public void Apply(ActionModel action)
{
// 判断是否为指定接口类型的实现类
if (!serviceType.IsAssignableFrom(action.Controller.ControllerType))
{
return;
}
var actionParams = action.ActionMethod.GetParameters();
// 这串linq是查询出接口类型中与当前action相对应方法，从中获取特性
var method = serviceType.GetMethods().FirstOrDefault(mth =>
{
var mthParams = mth.GetParameters();
return(action.ActionMethod.Name == mth.Name &&
actionParams.Length == mthParams.Length &&
actionParams.Any(x => mthParams.Where(o => x.Name == o.Name).Any(o => x.GetType() == o.GetType())));
});
var attrs = method.GetCustomAttributes(false);
var actionAttrs = new List <object>();
foreach (var att in attrs)
{
//下面的HttpMethodAttribute是我们自己写的特性类型
if (att is HttpMethodAttribute methodAttr)
{
var httpMethod = methodAttr.Method;
var path = methodAttr.Path;
if (httpMethod == HttpMethod.Get)
{
//添加的HttpGet和HttpPost使用了命名空间别名
actionAttrs.Add(Activator.CreateInstance(typeof(HttpGet), path));
}
else if (httpMethod == HttpMethod.Post)
{
actionAttrs.Add(Activator.CreateInstance(typeof(HttpPost), path));
}
}
//下面的RouteAttribute是我们自己写的特性类型
if (att is RouteAttribute routeAttr)
{
actionAttrs.Add(Activator.CreateInstance(typeof(Route), routeAttr.Template));
}
}
if (actionAttrs.Any())
{
action.Selectors.Clear();
//AddRange静态方法就是从源码中复制过来的
ModelConventionHelper.AddRange(action.Selectors, ModelConventionHelper.CreateSelectors(actionAttrs));
}
}
