MyBatis中if - else if - else 的用法

mybaits 中没有else要用chose when otherwise 代替

<!--批量插入用户-->
<insert id="insertBusinessUserList" parameterType="java.util.List">
    insert into `business_user` (`id` , `user_type` , `user_login` )
    values
    <foreach collection="list" index="index" item="item" separator=",">
        <trim prefix="(" suffix=")" suffixOverrides=",">
            <choose>
                <when test="item.id != null and item.id !=''">
                    #{item.id,jdbcType=CHAR},
                </when>
                <otherwise>
                    '',
                </otherwise>
            </choose>
            <choose>
                <when test="item.userType != null and item.userType !=''">
                    #{item.userType,jdbcType=VARCHAR},
                </when>
                <otherwise>
                    '',
                </otherwise>
            </choose>
        </trim>
    </foreach>
</insert>

多个if -else if -else的使用。

<select id="selectUserByState" resultType="com.bz.model.entity.User">
    SELECT
      *
    FROM
      user
    WHERE
      1=1
    <choose>
      <when test="state == 1">
        AND name = #{name1}
      </when>
     <when test="state == 2">
        AND name = #{name2}
      </when>
      <otherwise>
        AND name = #{name3}
      </otherwise>
    </choose>
  </select>