|
在我工作过程中,遇到了对临时存储产品信息的XML文件进行操作的问题.其中就有对XML文件的解析操作,考虑到用DOM或SAX比较麻烦,于是我选择了用jdom进行解析.因为我的XML文件结构比较简单,仅有两层,而且没有复杂的属性,所以没有用到里面太多的方法,只希望能够抛砖引玉,给初学者一点帮助.
下面我就把大概的实现过程说一说. 一.实现解析xml文件的JavaBean(XMLBean): 我把对存放产品信息的xml文档的全部操作都写在了XMLBean()里面,包括添加,修改,删除一条记录,查看相关记录等操作.具体实现的代码如下: package xml; import java.io.*; import java.util.*; import org.jdom.*; import org.jdom.output.*; import org.jdom.input.*; import javax.servlet.*; import javax.servlet.http.*; /** * <p>Title:XMLBean</p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2005</p> * @author lihs * @version 1.0 **/ /* ** **通过往XML文件里面添加,删除，修改记录。从而实现对生产部门提交产品信息的处理。 */ public class XMLBean{ private String ProduceID,ProduceName,ProduceClass,ProduceType,ProduceColor,Baozhiqi,ProduceNum,ProduceDep,ProduceDate; public String getProduceID() { return ProduceID;} public String getProduceName() { return ProduceName;} public String getProduceClass() { return ProduceClass;} public String getProduceType() { return ProduceType;} public String getProduceColor() { return ProduceColor;} public String getBaozhiqi() { return Baozhiqi;} public String getProduceNum() { return ProduceNum;} public String getProduceDep() { return ProduceDep;} public String getProduceDate() { return ProduceDate;} public void setProduceID(String produceid) { this.ProduceID =produceid ; } public void setProduceName(String producename) { this.ProduceName =producename; } public void setProduceClass(String produceclass) { this.ProduceClass =produceclass ; } public void setProduceType(String producetype) { this.ProduceType =producetype ; } public void setProduceColor(String producecolor) { this.ProduceColor =producecolor ; } public void setBaozhiqi(String baozhiqi) { this.Baozhiqi =baozhiqi ; } public void setProduceNum(String producenum) { this.ProduceNum =producenum ; } public void setProduceDep(String producedep) { this.ProduceDep =producedep ; } public void setProduceDate(String producedate) { this.ProduceDate =producedate ; } public XMLBean(){} /** * 通过传入路径读取XML文件的内容。 */ public Vector LoadXML(String path)throws Exception{ Vector xmlVector = null; FileInputStream fi = null; try{ fi = new FileInputStream(path); xmlVector = new Vector(); SAXBuilder sb = new SAXBuilder(); Document doc = sb.build(fi); Element root = doc.getRootElement(); //获取根节点 List produces = root.getChildren(); //获取根节点下面的所有子元素 Element produce =null; XMLBean xml =null; for(int i=0;i<produces.size();i++){ xml = new XMLBean(); produce = (Element)produces.get(i ); //取得指定的孩子节点信息 xml.setProduceID(produce.getChild("ProduceID").getText()); xml.setProduceName(produce.getChild("ProduceName").getText()); xml.setProduceClass(produce.getChild("ProduceClass").getText()); xml.setProduceType(produce.getChild("ProduceType").getText()); xml.setProduceColor(produce.getChild("ProduceColor").getText()); xml.setBaozhiqi(produce.getChild("Baozhiqi").getText()); xml.setProduceNum(produce.getChild("ProduceNum").getText()); xml.setProduceDep(produce.getChild("ProduceDep").getText()); xml.setProduceDate(produce.getChild("ProduceDate").getText()); xmlVector.add(xml); } } catch(Exception e){ System.err.println(e+"error"); } finally{ try{ fi.close(); } catch(Exception e){ e.printStackTrace(); } } return xmlVector; } /** * 删除指定的元素信息 */ public static void DelXML(HttpServletRequest request)throws Exception{ FileInputStream fi = null; FileOutputStream fo = null; try{ String path=request.getParameter("path"); int xmlid=Integer.parseInt(request.getParameter("id")); fi = new FileInputStream(path); SAXBuilder sb = new SAXBuilder(); Document doc = sb.build(fi); Element root = doc.getRootElement(); List produces = root.getChildren(); produces.remove(xmlid); String indent = ""; boolean newLines = true; XMLOutputter outp = new XMLOutputter(indent,newLines,"GBK"); fo=new FileOutputStream(path); outp.output(doc,fo); } catch(Exception e){ System.err.println(e+"error"); } finally{ try{ fi.close(); fo.close(); } catch(Exception e){ e.printStackTrace(); } } } /** * 往XML文件中添加一条记录产品信息 **/ public static void AddXML(HttpServletRequest request)throws Exception{ FileInputStream fi = null; FileOutputStream fo = null; try{ XMLBean bean=new XMLBean(); String path=request.getParameter("path"); fi = new FileInputStream(path); SAXBuilder sb = new SAXBuilder(); Document doc = sb.build(fi); Element root = doc.getRootElement(); // List produces = root.getChildren(); // String produceid=bean.toChinese(request.getParameter("ProduceID")); String producename=bean.toChinese(request.getParameter("ProduceName")); String produceclass=bean.toChinese(request.getParameter("ProduceClass")); String producetype=bean.toChinese(request.getParameter("ProduceType")); String producecolor=bean.toChinese(request.getParameter("ProduceColor")); String baozhiqi=bean.toChinese(request.getParameter("Baozhiqi")); String producenum=bean.toChinese(request.getParameter("ProduceNum")); String producedep=bean.toChinese(request.getParameter("ProduceDep")); String producedate=bean.toChinese(request.getParameter("ProduceDate")); Text newtext; Element newproduce= new Element("Produce"); Element newproduceid= new Element("ProduceID"); newproduceid.setText(produceid); newproduce.addContent(newproduceid); // Element newproducename= new Element("ProduceName"); newproducename.setText(producename); newproduce.addContent(newproducename); // Element newproduceclass= new Element("ProduceClass"); newproduceclass.setText(produceclass); newproduce.addContent(newproduceclass); // Element newproducetype= new Element("ProduceType"); newproducetype.setText(producetype); newproduce.addContent(newproducetype); // Element newproducecolor= new Element("ProduceColor"); newproducecolor.setText(producecolor); newproduce.addContent(newproducecolor); // Element newbaozhiqi= new Element("Baozhiqi"); newbaozhiqi.setText(baozhiqi); newproduce.addContent(newbaozhiqi); // Element newproducenum= new Element("ProduceNum"); newproducenum.setText(producenum); newproduce.addContent(newproducenum); // Element newproducedep= new Element("ProduceDep"); newproducedep.setText(producedep); newproduce.addContent(newproducedep); // Element newproducedate= new Element("ProduceDate"); newproducedate.setText(producedate); newproduce.addContent(newproducedate); produces.add(newproduce);// String indent = "\n"; boolean newLines = true; XMLOutputter outp = new XMLOutputter(indent,newLines,"GBK"); fo=new FileOutputStream(path); outp.output(doc,fo); } catch(Exception e){ System.err.println(e+"error"); } finally{ try{ fi.close(); fo.close(); } catch(Exception e){ e.printStackTrace(); } } } /** * 更改XML中指定的记录的信息 */ public static void EditXML(HttpServletRequest request)throws Exception{ FileInputStream fi = null; FileOutputStream fo = null; try{ XMLBean bean=new XMLBean(); String path=request.getParameter("path"); int xmlid=Integer.parseInt(request.getParameter("id")); fi = new FileInputStream(path); SAXBuilder sb = new SAXBuilder(); Document doc = sb.build(fi); Element root = doc.getRootElement(); // List produces = root.getChildren(); // Element produce=(Element)produces.get(xmlid); String produceid=bean.toChinese(request.getParameter("ProduceID")); String producename=bean.toChinese(request.getParameter("ProduceName")); String produceclass=bean.toChinese(request.getParameter("ProduceClass")); String producetype=bean.toChinese(request.getParameter("ProduceType")); String producecolor=bean.toChinese(request.getParameter("ProduceColor")); String baozhiqi=bean.toChinese(request.getParameter("Baozhiqi")); String producenum=bean.toChinese(request.getParameter("ProduceNum")); String producedep=bean.toChinese(request.getParameter("ProduceDep")); String producedate=bean.toChinese(request.getParameter("ProduceDate")); Text newtext; Element newproduceid= produce.getChild("ProduceID"); newproduceid.setText(produceid); // Element newproducename=produce.getChild("ProduceName"); newproducename.setText(producename); // Element newproduceclass=produce.getChild("ProduceClass"); newproduceclass.setText(produceclass); // Element newproducetype=produce.getChild("ProduceType"); newproducetype.setText(producetype); // Element newproducecolor=produce.getChild("ProduceColor"); newproducecolor.setText(producecolor); // Element newbaozhiqi= produce.getChild("Baozhiqi"); newbaozhiqi.setText(baozhiqi); // Element newproducenum=produce.getChild("ProduceNum"); newproducenum.setText(producenum); // Element newproducedep=produce.getChild("ProduceDep"); newproducedep.setText(producedep); // Element newproducedate=produce.getChild("ProduceDate"); newproducedate.setText(producedate); // books.set(xmlid,book); String indent = "\n"; boolean newLines = true; XMLOutputter outp = new XMLOutputter(indent,newLines,"GBK"); fo=new FileOutputStream(path); outp.output(doc,fo); } catch(Exception e){ System.err.println(e+"error"); } finally{ try{ fi.close(); fo.close(); } catch(Exception e){ e.printStackTrace(); } } } } 在这些方法中有很多重复的地方,因为是练习没有考虑太多,读者可以有选择的看一下. 二.调用上面写的JavaBean的JSP程序如下: 得到的结果是一个产品列表页面,它包含了XML文件中所有的产品记录,每条记录都有通向该记录详细信息的页面.同时每条记录后面都有查看,编辑,删除的链接,实现的方法都写在了上面的JavaBean里了,在JSP页面里面仅需要传给它相应参数即可. 效果如下: 1.产品列表 2.产品详细信息 <%@ page contentType="text/html; charset=gb2312" language="java" errorPage="" %> <%@ page language="java" import="java.util.*,xml.*"%> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>产品管理</title> </head> <LINK href="../images/TBspace.css" type=text/css rel=stylesheet> <body> <center><table width="85%" height="96" border="0" align="center"> <tr> <td height="92"><img src="../image/common/produce_head.jpg" width="638" height="90"></td> </tr> </table> <span class="style1">录入请求中的产品信息如下</span> <table border="1" cellspacing="0" width="90%" bordercolorlight="#000000" bordercolordark="#FFFFFF" cellpadding="0"> <tr> <td width="17%" align="center" bgcolor="#D0D0D0" >产品编号</td> <td width="25%" align="center" bgcolor="#D0D0D0" >产品名称</td> <td width="19%" align="center" bgcolor="#D0D0D0">产品类别</td> <td width="20%" align="center" bgcolor="#D0D0D0">生产部门</td> <td align="center" bgcolor="#D0D0D0" >查看</td> <td align="center" bgcolor="#D0D0D0">编辑</td> <td align="center" bgcolor="#D0D0D0">删除</td> </tr> <% String path =application.getRealPath("/")+"produce.xml"; XMLBean xml=new XMLBean(); Vector xmlall=xml.LoadXML(path); for(int i=0;i<xmlall.size();i++){ xml=(XMLBean)xmlall.elementAt(i ); %> <tr> <td width="17%" align="center" ><%=xml.getProduceID()%></td> <td width="25%" align="center" ><a href="showproduce.jsp?id=<%=i%>&path=<%=path%>"><%=xml.getProduceName()%></a></td> <td width="19%" align="center" ><%=xml.getProduceClass()%></td> <td width="20%" align="center" ><%=xml.getProduceDep()%></td> <td align="center" ><a href="showproduce.jsp?id=<%=i%>&path=<%=path%>">view</a></td> <td align="center" ><a href="updateproduce.jsp?ProduceID=<%=xml.getProduceID()%>&id=<%=i%>&path=<%=path%>">edit</a></td> <td align="center" ><a href="okdeleteproduce.jsp?id=<%=i%>&path=<%=path%>">delete</a></td> </tr> <%}%> </table> <input type="hidden" name="path" value="<%=path%>"> </center> </body> </html> 三.存放产品信息的XML文件produce.xml如下: <?xml version="1.0" encoding="GBK"?> <Produces> <Produce> <ProduceID>PW0005</ProduceID> <ProduceName>CD绿毒女士 50ml</ProduceName> <ProduceClass>女式</ProduceClass> <ProduceType>50ml</ProduceType> <ProduceColor>粉红</ProduceColor> <Baozhiqi>5</Baozhiqi> <ProduceNum>480</ProduceNum> <ProduceDep>第二事业部</ProduceDep> <ProduceDate>2005-05-26</ProduceDate> </Produce> <Produce>....</Produce> </Produces> 以上是本人的一点小总结,因为水平有限,不足还请大家谅解,谢谢! 本文引用通告地址： http://blog.csdn.net/chensheng913/services/trackbacks/407148.aspx |
|
|
来自： douli > 《java_XML》
