方法一：忽略parameterType，加@param("xxx")注解

在mapper接口中加上@param("xxx")注解，則在配置文件中直接用即可

List<Map<String, Object>> getDataByTime(@Param("startTime") String startTime, @Param("endTime") String endTime, @Param("platformId") Long platformId); <select id="getDataByTime" resultType="java.util.Map">SELECTt.seller_id as sellerId,sum(t.payment_price) as total,FROMtrade_orders tWHEREANDt.platform_id = #{platformId}<if test="startTime != null and startTime != ''">AND<![CDATA[t.order_time >= #{startTime}]]></if><if test="endTime != null and endTime != ''">AND<![CDATA[t.order_time <= #{endTime}]]></if>GROUP BYt.seller_id</select>

方法二：忽略parameterType，不加@param("xxx")注解

用#｛index｝，是第幾個就用第幾個的索引，索引從0開始

List<Map<String, Object>> getDataByTime(String startTime, String endTime, Long platformId); <select id="getDataByTime" resultType="java.util.Map">SELECTt.seller_id as sellerId,sum(t.payment_price) as total,FROMtrade_orders tWHEREANDt.platform_id = #{3}<if test="startTime != null and startTime != ''">AND<![CDATA[t.order_time >= #{0}]]></if><if test="endTime != null and endTime != ''">AND<![CDATA[t.order_time <= #{1}]]></if>GROUP BYt.seller_id</select>

方法三：使用Map封裝參數，parameterType=“hashmap”

封裝好后，直接在配置文件引用#{key}即可

List<Map<String, Object>> getDataByTime(HashMap map); <select id="getDataByTime" parameterType="hashmap" resultType="java.util.Map">SELECTt.seller_id as sellerId,sum(t.payment_price) as total,FROMtrade_orders tWHEREANDt.platform_id = #{platformId}<if test="startTime != null and startTime != ''">AND<![CDATA[t.order_time >= #{startTime}]]></if><if test="endTime != null and endTime != ''">AND<![CDATA[t.order_time <= #{endTime}]]></if>GROUP BYt.seller_id</select>

方法四：使用List封裝參數

mapper配置文件使用foreach標簽循環list

List<Map<String, Object>> getDataByTime(List<String> list); <select id="getXXXBeanList" resultType="java.util.Map">select XX from trade_orders where id in<foreach item="item" index="index" collection="list" open="(" separator="," close=")"> #{item} </foreach> </select>

轉載于:https://www.cnblogs.com/kobelieve/p/10490635.html

總結

以上是生活随笔為你收集整理的mybatis中mapper接口的参数设置几种方法的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。