我使用此代码创建一个具有预期输出的新节点:代码:openmy$fh,"new();my$doc=$parser->load_xml(IO=>$fh);#createanewnodeinXMLfilemy$root=$doc->getDocumentElement();my$new_element=$doc->createElement("item");#FIXME$new_element->appendTextNode(sprintf'',join"\n",@input);$new_element->setAttribute('desc',$desc);$root->appendChi