如何更改默认使用的boost ::登录:: BOOST_TRIVIAL_LOG格式化？ [英] How to change the default formatting with boost::log::BOOST_TRIVIAL_LOG?

问题描述

的boost ::日志看起来真的很强大。它提供了微不足道的日志记录BOOST_LOG_TRIVIAL宏。但我怎么能更改默认的格式？它打印默认情况下，时间戳，由我不希望它。你有什么主意吗？看来唯一的办法就是定义一个新的水槽前从头并将其添加到核心，那么你可以调用set_format（）在后端的情况。但是，这不是微不足道了。

boost::log looks really powerful. It offers a BOOST_LOG_TRIVIAL macro for trivial logging. But how can I change the default formatting? It prints the timestamp by default, by I don't want it. Do you have any idea? It seems the only way is to define a new sink ex-novo and add it to the core, then you can call set_format() on the backend in case. But this is no "trivial" anymore.

推荐答案

Boost.Log有一个默认的水槽，只要你不提供自己的散热器所使用。
下面code片段通过添加新下沉的变化控制台日志的格式。

Boost.Log has a default sink, which is used as long as you do not provide your own sink. The following code snippet changes the format of the console-log by adding a new sink.

#include <boost/log/trivial.hpp>
#include <boost/log/utility/setup/console.hpp>

int main()
{
    boost::log::add_console_log(std::cout, boost::log::keywords::format = ">> %Message%");
    BOOST_LOG_TRIVIAL(info) << "Hello world!";
}

请注意，你必须在log_setup库添加到您的构建，即做一个

Note that you have to add the log_setup library to your build i.e. do a

-lboost_log_setup -lboost_log

，其中库的顺序是非常重要的。

where the order of the libs is important.

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