基于sqlsugar多数据库链接帮助库

包达叔2026-08-09 7:22
基于sqlsugar多数据库链接帮助库
csharp 复制代码
using System.Linq;

namespace xk3hub.Core;

/// <summary>
/// 数据库连接工厂（根据 ConfigId 动态获取数据库连接）
/// </summary>
public static class DbHelper
{
    /*
    查询DataTable举例:  
    string sql = "SELECT * FROM table aa WHERE aa.Id = @Id"; 
    var param = new SugarParameter("@Id", 11111);
    DataTable dt = BTMS.Ado.GetDataTable(sql, param);

    查询对象举例: 
    string sql = "SELECT * FROM table aa WHERE aa.Id = @Id"; 
    var param = new SugarParameter("@Id", 11111);
    string jiuZhenId = DbHelper.BTMS.Ado.SqlQuery<string>(sql, param).FirstOrDefault();
   */

    private static readonly Dictionary<string, SqlSugarScope> _dbCache = new();
    private static readonly object _lock = new();

    public static SqlSugarScope BTMS => GetDb("default"); // 血库3

    public static SqlSugarScope XueZhan => GetDb("xueZhan"); // 血站

    public static SqlSugarScope His => GetDb("his");

    public static SqlSugarScope Lis => GetDb("lis"); 

    /// <summary>
    /// 根据 ConfigId 获取数据库连接
    /// </summary>
    /// <param name="configId">数据库配置标识，为空时使用默认业务库 "yewu"</param>
    /// <returns>SqlSugarScope 实例</returns>
    private static SqlSugarScope GetDb(string configId = null)
    {
        // 默认使用业务库
        configId ??= "default";

        // 检查缓存
        if (_dbCache.TryGetValue(configId, out var cachedDb))
        {
            return cachedDb;
        }

        lock (_lock)
        {
            if (_dbCache.TryGetValue(configId, out cachedDb))
            {
                return cachedDb;
            }

            // 创建新的数据库连接
            var db = CreateDbInstance(configId);
            _dbCache[configId] = db;
            return db;
        }
    }

    /// <summary>
    /// 创建数据库实例
    /// </summary>
    private static SqlSugarScope CreateDbInstance(string configId)
    {
        var dbOptions = App.GetConfig<List<ConnectionConfig>>("ConnectionConfigs");
        var config = dbOptions.FirstOrDefault(c =>
            configId.ToLower() == c.ConfigId.ToString().ToLower());

        if (config == null)
        {
            throw OopsEx.Oh($"未找到 ConfigId 为 '{configId}' 的数据库配置");
        }

        return new SqlSugarScope(new ConnectionConfig
        {
            ConnectionString = config.ConnectionString,
            DbType = config.DbType,
            IsAutoCloseConnection = true,
            InitKeyType = InitKeyType.Attribute,
            LanguageType = LanguageType.Chinese,
        });
    }



}