Java操作xml文件

 Bbsxml.java

public class Bbsxml { 
private String imgsrc; 
private String title; 
private String url; 
 
    public String getTitle() { 
    return title; 
} 
public void setTitle(String title) { 
    this.title = title; 
} 
public String getUrl() { 
    return url; 
} 
public void setUrl(String url) { 
    this.url = url; 
} 
    public String getImgsrc() { 
    return imgsrc; 
} 
public void setImgString imgsrc) { < /span>
    this.imgsrc = imgsrc; 
} 
 
    public static void main(String[] args) { 
        // TODO Auto-generated method stub 
 
    } 
 
} 

 

XmlOprate.java

public class XmlOprate { 
    Document doc; 
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 
    DocumentBuilder builder; 
    NodeList imags; 
    String path; 
 
    public NodeList getImags() { 
        return imags; 
    } 
 
    public void setImags(NodeList imags) { 
        this.imags = imags; 
    } 
 
    /** 
     * 构造方法 
     *  
     * @param path 
     *            :xml文件的路径 
     * @param nodes 
     *            ：要解析的xml节点名称 
     */ 
    public XmlOprate(String path) { 
        super(); 
        this.path = path; 
        // System.out.println(System.getProperty("user.dir")); 
    } 
 
    /** 
     * 解析XML 
     *  
     * @param path 
     */ 
    public void readXml() { 
        try { 
            builder = factory.newDocumentBuilder(); 
            Document doc = builder.parse(path); 
            doc.normalize(); 
 
            NodeList imags = doc.getElementsByTagName("imags"); 
            this.setImags(imags); 
            for (int i = 0; i < imags.getLength(); i++) { 
                Element link = (Element) imags.item(i); 
                System.out.print("imgsrc=\'#\'" /span>); 
                System.out.println(link.getElementsByTagName("imgsrc").item(0) 
                        .getFirstChild().getNodeValue()); 
                System.out.print("title: "); 
                System.out.println(link.getElementsByTagName("title").item(0) 
                        .getFirstChild().getNodeValue()); 
                System.out.print("url: "); 
                System.out.println(link.getElementsByTagName("url").item(0) 
                        .getFirstChild().getNodeValue()); 
                System.out.println(); 
            } 
        } catch (ParserConfigurationException e) { 
            e.printStackTrace(); 
        } catch (SAXException e) { 
            e.printStackTrace(); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        } 
 
    } 
 
    /** 
     * http://www.ablanxue.com 解析XML，返回List集合，Bbsxm 
     * 只是一个普通的javabean,只提供get，set的方法l，在此不写出，可自己创建了 
     *  
     * @param path 
     */ 
 
    public List<Bbsxml> xml() { 
        List<Bbsxml> list = null; 
        list = new ArrayList<Bbsxml>(); 
        try { 
            builder = factory.newDocumentBuilder(); 
            Document doc = builder.parse(path); 
            doc.normalize(); 
            Bbsxml bbsxml = null; 
            NodeList imags = doc.getElementsByTagName("imags"); 
            this.setImags(imags); 
            for (int i = imags.getLength() - 1; i > -1; i--) { 
                Element link = (Element) imags.item(i); 
 
                bbsxml = new Bbsxml(); 
                bbsxml.setImglink.getElementsByTagName("imgsrc").item(0) 
                        .getFirstChild().getNodeValue()); 
                bbsxml.setTitle(link.getElementsByTagName("title").item(0) 
                        .getFirstChild().getNodeValue()); 
                bbsxml.setUrl(link.getElementsByTagName("url").item(0) 
                        .getFirstChild().getNodeValue()); 
                list.add(bbsxml); 
 
            } 
        } catch (ParserConfigurationException e) { 
            e.printStackTrace(); 
        } catch (SAXException e) { 
            e.printStackTrace(); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        } 
 
        return list; 
    } 
 
    /** 
     * addCode 
     *  
     * @param path 
     */ 
    public void addXmlCode(String imgsrc, String title, String url) { 
 
        try { 
            builder = factory.newDocumentBuilder(); 
            Document doc = builder.parse(path); 
            doc.normalize(); 
 
            Text textseg; 
            Element imag = doc.createElement("imags"); 
 
            Element linkimgsrc = doc.createElement("imgsrc"); 
            textseg = doc.createTextNode(imgsrc); 
            linkimgsrc.appendChild(textseg); 
            imag.appendChild(linkimgsrc); 
 
            Element linktitle = doc.createElement("title"); 
            textseg = doc.createTextNode(title); 
            linktitle.appendChild(textseg); 
            imag.appendChild(linktitle); 
 
            Element linkurl = doc.createElement("url"); 
            textseg = doc.createTextNode(url); 
            linkurl.appendChild(textseg); 
            imag.appendChild(linkurl); 
 
            doc.getDocumentElement().appendChild(imag); 
 
            TransformerFactory tFactory = TransformerFactory.newInstance(); 
            Transformer transformer; 
 
            transformer = tFactory.newTransformer(); 
            DOMSource source = new DOMSource(doc); 
            StreamResult result = new StreamResult(new java.io.File(path)); 
            transformer.transform(source, result); 
        } catch (Exception e) { 
 
        } 
    } 
 
    /** 
     * delete xml code 
     *  
     * @param path 
     */ 
    public void delXmlCode() { 
 
        try { 
            builder = factory.newDocumentBuilder(); 
        } catch (ParserConfigurationException e) { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } 
        try { 
            doc = builder.parse(path); 
        } catch (SAXException e) { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } catch (IOException e) { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } 
        doc.normalize(); 
        NodeList imags = doc.getElementsByTagName("imags"); 
 
        // if (imags.getLength() > 9) { 
        // 删除节点 
        Element elink = (Element) imags.item(0); 
        elink.removeChild(elink.getElementsByTagName("imgsrc").item(0)); 
        elink.removeChild(elink.getElementsByTagName("title").item(0)); 
        elink.removeChild(elink.getElementsByTagName("url").item(0)); 
 
        doc.getFirstChild().removeChild(elink); 
 
        TransformerFactory tFactory = TransformerFactory.newInstance(); 
        Transformer transformer = null; 
        try { 
            transformer = tFactory.newTransformer(); 
        } catch (TransformerConfigurationException e) { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } 
        DOMSource source = new DOMSource(doc); 
        StreamResult result = new StreamResult(new java.io.File(path)); 
        try { 
            transformer.transform(source, result); 
        } catch (TransformerException e) { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } 
        // } 
 
    } 
 
    public static void main(String[] args) { 
        XmlOprate xm = new XmlOprate("data.xml"); 
        // xm.readXml(); 
        // xm.addXmlCode("images/1.gif", "xuexiii", "http://www.baidu.com"); 
        xm.delXmlCode(); 
    } 
 
} 

　　

data.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?> 
<root> 
    <imags> 
        <imgsrc>images/ad-02.jpg</imgsrc> 
        <title>java读取xml文件</title> 
        <url>http://www.ablanxue.com</url> 
    </imags> 
    <imags> 
        <imgsrc>images/1.gif</imgsrc> 
        <title>xuexiii</title> 
        <url>http://www.baidu.com</url> 
        </imags> 
    </root> 

JSP页面直接操作 xml.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" 
    pageEncoding="UTF-8"%> 
<%@ page import="javax.xml.parsers.*"%> 
<%@ page import="org.w3c.dom.*"%> 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 
<title>Insert title here</title> 
<% 
    //建立一个解析器工厂 
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 
    //获得一个具体的解析器对象 
    DocumentBuilder builder = factory.newDocumentBuilder(); 
    //对XML文档进行解析，获得Document对象 
    Document doc = builder.parse(request.getRealPath("/")+ "WEB-INF/data.xml"); 
    doc.normalize(); 
    //获取所有的book元素列表 
    NodeList books = doc.getElementsByTagName("book"); 
%> 
</head> 
<body> 
    <h2>图书列表</h2> 
    <br> 
    <% 
        for (int i = 0; i < books.getLength(); i++) { 
            //获取一个book元素 
            Element book = (Element) books.item(i); 
            //以下获取book的子元素，并输出 
            out.print("title:"); 
            out.println(book.getElementsByTagName("title").item(0).getFirstChild().getNodeValue()); 
            out.print("<br>"); 
            out.print("URL:"); 
            out.println(book.getElementsByTagName("url").item(0).getFirstChild().getNodeValue()); 
            out.print("<br>"); 
            out.print("Author:"); 
            out.println(book.getElementsByTagName("author").item(0).getFirstChild().getNodeValue()); 
            out.print("<br>"); 
            out.print("Date:"); 
            Element bookdate = (Element) book.getElementsByTagName("date").item(0); 
            String day = book.getElementsByTagName("day").item(0).getFirstChild().getNodeValue(); 
            String month = book.getElementsByTagName("month").item(0).getFirstChild().getNodeValue(); 
            String year = book.getElementsByTagName("year").item(0).getFirstChild().getNodeValue(); 
            out.println(day + "-" + month + "-" + year); 
            out.print("<br>"); 
            out.print("Description:"); 
            out.println(book.getElementsByTagName("description").item(0).getFirstChild().getNodeValue()); 
            out.print("<br><br>"); 
        } 
    %> 
</body> 
</html>