重构qDebug()<<，使log输出到文件

重构qDebug()<<，使log输出到文件

#include <QProcessEnvironment>#include <QDateTime>#include <QFile>#include <QIODevice>class HSDbg{public:    HSDbg& operator<<(const QString& str)    {        QTextStream txtOutput(&qtLogfile);        if(qtLogfile.open(QIODevice::Append | QIODevice::Text))        {            qDebug() << str;            txtOutput << str << "\n";            qtLogfile.close();        }        return *this;    }    HSDbg& operator<<(const QByteArray& str)    {        QTextStream txtOutput(&qtLogfile);        if(qtLogfile.open(QIODevice::Append | QIODevice::Text))        {            qDebug() << str;            txtOutput << str << "\n";            qtLogfile.close();        }        return *this;    }    HSDbg& operator<<(const char* str)    {        QTextStream txtOutput(&qtLogfile);        if(qtLogfile.open(QIODevice::Append | QIODevice::Text))        {            qDebug() << QString(str);            txtOutput << str << "\n";            qtLogfile.close();        }        return *this;    }    HSDbg& operator<<(const int& i)    {        QTextStream txtOutput(&qtLogfile);        if(qtLogfile.open(QIODevice::Append | QIODevice::Text))        {            qDebug() << i;            txtOutput << i << "\n";            qtLogfile.close();        }        return *this;    }    HSDbg(QString fileName)    {        qtLogfile.setFileName(fileName);    }private:    QFile qtLogfile;};#define LOG_FILE_PATH   QProcessEnvironment::systemEnvironment().value("APPDATA") + "\\test\\logs\\"#define LOG_FILE_NAME   "Qt_" + QDateTime::currentDateTime().toString("yyyy-MM-dd_hh-mm-ss") + ".txt"static HSDbg sHSDbg(LOG_FILE_PATH + LOG_FILE_NAME);//用此QDBG输出到log文件中#define QDBG sHSDbg<<"==="+QString(__FILE__)+" "+QString(__FUNCTION__)+"():"+QString::number(__LINE__)//用此QDBG输出到consloe上//#define QDBG qDebug()<<__FILE__<<__FUNCTION__<<"():"<<__LINE__