content: /*
   * Copyright 1999-2023 Alibaba Group Holding Ltd.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.alibaba.nacos.core.paramcheck;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.common.paramcheck.ParamInfo;
  
  import jakarta.servlet.http.HttpServletRequest;
  import java.util.List;
  
  /**
   * Extract param from http-request.
   *
   * @author zhuoguang
   */
  public abstract class AbstractHttpParamExtractor implements ParamExtractor<HttpServletRequest, ParamInfo> {
      
      /**
       * Extract param.
       *
       * @param request the request
       * @return the list
       * @throws NacosException the exception
       */
      @Override
      public abstract List<ParamInfo> extractParam(HttpServletRequest request) throws NacosException;
      
  }
  