package find;

import org.xml.sax.Attributes;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.SAXException; 
import java.util.Properties;

//使用DefaultHandler的好處 是 不必陳列出所有方法,
public class ConfigParser extends DefaultHandler {

////定義一個(gè)Properties 用來(lái)存放 dbhost dbuser dbpassword的值
	private Properties props;
	
	private String currentSet;
	private String currentName;
	private StringBuffer currentValue = new StringBuffer();
	
	//構(gòu)建器初始化props
	public ConfigParser() {
	
		this.props = new Properties();
	}
	
	public Properties getProps() {
		return this.props;
	}
	
	
	
	//定義開(kāi)始解析元素的方法. 這里是將<xxx>中的名稱xxx提取出來(lái).
	public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
		currentValue.delete(0, currentValue.length());
		this.currentName =qName;
	
	}
	
	//這里是將<xxx></xxx>之間的值加入到currentValue
	
	public void characters(char[] ch, int start, int length) throws SAXException { 
	
	currentValue.append(ch, start, length);
	
	}
	
	//在遇到</xxx>結(jié)束后,將之前的名稱和值一一對(duì)應(yīng)保存在props中
	
	public void endElement(String uri, String localName, String qName) throws SAXException {
	
		props.put(qName.toLowerCase(), currentValue.toString().trim());
		//System.out.println(props.toString());
		//props.list(System.out);
	}

}