/// <summary>
/// 根据类型获取类的实例
/// </summary>
/// <param name="type">可以是接口类型(带有AjaxClassAttribute标记)，或者是一个类的类型</param>
/// <returns></returns>
public static object GetInstance(Type type)
{
if (type == null)
{
return(null);
}
if (type.IsInterface)
{
if (type.IsDefined(typeof(AjaxClassAttribute), true))
{
object[] attrs = type.GetCustomAttributes(typeof(AjaxClassAttribute), true);
if (attrs.Length > 0 && (attrs[0] is AjaxClassAttribute))
{
AjaxClassAttribute attribute = attrs[0] as AjaxClassAttribute;
Type classType = Type.GetType(attribute.DeclaringType);
if (classType != null)
{
return(Activator.CreateInstance(classType));
}
}
}
}
else if (type.IsClass)
{
return(Activator.CreateInstance(type));
}
return(null);
}
private static void SetAjaxMethod(AjaxMethod method, MethodInfo methodInfo)
{
if (!methodInfo.DeclaringType.IsDefined(typeof(AjaxClassAttribute)))
{
throw new Exception(string.Format("无效的类[{0}]", methodInfo.DeclaringType));
}
if (!methodInfo.IsDefined(typeof(AjaxMethodAttribute), true))
{
throw new Exception(string.Format("方法[{0}]不是AjaxMethod标记方法", methodInfo.Name));
}
method.DeclaringType = methodInfo.DeclaringType;
method.MethodInfo = methodInfo;
method.ReturnType = methodInfo.ReturnType;
AjaxClassAttribute attr = methodInfo.DeclaringType.GetCustomAttribute <AjaxClassAttribute>(true);
method.FullClassName = attr.DeclaringType;
if (methodInfo.IsDefined(typeof(DescriptionAttribute), true))
{
method.Description = methodInfo.GetCustomAttribute <DescriptionAttribute>(true).Description;
}
}
