maven项目引入log4j配置

1.导入依赖包

<log4j.version>1.2.17</log4j.version>
<slf4j-api.version>1.7.5</slf4j-api.version>
<slf4j-log4j12.version>1.7.12</slf4j-log4j12.version>

<!-- log4j -->
<dependency>
  <groupId>log4j</groupId>
  <artifactId>log4j</artifactId>
  <version>${log4j.version}</version>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-api</artifactId>
  <version>${slf4j-api.version}</version>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-log4j12</artifactId>
  <version>${slf4j-log4j12.version}</version>
</dependency>

2.直接在src/main/resources下添加log4j.properties

#log4j
#指定日志级别和日志输出的目的地
log4j.rootLogger=DEBUG, console
#ConsoleAppender说明日志输出的目的地是控制台
log4j.appender.console=org.apache.log4j.ConsoleAppender
#指定输出的样式的类为PatternLayout（灵活）
log4j.appender.console.layout=org.apache.log4j.PatternLayout
#为PatternLayout配置一个灵活的样式 %d(日志输出的时间) %p(日志的级别)  %m(输出代码中指定的消息) %n(回车换行符)
log4j.appender.console.layout.ConversionPattern=%d - %p - %m%n
#   SqlMap   logging   configuration...
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG