[{"createTime":1735734952000,"id":1,"img":"hwy_ms_500_252.jpeg","link":"https://activity.huaweicloud.com/cps.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=V1g3MDY4NTY=&utm_medium=cps&utm_campaign=201905","name":"华为云秒杀","status":9,"txt":"华为云38元秒杀","type":1,"updateTime":1735747411000,"userId":3},{"createTime":1736173885000,"id":2,"img":"txy_480_300.png","link":"https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=edb15096bfff75effaaa8c8bb66138bd&from=console","name":"腾讯云秒杀","status":9,"txt":"腾讯云限量秒杀","type":1,"updateTime":1736173885000,"userId":3},{"createTime":1736177492000,"id":3,"img":"aly_251_140.png","link":"https://www.aliyun.com/minisite/goods?userCode=pwp8kmv3","memo":"","name":"阿里云","status":9,"txt":"阿里云2折起","type":1,"updateTime":1736177492000,"userId":3},{"createTime":1735660800000,"id":4,"img":"vultr_560_300.png","link":"https://www.vultr.com/?ref=9603742-8H","name":"Vultr","status":9,"txt":"Vultr送$100","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":5,"img":"jdy_663_320.jpg","link":"https://3.cn/2ay1-e5t","name":"京东云","status":9,"txt":"京东云特惠专区","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":6,"img":"new_ads.png","link":"https://www.iodraw.com/ads","name":"发布广告","status":9,"txt":"发布广告","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":7,"img":"yun_910_50.png","link":"https://activity.huaweicloud.com/discount_area_v5/index.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=aXhpYW95YW5nOA===&utm_medium=cps&utm_campaign=201905","name":"底部","status":9,"txt":"高性能云服务器2折起","type":2,"updateTime":1735660800000,"userId":3}]
<>QueryRunner（）方法的使用和总结
DBUtils包所提供的QueryRunner类，是针对数据库链接池的使用，一方面解决了数据库访问过多时造成数据库承受的压力，另一方面也简化了数据查询。
<>QueryRunner方法（）;
QueryRunner中一共有6种方法：
•execute（执行SQL语句）
•batch（批量处理语句）
•insert（执行INSERT语句）
•insertBatch（批量处理INSERT语句）
•query（SQL中 SELECT 语句）
•update（SQL中 INSERT, UPDATE, 或 DELETE 语句）(最为常用）
•ArrayHandler：把结果集中的第一行数据转成对象数组。
•ArrayListHandler：把结果集中的每一行数据都转成一个对象数组，再存放到List中。
•BeanHandler：将结果集中的第一行数据封装到一个对应的JavaBean实例中。
•BeanListHandler：将结果集中的每一行数据都封装到一个对应的JavaBean实例中，存放到List里。//重点
•MapHandler：将结果集中的第一行数据封装到一个Map里，key是列名，value就是对应的值。//重点**
•MapListHandler：将结果集中的每一行数据都封装到一个Map里，然后再存放到List
• ColumnListHandler：将结果集中某一列的数据存放到List中。
•KeyedHandler(name)：将结果集中的每一行数据都封装到一个Map里(List)，再把这些map再存到一个map里，其key为指定的列。
ScalarHandler:将结果集第一行的某一列放到某个对象中。//重点
<>//使用BeanListHandler方法：
public static void beanListHandler() throws SQLException{ QueryRunner qr =
new QueryRunner(); String sql = "SELECT * FROM sort"; List<Sort> list =
qr.query(con, sql, new BeanListHandler<Sort>(Sort.class)); for (Sort s : list)
{ System.out.println(s); } }
