【MyBatis】关于模糊查询的两种处理方法

第一种:在要查的字段后面添加关键字

<!-- 通过姓名和地址查询:方法一 -->
<select id="findByNameAndAddress" resultType="Customer">
select * from customer where name like #{name} and address like #{address}
</select>

测试:
List<Customer> customers = mapper.findByNameAndAddress("%evan%", "%湖南%");
第二种:通过映射

<!-- 通过姓名和地址查询:方法二 -->
<select id="findByNameAndAddress2" resultType="Customer">
<!-- name: c1, address: a1 => -->
<!-- namePattern: %c1%, addressPattern => %a1% -->
<bind name="namePattern" value="'%' + _parameter.name +'%'"/>
<bind name="addressPattern" value="'%' + _parameter.address +'%'"/>
select * from customer where name like #{namePattern} and address like #{addressPattern}
</select>

测试:
List<Customer> customers = mapper.findByNameAndAddress2("evan", "湖南");