mysql 批量查询

//        for (Map m : rangeList) {
//            String str = m.get("value").toString();
//            String value;
//            if (str.contains(",")) {
//                List list = Arrays.asList(str.split(","));
//                value = getValue(list);
//                m.put("value", value);
//            }
//        }

Impl ----->>

private String getValue(List list) {
    Map map = tbHospitalMapper.selectByIds(list);
    return map.get("name").toString();
}

Mapper-------->>

Map selectByIds(List list);


Xml--------->>

    SELECT
    IFNULL(GROUP_CONCAT(name) ,'') name
    from tb_hospital
    where id in
                 separator="," close=")">
        #{item}
    

转载于:https://www.cnblogs.com/guagua-join-1/p/10936011.html