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api_v1/Appointment.Entity/Utility/BaseConfig.cs

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+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Configuration.Json;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Appointment.Entity
+{
+    public class BaseConfig
+    {
+        /// <summary>
+        /// 缓存配置文件
+        /// </summary>
+        static IConfiguration configuration { get; set; }
+
+        static BaseConfig()
+        {
+            /* 当配置文件更新后，IConfiguration会自动更新，使用缓存为了双重保障 */
+            DateTime now = DateTime.Now;
+            if (validTime < now)
+            {
+                string path = "appsettings.json";
+                var _newCreateTime = System.IO.File.GetCreationTime(path);
+                if (_newCreateTime != createTime)
+                {
+                    configuration = new ConfigurationBuilder()
+                        .Add(new JsonConfigurationSource
+                        {
+                            Path = path,
+                            Optional = false,
+                            ReloadOnChange = true
+                        }).Build();
+                    createTime = _newCreateTime;
+                }
+                validTime = now.AddSeconds(60);
+            }
+        }
+
+        /// <summary>
+        /// 缓存配置文件创建时间
+        /// </summary>
+        static DateTime createTime;
+
+        /// <summary>
+        /// 缓存配置文件失效时间
+        /// </summary>
+        static DateTime validTime;
+
+        /// <summary>
+        /// 获取配置信息(必项)
+        /// </summary>
+        /// <param name="sections"></param>
+        /// <returns>当不存在或为空是输出异常</returns>
+        public static string App(params string[] sections)
+        {
+            try
+            {
+                if (sections.Any())
+                {
+                    string str = configuration[string.Join(":", sections)];
+                    if (!string.IsNullOrEmpty(str))
+                    {
+                        return str;
+                    }
+                }
+                throw new Exception($"没有在配置文件中的appSettings中找到{sections.Last()}的配置，请检查配置文件配置！");
+            }
+            catch (Exception ex)
+            {
+                throw new Exception(ex.Message);
+            }
+        }
+
+        /// <summary>
+        /// 获取配置文件
+        /// </summary>
+        /// <param name="sections"></param>
+        /// <param name="defaultValue">默认返回值</param>
+        /// <returns>当不存在的配置项会返回null</returns>
+        /// <remarks>
+        /// 获取实例:
+        /// BaseConfig.App(new string[] { "Logging" });
+        /// BaseConfig.App(new string[] { "Logging", "LogLevel" });
+        /// </remarks>
+        public static string App(string[] sections, string defaultValue)
+        {
+            try
+            {
+                if (sections.Any())
+                {
+                    string stre = configuration[string.Join(":", sections)];
+
+                    if (!string.IsNullOrEmpty(stre)) return stre;
+                }
+                return defaultValue;
+            }
+            catch (Exception)
+            {
+                return defaultValue;
+            }
+        }
+
+        /// <summary>
+        /// 递归获取配置信息数组
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="sections"></param>
+        /// <returns></returns>
+        public static List<T> App<T>(params string[] sections)
+        {
+            List<T> list = new List<T>();
+            configuration.Bind(string.Join(":", sections), list);
+            return list;
+        }
+    }
+}