demo
引入pom
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</dependency>
在类中引入日志,并使用它
private static final Logger log = LoggerFactory.getLogger(paralleStreamTest.class);
log.info("苹果数量:{}个, 耗时:{}s", appleList.size(), (end.getTime() - begin.getTime()) /1000);
logback与spring整合配置文件
<configuration>
<property name="LOG_PATTERN"
value="%d{yyyy-MM-dd HH:mm:ss.SSS} %level [%thread] %class:%line - %msg%n"/>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>${LOG_PATTERN}</pattern>
</encoder>
</appender>
<root level="DEBUG">
<appender-ref ref="STDOUT"/>
</root>
</configuration>