时间：2022-05-21 10:49:18 | 栏目：JAVA代码 | 点击：次
动态参数拼接的查询语句
?C传入参数类型为自定义数据类型
<select id="queryMessageList" parameterType="com.imooc.bean.Message"
resultMap="MessageResult">
select ID,COMMAND,DESCRIPTION,CONTENT from MESSAGE where 1=1
<if test="command !=null &&!"".equals(command.trim())">
and COMMAND=#{command}
</if>
<if test="description != null and !"".equals(description.trim())">
and DESCRIPTION like '%' #{description} '%'
</if>
</select>
删除单条数据
?C传入参数类型为String与基本数据类型
<delete id="deleteOne" parameterType="int">
delete from MESSAGE WHERE ID = #{_parameter}
</delete>
删除多条数据
?C传入参数类型为List
<delete id="deleteBatch" parameterType="java.util.List">
delete from MESSAGE WHERE ID in (
<foreach collection="list" item="item" separator=",">
#{item}
</foreach>
)
</delete>
以上所述是小编给大家介绍的Mybaits配置文件之动态SQL配置备忘录，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的！