dom4j读写xml文件示例（EOS）

package com.primeton.eos;

import java.io.File;

import java.io.FileWriter;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import org.dom4j.Document;

import org.dom4j.DocumentHelper;

import org.dom4j.Element;

import org.dom4j.io.OutputFormat;

import org.dom4j.io.SAXReader;

import org.dom4j.io.XMLWriter;

import com.eos.foundation.data.DataObjectUtil;

import com.eos.system.annotation.Bizlet;

import commonj.sdo.DataObject;

@Bizlet("")

public class Dom4jUtil {

@Bizlet("")

public static StringcastDataObjects2XML(DataObject[] daos)

throwsException {

String filePath ="c:/abc/test.xml";

Document doc =DocumentHelper.createDocument();

Element root =doc.addElement("dicts");//这是XML的根目录，在这里我写成了实体的复数名

Element category =null;//这是实体名

Element dicttypeid =null;

Element dictid = null;

Element dictname = null;

Element status = null;

Element sortno = null;

Element rank = null;

Element parentid = null;

Element seqno = null;

for (DataObject dao : daos){

category =root.addElement("dict");//添加实体

dicttypeid =category.addElement("dicttypeid");

if(dao.getString("eosDictType/dicttypeid") != null)

dicttypeid.addText(dao.getString("eosDictType/dicttypeid"));

dictid =category.addElement("dictid");

if(dao.getString("dictid") != null)

dictid.addText(dao.getString("dictid"));

dictname =category.addElement("dictname");

if(dao.getString("dictname") != null)

dictname.addText(dao.getString("dictname"));

status =category.addElement("status");

if(dao.getString("status") != null)

status.addText(dao.getString("status"));

sortno =category.addElement("sortno");

if(dao.getString("sortno") != null)

sortno.addText(dao.getString("sortno"));

rank =category.addElement("rank");

if(dao.getString("rank") != null)

rank.addText(dao.getString("rank"));

parentid =category.addElement("parentid");

if(dao.getString("parentid") != null)

parentid.addText(dao.getString("parentid"));

seqno =category.addElement("seqno");

if(dao.getString("seqno") != null)

seqno.addText(dao.getString("seqno"));

}

OutputFormat xmlFormat = newOutputFormat();//添加一个文件导出属性的实体

xmlFormat.setEncoding("GBK");//将导出文件的编码设置成GBK

filePath =filePath.replace("\\", "/");//将路径中的\替换成/

File file = newFile(filePath);

if(!file.exists())(newFile(filePath.substring(0,filePath.lastIndexOf("/")))).mkdirs();//如果是不存在的目录，则生成对应的目录

XMLWriter writer = newXMLWriter(new FileWriter(filePath),xmlFormat);//生成写XML文件的类

writer.write(doc);

writer.close();

return filePath;

}

@Bizlet("")

public static DataObject[]castXML2DataObject(String filePath) {

List lists = newArrayList();//定义一个List，因为返回的是数组，开始无法确定数组的长度，故先生成List

SAXReader reader = newSAXReader();//读取XML文件的类

try {

Document doc= reader.read(new File(filePath));

Element root= doc.getRootElement();//获取根节点

IteratoreleIterator = root.elementIterator();//获取实体集合

DataObjectdao = null;

while(eleIterator.hasNext()) {

Elementdict = eleIterator.next();

IteratordictIterator = dict.elementIterator();//获取属性集合

while(dictIterator.hasNext()) {

dao=DataObjectUtil.createDataObject("com.primeton.eos.dom4jutildb.EosDictEntry");

dao.set("eosDictType/dicttypeid",dictIterator.next().getText());

dao.set("dictid",dictIterator.next().getText());

dao.set("dictname",dictIterator.next().getText());

dao.set("status",dictIterator.next().getText());

dao.set("sortno",dictIterator.next().getText());

dao.set("rank",dictIterator.next().getText());

dao.set("parentid",dictIterator.next().getText());

dao.set("seqno",dictIterator.next().getText());

}

if(dao != null)lists.add(dao);

}

} catch (Exception e) {

e.printStackTrace();

}

return (DataObject[])lists.toArray(new DataObject[lists.size()]);

}

}