String currenturl = driver.getCurrentUrl(); //获取发布完成时的url，目的是取到里面的post id
		System.out.println(currenturl);
		Pattern p = Pattern.compile("\\D+"); //定义正则表达式规则
		String[] numbers = p.split(currenturl); //获得url里面的数字

		StringBuffer sb = new StringBuffer();   //“字符串数组” 转 “字符串”，通过循环方式完成
		for(int i = 0; i < numbers.length; i++){
		 sb. append(numbers[i]);
		}
		String s = sb.toString();
		System.out.println(s);