code: public static String replace(String str, String regex, String... args) {
  		int length = args.length;
  		for (int i = 0; i < length; i++) {
  			str = str.replaceFirst(regex, args[i]);
  		}
  		return str;
  	}
docs: 替换url中的参数
  
  @param str
  @param regex
  @param args
  @return {String}