Jdom、Dom4j、W3c、String相互转换大全以及取Xml的属性值、设置Xml的属性值、删除Xm属性值
源码截图：
原文：Jdom、Dom4j、W3c、String相互转换大全以及取Xml的属性值、设置Xml的属性值、删除Xm属性值
源代码下载地址：http://www.zuidaima.com/share/1550463324146688.htm
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class="java" name="code">package com.zuidaima.xml; import java.io.CharArrayReader; import java.io.IOException; import java.io.StringReader; import java.io.StringWriter; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.apache.xerces.dom.DocumentImpl; import org.apache.xerces.parsers.DOMParser; import org.apache.xml.serialize.OutputFormat; import org.apache.xml.serialize.XMLSerializer; import org.apache.xpath.XPathAPI; import org.jdom.input.DOMBuilder; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import org.xml.sax.InputSource; import org.xml.sax.SAXException; /** * 将document对象，转换成字符串数据 * @author www.zuidaima.com * @param dom * @return */ public class XmlChange { /** * 将document对象，转换成字符串数据 * @param dom * @return */ public static String dom2String(Document dom) // 将document对象，转换成字符串数据。 { String aa = new String(); try { StringWriter ss = new StringWriter(); OutputFormat format = new OutputFormat(dom); // Serialize DOM format.setEncoding("GB2312"); XMLSerializer serial = new XMLSerializer(ss, format); serial.asDOMSerializer(); // As a DOM Serializer serial.serialize(dom.getDocumentElement()); aa = ss.toString(); ss.flush(); ss.close(); } catch (Exception e) { // return false; } return aa; } /** * 字符串转换成document * @author www.zuidaima.com * @param XMLData * @return */ public static Document string2Dom(String XMLData) // 解析字符串xml数据，生成document { // System.out.println("xml:"+XMLData); Document dom = new DocumentImpl(); try { InputSource source = new InputSource(new CharArrayReader(XMLData .toCharArray())); System.out.println("-----888888==" + source); DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory .newInstance(); DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder(); dom = docBuilder.parse(source); System.out.println("-----888888==" + dom); } catch (Exception e) { dom = null; } finally { return dom; } } /** * 解析字符串xml数据，生成document，过滤xml中间的空格 * @author www.zuidaima.com * @param data * @param isSpace * @return * @throws IOException * @throws SAXException */ public static Document string2Dom(String data, boolean isSpace) throws IOException, SAXException // 解析字符串xml数据，生成document，过滤xml中间的空格 { if (isSpace) { DOMParser parser = new DOMParser(); StringReader sr = new StringReader(data); InputSource is = new InputSource(sr); parser.parse(is); sr.close(); return parser.getDocument(); } else { return null; } } /** * 实现dom4j向org.w3c.dom.Document的转换 * * @param doc * @return * @throws Exception */ public static org.w3c.dom.Document dom4j2W3c(Document doc) throws Exception { if (doc == null) { return (null); } java.io.StringReader reader = new java.io.StringReader(doc.toString()); org.xml.sax.InputSource source = new org.xml.sax.InputSource(reader); javax.xml.parsers.DocumentBuilderFactory documentBuilderFactory = javax.xml.parsers.DocumentBuilderFactory .newInstance(); javax.xml.parsers.DocumentBuilder documentBuilder = documentBuilderFactory .newDocumentBuilder(); return (documentBuilder.parse(source)); } /** * * 实现 org.w3c.dom.Document到dom4j的转换 * * @param doc * @return * @throws Exception */ public static org.dom4j.Document parse(org.w3c.dom.Document doc) throws Exception { if (doc == null) { return (null); } org.dom4j.io.DOMReader xmlReader = new org.dom4j.io.DOMReader(); return (xmlReader.read(doc)); } /** * * 实现 org.w3c.dom.Document到jdom的转换 * * @param doc * @return * @throws Exception */ public static org.jdom.Document convertToJDOM(org.w3c.dom.Document doc) throws Exception { if (doc == null) { return (null); } DOMBuilder builder = new DOMBuilder(); org.jdom.Document jdomDoc = builder.build(doc); return jdomDoc; } /** * 根据tagName,attributeName从xml中取得取得相应Node属性值 可能有多个tagName定义的Node，取第一个 * * @param dom * @param tagName * @attributeName * @return Attribute; */ public static String getAttributeValueFromDom(Document dom, String tagName, String attributeName) { String result = ""; if (dom != null && tagName != null && !tagName.trim().equals("") && attributeName != null && !attributeName.trim().equals("")) { NodeList nodeList = null; Node node = null; nodeList = dom.getElementsByTagName(tagName.trim()); if (nodeList != null && nodeList.getLength() > 0) { /** * xml中可能有多个tagName定义的Node，取第一个 */ node = nodeList.item(0); if (node != null) { result = ((Element) node).getAttribute(attributeName); result = result == null ? "" : result.trim(); } } } return result; } /** * 设置xml节点属性值 * * @param dom * @param tagName * @param attributeName * @param value * @return */ public static boolean setAttributeValueFromDom(Document dom, String tagName, String attributeName, String value) { boolean result = false; if (dom != null && tagName != null && !tagName.trim().equals("") && attributeName != null && !attributeName.trim().equals("")) { NodeList nodeList = null; Node node = null; nodeList = dom.getElementsByTagName(tagName.trim()); if (nodeList != null && nodeList.getLength() > 0) { /** * xml中可能有多个tagName定义的Node，取第一个 */ node = nodeList.item(0); if (node != null) { ((Element) node).setAttribute(attributeName, value); result = true; } } } return result; } /** * 根据tagName从xml中取得取得相应Node值 * * @param dom * @param tagName * @return */ public static String getNodeValueFromDom(Document dom, String tagName) { String result = ""; try { if (dom != null && tagName != null && !tagName.trim().equals("")) { NodeList nodeList = null; Node node = null; nodeList = XPathAPI.selectNodeList(dom, tagName.trim());// dom.getElementsByTagName(tagName.trim()); if (nodeList != null && nodeList.getLength() > 0) { /** * xml中可能有多个tagName定义的Node，取第一个 */ node = nodeList.item(0); if (node != null) { node = node.getFirstChild(); if (node != null) result = node.getNodeValue(); result = result == null ? "" : result.trim(); } } } } catch (Exception e) { System.out.println(" getNodeValueFromDom 出错 = " + e.toString()); e.printStackTrace(); } return result; } public static String getTagValueByTagName(Document dom, String tagName) { String result = ""; try { if (dom != null && tagName != null && !tagName.trim().equals("")) { NodeList nodeList = null; Node node = null; if (dom.getElementsByTagName(tagName.trim()) != null) { nodeList = dom.getElementsByTagName(tagName.trim()); if (nodeList.item(0) != null) { node = nodeList.item(0); if ((node.getChildNodes()).item(0).getNodeValue() != null) { result = (node.getChildNodes()).item(0) .getNodeValue().trim(); } } } } } catch (Exception e) { System.out.println(" getNodeValueFromDom 出错 = " + e.toString()); e.printStackTrace(); } return result; } }
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