Parse settings.xml

AppConfig.java

package com.example;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

public class AppConfig {
	
	// Database
	private static String dbAdapter;
	private static String dbHost;
	private static String dbName;
	private static String dbUser;
	private static String dbPassword;
	private static String dbPort;

	
	// KamuSM Time Stamp Server (TSA)
	private static String tsaKamuSMUrl;
	private static String tsaKamuSMUser;
	private static String tsaKamuSMPassword;
	
	// Smart Card
	private static String smartCardPin;
	
	/**
	 * Konfigurasyon bilgileri config/settings.yml dosyasından okunur.
	 * @throws Exception 
	 */
	public static void load() throws Exception {
		java.nio.file.Path p = java.nio.file.Paths.get("config", "app_settings.xml");
		File fXmlFile = new File(p.toString());
		
		DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
		DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
		org.w3c.dom.Document doc = dBuilder.parse(fXmlFile);
		
		//optional, but recommended
		//http://stackoverflow.com/questions/13786607/normalization-in-dom-parsing-with-java-how-does-it-work
		doc.getDocumentElement().normalize();
		
		NodeList nList;
		NodeList nList2;
		Node nNode;
		Node nNode2;
		org.w3c.dom.Element eElement;
		org.w3c.dom.Element eElement2;
		
		nList = doc.getElementsByTagName("database");
		nNode = nList.item(0);
		eElement = (Element) nNode;
		dbAdapter = eElement.getElementsByTagName("adapter").item(0).getTextContent();
		dbHost = eElement.getElementsByTagName("host").item(0).getTextContent();
		dbName = eElement.getElementsByTagName("db_name").item(0).getTextContent();
		dbUser = eElement.getElementsByTagName("user").item(0).getTextContent();
		dbPassword = eElement.getElementsByTagName("password").item(0).getTextContent();
		dbPort = eElement.getElementsByTagName("port").item(0).getTextContent();
		
		nList = doc.getElementsByTagName("tsa");
		nNode = nList.item(0);
		eElement = (Element) nNode;
		nList2 =  eElement.getElementsByTagName("kamuSM");
		nNode2 = nList2.item(0);
		eElement2 = (Element) nNode2;
		
		tsaKamuSMUrl = eElement2.getElementsByTagName("url").item(0).getTextContent();
		tsaKamuSMUser = eElement2.getElementsByTagName("user").item(0).getTextContent();
		tsaKamuSMPassword = eElement2.getElementsByTagName("password").item(0).getTextContent();
		
		nList = doc.getElementsByTagName("smartCard");
		nNode = nList.item(0);
		eElement = (Element) nNode;
		smartCardPin = eElement.getElementsByTagName("pin").item(0).getTextContent();
		System.out.println("*** Konfigurasyon dosyasından okunan smart card pin'i: " + smartCardPin + " ***");
		if (smartCardPin.length() == 0) {
			throw new Exception("Smart Card pin'i konfigurasyon dosyasından okunamadı!!!");
			//smartCardPin = null;
		}
		
		//System.out.println(tsaKamuSMUrl + "-" + tsaKamuSMPassword + "-" + tsaKamuSMUser);
		
	}

	public static String getDbAdapter() {
		return dbAdapter;
	}

	public static String getDbHost() {
		return dbHost;
	}

	public static String getDbName() {
		return dbName;
	}

	public static String getDbUser() {
		return dbUser;
	}

	public static String getDbPassword() {
		return dbPassword;
	}

	public static String getDbPort() {
		return dbPort;
	}

	public static String getTsaKamuSMUrl() {
		return tsaKamuSMUrl;
	}

	public static String getTsaKamuSMUser() {
		return tsaKamuSMUser;
	}

	public static String getTsaKamuSMPassword() {
		return tsaKamuSMPassword;
	}
	
	public static String getSmartCardPin() {
		return smartCardPin;
	}

}