dom4j创建、修改、格式化输出mxl文件

package dom4j_3;import java.io.File;import java.io.FileWriter;import java.io.Writer;import java.util.Iterator;import java.util.List;import org.dom4j.Attribute;import org.dom4j.Document;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.OutputFormat;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;/** * @description ：创建一个XML文档; *      对这个XML文档的属性和属性值进行修改、删除等操作; *      对XML文档进行统一格式化 * @date ： 2013-12-23下午08:20:21 * @author ：黑马白浪 */public class Dom4jDemo {/*** 建立一个XML文档,文档名由输入参数决定* @param filename 需建立的文件名* @return 返回操作结果, 0表失败, 1表成功*/public int createXMLFile(String filename){/** 返回操作结果, 0表失败, 1表成功 */int returnValue = 0;/** 建立document对象 */Document document = DocumentHelper.createDocument();/** 建立XML文档的根books */Element booksElement = document.addElement("books");/** 加入一行注释 */booksElement.addComment("This is a test for dom4j, holen, 2008.4.23");/** 加入第一个book节点 */Element bookElement = booksElement.addElement("book");/** 加入show参数内容 */bookElement.addAttribute("show","yes");/** 加入title节点 */Element titleElement = bookElement.addElement("title");/** 为title设置内容 */titleElement.setText("Dom4j Tutorials");/** 类似的完成后两个book */bookElement = booksElement.addElement("book");bookElement.addAttribute("show","yes");titleElement = bookElement.addElement("title");titleElement.setText("Lucene Studing");bookElement = booksElement.addElement("book");bookElement.addAttribute("show","no");titleElement = bookElement.addElement("title");titleElement.setText("Lucene in Action");/** 加入owner节点 */Element ownerElement = booksElement.addElement("owner");ownerElement.setText("O'Reilly");try{/** 将document中的内容写入文件中 */Writer fileWriter=new FileWriter(new File(filename));XMLWriter writer = new XMLWriter(fileWriter);writer.write(document);writer.close();/** 执行成功,需返回1 */returnValue = 1;}catch(Exception ex){ex.printStackTrace();}return returnValue;}/** * * 修改XML文件中内容,并另存为一个新文件* 重点掌握dom4j中如何添加节点,修改节点,删除节点* @param filename 修改对象文件* @param newfilename 修改后另存为该文件* @return 返回操作结果, 0表失败, 1表成功* */public int ModiXMLFile(String filename,String newfilename){int returnValue = 0;try{SAXReader saxReader = new SAXReader(); Document document = saxReader.read(new File(filename));/** 修改内容之一:如果book节点中show参数的内容为yes,则修改成no *//** 先用xpath查找对象 */List list = document.selectNodes("/books/book/@show" ); Iterator iter = list.iterator();while(iter.hasNext()){Attribute attribute = (Attribute)iter.next();if(attribute.getValue().equals("yes")){attribute.setValue("no");} }/*** 修改内容之二:把owner项内容改为Tshinghua* 并在owner节点中加入date节点,date节点的内容为2004-09-11,还为date节点添加一个参数type*/list = document.selectNodes("/books/owner" );iter = list.iterator();if(iter.hasNext()){Element ownerElement = (Element)iter.next();ownerElement.setText("Tshinghua");Element dateElement = ownerElement.addElement("date");dateElement.setText("2004-09-11");dateElement.addAttribute("type","Gregorian calendar");}/** 修改内容之三:若title内容为Dom4j Tutorials,则删除该节点 */list = document.selectNodes("/books/book");iter = list.iterator();while(iter.hasNext()){Element bookElement = (Element)iter.next();Iterator iterator = bookElement.elementIterator("title");while(iterator.hasNext()){Element titleElement=(Element)iterator.next();if(titleElement.getText().equals("Dom4j Tutorials")){bookElement.remove(titleElement);}}} try{/** 将document中的内容写入文件中 */XMLWriter writer = new XMLWriter(new FileWriter(new File(newfilename)));writer.write(document);writer.close();/** 执行成功,需返回1 */returnValue = 1;}catch(Exception ex){ex.printStackTrace();}}catch(Exception ex){ex.printStackTrace();}return returnValue;}/*** 格式化XML文档,并解决中文问题* @param filename* @return*/public int formatXMLFile(String filename){int returnValue = 0;try{SAXReader saxReader = new SAXReader(); Document document = saxReader.read(new File(filename));XMLWriter output = null;/** 格式化输出,类型IE浏览一样 */OutputFormat format = OutputFormat.createPrettyPrint();/** 指定XML字符集编码 */format.setEncoding("UTF-8");output = new XMLWriter(new FileWriter(new File(filename)),format);output.write(document);output.close(); /** 执行成功,需返回1 */returnValue = 1; }catch(Exception ex){ex.printStackTrace();}return returnValue;}public static void main(String[] args) {String filePath=System.getProperty("user.dir")+"/src/dom4j_3/output/";Dom4jDemo temp = new Dom4jDemo();//创建domtest.xml文件System.out.println(temp.createXMLFile(filePath+"/domtest.xml"));//修改domtest.xml文件，另存为domtest_modified.xmlSystem.out.println(temp.ModiXMLFile(filePath+"/domtest.xml",filePath+"/domtest_modified.xml"));//格式化两个文件System.out.println(temp.formatXMLFile(filePath+"/domtest.xml"));System.out.println(temp.formatXMLFile(filePath+"/domtest_modified.xml"));}}