JAVA 請求參數轉Map

場景：aaa=AAA&bbb=BBB&ccc=CCC 這樣的請求參數轉換成Map

/**
 * @param urlparam 帶分隔的url參數
 * @return
 */
public static Map<String,String> Split(String urlparam){
   Map<String,String> map = new HashMap<String,String>();
   String[] param =  urlparam.split("&");
   for(String keyvalue:param){
      String[] pair = keyvalue.split("=");
      if(pair.length==2){
         map.put(pair[0], pair[1]);
      }
   }
   return map;
}