IDEA 创建xml文件

1.File->Setting->Editor->File and Code Templates

2.点击加号 Name：XML File ,Extension：xml(注意不要加.)

输入内容：

<?xml version="1.0" encoding="UTF-8" ?> 
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<configuration> 

</configuration>