8)

# 项目名
PROJECT(LOG)

# 添加第三方的库
SET(INC_DIR "/usr/local/include/")
SET(LINK_DIR "/usr/local/lib")

INCLUDE_DIRECTORIES(${INC_DIR})    # 设置头文件搜索路径
LINK_DIRECTORIES(${LINK_DIR})    #指定要链接的库文件的路径，一般不需要
# 将第三方的库链接到可执行文件，静态链接
LINK_LIBRARIES(log4cplus)

# 指定源文件
SET(class="lazy" data-src_LIST "main.cpp")
MESSAGE(STATUS "class="lazy" data-src_LIST :" ${class="lazy" data-src_LIST})

# 指定生成目标
ADD_EXECUTABLE(${PROJECT_NAME} ${class="lazy" data-src_LIST})

# 将第三方的库链接到可执行文件，动态链接
#TARGET_LINK_LIBRARIES(${PROJECT_NAME} log4cplus)

# 安装目标文件
SET(PROJECT_INSTALL_PREFIX "/mnt/hgfs/VM_Shared/Teselog4cplus/build/dd")
INSTALL(TARGETS ${PROJECT_NAME}
        DESTINATION ${PROJECT_INSTALL_PREFIX}
         PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)

# 安装配置文件
SET(CONFIG_INSTALL_PREFIX "/mnt/hgfs/VM_Shared/Teselog4cplus/build")        
INSTALL(FILES logconfig.property
        DESTINATION ${CONFIG_INSTALL_PREFIX})

用cmake进行编译