sqlSugar 简单封装及使用案例
2021/7/22 2:08:54
本文主要是介绍sqlSugar 简单封装及使用案例,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
十年河东,十年河西,莫欺少年穷
学无止境,精益求精
近几天,老家河南遭受了近百年一遇的大暴雨,城市内涝严重,希望家乡人挺住,全国人民期待河南尽快好起来,天空放晴。
在此,仅以一篇郑州地铁五号线遭受暴雨侵袭的帖子作为记录。
一个女孩子写在死里逃生后:
今天郑州暴雨,下午四点物业通知要停电所以需要尽快下班,我和同事下楼后发现门口积水已到膝盖,同事说硬着头皮过吧,我犹豫了一下不敢过,所以没有过去,又等了一个多小时终究还是不想在公司留宿,还是淌着到大腿的水过去了,刚坐上地铁以为噩梦结束了,结果地铁刚过了一站,开往第二站的时候就停在中间了!走不动了,车厢就开始慢慢的往里渗水,但是还不太多,我们就在等怎么办?所有人都傻了,后来地铁的工作人员安排我们慢慢撤离,刚走了没多远,又要求我们回去,因为前方的水全部漫过来了,等全部人员上车后车厢的水已经到腰部了,可是噩梦还没有结束,车外面的水一直在涨,也一直在从门缝里往里渗着,慢慢的水越来越多,我们能站在座位上都站在座位上,最后站在座位上水都到胸口了,我真的害怕了,可是最恐怖的不是水而是车厢里的空气越来越少,好多人都出现了呼吸困难的症状,我听到一个阿姨给家人交代银行卡号,交代家里的事情,我想我是不是也要交代一下呢?当时想联系的人很多,想说的事情也很多,但是最后都没有说出口,只能妈妈发了一句,妈妈我可能快不行了,我有点害怕,但是妈妈回过来电话我也不知道说啥,只说还在等救援,就挂了。从六点到八点半一直都处在崩溃的边缘,慢慢的也不用崩溃了,因为我也因为缺氧晕倒了,就在这个时候我妈妈给我打个电话,手机的震动叫醒了我,和妈妈说了两句,有个救援队的叔叔联系上了,我告诉他我们缺氧快不能呼吸了,叔叔说救援队都到了正在想办法,就在这个时候车顶传来了救命的脚步声,有人来了,消防队的叔叔在使劲的砸车厢的玻璃,一下两下无数下,终于砸开了两扇玻璃,有空气了,我们可以恢复呼吸了!然后就听到车厢前面传来越来越多的声音,救援队终于来了,真正遇到生死的时刻才更能体现人性的美好,这么长时间肯定有很多人熬不住了,到处可以听见互相安慰的声音,有获救的机会了,每个人都在喊着让晕倒的人先走,两个男生架着一个晕倒的人,每个人都上去扶一把,把每个晕倒的人都先救出去,然后所有的男生说女生先走,然后男生真的站在两边等着让女生先走,即使是情侣都放开了彼此的手,让女生先走,男生们在后面一个拉着一个女生走,我头晕走不动了,不过停在哪里,不管男生女生都会说一句,你靠着我就可以,看看好多男生和消防员叔叔一直泡在水里,接应一个又一个女生出去,真的是觉得很庆幸,生在华夏生在一个有爱的国度,遇到善良可爱的人,这是我有生以来第一次离死亡那么近,原来只是嘴上说说谁知道明天和意外哪个先来,这次真的是遇到了,原来意外真的会来,真的是害怕了,如果今天真的出不来了,我会很后悔,后悔有太多的事情没有做,后悔太多人没有见,再也不能吃我最爱的麻辣火锅了,更后悔没有和爸爸妈妈奶奶弟弟说句我爱你们,死里逃生后这种感觉更加深刻,既然幸运的我活下来了,那么以后一定要好好的享受生活,好好的珍惜眼前的人和事!好多人发信息关心我,十万分的感谢大家!谢谢!!
好了,祝福河南好起来的同时,我们也进入正题,Sugar的简单封装
新建一个类库,增加类:SugarDbContext
![](/images/baidian.png)
using SqlSugar; using System; using System.Linq; namespace AppSugarContext { public class SugarDbContext { /// 获取连接字符串 // private static string Connection = ConfigCommon.Get("WuAnDBContext"); private static string Connection = "Data Source=58.211.23.172;Initial Catalog=WuAnDBPrd2;Password=mk2XA5+#;User ID=sa;"; public SugarDbContext() { Db = new SqlSugarClient(new ConnectionConfig() { ConnectionString = Connection, DbType = DbType.SqlServer, InitKeyType = InitKeyType.Attribute,//从特性读取主键和自增列信息 IsAutoCloseConnection = true,//开启自动释放模式和EF原理一样我就不多解释了 }); //调式代码 用来打印SQL Db.Aop.OnLogExecuting = (sql, pars) => { Console.WriteLine(sql + "\r\n" + Db.Utilities.SerializeObject(pars.ToDictionary(it => it.ParameterName, it => it.Value))); Console.WriteLine(); }; } //注意:不能写成静态的 public SqlSugarClient Db;//用来处理事务多表查询和复杂的操作 } }View Code
需要引入Sugar和Json 两个包
然后,我们封装sqlSuagr的一些常用方法,如下:
![](/images/baidian.png)
using appDataInterface; using appModel; using AppSugarContext; using SqlSugar; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace appDataService { public class DataRepository { public static SugarDbContext sugar = new SugarDbContext(); public static string NewGuid() { return Guid.NewGuid().ToString("N"); } /// <summary> /// 获取返回的列表 /// </summary> /// <typeparam name="U"></typeparam> /// <param name="sql"></param> /// <param name="orderby"></param> /// <returns></returns> public static List<U> GetListBySql<U>(string sql, string orderby = "") where U : class, new() { List<U> result = null; using (var db = sugar.Db) { if (string.IsNullOrEmpty(orderby)) { result = db.SqlQueryable<U>(sql).ToList(); } else { result = db.SqlQueryable<U>(sql).OrderBy(orderby).ToList(); } } return result; } /// <summary> /// 获取返回的列表-参数化 /// </summary> /// <typeparam name="U"></typeparam> /// <param name="sql"></param> /// <param name="where"></param> /// <param name="parameters"></param> /// <returns></returns> public static List<U> GetListBySql<U>(string sql, string where, object parameters) where U : class, new() { List<U> result = null; using (var db = sugar.Db) { result = db.SqlQueryable<U>(sql).Where(where, parameters).ToList(); } return result; } /// <summary> /// 获取DbSet 第一行 /// </summary> /// <typeparam name="U"></typeparam> /// <param name="sql"></param> /// <returns></returns> public static U GetOneBySql<U>(string sql) where U : class, new() { U result = null; using (var db = sugar.Db) { result = db.SqlQueryable<U>(sql).First(); } return result; } /// <summary> /// 获取第一行第一列的值 并转化为Int /// </summary> /// <param name="sql"></param> /// <returns></returns> public static int GetInt(string sql) { using (var db = sugar.Db) { return db.Ado.GetInt(sql); } } /// <summary> /// 获取第一行第一列的值 并转化为Double /// </summary> /// <param name="sql"></param> /// <returns></returns> public static double GetDouble(string sql) { using (var db = sugar.Db) { return db.Ado.GetDouble(sql); } } /// <summary> /// SQL 分页 /// </summary> /// <typeparam name="E">返回值对象</typeparam> /// <typeparam name="U">查询类,继承自PaginationModel</typeparam> /// <param name="sql">sql</param> /// <param name="OrderBy">排序</param> /// <param name="u">查询对象,继承自PaginationModel</param> /// <returns></returns> public static PaginationListModel<E> PageQuery<E, U>(string sql, string OrderBy, U u) where U : PaginationModel where E : class, new() { var db = sugar.Db; int total = 0; List<E> list = null; if (string.IsNullOrEmpty(OrderBy)) { list = db.SqlQueryable<E>(sql).ToPageList(u.pageNumber, u.pageSize, ref total); } else { list = db.SqlQueryable<E>(sql).OrderBy(OrderBy).ToPageList(u.pageNumber, u.pageSize, ref total); } return new PaginationListModel<E>() { data = list, pagination = new BasePaginationModel() { pageNumber = u.pageNumber, pageSize = u.pageSize, total = total } }; } /// <summary> /// SQL 分页 参数化 /// </summary> /// <typeparam name="E"></typeparam> /// <typeparam name="U"></typeparam> /// <param name="sql"></param> /// <param name="OrderBy"></param> /// <param name="u"></param> /// <param name="where"></param> /// <param name="parameters"></param> /// <returns></returns> public static PaginationListModel<E> PageQuery<E, U>(string sql, string OrderBy, U u, string where, object parameters) where U : PaginationModel where E : class, new() { if (parameters == null) { return PageQuery<E, U>(sql, OrderBy, u); } var db = sugar.Db; int total = 0; List<E> list = null; if (string.IsNullOrEmpty(OrderBy)) { list = db.SqlQueryable<E>(sql).Where(where, parameters).ToPageList(u.pageNumber, u.pageSize, ref total); } else { list = db.SqlQueryable<E>(sql).Where(where, parameters).OrderBy(OrderBy).ToPageList(u.pageNumber, u.pageSize, ref total); } return new PaginationListModel<E>() { data = list, pagination = new BasePaginationModel() { pageNumber = u.pageNumber, pageSize = u.pageSize, total = total } }; } /// <summary> /// 执行Sql 查询单个实体 /// </summary> /// <typeparam name="E"></typeparam> /// <typeparam name="U"></typeparam> /// <param name="sql"></param> /// <param name="OrderBy"></param> /// <param name="u"></param> /// <returns></returns> public static E PageOne<E>(string sql) where E : class, new() { var db = sugar.Db; var one = db.SqlQueryable<E>(sql).ToList().FirstOrDefault(); return one; } /// <summary> /// 查询结果List的第一条记录 /// </summary> /// <typeparam name="E"></typeparam> /// <param name="sql"></param> /// <param name="where"></param> /// <param name="parameters"></param> /// <returns></returns> public static E PageOne<E>(string sql, string where, object parameters) where E : class, new() { if (parameters == null) { return PageOne<E>(sql); } var db = sugar.Db; var one = db.SqlQueryable<E>(sql).Where(where, parameters).ToList().FirstOrDefault(); return one; } /// <summary> /// 第一行第一列 /// </summary> /// <param name="sql"></param> /// <param name="parameters"></param> /// <returns></returns> public static object ExecuteScalar(string sql, object parameters = null) { using (var db = sugar.Db) { return db.Ado.GetScalar(sql, parameters); } } /// <summary> /// 第一行第一列 /// </summary> public static object ExecuteScalar(string sql) { using (var db = sugar.Db) { return db.Ado.GetScalar(sql); } } /// <summary> /// 第一行第一列 - 异步 /// </summary> public static async Task<object> ExecuteScalarAsync(string sql, object parameters = null) { using (var db = sugar.Db) { return await db.Ado.GetScalarAsync(sql, parameters); } } /// <summary> /// 第一行第一列 - 异步 /// </summary> public static async Task<object> ExecuteScalarAsync(string sql) { using (var db = sugar.Db) { return await db.Ado.GetScalarAsync(sql); } } public static E GetOneBySql<E>(string sql, object parameters = null) where E : class { using (var db = sugar.Db) { return db.Ado.SqlQuerySingle<E>(sql, parameters); } } /// <summary> /// 第一行第一列 - 异步 /// </summary> public static async Task<E> GetOneBySqlAsync<E>(string sql, object parameters = null) where E : class { using (var db = sugar.Db) { return await db.Ado.SqlQuerySingleAsync<E>(sql, parameters); } } public static List<E> GetBySql<E>(string sql, object parameters = null) where E : class { using (var db = sugar.Db) { return db.Ado.SqlQuery<E>(sql, parameters); } } public static async Task<List<E>> GetBySqlAsync<E>(string sql, object parameters = null) where E : class { using (var db = sugar.Db) { return await db.Ado.SqlQueryAsync<E>(sql, parameters); } } } }View Code
引用:System.Data.SqlClient
调用我们封装的方法,如下:
![](/images/baidian.png)
public GetEvseInfoModel GetEvseInfo() { string sql = string.Format(@"select * from A left join B on A.GroupID=B.uid where EVSENo ='{0}'", "11212174714143316"); var Info = DataRepository.PageOne<GetEvseInfoModel>(sql); return Info; } public PaginationListModel<DeliveryCarEntitys> GetCarEntities(SearchCarParam searchaParam) { string sql = string.Format(@"SELECT * FROM [dbo].[DeliveryCar] d WHERE 1=1 "); return DataRepository.PageQuery<DeliveryCarEntitys, SearchCarParam>(sql, " AddTime desc", searchaParam); } public PaginationListModel<DeliveryCarEntitys> GetCarEntities_param(SearchCarParam searchaParam) { string sql = string.Format(@"SELECT * FROM [dbo].[DeliveryCar] d "); var where = "1=1 and FrameNo = @FrameNo"; var para = new { FrameNo = "112" // }; return DataRepository.PageQuery<DeliveryCarEntitys, SearchCarParam>(sql, "AddTime desc", searchaParam, where, para); } public async Task<int> GetCabinetCount(SearchStatistic data, CurrentUserData CurrentUser) { string sql = @"select count(1) from A "; #region 数据权限 if (!CurrentUser.IsAdmin) { sql += " and B.SystemID=@UserSystemID"; } #endregion if (!string.IsNullOrEmpty(data.systemId)) { sql += " and B.SystemID=@SystemID"; } if (data.GroupId.HasValue) { sql += " and A.GroupId=@GroupId"; } if (!string.IsNullOrEmpty(data.StationStoreId)) { sql += " and (A.StationID=@StationStoreId or A.StoreId=@StationStoreId)"; } var para = new { UserSystemID = CurrentUser.userLoginToken.SystemID, SystemID = data.systemId, GroupId = data.GroupId, StationStoreId = data.StationStoreId }; var Obj = await ExecuteScalarAsync(sql, para); if (Obj != null) return Convert.ToInt32(Obj); return 0; } public DeliveryCarEntity GetDetail(string uid) { var sql = $@"select {GetFieldsStr("c")},s.GroupId as StoreGroupId from {nameof(DeliveryCar)} as c with(nolock) left join {nameof(SysStoreInfo)} as s with(nolock) on s.uid = c.StoreId where c.uid = @uid"; return GetOneBySql<DeliveryCarEntity>(sql, new { uid }); } public async Task<ChangeApiPageInfo> GetFirstPageBatteryInfo(CurrentWeChatUser CurrentUser) { var bol = context.Cmcustomer.Any(A => A.Uid == CurrentUser.customerId && A.HasAgreed); if (!bol) { return new ChangeApiPageInfo() { HasAgreed = false }; } string sql = @"select * from baty inner join mat on mat.Skuno=baty.MaterialNo left join cus on cus.Uid= baty.customerId where CustomerID=@CustomerID "; var paras = new { CustomerID = CurrentUser.customerId }; return await GetOneBySqlAsync<ChangeApiPageInfo>(sql, paras); } public bool HasIot(string batteryNo) { var one = PageOne<GenericObject<bool>>($@"select b.BatteryNo, m.HasIoT from BaseBattery b inner join MaterialBattery m on b.MaterialNo=m.SKUNo", "BatteryNo=@BatteryNo", new { BatteryNo = batteryNo }); return one != null && one.Value; }View Code
@天才卧龙的博客
这篇关于sqlSugar 简单封装及使用案例的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!
- 2024-09-28微服务架构中API版本控制的实践
- 2024-09-28AI给的和自己写的Python代码,都无法改变输入框的内容,替换也不行
- 2024-09-27Sentinel配置限流资料:新手入门教程
- 2024-09-27Sentinel配置限流资料详解
- 2024-09-27Sentinel限流资料:新手入门教程
- 2024-09-26Sentinel限流资料入门详解
- 2024-09-26Springboot框架资料:初学者入门教程
- 2024-09-26Springboot框架资料详解:新手入门教程
- 2024-09-26Springboot企业级开发资料:新手入门指南
- 2024-09-26SpringBoot企业级开发资料新手指南