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文档内容的过程， 先建立根元素"学生花名册" Element root = doc.createElement("学生花名册"):
//根元素添加上文档 doc.appendChild(root):
//取学生信息的Bean列表 for (int i = 0:
i < student_Vector.size(); i++) { //依次取每个学生的信息 StudentBean studentBean = (StudentBean) student_Vector.get(i):
//建立"学生"元素，添加到根元素 Element student = doc.createElement("学生"):
student.setAttribute("性别", studentBean.getSex()):
root.appendChild(student); //建立"姓名"元素，添加到学生下面，下同 Element name = doc.createElement("姓名"):
student.appendChild(name):
Text tName = doc.createTextNode(studentBean.getName()):
name.appendChild(tName):
Element age = doc.createElement("年龄"):
student.appendChild(age):
Text tAge = doc.createTextNode(String.valueOf(studentBean.getAge())):
Element phone = doc.createElement("电话"):
student.appendChild(phone):
Text tPhone = doc.createTextNode(studentBean.getPhone()):
phone.appendChild(tPhone):
} //把XML文档输出到指定的文件 FileOutputStream outStream = new FileOutputStream(outFile):
OutputStreamWriter outWriter = new OutputStreamWriter(outStream):
((XmlDocument) doc).write(outWriter, "GB2312"):
outWriter.close():
outStream.close():
} 最后加入测试主函数，如下：
public static void main(String[] args) throws Exception { //建立测试实例 XMLTest xmlTest = new XMLTest():
//初始化向量列表 xmlTest.student_Vector = new Vector():
System.out.println("开始读Input.xml文件"):
xmlTest.readXMLFile("Input.xml"):
System.out.println("读入完毕,开始写Output.xml文件"):
xmlTest.writeXMLFile("Output.xml"):
System.out.println("写入完成"):
} 好了，保存好StudentBean和XMLTest，把Input.xml保存到工作目录下。可以看到"写入完成"了