java代码读取xml配置文件 java读取xml配置文件参数

packagetest.com;importjava.io.FileInputStream;importjavax.xml.parsers.DocumentBuilder;importjavax.xml.parsers.DocumentBuilderFactory;importorg.w3c.dom.Document;importorg.w3c.dom.Element;importorg.w3c.dom.Node;importorg.w3c.dom.NodeList;public classXmlParser {public static void main(String[] args) throwsException {
getXML("src/parameters.xml", "HolderName1");
//readXmlFile("src/Accounts.xml");
}/*** @desc 根据key属性的值，获取节点的值
*
**/
public static String getXML(String sqlXMLPath, String node) throwsException {
DocumentBuilderFactory builderFactory=DocumentBuilderFactory.newInstance();
FileInputStream xmlInputStream= newFileInputStream(sqlXMLPath);
DocumentBuilder builder=builderFactory.newDocumentBuilder();
Document document=builder.parse(xmlInputStream);
Node n= document.getChildNodes().item(0);
NodeList nl=n.getChildNodes();for (int i = 0; i < nl.getLength(); i++) {if (!nl.item(i).getNodeName().equals("#text")) {
Element e=(Element) nl.item(i);
System.out.println(nl.item(i).getNodeName()+ "\t" + e.getAttribute("key") + "\t" +nl.item(i).getTextContent());
String key= e.getAttribute("key");
String value=nl.item(i).getTextContent();if(key.equals(node)) {returnvalue;
}
}
}return null;
}public static void readXmlFile(String fileName) throwsException {
FileInputStream xmlInputStream= newFileInputStream(fileName);
DocumentBuilderFactory dbf= DocumentBuilderFactory.newInstance(); //返回documentBuilderFactory对象
DocumentBuilder db = dbf.newDocumentBuilder();//返回db对象用documentBuilderFatory对象获得返回documentBuildr对象
Document dt = db.parse(xmlInputStream); //得到一个DOM并返回给document对象
Element element = dt.getDocumentElement();//得到一个elment根元素
System.out.println("根元素：" + element.getNodeName()); //获得根节点
NodeList childNodes = element.getChildNodes(); //获得根元素下的子节点
for (int i = 0; i < childNodes.getLength(); i++) //遍历这些子节点
{
Node node1= childNodes.item(i); //childNodes.item(i);//获得每个对应位置i的结点
if ("Account".equals(node1.getNodeName())) {//如果节点的名称为"Account"，则输出Account元素属性type
System.out.println("\r\n找到一个账号. 所属区域:s" + node1.getAttributes().getNamedItem("type").getNodeValue() + "$$");
NodeList nodeDetail= node1.getChildNodes(); //获得下的节点
for (int j = 0; j < nodeDetail.getLength(); j++) { //遍历下的节点
Node detail = nodeDetail.item(j); //获得元素每一个节点
if ("code".equals(detail.getNodeName())) //输出code
System.out.println("卡号: " +detail.getTextContent());else if ("pass".equals(detail.getNodeName())) //输出pass
System.out.println("密码: " +detail.getTextContent());else if ("name".equals(detail.getNodeName())) //输出name
System.out.println("姓名: " +detail.getTextContent());else if ("money".equals(detail.getNodeName())) //输出money
System.out.println("余额: " +detail.getTextContent());
}
}
}
}
}