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void MvPublic::Createlog(QString filepath, int nums)
{
logfilePath = filepath; //全局私有变量,日志路径-格式为 C:/MVLOG/ContraolBoard
QDir filedir(filepath);
if (filedir.exists()) //如果路径存在,删除老的老的日志文件
{
QFileInfoList filelist = filedir.entryInfoList(QDir::Files,QDir::Name); //过滤当前路径下的文件并排序
if(filelist.count()>nums)
{
QStringList logfilelist;
for(int i=0;i<filelist.count();i++)
{
if(QString::compare(filelist[i].suffix(),"log",Qt::CaseSensitive)==0) //判断是否为日志文件
{
logfilelist.append(filelist[i].path());
}
}
if(logfilelist.count()>nums) //判断数量是否大于指定保存数量
{
for(int i=0;i<logfilelist.count()-nums;i++)
filedir.remove(logfilelist[i]); //删除多余的日志文件
}
}
}
else
filedir.mkpath(filepath); //不存在就创建路径
logfileName = logfilePath+"/"+QString(QDateTime::currentDateTime().toString("yyyyMMdd"))+".log";
logfile.setFileName(logfileName);
logfile.open(QIODevice::WriteOnly|QIODevice::Append);
logStream.setDevice(&logfile);
Writlog("*****************应用程序启动*****************");
}
void MvPublic::Writlog(QString sloginfo)
{
logMutex.lock();
QString Currentfilename = logfilePath+"/"+QString(QDateTime::currentDateTime().toString("yyyyMMdd"))+".log";
if (Currentfilename!=logfileName) //新的一天,重新创建一个文件
{
logfile.close();
logfileName=Currentfilename;
logfile.setFileName(logfileName);
logfile.open(QIODevice::WriteOnly|QIODevice::Append);
}
sloginfo = "["+QString(QDateTime::currentDateTime().toString("hh:mm:ss:zzz"))+"] "+sloginfo;
logStream<<sloginfo<<"\r\n";
logStream.flush();
logfile.flush();
logMutex.unlock();
}
static void messageOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg);
qInstallMessageHandler(messageOutput);
static void writeLogFile(const QString &msg);
static QString getLogFilePath();
static void messageOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
static QMutex mutex;
mutex.lock();
QByteArray localMsg = msg.toUtf8();
switch (type)
{
case QtDebugMsg:
case QtInfoMsg:
case QtWarningMsg:
if( debug )
{
fprintf(stdout, "%s\n", QVariant(localMsg).toString().toUtf8().constData());
fflush(stdout);
}
break;
case QtCriticalMsg:
if( debug )
{
fprintf(stderr, "%s\n", QVariant(localMsg).toString().toUtf8().constData());
fflush(stderr);
}
break;
case QtFatalMsg:
fprintf(stderr, "%s\n", QVariant(localMsg).toString().toUtf8().constData());
fflush(stderr);
break;
// abort();
}
writeLogFile(text);
mutex.unlock();
}
static void writeLogFile(const QString &msg)
{
if(qApp==nullptr)
{
return;
}
QString path = getLogFilePath();
QLocale lo(QLocale::C);
QDateTime dateTime = QDateTime::currentDateTimeUtc();
dateTime = dateTime.toLocalTime();
QString name = lo.toString(dateTime, "yyyyMMdd.log");
QString filePath = path + name;
QFile file(filePath);
if(!file.exists ())
{
file.open(QIODevice::WriteOnly);
file.close();
}
if(file.open(QIODevice::WriteOnly | QIODevice::Append))
{
QTextStream stream(&file);
stream << msg << "\r\n";
file.flush();
file.close();
}
}
static QString getLogFilePath()
{
QString logPath = QString::fromStdString(Application::GetCurrentApplicationSupportDirectory());
logPath = logPath + QDir::separator() + "logs" + QDir::separator();
QDir dir(logPath);
if(!dir.exists(logPath))
{
dir.mkpath(logPath);
}
return logPath;
}
#include "widget.h"
#include <QApplication>
#include <iostream>
#include <cstdlib>
#include <QFile>
#include <QString>
#include <QTextStream>
#include <QMutex>
#include <QDateTime>
using namespace std;
QMutex mutex;//日志代码互斥锁
QString timePoint;
//日志生成
void LogMsgOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
mutex.lock();
cout << msg.toStdString() << endl;
//Critical Resource of Code
QByteArray localMsg = msg.toLocal8Bit();
QString log;
switch (type) {
case QtDebugMsg:
//fprintf(stderr, "Debug: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
log.append(QString("Debug File:%1 %2 Line:%3 Content:%4").arg(context.file).arg(context.function).arg(context.line).arg(msg));
break;
case QtInfoMsg:
//fprintf(stderr, "Info: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
log.append(QString("Info: %1 %2 %3 %4").arg(localMsg.constData()).arg(context.file).arg(context.line).arg(context.function));
break;
case QtWarningMsg:
//fprintf(stderr, "Warning: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
log.append(QString("Warning: %1 %2 %3 %4").arg(localMsg.constData()).arg(context.file).arg(context.line).arg(context.function));
break;
case QtCriticalMsg:
//fprintf(stderr, "Critical: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
log.append(QString("Critical: %1 %2 %3 %4").arg(localMsg.constData()).arg(context.file).arg(context.line).arg(context.function));
break;
case QtFatalMsg:
//fprintf(stderr, "Fatal: %s (%s:%u, %s)\n", localMsg.constData(), context.file, context.line, context.function);
log.append(QString("Fatal: %1 %2 %3 %4").arg(localMsg.constData()).arg(context.file).arg(context.line).arg(context.function));
abort();
}
QFile file;
QString path = QString("log%1.lgt").arg(timePoint);
file.setFileName(path);
if (!file.open(QIODevice::ReadWrite | QIODevice::Append))
{
QString erinfo = file.errorString();
cout << erinfo.toStdString() << endl;
return;
}
QTextStream out(&file);
out << "\n\r" << log;
file.close();
mutex.unlock();
}
int main(int argc, char *argv[])
{
//release模式下,调试信息输出至日志文件
#ifndef _DEBUG
timePoint = QDateTime::currentDateTime().toString("yyyyMMddHHmmss");
qInstallMessageHandler(LogMsgOutput);
#endif
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}