xml與java

input.xml檔案

<?xml version="1.0" encoding="GB2312"?>
<學生花名冊>
<學生 性別 = "男">
<姓名>李華</姓名> 
<年齡>14</年齡>
<電話>6287555</電話>
</學生>
<學生 性別 = "男">
<姓名>張三</姓名>
<年齡>16</年齡>
<電話>8273425</電話>
</學生>
</學生花名冊>

StudentBean .java

package xmlTest;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class StudentBean {
  private String sex;
  private String name;
  private int age;
  private String phone;
  public StudentBean() {
  }
  public String getSex() {
    return sex;
  }
  public void setSex(String sex) {
    this.sex = sex;
  }
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public int getAge() {
    return age;
  }
  public void setAge(int age) {
    this.age = age;
  }
  public String getPhone() {
    return phone;
  }
  public void setPhone(String phone) {
    this.phone = phone;
  }

}

XMLTest.java

package xmlTest;

import java.io.*;
//Java基礎包，包含各種IO操作
import java.util.*;
//Java基礎包，包含各種標準資料結構操作
import javax.xml.parsers.*;
//XML解析器介面
import org.w3c.dom.*;
//XML的DOM實現
import org.apache.crimson.tree.XmlDocument;
//寫XML檔案要用到

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class XMLTest {
  public XMLTest() {
  }
  private Vector student_Vector;
  //讀取xml檔案
  private void readXMLFile(String inFile) throws Exception {
  //為解析XML作準備，
  //建立DocumentBuilderFactory執行個體,指定DocumentBuilder
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder db = null;
    try {
      db = dbf.newDocumentBuilder();
    }
    catch (ParserConfigurationException pce) {//出異常時輸出異常資訊，然後退出，下同
      System.err.println(pce);
      System.exit(1);
    }
    Document doc = null;
    try {
      doc = db.parse(inFile);
    }
    catch (DOMException dom) {
      System.err.println(dom.getMessage());
      System.exit(1);
    }
    catch (IOException ioe) {
      System.err.println(ioe);
      System.exit(1);
    }
//下面是解析XML的全過程，
//比較簡單，先取根項目"學生花名冊"
    Element root = doc.getDocumentElement();
//取"學生"元素列表
    NodeList students = root.getElementsByTagName("學生");
    for (int i = 0; i < students.getLength(); i++) {
//依次取每個"學生"元素
      Element student = (Element) students.item(i);
//建立一個學生的Bean執行個體
      StudentBean studentBean = new StudentBean();
//取學生的性別屬性
      studentBean.setSex(student.getAttribute("性別"));
//取"姓名"元素，下面類同
      NodeList names = student.getElementsByTagName("姓名");
      if (names.getLength() == 1) {
        Element e = (Element) names.item(0);
        Text t = (Text) e.getFirstChild();
        studentBean.setName(t.getNodeValue());
      }

      NodeList ages = student.getElementsByTagName("年齡");
      if (ages.getLength() == 1) {
        Element e = (Element) ages.item(0);
        Text t = (Text) e.getFirstChild();
        studentBean.setAge(Integer.parseInt(t.getNodeValue()));
      }

      NodeList phones = student.getElementsByTagName("電話");
      if (phones.getLength() == 1) {
        Element e = (Element) phones.item(0);
        Text t = (Text) e.getFirstChild();
        studentBean.setPhone(t.getNodeValue());
      }

      student_Vector.add(studentBean);
    }
  }
//寫xml檔案
  private void writeXMLFile(String outFile) throws Exception {
//為解析XML作準備，
//建立DocumentBuilderFactory執行個體,指定DocumentBuilder
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    DocumentBuilder db = null;
    try {
      db = dbf.newDocumentBuilder();
    }
    catch (ParserConfigurationException pce) {
      System.err.println(pce);
      System.exit(1);
    }

    Document doc = null;
    doc = db.newDocument();

//下面是建立XML文檔內容的過程，
//先建立根項目"學生花名冊"
    Element root = doc.createElement("學生花名冊");
//根項目添加上文檔
    doc.appendChild(root);

//取學生資訊的Bean列表
    for (int i = 0; i < student_Vector.size(); i++) {
//依次取每個學生的資訊
      StudentBean studentBean = (StudentBean) student_Vector.get(i);
//建立"學生"元素，添加到根項目
      Element student = doc.createElement("學生");
      student.setAttribute("性別", studentBean.getSex());
      root.appendChild(student);
//建立"姓名"元素，添加到學生下面，下同
      Element name = doc.createElement("姓名");
      student.appendChild(name);
      Text tName = doc.createTextNode(studentBean.getName());
      name.appendChild(tName);

      Element age = doc.createElement("年齡");
      student.appendChild(age);
      Text tAge = doc.createTextNode(String.valueOf(studentBean.getAge()));
      age.appendChild(tAge);

      Element phone = doc.createElement("電話");
      student.appendChild(phone);
      Text tPhone = doc.createTextNode(studentBean.getPhone());
      phone.appendChild(tPhone);
    }
//把XML文檔輸出到指定的檔案
    FileOutputStream outStream = new FileOutputStream(outFile);
    OutputStreamWriter outWriter = new OutputStreamWriter(outStream);
    ( (XmlDocument) doc).write(outWriter, "GB2312");
    outWriter.close();
    outStream.close();
  }

private void writeHTMLFile(String outFile) throws Exception {
     StringBuffer HTMLString=new StringBuffer();
     HTMLString.append("<html>/n<head>/n<title>學生花名冊</title>/n<meta http-equiv=/"Content-Type/" content=/"text/html; charset=gb2312/">/n</head>/n<body>/n");
     if(student_Vector.size()>0){
       HTMLString.append("<table width=100% border=1 cellpadding=5 cellspacing=0>/n");
       HTMLString.append("/t<th colspan=4>學生花名冊</th>/n");
       HTMLString.append("/t<tr align=center>/n");
       HTMLString.append("/t/t<td>姓名</td>/n");
       HTMLString.append("/t/t<td>性別</td>/n");
       HTMLString.append("/t/t<td>年齡</td>/n");
       HTMLString.append("/t/t<td>電話</td>/n");
       HTMLString.append("/t</tr>/n");
       for (int i = 0; i < student_Vector.size(); i++) {
         StudentBean studentBean = (StudentBean) student_Vector.get(i);
         HTMLString.append("/t<tr align=center>/n");
         HTMLString.append("/t/t<td>"+studentBean.getName()+"</td>/n");
         HTMLString.append("/t/t<td>"+studentBean.getSex()+"</td>/n");
         HTMLString.append("/t/t<td>"+studentBean.getAge()+"</td>/n");
         HTMLString.append("/t/t<td>"+studentBean.getPhone()+"</td>/n");
         HTMLString.append("/t</tr>/n");
       }
       HTMLString.append("</table>");
     }
     HTMLString.append("/n</body>/n</html>");
     FileOutputStream outStream = new FileOutputStream(outFile);
    OutputStreamWriter outWriter = new OutputStreamWriter(outStream);
    outWriter.write(HTMLString.toString());
    outWriter.close();
    outStream.close();

  }
//最後加入測試主函數，如下：
  public static void main(String[] args) throws Exception {
//建立測試執行個體
    XMLTest xmlTest = new XMLTest();
//初始化向量列表
    xmlTest.student_Vector = new Vector();

    System.out.println("開始讀Input.xml檔案");
    xmlTest.readXMLFile("file/xml/Input.xml");
    System.out.println("讀入完畢");
    //System.out.println("開始寫Output.xml檔案");
    //xmlTest.writeXMLFile("file/xml/Output.xml");
    System.out.println("開始寫Output.htm檔案");
    xmlTest.writeHTMLFile("file/xml/Output.htm");
    System.out.println("寫入完成");
  }

}