C++之LOG文件

        可以进行Log日志文件的编写，便于记录代码运行的Log情况，尤其是在qt开发中，无法显示到终端的情况。

Log.h文件

#include "Log.h"
std::ofstream file(getLogFilePath());
/*
  Function:
      name:getLogFilePath;
      param_1:none
      introduce:用于为日志提供存储位置及命名
      Auto:Qax
      Modify History:
          v1:2024/3/19  12：00 编写完成
  */
std::string getLogFilePath() {
    CTime currenttime = CTime::GetCurrentTime();
    std::string month, day, hour, minute;
    if (currenttime.GetMonth() < 10) month = "0" + std::to_string(currenttime.GetMonth());
    else month = std::to_string(currenttime.GetMonth());
    if (currenttime.GetDay() < 10) day = "0" + std::to_string(currenttime.GetDay());
    else day = std::to_string(currenttime.GetDay());
    if (currenttime.GetHour() < 10) hour = "0" + std::to_string(currenttime.GetHour());
    else hour = std::to_string(currenttime.GetHour());
    if (currenttime.GetMinute() < 10) minute = "0" + std::to_string(currenttime.GetMinute());
    else minute = std::to_string(currenttime.GetMinute());
    std::string str = "LOG_" + std::to_string(currenttime.GetYear()) + month + day + hour + minute + ".txt";
    return "C:\\Users\\Administrator\\Desktop\\log_files\\" + str;
}
/*
  Function:用于初始化静态常量
  */
static const char* gs_netUvLogName[4] = {
    "INFO",
    "WARNING",
    "ERROR",
    "FATAL"
};
/*
  Function:
      name:NetUVLog;
      param_1:用于传入日志类型
      param_2:用于传入日志信息
      introduce:用于写入日志信息函数
      Auto:Qax
      Modify History:
          v1:2024/3/19  12：21 测试成功完成
  */
void  NetUVLog(std::string sourcefilename, int line, NET_UV_LOG_TYPE type, std::string message) {
    time_t  timer;
    char logTime[TIME_BUF_LEN];  //#define TIME_BUF_LEN 64
    std::string logInfo;
    //获取当前事件，年月日时分秒
    time(&timer);
    strftime(logTime, TIME_BUF_LEN, "%Y-%m-%d %H:%M:%S", localtime(&timer));
    logInfo = logTime;
    logInfo.append("  " + sourcefilename);
    logInfo.append("  Line:" + std::to_string(line));
    logInfo.append("  [");
    logInfo.append(gs_netUvLogName[(int)type]);
    logInfo.append("]  ");
    logInfo.append(message);
    file << logInfo.c_str() << std::endl;
}

 Log.cpp文件

#include "Log.h"
std::ofstream file(getLogFilePath());
/*
  Function:
      name:getLogFilePath;
      param_1:none
      introduce:用于为日志提供存储位置及命名
      Auto:Qax
      Modify History:
          v1:2024/3/19  12：00 编写完成
  */
std::string getLogFilePath() {
    CTime currenttime = CTime::GetCurrentTime();
    std::string month, day, hour, minute;
    if (currenttime.GetMonth() < 10) month = "0" + std::to_string(currenttime.GetMonth());
    else month = std::to_string(currenttime.GetMonth());
    if (currenttime.GetDay() < 10) day = "0" + std::to_string(currenttime.GetDay());
    else day = std::to_string(currenttime.GetDay());
    if (currenttime.GetHour() < 10) hour = "0" + std::to_string(currenttime.GetHour());
    else hour = std::to_string(currenttime.GetHour());
    if (currenttime.GetMinute() < 10) minute = "0" + std::to_string(currenttime.GetMinute());
    else minute = std::to_string(currenttime.GetMinute());
    std::string str = "LOG_" + std::to_string(currenttime.GetYear()) + month + day + hour + minute + ".txt";
    //此处是保存地址
    return "C:\\Users\\Administrator\\Desktop\\log_files\\" + str;
}
/*
  Function:用于初始化静态常量
  */
static const char* gs_netUvLogName[4] = {
    "INFO",
    "WARNING",
    "ERROR",
    "FATAL"
};
/*
  Function:
      name:NetUVLog;
      param_1:用于传入日志类型
      param_2:用于传入日志信息
      introduce:用于写入日志信息函数
      Auto:Qax
      Modify History:
          v1:2024/3/19  12：21 测试成功完成
  */
void  NetUVLog(std::string sourcefilename, int line, NET_UV_LOG_TYPE type, std::string message) {
    time_t  timer;
    char logTime[TIME_BUF_LEN];  //#define TIME_BUF_LEN 64
    std::string logInfo;
    //获取当前事件，年月日时分秒
    time(&timer);
    strftime(logTime, TIME_BUF_LEN, "%Y-%m-%d %H:%M:%S", localtime(&timer));
    logInfo = logTime;
    logInfo.append("  " + sourcefilename);
    logInfo.append("  Line:" + std::to_string(line));
    logInfo.append("  [");
    logInfo.append(gs_netUvLogName[(int)type]);
    logInfo.append("]  ");
    logInfo.append(message);
    file << logInfo.c_str() << std::endl;
}

在Log文件使用的时候，用

	NetUVLog(__FILE__, __LINE__, NET_UV_LOG_TYPE::NET_UV_LOG_INFO, 日志信息);

        至此，可完成日志的记录！

        以此笔记！