将url参数转换成map,将map转换成url

将url参数转换成map,将map转换成url

/**
 * 将url参数转换成map
 * @param param aa=11&bb=22&cc=33
 * @param flag   true不滤空  false 不滤空
 * @return
 */
public static Map<String, Object> getUrlParams(String param, boolean flag) {
   Map<String, Object> map = new HashMap<String, Object>(0);
   if (StringUtils.isBlank(param)) {
      return map;
   }
   String[] params = param.split("&");
   for (int i = 0; i < params.length; i++) {
      String[] p = params[i].split("=");
      if (p.length == 2) {
         map.put(p[0], p[1]);
      }else {
         if(flag){//是否过滤空
            map.put(p[0], "");
         }

      }
   }
   return map;
}

/**
 * 将map转换成url
 * @param map
 * @return
 */
public static String getUrlParamsByMap(Map<String, Object> map) {
   if (map == null) {
      return "";
   }
   StringBuffer sb = new StringBuffer();
   for (Map.Entry<String, Object> entry : map.entrySet()) {
      sb.append(entry.getKey() + "=" + entry.getValue());
      sb.append("&");
   }
   String s = sb.toString();
   if (s.endsWith("&")) {
      s = org.apache.commons.lang.StringUtils.substringBeforeLast(s, "&");
   }
   return s;
}