XML Parser如何处理空白(数据中)？

import xml.etree.ElementTree as ET

xml_string = "<root><element> 这里有空白字符  </element></root>"
root = ET.fromstring(xml_string)
element = root.find("element")
print(element.text)  # 输出：" 这里有空白字符  "

from lxml import etree

xml_string = "<root><element> 这里有空白字符  </element></root>"
root = etree.fromstring(xml_string)
element = root.xpath("//element")[0]
print(element.text)  # 输出：" 这里有空白字符  "

const xml_string = "<root><element> 这里有空白字符  </element></root>";
const parser = new DOMParser();
const xmlDoc = parser.parseFromString(xml_string, "application/xml");
const element = xmlDoc.getElementsByTagName("element")[0];
console.log(element.textContent);  // 输出：" 这里有空白字符  "

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class Main {
    public static void main(String[] args) {
        try {
            String xml_string = "<root><element> 这里有空白字符  </element></root>";
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
            InputSource is = new InputSource(new StringReader(xml_string));
            Document doc = dBuilder.parse(is);
            Element element = (Element) doc.getElementsByTagName("element").item(0);
            System.out.println(element.getTextContent());  // 输出：" 这里有空白字符  "
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}