mybatis批量删除

    @PostMapping("/logicRemove")
    @ResponseBody
    public AjaxResult remove(String ids) {

        return toAjax(dataFieldService.logicDeleteDataFieldByIds(ids));
    
    }

这里的AjaxResult 和 toAjax()只是封装返回的数据，返回值还是1或者0。

    public int logicDeleteDataFieldByIds(String ids) {
        //使用工具类把字符串转换为数组
        String[] strings = Convert.toStrArray(ids);
       
        return dataFieldMapper.logicDeleteDataFieldByIds(strings);

    }

int logicDeleteDataSetByIds(String[] ids);

工具类Convert

public class Convert{

    public static String[] toStrArray(String str){

 return toStrArray(",", str);

 }
　　public static String[] toStrArray(String split, String str){

 　　return str.split(split);
　　}

}

然后在对应的*mapper.xml中编写：

<delete id="logicDeleteDataSetByIds" parameterType="String">

    delete from data_set where id in 
    <foreach item="id" collection="array" open="(" separator="," close=")">
        #{id}
    </foreach>

</delete>

最后：前端传来的数据需要是“1，2，3”这种格式即可；