1、下载xsd文件
2、idea添加xsd文件
URI：http://mybatis.org/dtd/mybatis-3-mapper.dtd
File：D:/env/plugins/mybatis/mybatis-3-mapper.dtd
2、在logback.xml中
<?xml version="1.0" encoding="UTF-8"?> <configuration xmlns="http://ch.qos.logback/xml/ns/logback" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://ch.qos.logback/xml/ns/logback https://raw.githubusercontent.com/enricopulatzo/logback-XSD/master/src/main/xsd/logback.xsd">
原文：https://www.cnblogs.com/yaoyuan2/p/11614618.html