MyBatis中别名的设置

在sqlMapperConfig中进行设置；

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

DOCTYPE configuration
    PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
     

    <typeAliases>

      
      <typeAlias  alias="Person" type="com.stone.model.Person"/> 
    typeAliases> 

    <environments default="development">
     ...
    environments>
    <mappers>
        ...
    mappers>
configuration>

在personMapper.xml中可以定义sql片段

<sql id="cols">
    id,name,addr,birthday
sql>

<select id="sel">
   select <include refid="cols" /> from person
select>