mybatis做like模糊查询

这个网站中有很多方法。https://code.google.com/p/mybatis/issues/detail?id=85

自己试验了如下的方法。

1. 参数中直接加入%%

param.setUsername("%CD%");
param.setPassword("%11%");

    <select  id="selectPersons" resultType="person" parameterType="person">
        select id,sex,age,username,password from person where true 
            <if test="username!=null"> AND username LIKE #{username}</if>
            <if test="password!=null">AND password LIKE #{password}</if>
    
    </select>

2. bind标签

<select id="selectPersons" resultType="person" parameterType="person">
  <bind name="pattern" value="'%' + _parameter.username + '%'" />
  select id,sex,age,username,password 
  from person
  where username LIKE #{pattern}
</select>

3. CONCAT

where username LIKE concat(cancat('%',#{username}),'%')

where username LIKE concat('%',#{username},'%')

http://www.cnblogs.com/cyttina/p/3894428.html