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.IO;
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using System.Reflection;
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using System.Web;
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namespace BatchService.Framework.Utility
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{
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/// <summary>
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/// ³ÌÐò¼¯·´É丨ÖúÀà
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/// </summary>
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public static class AssemblyHelper
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{
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/// <summary>
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/// µÃµ½Èë¿Ú³ÌÐò¼¯£¬¼æÈÝWebºÍWinform
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/// </summary>
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/// <returns></returns>
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public static Assembly GetEntryAssembly()
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{
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var entryAssembly = Assembly.GetEntryAssembly();
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if (entryAssembly != null)
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return entryAssembly;
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if (System.Web.HttpContext.Current == null ||
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System.Web.HttpContext.Current.ApplicationInstance == null)
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return Assembly.GetExecutingAssembly();
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var type = System.Web.HttpContext.Current.ApplicationInstance.GetType();
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while (type != null && type.Namespace == "ASP")
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{
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type = type.BaseType;
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}
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return type == null ? null : type.Assembly;
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}
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public static string GetPropertyValue<T>(T t, string propertyName)
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{
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string ret = "";
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var types = typeof(T);
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var memberResult = types.GetProperties().FirstOrDefault(p => p.Name.ToLower() == propertyName.ToLower());
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var value = memberResult.GetValue(t, null);
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if (value != null)
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{
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ret = value.ToString();
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}
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else
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{
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ret = "";
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}
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return ret;
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}
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public static IList<Stream> GetResourceStream(Assembly assembly, System.Linq.Expressions.Expression<Func<string, bool>> predicate)
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{
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List<Stream> result = new List<Stream>();
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foreach (string resource in assembly.GetManifestResourceNames())
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{
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if (predicate.Compile().Invoke(resource))
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{
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result.Add(assembly.GetManifestResourceStream(resource));
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}
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}
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StreamReader sr = new StreamReader(result[0]);
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string r = sr.ReadToEnd();
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result[0].Position = 0;
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return result;
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}
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/// <summary>
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/// ɨÃè³ÌÐò¼¯ÕÒµ½¼Ì³ÐÁËij»ùÀàµÄËùÓÐ×ÓÀà
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/// </summary>
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/// <param name="inheritType">»ùÀà</param>
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/// <param name="searchpattern">ÎļþÃû¹ýÂË</param>
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/// <returns></returns>
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public static List<Type> FindTypeByInheritType(Type inheritType, string searchpattern = "*.dll")
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{
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var result = new List<Type>();
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Type attr = inheritType;
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string domain = GetBaseDirectory();
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string[] dllFiles = Directory.GetFiles(domain, searchpattern, SearchOption.TopDirectoryOnly);
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foreach (string dllFileName in dllFiles)
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{
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foreach (Type type in Assembly.LoadFrom(dllFileName).GetLoadableTypes())
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{
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if (type.BaseType == inheritType)
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{
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result.Add(type);
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}
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}
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}
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return result;
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}
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/// <summary>
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/// ɨÃè³ÌÐò¼¯ÕÒµ½´øÓÐij¸öAttributeµÄËùÓÐPropertyInfo
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="searchpattern">ÎļþÃû¹ýÂË</param>
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/// <returns></returns>
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public static Dictionary<PropertyInfo, T> FindAllPropertyByAttribute<T>(string searchpattern = "*.dll") where T : Attribute
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{
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var result = new Dictionary<PropertyInfo, T>();
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var attr = typeof(T);
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string domain = GetBaseDirectory();
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string[] dllFiles = Directory.GetFiles(domain, searchpattern, SearchOption.TopDirectoryOnly);
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foreach (string dllFileName in dllFiles)
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{
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foreach (Type type in Assembly.LoadFrom(dllFileName).GetLoadableTypes())
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{
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foreach (var property in type.GetProperties())
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{
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var attrs = property.GetCustomAttributes(attr, true);
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if (attrs.Length == 0)
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continue;
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result.Add(property, (T)attrs.First());
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}
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}
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}
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return result;
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}
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/// <summary>
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/// ɨÃè³ÌÐò¼¯ÕÒµ½ÀàÐÍÉÏ´øÓÐij¸öAttributeµÄËùÓÐÀàÐÍ
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="searchpattern">ÎļþÃû¹ýÂË</param>
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/// <returns></returns>
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public static Dictionary<string, List<T>> FindAllTypeByAttribute<T>(string searchpattern = "*.dll") where T : Attribute
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{
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var result = new Dictionary<string, List<T>>();
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Type attr = typeof(T);
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string domain = GetBaseDirectory();
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string[] dllFiles = Directory.GetFiles(domain, searchpattern, SearchOption.TopDirectoryOnly);
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foreach (string dllFileName in dllFiles)
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{
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foreach (Type type in Assembly.LoadFrom(dllFileName).GetLoadableTypes())
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{
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var typeName = type.AssemblyQualifiedName;
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var attrs = type.GetCustomAttributes(attr, true);
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if (attrs.Length == 0)
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continue;
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result.Add(typeName, new List<T>());
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foreach (T a in attrs)
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result[typeName].Add(a);
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}
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}
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return result;
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}
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/// <summary>
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/// ɨÃè³ÌÐò¼¯ÕÒµ½ÊµÏÖÁËij¸ö½Ó¿ÚµÄµÚÒ»¸öʵÀý
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="searchpattern">ÎļþÃû¹ýÂË</param>
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/// <returns></returns>
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public static T FindTypeByInterface<T>(string i_servicename, string searchpattern = "BatchService.Custom*.dll") where T : class
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{
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//var interfaceType = typeof(T);
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string domain = GetBaseDirectory();
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//domain = Path.Combine(domain, "Plugin");
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string[] dllFiles = Directory.GetFiles(domain, searchpattern, SearchOption.TopDirectoryOnly);
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foreach (string dllFileName in dllFiles)
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{
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foreach (Type type in Assembly.LoadFrom(dllFileName).GetLoadableTypes())
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{
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if (i_servicename == type.FullName)
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{
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LogHelper.Info("´´½¨ÊµÀý:" + type.FullName);
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var instance = Activator.CreateInstance(type) as T;
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return instance;
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}
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}
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}
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return null;
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}
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public static IEnumerable<Type> GetLoadableTypes(this Assembly assembly)
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{
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if (assembly == null) throw new ArgumentNullException("assembly");
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try
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{
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return assembly.GetTypes();
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}
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catch (ReflectionTypeLoadException e)
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{
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return e.Types.Where(t => t != null);
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}
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}
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/// <summary>
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/// µÃµ½µ±Ç°Ó¦ÓóÌÐòµÄ¸ùĿ¼
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/// </summary>
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/// <returns></returns>
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public static string GetBaseDirectory()
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{
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var baseDirectory = AppDomain.CurrentDomain.SetupInformation.PrivateBinPath;
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if (AppDomain.CurrentDomain.SetupInformation.PrivateBinPath == null)
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baseDirectory = AppDomain.CurrentDomain.BaseDirectory;
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return baseDirectory;
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}
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public static string GetBaseDirectory_Autoswitch()
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{
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var ret = "";
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DirectoryInfo dirInfo = new DirectoryInfo(GetBaseDirectory());
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if (IsWebApp())
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{
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ret = dirInfo.Parent.FullName;
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}
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else
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{
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ret = dirInfo.FullName;
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}
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return ret;
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}
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/// <summary>
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/// ÅжÏÊÇ·ñÊÇweb³ÌÐò
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/// </summary>
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/// <returns>true£ºÊÇ£¬false£ºwinform</returns>
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public static bool IsWebApp()
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{
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bool flag = false;
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if (HttpContext.Current != null)
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{
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flag = true;
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}
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//·ñÔòÊÇwinform³ÌÐò
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return flag;
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}
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}
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}
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