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動(dòng)態(tài)參數(shù)拼接的查詢(xún)語(yǔ)句

–傳入?yún)?shù)類(lèi)型為自定義數(shù)據(jù)類(lèi)型

									<select id="queryMessageList" parameterType="com.imooc.bean.Message"

									    resultMap="MessageResult">

									    select ID,COMMAND,DESCRIPTION,CONTENT from MESSAGE where 1=1

									    <if test="command !=null &amp;&amp;!&quot;&quot;.equals(command.trim())">

									      and COMMAND=#{command}

									    </if>

									    <if test="description != null and !&quot;&quot;.equals(description.trim())">

									      and DESCRIPTION like '%' #{description} '%'

									    </if>

									  </select>

刪除單條數(shù)據(jù)

–傳入?yún)?shù)類(lèi)型為String與基本數(shù)據(jù)類(lèi)型

									<delete id="deleteOne" parameterType="int">

									    delete from MESSAGE WHERE ID = #{_parameter}

									</delete>

刪除多條數(shù)據(jù)

–傳入?yún)?shù)類(lèi)型為L(zhǎng)ist

									<delete id="deleteBatch" parameterType="java.util.List">

									  delete from MESSAGE WHERE ID in (

									  <foreach collection="list" item="item" separator=",">

									    #{item}

									  </foreach>

									  )

									</delete>