如何使用JSP在XHTML页面<textarea>中插入XML文件？

要在XHTML页面的<textarea>中插入XML文件，您可以使用Java Server Pages (JSP) 技术。以下是一个简单的示例，说明如何使用JSP在<textarea>中插入XML文件：

首先，确保您的XML文件已经存在，例如example.xml。

<?xml version="1.0" encoding="UTF-8"?>
<data>
  <item>
    <name>Item 1</name>
   <value>Value 1</value>
  </item>
  <item>
    <name>Item 2</name>
   <value>Value 2</value>
  </item>
</data>

创建一个名为insertXML.jsp的JSP文件，并在其中插入以下代码：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"><title>Insert XML into Textarea</title>
</head>
<body>
  <form>
   <textarea rows="10" cols="50">
      <%
        // Load the XML file
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        Document doc = dBuilder.parse(new File("example.xml"));

        // Convert the XML document to a string
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        StringWriter xmlStringWriter = new StringWriter();
        transformer.transform(new DOMSource(doc), new StreamResult(xmlStringWriter));
        String xmlString = xmlStringWriter.getBuffer().toString();

        // Print the XML string in the textarea
        out.print(xmlString);
      %>
    </textarea>
  </form>
</body>
</html>