NetCore+Dapper WebApi架构搭建（二）：底层封装

看下我们上一节搭建的架构，现在开始从事底层的封装

1、首先需要一个实体的接口IEntity

namespace Dinner.Dapper
{
    public interface IEntity<TPrimaryKey>
    {
        TPrimaryKey Id { get; set; }
    }
}

2、由于所有的数据库实体都是有主键的，所以这里定义一个BaseModel，这里我用的主键是Guid，你们可以换成int

using System;

namespace Dinner.Dapper
{
    public class BaseModel : IEntity<Guid>
    {
        public Guid Id { get; set; }
    }
}

3、接下来是封装Dapper的SqlServer配置DataBaseConfig（Redis的配置你们可以忽略）,不要忘记添加Dapper的Nuget包

using StackExchange.Redis;
using System.Data;
using System.Data.SqlClient;

namespace Dinner.Dapper
{
    public class DataBaseConfig
    {
        #region SqlServer链接配置

        private static string DefaultSqlConnectionString = @"Data Source=localhost;Initial Catalog=Dinner;User ID=sa;Password=123456;";
        private static string DefaultRedisString = "localhost, abortConnect=false";
        private static ConnectionMultiplexer redis;

        public static IDbConnection GetSqlConnection(string sqlConnectionString = null)
        {
            if (string.IsNullOrWhiteSpace(sqlConnectionString))
            {
                sqlConnectionString = DefaultSqlConnectionString;
            }
            IDbConnection conn = new SqlConnection(sqlConnectionString);
            conn.Open();
            return conn;
        }

        #endregion

        #region Redis链接配置

        private static ConnectionMultiplexer GetRedis(string redisString = null)
        {
            if (string.IsNullOrWhiteSpace(redisString))
            {
                redisString = DefaultRedisString;
            }
            if (redis == null || redis.IsConnected)
            {
                redis = ConnectionMultiplexer.Connect(redisString);
            }
            return redis;
        }

        #endregion
    }
}

4、然后是仓储基接口IRepositoryBase，添加了基本的增删改查和一个无参的存储过程

using System;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace Dinner.Dapper
{
    public interface IRepositoryBase<T>
    {
        Task Insert(T entity, string insertSql);

        Task Update(T entity, string updateSql);

        Task Delete(Guid Id, string deleteSql);

        Task<List<T>> Select(string selectSql);

        Task<T> Detail(Guid Id, string detailSql);

        /// <summary>
        /// 无参存储过程
        /// </summary>
        /// <param name="SPName"></param>
        /// <param name="args"></param>
        /// <returns></returns>
        Task<List<T>> ExecQuerySP(string SPName);
    }
}

5、仓储基实现类RepositoryBase继承仓储基接口，简单实现增删改查和无参的存储过程

using Dapper;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Threading.Tasks;

namespace Dinner.Dapper
{
    public class RepositoryBase<T> : IRepositoryBase<T>
    {
        public async Task Delete(Guid Id, string deleteSql)
        {
            using (IDbConnection conn = DataBaseConfig.GetSqlConnection())
            {
                await conn.ExecuteAsync(deleteSql, new { Id = Id });
            }
        }

        public async Task<T> Detail(Guid Id, string detailSql)
        {
            using (IDbConnection conn = DataBaseConfig.GetSqlConnection())
            {
                //string querySql = @"SELECT Id, UserName, Password, Gender, Birthday, CreateDate, IsDelete FROM dbo.Users WHERE Id=@Id";
                return await conn.QueryFirstOrDefaultAsync<T>(detailSql, new { Id = Id });
            }
        }

        /// <summary>
        /// 无参存储过程
        /// </summary>
        /// <param name="SPName"></param>
        /// <returns></returns>
        public async Task<List<T>> ExecQuerySP(string SPName)
        {
            using (IDbConnection conn = DataBaseConfig.GetSqlConnection())
            {
                return await Task.Run(() => conn.Query<T>(SPName, null, null, true, null, CommandType.StoredProcedure).ToList());
            }
        }

        public async Task Insert(T entity, string insertSql)
        {
            using (IDbConnection conn = DataBaseConfig.GetSqlConnection())
            {
                await conn.ExecuteAsync(insertSql, entity);
            }
        }

        public async Task<List<T>> Select(string selectSql)
        {
            using (IDbConnection conn = DataBaseConfig.GetSqlConnection())
            {
                //string selectSql = @"SELECT Id, UserName, Password, Gender, Birthday, CreateDate, IsDelete FROM dbo.Users";
                return await Task.Run(()=>conn.Query<T>(selectSql).ToList());
            }
        }

        public async Task Update(T entity, string updateSql)
        {
            using (IDbConnection conn = DataBaseConfig.GetSqlConnection())
            {
                await conn.ExecuteAsync(updateSql, entity);
            }
        }
    }
}

上面这些就是底层基本的封装，下一节我们来添加实体和仓储

源码地址： https://github.com/wangyulong0505/Dinner

来源：https://www.cnblogs.com/wangyulong/p/8961061.html