readconfig.java

自定义架构仿struts+command循环调用版

package accp.factory;

import java.io.FileInputStream;
import java.net.URL;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;

public class ReadConfig {
	private static ReadConfig config = new ReadConfig();
	private ReadConfig() {}
	public static ReadConfig getInstance() {
		return config;
	}
	/**
	 * 得到配置文件的路径
	 * 
	 * @throws Exception
	 * @return String
	 */
	private static String getPath() {
		URL url = ReadConfig.class.getClassLoader().getResource("");
		String xml = url.getPath() + "/config.xml";
		return xml;
	}
	
	public void analyse() throws Exception{
		String file = this.getClass().getClassLoader().getResource(".").getPath()+"/config.xml";
		SAXBuilder sb = new SAXBuilder();
		Document doc = sb.build(new FileInputStream(file));
		Element root = doc.getRootElement(); //conf
		List<Element> childlist1 = root.getChildren();
		for(Element e1 : childlist1) {
			List<Element> childlist2 = e1.getChildren();
			for(Element e2 : childlist2) {
				System.out.println(e2.getName()+"="+e2.getText());
			}
		}
	}

	/**
	 * 读取配置文件
	 * 
	 * @return Properties
	 */
	public Map<String,String> readFromXML() {
		Map<String,String> map = new HashMap<String,String>();
		SAXBuilder sb = new SAXBuilder();
		try {
			// 从文件构造一个Document，因为XML文件中已经指定了编码，所以这里不必了
			Document doc = sb.build(new FileInputStream(getPath()));
			//得到根元素--conf
			Element root = doc.getRootElement();
			//得到根元素所有子元素的集合--database/dao	
			List root1 = root.getChildren();
			List sub1 = null;
			for (Iterator iter1 = root1.iterator(); iter1.hasNext();) {
				Element rootEle = (Element) iter1.next();
				//再次得到子元素的孙元素集合，即database/dao下的子元素
				sub1 = rootEle.getChildren();
				//if ("dao".equals(rootEle.getName())) {
					for (Iterator iter2 = sub1.iterator(); iter2.hasNext();) {
						Element subEle = (Element) iter2.next();
						map.put(subEle.getName(), subEle.getText());
						//System.out.println(subEle.getName() + "=" + subEle.getText());
					}
				//}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return map;
	}

	public static void main(String[] args) {
		ReadConfig conf = new ReadConfig();
		conf.readFromXML();
	}

}