java 后台传值ids,数据太多的数据库处理方法

ids值太多, select * from table where id in (ids) 不起作用怎么办
可以把ids拆分成多个部分,例如:select * from table where ( id in (ids1) or id in (ids2) or
id in(ids3)…)

String[] ids

具体代码如下:

    if(ids!=null&&ids.length>0){
        if(ids.length>1000){
            Object[] subAry = StringUtils.splitAry(ids);
            int i=0;
            for(Object obj: subAry){
                i++;
                String[] aryItem = (String[]) obj;
                if(i==1){
                    sqlString += " and ( seq in (:aryItem"+i+") ";
                }else{
                    sqlString += " or seq in (:aryItem"+i+") ";
                }

                parameter.put("aryItem"+i, aryItem);//参数及值,键值对存储
            }
            if(subAry.length>0){
                sqlString += "  )";
            }
        }else{
            sqlString += " and seq in (:ids) ";
            parameter.put("ids", ids);
        }

    }

猜你喜欢

转载自blog.csdn.net/boenwan/article/details/71535577
今日推荐