Log4J 和 Log4J2

Log4j 目录

log4j 代码例子

log4j 日志级别

slf4j+log4j 使用

log4j.properties 模板

log4j ConversionPattern参数

maven依赖冲突 log4j-slf4j-impl-2.10.0.jar和slf4j-log4j12-1.6.1.jar 都有 StaticLoggerBinder.class 类

Log4J介绍（Logger、Level、Appender、Layout、Threshold）

Container exited with a non-zero exit code 1. Error file: prelaunch.err. Last 4096 bytes of prelaunch.err : Last 4096 bytes of stderr : log4j:WARN No appenders could be found for logger