从第3行又可以看出，它是从portlet得到其id然后传递给重载的另一个方法：
public List<String> getPortletResourceActions(String name) { name = PortletConstants.getRootPortletId(name); List<String> actions = getActions(_portletResourceActions, name); if (!actions.isEmpty()) { return actions; } synchronized (this) { actions = getPortletMimeTypeActions(name); if (!name.equals(PortletKeys.PORTAL)) { checkPortletActions(name, actions); } List<String> groupDefaultActions = _portletResourceGroupDefaultActions.get(name); if (groupDefaultActions == null) { groupDefaultActions = new UniqueList<String>(); checkPortletGroupDefaultActions(groupDefaultActions); _portletResourceGroupDefaultActions.put( name, new UnmodifiableList<String>(groupDefaultActions)); } List<String> guestDefaultActions = _portletResourceGuestDefaultActions.get(name); if (guestDefaultActions == null) { guestDefaultActions = new UniqueList<String>(); checkPortletGuestDefaultActions(guestDefaultActions); _portletResourceGuestDefaultActions.put( name, new UnmodifiableList<String>(guestDefaultActions)); } List<String> layoutManagerActions = _portletResourceLayoutManagerActions.get(name); if (layoutManagerActions == null) { layoutManagerActions = new UniqueList<String>(); checkPortletLayoutManagerActions(layoutManagerActions); _portletResourceLayoutManagerActions.put( name, new UnmodifiableList<String>(layoutManagerActions)); } actions = setActions(_portletResourceActions, name, actions); } return actions; }Liferay 启动过程分析13(3)
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