ServerTimeUtil.java

package com.jiuqi.njt.register;

import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.Context;
import android.os.SystemClock;

import com.jiuqi.njt.data.HttpHelper;
import com.jiuqi.njt.util.SntpClient;

public class ServerTimeUtil {
	
	private  Context context ;
	private String TAG = this.getClass().getName();
	
	public ServerTimeUtil(Context context) {
		super();
		this.context = context;
	}


	/**
	 * 获取服务器端时间
	 * @return
	 */
	public static long getServerTime(){
		
		long serverTime = 0;
		SntpClient client = SntpClient.getInstance();  

		List<BasicNameValuePair> queryParams=new ArrayList<BasicNameValuePair>();
		queryParams.add(new BasicNameValuePair("getTime","yes"));
		
		String stateJson;
		try {
			stateJson = new HttpHelper().getEntity("http://www.jqgj.com.cn:9090/jqgj_server_client/login!getServerTime.action",queryParams);
			if (stateJson != null && !stateJson.equals("-1") && !stateJson.equals("500")) {
	 			try {
	 				JSONObject obj = new JSONObject(stateJson);
	 				serverTime = obj.getLong("timeSec");
	 			} catch (JSONException e) {
	 				e.printStackTrace();
	 			}
	 		} else {
	 			
	 		    if (client.requestTime("cn.pool.ntp.org", 60000)) {  
	 	        	serverTime= client.getNtpTime() + SystemClock.elapsedRealtime() - client.getNtpTimeReference(); 
	 	        }   
	 		     
	 		    if(serverTime==0){
	 		    	try {
	 	 				URL url = new URL("http://www.bjtime.cn");// 取得资源对象
	 	 				URLConnection uc = url.openConnection();// 生成连接对象
	 	 				uc.connect(); // 发出连接
	 	 				serverTime= uc.getDate(); // 取得网站日期时间				
	 	 			} catch (Exception e) {
	 	 				e.printStackTrace();
	 	 			}
	 	        }   
	 		}
		} catch (IOException e1) {
			e1.printStackTrace();
		}
 		
 		///TODO　如果获取不到时间就用手机时间
 		if(serverTime == 0){
 			serverTime =System.currentTimeMillis();
 		}
        //获取网络时间
		return serverTime;
	}	
}