Spring Mybatis Mapper模糊查询的几种方法

<select id="findByName" resultType="com.example.YourModel">
  SELECT * FROM your_table
  WHERE name LIKE #{name}
</select>

// 假设有一个Mapper接口方法叫findByName
List<YourModel> results = yourMapper.findByName("%" + name + "%");

<select id="findByName" resultType="com.example.YourModel">
  SELECT * FROM your_table
  WHERE name LIKE CONCAT('%', #{name}, '%')
</select>

<select id="findByName" resultType="com.example.YourModel">
  <bind name="pattern" value="'%' + name + '%'" />
  SELECT * FROM your_table
  WHERE name LIKE #{pattern}
</select>

<select id="findByName" resultType="com.example.YourModel">
  SELECT * FROM your_table
  WHERE name LIKE '%${name}%'
</select>

<select id="findByNameOrEmail" resultType="com.example.YourModel">
  SELECT * FROM your_table
  <where>
    <choose>
      <when test="name != null">
        name LIKE CONCAT('%', #{name}, '%')
      </when>
      <when test="email != null">
        email LIKE CONCAT('%', #{email}, '%')
      </when>
      <otherwise>
        1=1
      </otherwise>
    </choose>
  </where>
</select>

public interface YourMapper {
    List<YourModel> findByName(@Param("name") String name);
}

// 调用Mapper的地方
String searchName = "%" + name + "%";
List<YourModel> result = yourMapper.findByName(searchName);

public interface YourMapper {
    @Select("SELECT * FROM your_table WHERE name LIKE CONCAT('%', #{name}, '%')")
    List<YourModel> findByName(@Param("name") String name);
}