xujie-internal-java/src/main/resources/mapper/customer/CustomerMapper.xml

<?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">
<mapper namespace="com.gaotao.modules.customer.mapper.CustomerMapper">

    <select id="findAll" resultType="com.gaotao.modules.customer.entity.Customer">
        SELECT * FROM customer
        <where>
            <if test="query.customerName != null and query.customerName != ''">
                customer_name like '%' + #{query.customerName} + '%'
            </if>
        </where>
        order by entered_date desc
    </select>
</mapper>