xml2excel，java解析xml文件

package org.example; import javafx.application.Application; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.Element; import org.dom4j.io.SAXReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.util.List; public class Main { public static void main(String[] args) throws DocumentException, IOException { String req = ","; SAXReader saxReader = new SAXReader(); Document document = saxReader.read(Main.class.getClassLoader().getResource("reference.xml")); Element rootElement = document.getRootElement(); List<Element> list = rootElement.elements(); StringBuilder sb = new StringBuilder(); for (Element e : list) { sb.append(e.attributeValue("service")); sb.append(req); sb.append(e.attributeValue("method")); sb.append(req); List<Element> child = e.elements(); if (child.size() != 0) { List<Element> params = child.get(0).elements(); sb.append(params.size()); sb.append(req); for (Element param : params) { sb.append(param.attributeValue("index")); sb.append(req); sb.append(param.attributeValue("type")); sb.append(req); sb.append(param.attributeValue("expression")); sb.append(req); } // break; } else { sb.append("0" + req); } // sb.deleteCharAt(sb.length()-1); sb.append("\n"); } // System.out.println(sb); File file = new File("res.csv"); BufferedWriter writer = new BufferedWriter(new FileWriter(file, false)); writer.write(sb.toString()); writer.close(); } }