/// <summary>
/// 属性注入
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private object InjectPropertyFromCollection(object instance, Type type)
{
var properties = type.GetProperties();
int valuetypeIndex = 0;
for (int i = 0; i < properties.Length; i++)
{
var item = properties[i];
if (!item.CanWrite)
{
continue;
}
if (item.PropertyType.IsValueType || item.PropertyType == TypeConst.StringType)
{
//值类型的和字符串注入
if (!(Parameters == null || Parameters.Length == 0 || valuetypeIndex >= Parameters.Length))
{
//安装顺序配置输入参数
item.SetValue(instance, Parameters[valuetypeIndex]);
valuetypeIndex++;
}
}
else
{
if (item.GetValue(instance) == null)
{
//如果是类，则寻找容器里已经注册了的类型，没有则返回null
var interFaceAndAbstractInstance = TypeItemObjectCollectionObject.GetValue(item.PropertyType);
if (interFaceAndAbstractInstance != null)
{
item.SetValue(instance, interFaceAndAbstractInstance.ImplementationTypeInstance);
}
}
}
}
return(instance);
}
/// <summary>
/// 获取实例（构造函数创建方式）
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private object GetInstance(Type type)
{
ConstructorInfo constructorInfo = null;
var constructors = type.GetConstructors();
//判断构造函数的个数
if (constructors.Length == 1)
{
constructorInfo = constructors[0];
}
else
{
Type iocDefaultAttributeType = typeof(IocDefaultAttribute);
int count = 0;
foreach (var item in constructors)
{
if (item.IsDefined(iocDefaultAttributeType))
{
count++;
constructorInfo = item;
}
}
if (count == 0)
{
//如果有多个构造函数，但是没有标记。则取第一个构造函数
constructorInfo = constructors[0];
}
else
if (count != 1)
{
throw new Exception("有多个构造函数标记了IocDefault，或者没有标记IocDefault，会导致容器调用构造函数不明确");
}
}
var res = constructorInfo.GetParameters();
if (res.Length <= 0)
{
return(Activator.CreateInstance(type));
}
//构造函数的参数注入
object[] paramsObjects = new object[res.Length];
int valuetypeIndex = 0;
for (int i = 0; i < res.Length; i++)
{
var tmp = res[i];
if (tmp.ParameterType.IsValueType || tmp.ParameterType == TypeConst.StringType)
{
//值类型的和字符串注入
if (Parameters == null || Parameters.Length == 0 || valuetypeIndex >= Parameters.Length)
{
//没有配置输入参数，给予默认值
if (tmp.ParameterType.IsValueType)
{
paramsObjects[i] = 0;
}
}
else
{
//安装顺序配置输入参数
paramsObjects[i] = Parameters[valuetypeIndex];
valuetypeIndex++;
}
}
else
{
//如果是类，则寻找容器里已经注册了的类型，没有则返回null
var interFaceAndAbstractInstance = TypeItemObjectCollectionObject.GetValue(tmp.ParameterType);
if (interFaceAndAbstractInstance != null)
{
paramsObjects[i] = interFaceAndAbstractInstance.ImplementationTypeInstance;
}
}
}
return(Activator.CreateInstance(type, paramsObjects));
}