操作xml文件或者XML内存对象，得到某个节点的值
package com.trs.rws.tools;import java.io.*;import java.util.*;import javax.xml.parsers.*;import org.w3c.dom.*;import com.trs.tool.*;import com.trs.tool.Logger;import com.trs.tool.TException;/** * <p>Title: xml操作类</p> * <p>Description: 操作xml文件或者XML内存对象，得到某个节点的值！</p> * <p>Copyright: Copyright (c) 2003</p> * <p>Company: www.trs.com.cn</p> * @author huanghongfa * @version 1.0 */public class OperateXML{ private Document docDOMSource = null; /** * 构造函数 */ public OperateXML() { super (); } /** * 构造函数 * @param docDOMSource 内存中Document对象 */ public OperateXML(Document docDOMSource) { super (); this.docDOMSource = docDOMSource; } /** * 设置DOMSource，以便对这个xml对象进行操作 * @param docDOMSource 内存中Document对象 */ public void setDOMSource(Document docDOMSource) { this.docDOMSource = docDOMSource; } /** * 设置DOMSource，以便对这个xml对象进行操作 * @param fDOMSource xml文件 */ public void setDOMSource(File fDOMSource) throws TException { try { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance (); DocumentBuilder builder = factory.newDocumentBuilder (); Document doc = builder.parse (fDOMSource); doc.normalize (); this.docDOMSource = doc; } catch(javax.xml.parsers.ParserConfigurationException pce) { pce.printStackTrace(); // throw new TException ("The parser was not configured correctly.", "", pce); //System.out.println("The parser was not configured correctly."); } catch(java.io.IOException ie) { ie.printStackTrace(); // throw new TException ("Cannot read input file.", "", ie); //System.out.println("Cannot read input file."); } catch(org.xml.sax.SAXException se) { se.printStackTrace();// throw new TException ("Problem parsing the file.", "", se); //System.out.println("Problem parsing the file."); } catch(java.lang.IllegalArgumentException ae) { ae.printStackTrace();// throw new TException ("Please specify an XML source.", "", ae); //System.out.println("Please specify an XML source."); } } /** * 设置DOMSource，以便对这个xml对象进行操作 * @param ByteArrayInputStream 可以通过如下方法得到 * ByteArrayInputStream bais = new ByteArrayInputStream(strGet.getBytes("GBK")); */ public void setDOMSource(ByteArrayInputStream bais) throws TException { try { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance (); DocumentBuilder builder = factory.newDocumentBuilder (); Document doc = builder.parse (bais); doc.normalize (); this.docDOMSource = doc; } catch(Exception ex) { ex.printStackTrace();// Logger.log("解释xml的时候发生错误，输入的字符串不符合xml格式！" + ex.toString (),"exp");// throw new TException ("解释xml的时候发生错误，输入的字符串不符合xml格式！" + ex.toString (), ""); } } /** * 设置DOMSource，以便对这个xml对象进行操作 * @param strXMLFileName xml文件名称，如：C:\\temp\\test.xml 格式 */ public void setDOMSource(String strXMLFileName) throws TException { try { File fDOMSource = new File (strXMLFileName); DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance (); DocumentBuilder builder = factory.newDocumentBuilder (); Document doc = builder.parse (fDOMSource); doc.normalize (); this.docDOMSource = doc; } catch(javax.xml.parsers.ParserConfigurationException pce) { pce.printStackTrace();// throw new TException ("The parser was not configured correctly.", "OperateXML,setDOMSource()"); } catch(java.io.IOException ie) { ie.printStackTrace();// throw new TException ("Cannot read input file.", "OperateXML,setDOMSource()"); } catch(org.xml.sax.SAXException se) { se.printStackTrace();// throw new TException ("Problem parsing the file.", "OperateXML,setDOMSource()"); } catch(java.lang.IllegalArgumentException ae) { ae.printStackTrace();// throw new TException ("Please specify an XML source.", "OperateXML,setDOMSource()"); } } /** * 设置DOMSource，以便对这个xml对象进行操作 * @param ByteArrayInputStream 可以通过如下方法得到 * ByteArrayInputStream bais = new ByteArrayInputStream(strGet.getBytes("GBK")); */ public void setDOMSource(InputStream is) throws TException { try { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance (); DocumentBuilder builder = factory.newDocumentBuilder (); Document doc = builder.parse (is); doc.normalize (); this.docDOMSource = doc; } catch(Exception ex) { ex.printStackTrace();// throw new TException ("解释xml的时候发生错误，输入的XML文件流格式错误！" + ex.toString (), ""); } } /** * 得到DOMSource * @return org.w3c.dom.Document */ public Document getDOMSource() { return this.docDOMSource; } /** * 通过置标名称，得到该置标节点的值 * @param strTargetName 该置标的名称 */ public String getValueByTargetName(String strTargetName) { String strValue = ""; NodeList nodelist = null; Node node; try { nodelist = docDOMSource.getElementsByTagName (strTargetName.trim ()); if(nodelist.getLength () != 0) { node = nodelist.item (0); nodelist = node.getChildNodes (); int i = nodelist.getLength (); if(i == 1) { if(node.getFirstChild () != null) { strValue = node.getFirstChild ().getNodeValue (); } } else { for(int j = 1; j < i; j++) { node = nodelist.item (j); if(node.getNodeType () == Node.CDATA_SECTION_NODE) { strValue = node.getNodeValue (); break; } } } } return strValue; } catch(DOMException ex) {// Logger.log(ex.getMessage(),"exp"); return null; } } /** * 通过置标名称，得到该置标节点的值 * @param strTargetName 该置标的名称 */ public Hashtable getChildrenNodeNameAndValueByTargetName(String strTargetName) { Hashtable ht = new Hashtable (); NodeList nodelist = null; Node node; int i, nSize; nodelist = docDOMSource.getElementsByTagName (strTargetName.trim ()); if(nodelist.getLength () != 0) { node = nodelist.item (0); nodelist = node.getChildNodes (); nSize = nodelist.getLength (); for(i = 0; i < nSize; i++) { node = nodelist.item (i); if(node!=null && node.getNodeType()!=Node.TEXT_NODE) { if(node.getFirstChild ()!=null) { ht.put (node.getNodeName (), node.getFirstChild ().getNodeValue ()); } else { ht.put (node.getNodeName (), ""); } } } } return ht; } /** * 通过置标名称，得到该置标节点的值 * @param strTargetName 该置标的名称 */ public String[] getChildrenNodeValuesByTargetName(String strTargetName) { String[] arrValue=null; NodeList nodeHList=null; NodeList nodelist = null; Node node; int i, nSize; nodeHList = docDOMSource.getElementsByTagName (strTargetName.trim ()); arrValue=new String[nodeHList.getLength ()]; if(nodeHList.getLength () != 0) { for(i=0;i<nodeHList.getLength();i++) { node = nodeHList.item (i); nodelist = node.getChildNodes (); if(nodelist.item(0)!=null) { if(nodelist.item (0).getNodeValue () == null) { arrValue[i] = ""; } else { arrValue[i] = nodelist.item (0).getNodeValue (); } } else { arrValue[i] =""; } } } return arrValue; } /** * 通过置标的路径，得到该置标节点的值 * @param strTargetPath 该置标的路径 * @param ch 路径的隔开符号,如：可以这样调用这个方法：getValueByTargetPath("xml/test/ok",'/'); * @return String 假如不存在，就为空“” */ public String getValueByTargetPath(String strTargetPath, int ch) { String strPath = strTargetPath.trim (); String strTargetName = null; NodeList nodelist = null; Node node = null; Element element = null; int nPosition = 0; String strValue = ""; //得到第一个节点元素（begin） nPosition = strPath.indexOf (ch); strTargetName = strPath.substring (0, nPosition); strPath = strPath.substring (nPosition + 1); nodelist = docDOMSource.getElementsByTagName (strTargetName); if(nodelist.getLength () == 0) { return null; } else { element = (Element) nodelist.item (0); } //得到第一个节点元素（end） //循环解释路径，得到最低层的节点的值(begin) while(!strPath.equals ("")) { nPosition = strPath.indexOf (ch); if(nPosition == -1) { strTargetName = strPath; nodelist = element.getElementsByTagName (strTargetName); if(nodelist.getLength () == 0) { return null; } else { node = nodelist.item (0); nodelist = node.getChildNodes (); int i = nodelist.getLength (); if(i == 1) { if(node.getFirstChild () != null) { strValue = node.getFirstChild ().getNodeValue (); } } else { for(int j = 1; j < i; j++) { node = nodelist.item (j); if(node.getNodeType () == Node.CDATA_SECTION_NODE) { strValue = node.getNodeValue (); break; } } } } strPath = ""; } else { strTargetName = strPath.substring (0, nPosition); nodelist = element.getElementsByTagName (strTargetName); if(nodelist.getLength () == 0) { return null; } else { element = (Element) nodelist.item (0); } strPath = strPath.substring (nPosition + 1); } } //循环解释路径，得到最低层的节点的值(end) return strValue; } /** * 通过置标名称，得到该置标在XML中是否存在. * @param strTargetName 该置标的名称 */ public int getElementExist(String strTargetName) { int int_Counts=0; NodeList nodelist = null; try { nodelist = docDOMSource.getElementsByTagName (strTargetName.trim ()); int_Counts=nodelist.getLength (); } catch(DOMException ex) {// Logger.log (ex.getMessage (), "exp"); int_Counts=0; } finally { return int_Counts; } }} 1 楼 soft234 2012-07-04 本想用下看看 可是没jar包