86 lines
2.9 KiB
C#
86 lines
2.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.IO;
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using System.Reflection;
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using XKRS.Common.Model.Helper;
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namespace XKRS.Common.Factory
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{
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public static class FactoryHelper
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{
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const string DLLPATTERN = "XKRS.*.dll";
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//readonly指示只能在声明期间或在同一个类的构造函数中向字段赋值
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//可以在字段声明和构造函数中多次分配和重新分配只读字段。
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//构造函数退出后，不能分配 readonly 字段。
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private static readonly string[] DLLPATTERNS = { "XKRS." };
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private static List<Type> types = new List<Type>();
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public static List<Type> TYPES
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{
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get
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{
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if (types.Count <= 0)
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{
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types = GetAttributeType<DeviceAttribute>().Values.ToList();
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}
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return types;
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}
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}
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public static Dictionary<T, Type> GetAttributeType<T>() where T : Attribute
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{
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Dictionary<T, Type> attrTyprDict = new Dictionary<T, Type>();//创建一个键值对集合
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var dllFiles = new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory)
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.GetFiles("*.dll")
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.Where(fi => DLLPATTERNS.Any(pattern => fi.Name.StartsWith(pattern)))
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.Select(u =>
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{
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try
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{
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return u.FullName;//获取完整目录
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}
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catch { }
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return string.Empty;//返回一个只读的空字符串，
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})
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.Where(s => !string.IsNullOrEmpty(s))
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.ToList();
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dllFiles.ForEach(f =>
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{
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try
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{
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Assembly assm = Assembly.LoadFrom(f);
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if (assm != null)
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{
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assm.GetTypes().ToList().ForEach(t =>
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{
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T attr = t.GetCustomAttribute<T>();
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if (attr != null)
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{
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attrTyprDict[attr] = t;
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}
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});
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}
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}
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catch(Exception)
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{
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}
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});
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return attrTyprDict;
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}
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public static Type GetTypeByAttributeTypeName(string attrTypeName, EnumHelper.DeviceAttributeType attrType)
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{
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Type type = TYPES.FirstOrDefault(t =>
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{
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DeviceAttribute attr = t.GetCustomAttribute<DeviceAttribute>();
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return attr != null && attr.TypeCode == attrTypeName && attr.AttrType == attrType;
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});
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return type;
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}
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}
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}
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