默认配置与自定义配置文件位置

使用默认配置

默认配置为输出到控制台,且日志基本为ERROR.

public void testUseDefaultConf() {
    Logger logger = LogManager.getLogger(LogManager.ROOT_LOGGER_NAME);
    logger.trace("trace level");
    logger.debug("debug level");
    logger.info("info level");
    logger.warn("warn level");
    logger.error("error level");
    logger.fatal("fatal level");
}

其输出结果：

16:59:42.902 [main] ERROR  - error level
16:59:42.906 [main] FATAL  - fatal level

自定义配置文件位置

用Configurator执行初始化:

public class LoadLog4jConf {
    public static void main(String[] args) throws IOException {
        InputStream resourceAsStream = Thread.currentThread().getContextClassLoader()
                .getResourceAsStream("log4j2/log4j2.xml");
        ConfigurationSource source = new ConfigurationSource(resourceAsStream);
        Configurator.initialize(null, source);
        Logger logger = LogManager.getLogger(LoadLog4jConf.class);
        logger.info("LoadLog4jConf");
    }
}