code: public static Map<?, ?> toMap(String xml, String encoding) throws UnmarshalException {
  		Map<?, ?> map = (Map<?, ?>)toObject(xml, encoding, Map.class);
  		return map;
  	}
docs: 将XML字符串绑定为Map对象
  
  @param xml XML字符串
  @param encoding XML字符串编码, 例如UTF-8, GBK
  
  @return Map对象
  
  @throws UnmarshalException 解组异常