学步园

用dom4j操作xml文件的时候，记得要导入dom4j.jar的jar包

package com.newbbs.xml;</p> <p>import java.io.File;<br /> import java.io.FileWriter;<br /> import java.util.List;<br /> import org.dom4j.Document;<br /> import org.dom4j.DocumentException;<br /> import org.dom4j.DocumentHelper;<br /> import org.dom4j.Element;<br /> import org.dom4j.io.OutputFormat;<br /> import org.dom4j.io.SAXReader;<br /> import org.dom4j.io.XMLWriter;<br /> import com.newbbs.model.BbsUser;<br /> import com.newbbs.utils.AppConf;<br /> import com.newbbs.utils.DateUtil;</p> <p>public class XMLOperation<br /> {<br /> /**<br /> * 把用户的信息存放到xml<br /> * @param user<br /> * @return 操作成功或者失败<br /> */<br /> public String writeObjectToXml(BbsUser user)<br /> {<br /> /** 建立document对象 */<br /> Document document = DocumentHelper.createDocument();<br /> /** 建立XML文档的根userInfo */<br /> Element userElement = document.addElement("UserInfo");</p> <p> /** 加入第一个userid节点 */<br /> Element useridElement = userElement.addElement("userId");<br /> useridElement.addText(user.getUserid());</p> <p> /** 加入第二个userTitle节点 */<br /> Element userTitleElement = userElement.addElement("userTitle");<br /> userTitleElement.addText(user.getUsertitle());</p> <p> /** 加入第三个userPass节点 */<br /> Element userPassElement = userElement.addElement("userPass");<br /> userPassElement.addText(user.getUserpass());</p> <p> /** 加入第四个realName节点 */<br /> Element realNameElement = userElement.addElement("realName");<br /> realNameElement.addText(user.getRealname());</p> <p> /** 加入第五个score节点 */<br /> Element scoreElement = userElement.addElement("score");<br /> scoreElement.addText(user.getScore().toString());</p> <p> /** 加入第六个regTime节点 */<br /> Element regTimeElement = userElement.addElement("regTime");<br /> regTimeElement.addText(user.getRegTime().toString());</p> <p> /** 加入第七个loginTime节点 */<br /> Element loginTimeElement = userElement.addElement("loginTime");<br /> loginTimeElement.addText(user.getLoginTime().toString());</p> <p> /** 加入第八个posts节点 */<br /> Element postsElement = userElement.addElement("posts");<br /> postsElement.addText(user.getPosts().toString());</p> <p> /** 加入第九个reposts节点 */<br /> Element repostsElement = userElement.addElement("reposts");<br /> repostsElement.addText(user.getReposts().toString());</p> <p> /** 加入第十个lastPostTime节点 */<br /> Element lastPostTimeElement = userElement.addElement("lastPostTime");<br /> lastPostTimeElement.addText(user.getLastposttime().toString());</p> <p> try<br /> {<br /> String file =AppConf.getconf().get("basePath")+"/newbss/userInfoXML/"+user.getUserid()+".xml";<br /> /** 将document中的内容写入文件中 */<br /> OutputFormat format = OutputFormat.createPrettyPrint();<br /> format.setEncoding("gbk");<br /> XMLWriter writer = new XMLWriter(new FileWriter(new File(file)),format);<br /> writer.write(document);<br /> writer.close();<br /> return "写入XML成功";<br /> }catch(Exception ex){<br /> ex.printStackTrace();<br /> return "写入XML失败";<br /> }<br /> }</p> <p> public BbsUser readXmltoObject(String userid)<br /> {<br /> DateUtil dateUtil = new DateUtil();<br /> String file = AppConf.getconf().get("basePath")+"/newbss/userInfoXML/"+userid+".xml";<br /> SAXReader reader = new SAXReader();<br /> try {<br /> Document document = reader.read(new File(file));<br /> Element root = document.getRootElement();<br /> BbsUser user = new BbsUser();<br /> List list = root.elements();<br /> for(int i = 0; i < list.size(); i++)<br /> {<br /> Element element = (Element)list.get(i);<br /> if(i == 0)<br /> {<br /> user.setUserid(element.getText());<br /> continue;<br /> }<br /> if(i == 1)<br /> {<br /> user.setUsertitle(element.getText());<br /> continue;<br /> }<br /> if(i == 2)<br /> {<br /> user.setUserpass(element.getText());<br /> continue;<br /> }<br /> if(i == 3)<br /> {<br /> user.setRealname(element.getText());<br /> continue;<br /> }<br /> if(i == 4)<br /> {<br /> user.setScore(new Integer(element.getText()));<br /> continue;<br /> }<br /> if(i == 5)<br /> {<br /> user.setRegTime(dateUtil.getDateTimeFromStr(element.getText()));<br /> continue;<br /> }<br /> if(i == 6)<br /> {<br /> user.setLoginTime(dateUtil.getDateTimeFromStr(element.getText()));<br /> continue;<br /> }<br /> if(i == 7)<br /> {<br /> user.setPosts(new Integer(element.getText()));<br /> continue;<br /> }<br /> if(i == 8)<br /> {<br /> user.setReposts(new Integer(element.getText()));<br /> continue;<br /> }<br /> if(i == 9)<br /> {<br /> user.setLastposttime(dateUtil.getDateTimeFromStr(element.getText()));<br /> continue;<br /> }<br /> }<br /> return user;<br /> } catch (DocumentException e) {<br /> e.printStackTrace();<br /> return null;<br /> }<br /> }<br /> }<br />