Qt 日志宏

随便写了一个日志帮助的宏，既可以如同qDebug（）一般在调试时输出信息，也可以在输出文本文件

#ifndef LOG_H
#define LOG_H

#include <QDir>
#include <QFile>
#include <QString>
#include <QDebug>
#include <QDate>
#include <QTime>
#include <QDateTime>
#include <QTextStream>

#define WRITE_LOG_FILE(type,msg)(\
{QString err;\
    switch(type){\
        case QtDebugMsg:{err = "调试信息：";}break;\
        case QtWarningMsg:{err = "警告信息：";}break;\
        case QtCriticalMsg:{err = "严重错误：";}break;\
        case QtFatalMsg:{err = "致命错误：";}break;\
        default:{err = "常规信息：";}break;}\
    QString text = QString("%1\r\n 所在文件：%2 \r\n 所在位置：%3 \r\n 记录时间：%4 \r\n 记录信息：%5 \r\n").arg (err).arg (__FILE__).arg (__LINE__).arg (QDateTime::currentDateTime ().toString ("yyyy-MM-dd hh:mm:ss ddd")).arg (msg);qDebug() << text;\
    QDir dir;\
    QString path = dir.currentPath () + "\\log\\";\
    QDateTime dt = QDateTime::currentDateTime ();\
    QTime t = dt.time ();\
    QDate d = dt.date ();\
    QString name = QString("%1%2%3%4").arg (QString::number (d.year ())).arg (QString::number (d.month ())).arg (QString::number (d.day ())).arg (QString::number (t.hour ())) + QString(".txt");\
    QString filePath = path + name;\
    if(!dir.exists(path))\
    {\
        dir.mkpath(path);\
    }\
    QFile file(filePath);\
    if(!file.exists ())\
    {\
        file.open (QIODevice::WriteOnly);\
        file.close ();\
    }\
    if(file.open(QIODevice::WriteOnly | QIODevice::Append))\
    {\
        QTextStream stream(&file);\
        stream << text << "\r\n";\
        file.flush();file.close();\
    }\
})
#define DEBUG_LOG(msg)(WRITE_LOG_FILE(QtDebugMsg,msg))
#define WARNING_LOG(msg)(WRITE_LOG_FILE(QtWarningMsg,msg))
#define CRITICAL_LOG(msg)(WRITE_LOG_FILE(QtCriticalMsg,msg))
#define FATAL_LOG(msg)(WRITE_LOG_FILE(QtFatalMsg,msg))
#define LOG(msg)(WRITE_LOG_FILE(-1,msg))

#endif // LOG_H