Flex完全自学手册光盘代码

package com.silence.myFile; import java.io.StringWriter; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; 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.w3c.dom.CDATASection; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import com.sun.org.apache.xpath.internal.XPathAPI; public class XMLUtil { private Document doc; private Document doc1; private Element root; private Element root1; private String address; //添加用户 public String addUser(String uName,String uPass,String uEmail,String uPhone,String uAddress) { address = "D:/tomcat-5.5.23/webapps/flex/flexStore/data/userInfo.xml"; parseXML(address); Element user = doc.createElement("user"); user.setAttribute("name",uName); //创建密码节点 Element pass = doc.createElement("password"); pass.setAttribute("value",uPass); user.appendChild(pass); //创建Email Element mail = doc.createElement("email"); mail.setAttribute("value",uEmail); user.appendChild(mail); //创建电话 Element phone = doc.createElement("phone"); phone.setAttribute("value",uPhone); user.appendChild(phone); //创建地址 Element address = doc.createElement("address"); address.setAttribute("value",uAddress); user.appendChild(address); root.appendChild(user); saveXML(); return "添加成功"; } //修改用户信息 public String updateUser(String uName,String uPass,String uEmail,String uPhone,String uAddress){ address = "D:/tomcat-5.5.23/webapps/flex/flexStore/data/userInfo.xml"; parseXML(address); XPathAPI x= new XPathAPI(); try { Element num_e = (Element) XPathAPI.selectSingleNode(root, "user[@name='"+uName+"']"); root.removeChild(num_e); saveXML(); addUser(uName,uPass,uEmail,uPhone,uAddress); return "添加成功"; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); return "添加失败"; } } //添加用户评论 public String addComments(String bName,String comment,String user,String ts){ address = "D:/tomcat-5.5.23/webapps/flex/flexStore/data/comments.xml"; parseXML(address); Element num_e ; XPathAPI x= new XPathAPI(); try{ num_e = (Element) XPathAPI.selectSingleNode(root, "book[@name='"+bName+"']"); if(num_e ==null){ num_e=doc.createElement("book"); num_e.setAttribute("name",bName); root.appendChild(num_e); } Element e = doc.createElement("comment"); e.setAttribute("user",user); e.setAttribute("time",ts); CDATASection cData = doc.createCDATASection(comment); e.appendChild(cData); num_e.appendChild(e); saveXML(); return "添加成功"; } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); return "添加失败"; } } //保存XML public void saveXML() { try { TransformerFactory xformFactory = TransformerFactory.newInstance(); Transformer idTransform = xformFactory.newTransformer(); Source input = new DOMSource(doc); Result output = new StreamResult(address); idTransform.transform(input, output); } catch (Exception e) { e.printStackTrace(); } } //解析XML public void parseXML(String adr) { try { System.out.println("begin to parse xml"); DocumentBuilderFactory db1 = DocumentBuilderFactory.newInstance(); DocumentBuilder db = db1.newDocumentBuilder(); System.out.println(adr); doc = db.parse(adr); root = doc.getDocumentElement(); } catch (Exception e) { e.printStackTrace(); } } }