JAVA批量删除

java中批量删除|sql解决
mapper层接口：

public int deleteTrainClassByIds(Long[] classIds);

对应的sql语句：

<update id="deleteTrainClassByIds" parameterType="String">
        update train_class
        <trim prefix="SET" suffixOverrides=",">
            is_delete='2'
        </trim>
        where class_id in
        <foreach item="classId" collection="array" open="(" separator="," close=")">
            #{classId}
        </foreach>
        and is_delete='1'
    </update>

server层接口:

public int deleteTrainClassByIds(Long[] classIds);

serverImpl实现类:

public int deleteTrainClassByIds(Long[] classIds) {
        return trainClassMapper.deleteTrainClassByIds(classIds);
    }

controller层代码

public AjaxResult remove(@PathVariable Long[] classIds) {
        return toAjax(trainClassService.deleteTrainClassByIds(classIds));
    }