slf4j是java中常用的日志框架，有许多具体实现，比如slf4j-simple等。
<dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.26</version> <scope>compile</scope> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-simple</artifactId> <version>1.7.26</version> </dependency>
在java同级目录下，增加 resources 目录，在其下新建文件 simplelogger.properties. 可以配置打印日志的时间戳等信息。
<!-- lang: java --> #DEFAULT_LOG_LEVEL_KEY = org.slf4j.simpleLogger.defaultLogLevel #SHOW_DATE_TIME_KEY = org.slf4j.simpleLogger.showDateTime #DATE_TIME_FORMAT_KEY = org.slf4j.simpleLogger.dateTimeFormat #SHOW_THREAD_NAME_KEY = org.slf4j.simpleLogger.showThreadName #SHOW_LOG_NAME_KEY = org.slf4j.simpleLogger.showLogName #SHOW_SHORT_LOG_NAME_KEY = org.slf4j.simpleLogger.showShortLogName #LOG_FILE_KEY = org.slf4j.simpleLogger.logFile #LEVEL_IN_BRACKETS_KEY = org.slf4j.simpleLogger.levelInBrackets #WARN_LEVEL_STRING_KEY = org.slf4j.simpleLogger.warnLevelString org.slf4j.simpleLogger.showDateTime = true org.slf4j.simpleLogger.dateTimeFormat = HH:mm:ss:SSSS
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public Class ExampleForLog {
private Logger logger = LoggerFactory.getLogger(AndroidBaseCase.class);
logger.info("xxx"); //输出：
}
原文：https://www.cnblogs.com/sunada2005/p/15151903.html