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最近在学习spring boot框架的路上，今日看了一下spring boot日志配置，顺便留个笔记记录一下。
1.新建logback.xml文件
内容如下：
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<!-- logback configuration. see http://logback.qos.ch/manual/ -->
<configuration scan="true" scanperiod="10 seconds">
<include resource="org/springframework/boot/logging/logback/base.xml" />
<appender name="info_file" class="ch.qos.logback.core.rolling.rollingfileappender">
<file>${log_path}/info.log</file>
<rollingpolicy class="ch.qos.logback.core.rolling.timebasedrollingpolicy">
<filenamepattern>${log_path}/info-%d{yyyymmdd}.log.%i</filenamepattern>
<timebasedfilenamingandtriggeringpolicy class="ch.qos.logback.core.rolling.sizeandtimebasedfnatp">
<maxfilesize>500mb</maxfilesize>
</timebasedfilenamingandtriggeringpolicy>
<maxhistory>2</maxhistory>
</rollingpolicy>
<layout class="ch.qos.logback.classic.patternlayout">
<pattern>%d{yyyy-mm-dd hh:mm:ss.sss} [%thread] %-5level %logger{36} -%msg%n
</pattern>
</layout>
</appender>
<appender name="error_file" class="ch.qos.logback.core.rolling.rollingfileappender">
<filter class="ch.qos.logback.classic.filter.thresholdfilter">
<level>error</level>
</filter>
<file>${log_path}/error.log</file>
<rollingpolicy class="ch.qos.logback.core.rolling.timebasedrollingpolicy">
<filenamepattern>${log_path}/error-%d{yyyymmdd}.log.%i
</filenamepattern>
<timebasedfilenamingandtriggeringpolicy class="ch.qos.logback.core.rolling.sizeandtimebasedfnatp">
<maxfilesize>500mb</maxfilesize>
</timebasedfilenamingandtriggeringpolicy>
<maxhistory>2</maxhistory>
</rollingpolicy>
<layout class="ch.qos.logback.classic.patternlayout">
<pattern>%d{yyyy-mm-dd hh:mm:ss.sss} [%thread] %-5level %logger{36} -%msg%n
</pattern>
</layout>
</appender>
<!-- hibernate日志输入 -->
<!-- <logger name="org.hibernate.type.descriptor.sql.basicbinder"
level="trace" />
<logger name="org.hibernate.type.descriptor.sql.basicextractor"
level="trace" />
<logger name="org.hibernate.sql" level="info" />
<logger name="org.hibernate.engine.queryparameters" level="info" />
<logger name="org.hibernate.engine.query.hqlqueryplan" level="info" /> -->
<root level="info">
<appender-ref ref="info_file" />
<appender-ref ref="error_file" />
</root>
</configuration>
2.然后在application.properties文件中假如如下代码：
#log logging.config=classpath:logback.xml logging.path=/workspace/rock/jpa-test/log
3.这时就可以使用log对象了
private final logger log = logger.getlogger(this.getclass());
log.info("你好");
注：由于我的项目在d盘，所以第二步设置的文件路径为：d:/workspace/rock/jpa-test/log
运行程序后，进入路径会有三个文件
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