package com.hotel.domain;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

import com.hotel.utils.XmlHelper;

//.getLogger(BJTime.class)
public class BJTime {

	private transient final static Logger log = LogManager.getLogger(BJTime.class);
    public static void main(String[] args) {
        
        String url="http://www.time.ac.cn/timeflash.asp?user=flash";
        try {
            String xml = sendGETRequest(url,null,"gb2312");
            String formatTime = getTime(xml);//如2014-2-11 9:50:4
            String[] times = formatTime.split(" ");
            setTime(times[1],times[0]);
            log.info("设置北京时间成功");
        }
        catch (Exception e) {
            log.error("设置北京时间失败，请检查http://www.time.ac.cn/timeflash.asp?user=flash是否可以访问");
        }
    }
    /**
     * 发送GET请求
     * @param path 请求路径
     * @param params 请求参数
     * @param encoding 编码
     * @return 请求是否成功
     */
    private static String sendGETRequest(String path, Map<String, String> params, String ecoding) throws Exception{
        // http://192.168.1.100:8080/web/ManageServlet?title=xxx&timelength=90
        StringBuilder url = new StringBuilder(path);
        if (params != null && !params.isEmpty()) {
            url.append("?");
            for (Map.Entry<String, String> entry : params.entrySet()) {
                url.append(entry.getKey()).append("=");
                url.append(URLEncoder.encode(entry.getValue(), ecoding));
                url.append("&");
            }
            url.deleteCharAt(url.length() - 1);
        }
        HttpURLConnection conn = (HttpURLConnection)new URL(url.toString()).openConnection();
        conn.setConnectTimeout(5000);
        conn.setRequestMethod("GET");
        if(conn.getResponseCode() == 200){
            
            return read(conn.getInputStream());
        }
        return null;
    }
    public static String read(InputStream inStream) throws Exception{
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = 0;
        while( (len = inStream.read(buffer)) != -1 ){
            outStream.write(buffer, 0, len);
        }
        inStream.close();
        return new String(outStream.toByteArray(),"gb2312");
    }
    public static String  getTime(String xmlStr) {
//        String path = System.getProperty("user.dir") + "/time.xml";
//        String xmlStr = XMLDocument.getXmlFromFile(path);
        System.out.println(xmlStr);
        Document doc = null;
        try{
            doc = DocumentHelper.parseText(xmlStr);// 将xml字符串转化为dom4j对象
            Element root = doc.getRootElement();// 最大的Asset
            Element timeElement =XmlHelper.getInstance().getSingleElementByName(root, "time");
            String value = "";
            Element subElement =XmlHelper.getInstance().getSingleElementByName(timeElement, "year");//
            String year= subElement.getText();
            subElement =XmlHelper.getInstance().getSingleElementByName(timeElement, "month");//
            String month= subElement.getText();
            subElement =XmlHelper.getInstance().getSingleElementByName(timeElement, "day");//
            String day= subElement.getText();
            subElement =XmlHelper.getInstance().getSingleElementByName(timeElement, "hour");//
            String hour= subElement.getText();
            subElement =XmlHelper.getInstance().getSingleElementByName(timeElement, "minite");//
            String minite= subElement.getText();
            subElement =XmlHelper.getInstance().getSingleElementByName(timeElement, "second");//
            String second= subElement.getText();
            value=year+"-"+month+"-"+day+" "+hour+":"+minite+":"+second;
            String[] times = value.split(" ");
            System.out.println(value);
            System.out.println(times[0]);
            System.out.println(times[1]);
            return value;
            
        }catch(Exception e){
            e.printStackTrace();
        }
        return null;
    }
    /**
     * {方法功能中文描述}
     * 
     * @param time 时间 如“2014-2-11”
     * @param date 日期 如“9:50:4”
     * @author: wanghaotao
     */
    public static void setTime(String time,String date){
        String osName = System.getProperty("os.name");  
        String cmdTime = "";  
        String cmdDate = "";  
        try {  
            cmdTime = "  cmd /c time "+time;  //  cmd /c time 22:35:00
            cmdDate = " cmd /c date "+date;  // cmd /c date 2009-03-26
            if (osName.matches("^(?i)Windows.*$")) {// Window 系统  
            // 格式 HH:mm:ss  
            Runtime.getRuntime().exec(cmdTime);  
            // 格式：yyyy-MM-dd  
            Runtime.getRuntime().exec(cmdDate);  
        } else {// Linux 系统  
            
            cmdTime = "  date -s "+time.replaceAll("-", "");  //  date -s 20090326
            cmdDate = "  date -s "+date;  //  date -s 22:35:00
           // 格式：yyyyMMdd  
           Runtime.getRuntime().exec(cmdDate);  
           // 格式 HH:mm:ss  
           Runtime.getRuntime().exec(cmdTime);  
        }  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
       }
}