一、简介
支持日志框架：Java Util Logging, Log4J2 and Logback，默认是使用logback
对于日志的快捷方式：@Slf4j注解
注意：@Slf4j注解需要导入lombok包，pom如下：
<dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency>
对于log的connot resolve symbol log的红叉提示，解决：
1.用快捷键Ctrl+Alt+S打开：Settings→Plugins→Browse repositories
2.输入lom后选择Install，安装插件
logback配置方式
spring boot默认会加载classpath:logback-spring.xml或者classpath:logback-spring.groovy
使用自定义配置文件，配置方式为：
logging.config=classpath:logback-roncoo.xml
注意：不要使用logback这个来命名，否则spring boot将不能完全实例化
logback-spring.xml：
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<!-- 文件输出格式 -->
<property name="PATTERN" value="%-12(%d{yyyy-MM-dd HH:mm:ss.SSS}) |-%-5level [%thread] %c [%L] -| %msg%n" />
<!-- test文件路径 -->
<property name="TEST_FILE_PATH" value="G:/workspace/logs_workspace/hystrix-dashboard/logs" />
<!-- pro文件路径 -->
<property name="PRO_FILE_PATH" value="/opt/hystrix-dashboard/logs" />
<!-- 开发环境 -->
<springProfile name="dev">
<appender name="CONSOLE2" class="ch.qos.logback.classic.net.SMTPAppender">
<smtpHost>smtp.163.com</smtpHost>
<username>发送的@163.com</username>
<password>密码</password>
<to>a1754966750@qq.com</to>
<from>发送的@163.com</from>
<subject>hystrix-dashboard</subject>
<layout class="ch.qos.logback.classic.html.HTMLLayout" >
<pattern>${PATTERN}</pattern>
</layout>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<!--满足结果就写入,不满足结果就拒绝写入 -->
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>${PATTERN}</pattern>
</encoder>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<!--满足结果就写入,不满足结果就拒绝写入 -->
<level>debug</level>
</filter>
</appender>
<logger name="com.example.demo" level="info"/>
<logger name="org.springframework" level="info"/>
<logger name="org.mybatis" level="debug"/>
<logger name="org.apache" level="info"/>
<logger name="org.hibernate" level="info"/>
<logger name="com.netflix" level="info"/>
<root>
<appender-ref ref="CONSOLE2" />
<appender-ref ref="CONSOLE" />
</root>
</springProfile>
<!-- 测试环境 -->
<springProfile name="test">
<!-- 每天产生一个文件 -->
<appender name="TEST-FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<!-- 文件路径 -->
<file>${TEST_FILE_PATH}</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!-- 文件名称 -->
<fileNamePattern>${TEST_FILE_PATH}/info.%d{yyyy-MM-dd}.log</fileNamePattern>
<!-- 文件最大保存历史数量 -->
<MaxHistory>100</MaxHistory>
</rollingPolicy>
<layout class="ch.qos.logback.classic.PatternLayout">
<pattern>${PATTERN}</pattern>
</layout>
</appender>
<root level="info">
<appender-ref ref="TEST-FILE" />
</root>
</springProfile>
<!-- 生产环境 -->
<springProfile name="prod">
<appender name="PROD_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>${PRO_FILE_PATH}</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${PRO_FILE_PATH}/warn.%d{yyyy-MM-dd}.log</fileNamePattern>
<MaxHistory>100</MaxHistory>
</rollingPolicy>
<layout class="ch.qos.logback.classic.PatternLayout">
<pattern>${PATTERN}</pattern>
</layout>
</appender>
<root level="warn">
<appender-ref ref="PROD_FILE" />
</root>
</springProfile>
</configuration>
