Logback 在springboot中的使用，打印mybatis的sql语句-马育民老师

# 介绍

springboot默认使用 logback

# logback-spring.xml配置

在springboot中，在 `resources` 文件夹下 创建 `logback-spring.xml` 配置文件，内容如下：

```
<?xml version="1.0" encoding="UTF-8"?>

<configuration scan="true">

<property name="log-dir" value="log" />
	<property name="log-name" value="logFile" />

<appender name="consoleAppender"
		class="ch.qos.logback.core.ConsoleAppender">
		<encoder>
			<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36}:%L- %msg%n</pattern>
			
			<charset class="java.nio.charset.Charset">UTF-8</charset>
		</encoder>
	</appender>

<appender name="fileAppender"
		class="ch.qos.logback.core.rolling.RollingFileAppender">
		
		<file>${log-dir}/${log-name}.log</file>
		
		
		
		
		<rollingPolicy
			class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			
			
			<fileNamePattern>${log-dir}/${log-name}.%d{yyyy-MM-dd}.%i.log
			</fileNamePattern>
			
			
			
			<MaxHistory>
				7
			</MaxHistory>
			
			<timeBasedFileNamingAndTriggeringPolicy
				class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
				<maxFileSize>5MB</maxFileSize>
			</timeBasedFileNamingAndTriggeringPolicy>
		</rollingPolicy>
		<encoder>
			
			<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36}:%L- %msg%n</pattern>
			
			<charset class="java.nio.charset.Charset">UTF-8</charset>
		</encoder>
	</appender>

<root level="info">
		<appender-ref ref="consoleAppender"  />
		<appender-ref ref="fileAppender" />
	</root>
</configuration>
```

### 需要改动

`<logger name="top.malaoshi.mapper" level="debug" />` 改成本工程的 mapper 接口包路径

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