单击按钮，打开xml文件，将数据显示到文本框中

import xml.etree.ElementTree as ET

def open_xml_file(file_path):
    tree = ET.parse(file_path)
    root = tree.getroot()
    data = ""

    for child in root:
        data += child.text + "\n"

    return data

document.getElementById("openButton").addEventListener("click", function() {
    fetch("/open-xml-file") // 发送请求到后端的接口
        .then(response => response.text())
        .then(data => {
            document.getElementById("textBox").value = data; // 将数据显示到文本框中
        });
});

from flask import Flask

app = Flask(__name__)

@app.route("/open-xml-file")
def handle_open_xml_file():
    file_path = "path/to/xml/file.xml"  # 替换为实际的XML文件路径
    data = open_xml_file(file_path)
    return data

if __name__ == "__main__":
    app.run()