Mybaits配置文件之动态SQL配置备忘录

<select id="queryMessageList" parameterType="com.imooc.bean.Message"    resultMap="MessageResult">    select ID,COMMAND,DESCRIPTION,CONTENT from MESSAGE where 1=1    <if test="command !=null &&!"".equals(command.trim())">      and COMMAND=#{command}    </if>    <if test="description != null and !"".equals(description.trim())">      and DESCRIPTION like '%' #{description} '%'    </if>  </select>

<delete id="deleteOne" parameterType="int">    delete from MESSAGE WHERE ID = #{_parameter}</delete>

  <delete id="deleteBatch" parameterType="java.util.List">    delete from MESSAGE WHERE ID in (    <foreach collection="list" item="item" separator=",">      #{item}    </foreach>    )  </delete>