XMl各种格式转换功能代码

package com.cdv.test;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;
import org.jdom2.input.SAXBuilder;
import org.jdom2.output.Format;
import org.jdom2.output.XMLOutputter;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;

public class XmlKit {

/**
* dom4j解析xml
*/

public static org.dom4j.Document xmlTodDocDom4j(String path){

File file = new File(path);
org.dom4j.Document doc = null;
try {
doc = new SAXReader().read(file);
} catch (DocumentException e) {
e.printStackTrace();
}
return doc;
}

public static String docToString(org.dom4j.Document document){
String xmlStr = document.asXML();
return xmlStr;
}

public static org.dom4j.Document stringToXmlDom4j(String xmlStr){

org.dom4j.Document doc = null;
try {
doc = DocumentHelper.parseText(xmlStr);
} catch (DocumentException e) {
e.printStackTrace();
}
return doc;
}

/**
* Document 保存为 XML 文件
*
* @param doc Document对象
* @param path 文件路径
*/
public static void doc2XMLDom4j(org.dom4j.Document doc, String path) {
try {
XMLWriter xmlWriter = new XMLWriter(new FileWriter(path));
xmlWriter.write(doc);
xmlWriter.flush();
xmlWriter.close();
} catch (Exception e) {
return;
}
}

/**
* jdom解析xml
*/

public static org.jdom2.Document xmlTodDocJdom(String path){

File file = new File(path);
org.jdom2.Document doc = null;
try {
doc =new SAXBuilder().build(file);
} catch (Exception e) {
e.printStackTrace();
}
return doc;
}
public static String docToString(org.jdom2.Document doc){

String xmlStr = "";
Format format = Format.getPrettyFormat();
format.setEncoding("UTF-8");//配置xml文档的字符为gb2312，解决中文问题
XMLOutputter xmlout = new XMLOutputter(format);
ByteArrayOutputStream bo = new ByteArrayOutputStream();
try {
xmlout.output(doc,bo);
} catch (IOException e) {
e.printStackTrace();
}
xmlStr = bo.toString();

return xmlStr;
}

public static org.jdom2.Document stringTodDocJdom (String xmlStr){
org.jdom2.Document doc = null;
StringReader sr = new StringReader(xmlStr);
InputSource is = new InputSource(sr);
try {
doc =(new SAXBuilder()).build(is);
} catch (Exception e) {
e.printStackTrace();
}

return doc;
}

/**
* DOCUMENT格式化输出保存为XML
*
* @param doc JDOM的Document
* @param filePath 输出文件路径
* @throws Exception
*/
public static void doc2XML(org.jdom2.Document doc, String filePath) throws Exception{
Format format = Format.getCompactFormat();
format.setEncoding("UTF-8"); //设置XML文件的字符为UTF-8
format.setIndent("     ");//设置缩进
XMLOutputter outputter = new XMLOutputter(format);//定义输出 ,在元素后换行，每一层元素缩排四格
FileWriter writer = new FileWriter(filePath);//输出流
outputter.output(doc, writer);
writer.close();
}

/**
* jdk api解析xml
*/

public static Document xmlTodDoc(String path){

File file = new File(path);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
Document doc = null;
try {
builder = factory.newDocumentBuilder();
doc = builder.parse(file);
} catch (Exception e) {
e.printStackTrace();
}
return doc;
}

public static String xmlToString(Document doc){

String xmlStr = "";
TransformerFactory  tf  =  TransformerFactory.newInstance();
Transformer t;
try {
t = tf.newTransformer();
ByteArrayOutputStream  bos  =  new  ByteArrayOutputStream();
t.transform(new DOMSource(doc), new StreamResult(bos));
xmlStr = bos.toString();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return xmlStr;
}

public static Document stringToXml(String xmlStr){
Document doc = null;
StringReader sr = new StringReader(xmlStr);
InputSource is = new InputSource(sr);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder;
try {
builder = factory.newDocumentBuilder();
doc = builder.parse(is);
} catch (Exception e) {
e.printStackTrace();
}

return doc;
}

/**
* Document 保存为 XML 文件
*
* @param doc Document对象
* @param path 文件路径
*/
public static void doc2XML(Document doc, String path) {
try {
Source source = new DOMSource(doc);
Result result = new StreamResult(new File(path));
Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.transform(source, result);
} catch (Exception e) {
return;
}
}

}

org.dom4j.Element element =  doc.getRootElement();

System.out.println(element.getName());

List<org.dom4j.Element> iter = element.elements();

for (org.dom4j.Element elem : iter) {
System.out.println(elem.getName());
if(elem.getName().equals("HeadInfo")){
System.out.println(elem.attributeValue("PGMVersion"));
};

if(elem.getName().equals("PGM")){

List<org.dom4j.Element> subIter = elem.elements();

for (org.dom4j.Element el : subIter) {

System.out.println(el.getName());
System.out.println(el.attributeValue("ItemType"));
if(el.attributeValue("ItemType").equals("1")){

List<org.dom4j.Element> subEl = el.elements();

for (org.dom4j.Element e : subEl) {
System.out.println(e.getName());
}
}
}

}

}