JAVA 获取网络时间

               

package com.my.consist;/** * 日期常量接口 *  * @author wbw *  */public interface DateConsist { public static final String WEB_URL1 = "http://www.bjtime.cn";// bjTime public static final String WEB_URL2 = "http://www.baidu.com";// 百度 public static final String WEB_URL3 = "http://www.taobao.com";// 淘宝 public static final String WEB_URL4 = "http://www.ntsc.ac.cn";// 中国科学院国家授时中心 public static final String WEB_URL5 = "http://www.360.cn";// 360 public static final String WEB_URL6 = "http://www.beijing-time.org";// beijing-time public static final String WEB_URL7 = "http://www.jd.com/";// 京东}

package com.my.utils;import java.net.URL;import java.net.URLConnection;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Locale;import org.springframework.util.StringUtils;import com.my.consist.DateConsist;/** * 获取网络时间 *  * @author wbw *  */public class WebDateUtils { /**  * 默认时间格式  */ private static final String DEFAULT_FORMAT = "yyyy-MM-dd HH:mm:ss"; /**  * 根据URL和格式化类型获取时间  *   * @param webuUrl  *            网络URL  * @param format  *            格式  * @return  */ public static String getWebsiteDatetime(String webuUrl, String format) {  try {   // 判断当前是否传入URL   if (!StringUtils.isEmpty(webuUrl)) {    URL url = new URL(webuUrl);// 获取url对象    URLConnection uc = url.openConnection();// 获取生成连接对象    uc.connect();// 发出连接请求    long ld = uc.getDate();// 读取网站日期时间    Date date = new Date(ld);// 转化为时间对象    SimpleDateFormat sdf = new SimpleDateFormat(      format != null ? format : DEFAULT_FORMAT, Locale.CHINA);// 输出北京时间    return sdf.format(date);   } else {    System.out.println("URL Error!!!");   }  } catch (Exception e) {   e.printStackTrace();  }  return null; } /**  * 测试  *   * @param args  */ public static void main(String[] args) {  String format = "yyyy-MM-dd HH:mm:ss";  System.out.println(getWebsiteDatetime(DateConsist.WEB_URL1, format)    + " [bjtime]");  System.out.println(getWebsiteDatetime(DateConsist.WEB_URL2, format)    + " [百度]");  System.out.println(getWebsiteDatetime(DateConsist.WEB_URL3, format)    + " [淘宝]");  System.out.println(getWebsiteDatetime(DateConsist.WEB_URL4, format)    + " [中国科学院国家授时中心]");  System.out.println(getWebsiteDatetime(DateConsist.WEB_URL5, format)    + " [360安全卫士]");  System.out.println(getWebsiteDatetime(DateConsist.WEB_URL6, format)    + " [beijing-time]");  System.out.println(getWebsiteDatetime(DateConsist.WEB_URL7, format)    + " [京东-time]"); }}

控制台输出信息

2016-02-01 16:28:27 [bjtime]2016-02-03 16:27:47 [百度]2016-02-03 16:27:47 [淘宝]2016-02-03 16:27:47 [中国科学院国家授时中心]2016-02-03 16:27:47 [360安全卫士]2016-02-03 16:27:47 [beijing-time]2016-02-03 16:29:25 [京东-time]

           

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