S2Adapter

予想通り、Flex純正AMFGatewayを使って、Seasar2と接続できました。

package org.seasar.amf;

...

public class S2Adapter extends JavaAdapter {
  public Object invokeFunction(ActionContext ctx,

      String name,

      String methodName, List argList)

      throws Throwable {
    S2Container container =

      SingletonS2ContainerFactory.getContainer();

    Object component = container.getComponent(name);

    BeanDesc beanDesc = BeanDescFactory.getBeanDesc(

      component.getClass());

    return beanDesc.invoke(component, methodName,

      argList.toArray());

  }
  public boolean supportsService(ActionContext ctx,

      String name,

      String methodName, List argList, String arg4)

      throws Exception {
    S2Container container =

      SingletonS2ContainerFactory.getContainer();

    return container.hasComponentDef(name);

  }

}

次に、WEB-INF/flex/gateway-config.xmlにAdapterの定義を足します。
<adapter type="stateless-class">org.seasar.amf.S2Adapter