获取分类节点

AbstractG4MApplication g4mApp = (AbstractG4MApplication) AIFUtility.getCurrentApplication();
AbstractG4MContext m_context = g4mApp.getG4MContext();
InterfaceAIFComponent[] interfaceAIFComponents = g4mApp.getTargetComponents();
for(int i=0;i<interfaceAIFComponents.length;i++) {
　　System.out.println("interfaceAIFComponents[i] == "+interfaceAIFComponents[i]);
}
G4MTreeNode g4mTreeNode = m_context.getTree().getSelectedNode();
if(g4mTreeNode==null) {
　　MessageBox.post("请选择分类！", "提示", MessageBox.INFORMATION);
　　return null;
}