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package com.mymhotel.opera;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Properties;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
public class DOMUtils {
/**
* 初始化一个空Document对象返回。
*
* @return a Document
*/
public static Document newXMLDocument() {
try {
return newDocumentBuilder().newDocument();
} catch (ParserConfigurationException e) {
throw new RuntimeException(e.getMessage());
}
}
/**
* 初始化一个DocumentBuilder
*
* @return a DocumentBuilder
* @throws ParserConfigurationException
*/
public static DocumentBuilder newDocumentBuilder()
throws ParserConfigurationException {
return newDocumentBuilderFactory().newDocumentBuilder();
}
/**
* 初始化一个DocumentBuilderFactory
*
* @return a DocumentBuilderFactory
*/
public static DocumentBuilderFactory newDocumentBuilderFactory() {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
return dbf;
}
/**
* 将传入的一个XML String转换成一个org.w3c.dom.Document对象返回。
*
* @param xmlString
* 一个符合XML规范的字符串表达。
* @return a Document
*/
public static Document parseXMLDocument(String xmlString) {
if (xmlString == null) {
throw new IllegalArgumentException();
}
try {
return newDocumentBuilder().parse(
new InputSource(new StringReader(xmlString)));
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
}
/**
* 给定一个输入流，解析为一个org.w3c.dom.Document对象返回。
*
* @param input
* @return a org.w3c.dom.Document
*/
public static Document parseXMLDocument(InputStream input) {
if (input == null) {
throw new IllegalArgumentException("参数为null！");
}
try {
return newDocumentBuilder().parse(input);
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
}
/**
* 给定一个文件名，获取该文件并解析为一个org.w3c.dom.Document对象返回。
*
* @param fileName
* 待解析文件的文件名
* @return a org.w3c.dom.Document
*/
public static Document loadXMLDocumentFromFile(String fileName) {
if (fileName == null) {
throw new IllegalArgumentException("未指定文件名及其物理路径！");
}
try {
return newDocumentBuilder().parse(new File(fileName));
} catch (SAXException e) {
throw new IllegalArgumentException("目标文件（" + fileName
+ "）不能被正确解析为XML！" + e.getMessage());
} catch (IOException e) {
throw new IllegalArgumentException("不能获取目标文件（" + fileName + "）！"
+ e.getMessage());
} catch (ParserConfigurationException e) {
throw new RuntimeException(e.getMessage());
}
}
/*
* 把dom文件转换为xml字符串
*/
public static String toStringFromDoc(Docum
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