在Log4j 2.10以前的版本，pattern中配置%highlight屬性是可以正常打印彩色日志的
例如：
pattern: "%d{yyyy-MM-dd HH:mm:ss.SSS} %highlight{%-5level} [%t] %highlight{%c{1.}.%M(%L)}: %msg%n"
但是更新到2.10版本以后，控制台中就無法顯示彩色日志了，各種級別的日志混雜在一起，難以閱讀
通過查閱官方文檔，發現在2.10版本以后，Log4j2默認關閉了Jansi（一個支持輸出ANSI顏色的類庫）
ANSI Styling on Windows
ANSI escape sequences are supported natively on many platforms but are not by default on Windows. To enable ANSI support add the Jansi jar to your application and set property log4j.skipJansi to false. This allows Log4j to use Jansi to add ANSI escape codes when writing to the console.
NOTE: Prior to Log4j 2.10, Jansi was enabled by default. The fact that Jansi requires native code means that Jansi can only be loaded by a single class loader. For web applications this means the Jansi jar has to be in the web container's classpath. To avoid causing problems for web applications, Log4j will no longer automatically try to load Jansi without explicit configuration from Log4j 2.10 onward.
可見，配置 log4j.skipJansi 這個全局屬性即可。
IDEA中，點擊右上角->Edit Configurations，在VM options中添加
-Dlog4j.skipJansi=false
啟動應用，顯示效果如下：
