依赖

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

两种配置log4j的方式：

一定要新建一个log4j.properties文件

在yaml中直接配置
在mybatis-config中配置

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mapper-locations 貌似不管用依旧需要加注解@Mapper

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "
<configuration>
    <settings>
        <!--配置日志格式fhadmin.cn-->
        <setting name="logImpl" value="LOG4J"/>
        <!--开启二级缓存fhadmin.cn-->
        <setting name="cacheEnabled" value="true"/>
    </settings>
</configuration>

log4j.properties文件

#将等级为DEBUG的日志信息输出到console和file这两个目的地，console和file的定义在下面的代码
log4j.rootLogger=DEBUG,console,file
#控制台输出的相关设置 fhadmin.cn
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=[%c]-%m%n
#文件输出的相关设置 fhadmin.cn
log4j.appender.file = org.apache.log4j.RollingFileAppender
log4j.appender.file.File=./log/kai.log
log4j.appender.file.MaxFileSize=10mb
log4j.appender.file.Threshold=DEBUG
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%p][%d{yy-MM-dd}][%c]%m%n
#日志输出级别 fhadmin.cn
log4j.logger.org.mybatis=DEBUG
log4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

如果编译后找不到这两个文件

在pom.xml中加入：

        <resources>
            <!-- 防止找不到mybatis的mapper.xml文件fhadmin.cn，在项目启动时候就导入进去-->
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                    <include>**/*.yaml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>

ITPub博客

Spring Boot mybatis-config 和 log4j 输出sql 日志

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