第一步 去掉 相关依赖

<exclusions><exclusion><artifactId>jcl-over-slf4j</artifactId><groupId>org.slf4j</groupId></exclusion></exclusions>第二步 commons-logging.properties 里增加 org.apache.commons.logging.Log = org.apache.commons.logging.impl.Log4JLoggerorg.apache.commons.logging.LogFactory=org.apache.commons.logging.impl.LogFactoryImpl第三步log4j.properties增加 log4j.rootLogger=ERROR, stdout#log4j.rootCategory=ERROR, stdout , Rlog4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %t %c{2}:%L - %m%n

再说点======================================

查看使用的LOG方法

public class Test {private static final Log LOG = LogFactory.getLog(Test.class);    public static void main(String[] args) {        System.out.println("log:" + LOG);        LOG.trace("我是trace信息");        LOG.debug("我是debug信息");        LOG.info("我是info信息");        LOG.warn("我是warn信息");        LOG.error("我是error信息");        LOG.fatal("我是fatal信息");            }    }