public object[] GetParameters(HttpRequest request, ActionDescription action)
{
string input = request.ReadInputStream();
if (action.Parameters.Length == 1)
{
object value = GetObjectFromString(input, action);
return new object[1] { value };
}
else
return GetMultiObjectsFormString(input, action);
}
private object GetObjectFromRequest(HttpRequest request, ActionDescription action)
{
if( action.Parameters[0].ParameterType == typeof(string) )
return request.ReadInputStream();
if( action.Parameters[0].ParameterType == typeof(XmlDocument) ) {
string xml = request.ReadInputStream();
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
return doc;
}
Type destType = action.Parameters[0].ParameterType.GetRealType();
XmlSerializer mySerializer = new XmlSerializer(destType);
request.InputStream.Position = 0;
StreamReader sr = new StreamReader(request.InputStream, request.ContentEncoding);
return mySerializer.Deserialize(sr);
}
private object[] GetMultiObjectsFormRequest(HttpRequest request, ActionDescription action)
{
string xml = request.ReadInputStream();
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
XmlNode root = doc.LastChild;
//if( root.ChildNodes.Count != action.Parameters.Length )
// throw new ArgumentException("客户端提交的数据项与服务端的参数项的数量不匹配。");
object[] parameters = new object[action.Parameters.Length];
for( int i = 0; i < parameters.Length; i++ ) {
string name = action.Parameters[i].Name;
XmlNode node = (from n in root.ChildNodes.Cast<XmlNode>()
where string.Compare(n.Name, name, StringComparison.OrdinalIgnoreCase) == 0
select n).FirstOrDefault();
try {
if( node != null ) {
object parameter = null;
Type destType = action.Parameters[i].ParameterType.GetRealType();
if( destType.IsSupportableType() )
parameter = ModelHelper.UnSafeChangeType(node.InnerText, destType);
else
parameter = XmlDeserialize(node.OuterXml, destType, request.ContentEncoding);
parameters[i] = parameter;
}
}
catch( Exception ex ) {
throw new InvalidCastException("数据转换失败，当前参数名：" + name, ex);
}
}
return parameters;
}