Question

I am using log4cxx with normal way, which provides a property file for log4cxx. Here we can find a reference:

log4cxx: configuring appender with arguments

Reading Property Info in Log4cxx

But if I want to set log4cxx in my C++ code without property file, what should I do? I check the log4cxx code and try to set properties by log4cxx::helpers::Properties, here is my sample code:

    log4cxx::helpers::Properties properties;
    properties.setProperty(L"log4j.rootLogger",L"DEBUG");
    properties.setProperty(L"log4j.appender",L"ca");
    properties.setProperty(L"log4j.appender",L"fa");

    properties.setProperty(L"log4j.appender.fa",L"org.apache.log4j.FileAppender");
    properties.setProperty(L"log4j.appender.fa.Append",L"false");
    properties.setProperty(L"log4j.appender.fa.File",L"./test.log");
    properties.setProperty(L"log4j.appender.fa.layout",L"org.apache.log4j.PatternLayout");
    properties.setProperty(L"log4j.appender.fa.layout.ConversionPattern",L"%d [%t] %-5p %.16c - %m%n");

    properties.setProperty(L"log4j.appender.ca",L"org.apache.log4j.ConsoleAppender");
    properties.setProperty(L"log4j.appender.ca.layout",L"log4j.appender.ca.layout");
    properties.setProperty(L"log4j.appender.ca.layout.ConversionPattern",L"%d [%t] %-5p %.16c - %m%n");

    log4cxx::PropertyConfigurator::configure(properties);

But my sample code doesn’t work. Why? Anyone knows how to initialize log4cxx logger without property file?

Thanks

Water Lin

Answer 1

I found the code example in the log4cxx wiki helpful when facing the same challenge.