【java工具类】java做的一个xml转Excel工具，基于maven工程

说明：适合数据库导出为xml时转成Excel

本工具将上传至GitHub：https://github.com/xiaostudy/xiaostudyAPI3

doc4j的maven依赖

 <!--xml解析的dom4j-->
         <!-- https://mvnrepository.com/artifact/dom4j/dom4j -->
         <dependency>
             <groupId>dom4j</groupId>
             <artifactId>dom4j</artifactId>
             <version>1.6.1</version>
         </dependency>

主要代码

package com.xiaostudy.util;
 
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
 
import java.io.File;
import java.util.ArrayList;
import java.util.List;
 
/**
 * XML工具类
 * @author xiaostudy
 * @date 2019.4.26
 * @version 1.0.0
 */
public class XmlUtil {
 
    public static void main(String[] args) {
        Boolean aBoolean = Xml2ExcelFile("C:\\Users\\Administrator\\Desktop\\test.xml", "C:\\Users\\Administrator\\Desktop\\test2.xlsx");
        System.out.println(aBoolean);
    }
 
    /**
     * Xml转Excel文件
     * @param strXmlFilePath Xml文件路径
     * @param strExcleFilePath Excel文件存放路径
     * @return
     */
    public static Boolean Xml2ExcelFile(String strXmlFilePath, String strExcleFilePath) {
        if(StringUtil.isTrimNull(strXmlFilePath) || StringUtil.isTrimNull(strExcleFilePath)) {
            return false;
        }
 
        List<List<String>> listList = readXml(strXmlFilePath);
        if(null == listList || listList.isEmpty()) {
            return false;
        }
 
        return ExcelUtil.createExcelFile(strExcleFilePath, listList);
    }
 
    /**
     * 读取Xml文件，以List<List<String>>形式返回
     * @param strFile
     * @return
     */
    public static List<List<String>> readXml(String strFile) {
        if(StringUtil.isTrimNull(strFile)) {
            return null;
        }
 
        SAXReader reader = new SAXReader();
        File file = new File(strFile);
        if(!file.exists() || !file.isFile()) {
            return null;
        }
 
        Document document = null;
        try {
            document = reader.read(file);
        } catch (DocumentException e) {
            e.printStackTrace();
        }
        List<List<String>> listList = new ArrayList<>();
 
        if (null != document) {
            Element root = document.getRootElement();
            List<Element> childElements = root.elements();
            List<String> titleList = new ArrayList<>();
            listList.add(titleList);
            boolean flag = true;
            for (Element child : childElements) {
                List<String> list = new ArrayList<>();
 
                List<Element> elementList = child.elements();
                for (Element ele : elementList) {
                    if(flag) {
                        titleList.add(ele.getName());
                    }
                    list.add(ele.getText());
                }
                flag = false;
 
                listList.add(list);
 
                System.out.println();
            }
        }
 
        return listList;
    }
}

依赖的工具类GitHub上有https://github.com/xiaostudy/xiaostudyAPI3

StringUtil.isTrimNull

 public static boolean isTrimNull(Object obj) {
         if (null != obj) {
             return isNull(obj.toString().trim());
         } else {
             return true;
         }
     }

Excel.createExcelFile

 public static <T> Boolean createExcelFile(String fileName, List<List<T>> list) {
         logger.debug(">>>>>" + CLASSNAME + ".createExcelFile()...");
         logger.debug("fileName: " + fileName);
         logger.debug("list: " + list);
 
         FileOutputStream fileOut = null;
         try {
             if(StringUtil.isTrimNull(fileName)) {
                 return false;
             }
 
             File file = new File(fileName);
             if(file.exists()) {
                 System.out.println("文件已存在！");
                 logger.debug("文件已存在！");
                 return false;
             }
 
             Workbook workbook = null;
             String excelType = null;
             if(FileUtil.isFileNameEndsWith(fileName, ".xls")) {
                 excelType = "xls";
                 workbook = new HSSFWorkbook();
             } else if(FileUtil.isFileNameEndsWith(fileName, ".xlsx")) {
                 excelType = "xlsx";
                 workbook = new XSSFWorkbook();
             } else {
                 return false;
             }
 
             fileOut = new FileOutputStream(fileName);
             workbook.write(fileOut);
             fileOut.close();
 
             FileInputStream is = new FileInputStream(file);
             if("xls".equals(excelType)) {
                 POIFSFileSystem fs = new POIFSFileSystem(is);
                 workbook = new HSSFWorkbook(fs);
             } else if("xlsx".equals(excelType)) {
                 workbook = new XSSFWorkbook(is);
             }
 
             Sheet sheet = workbook.createSheet();
             sheet = setSheetValue(sheet , list);
 
             fileOut = new FileOutputStream(fileName);
             workbook.write(fileOut);
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             if(fileOut != null) {
                 try {
                     fileOut.close();
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
             }
             logger.debug("<<<<<" + CLASSNAME + ".createExcelFile().");
             return true;
         }
     }