Logging

Links

Using logger without Application class

Getting Started

To use logging without using the POCO application class:

Create a simple LogManager class which creates a Logger:

#include "Poco/FileChannel.h"
#include "Poco/FormattingChannel.h"
#include "Poco/Logger.h"
#include "Poco/Message.h"
#include "Poco/PatternFormatter.h"

LogManager::LogManager()
{
    Poco::FormattingChannel* pFCFile = new Poco::FormattingChannel(new Poco::PatternFormatter("%Y-%m-%d %H:%M:%S.%c %N[%P]:%s:%q:%t"));
    pFCFile->setChannel(new Poco::FileChannel("logger.log"));
    pFCFile->open();
    Poco::Logger::create("FileLogger", pFCFile, Poco::Message::PRIO_TRACE);
}

Create an instance of the LogManager class (in the main entry point to your application:
```
LogManager();
```

In the other classes where you want to do some logging:

#include "Poco/Logger.h"

HtmlDocumentReader::HtmlDocumentReader()
{
    Poco::Logger::get("FileLogger").error("HtmlDocumentReader");

The log output for the above sample will appear on the Windows Desktop…