content: /*
   * Copyright 1999-2018 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.utils;
  
  import jakarta.servlet.http.HttpServletRequest;
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * ReuseHttpRequest.
   *
   * @author <a href="mailto:liaochuntao@live.com">liaochuntao</a>
   */
  public interface ReuseHttpRequest extends HttpServletRequest {
      
      /**
       * get request body.
       *
       * @return object
       * @throws Exception exception
       */
      Object getBody() throws Exception;
      
      /**
       * Remove duplicate values from the array.
       *
       * @param request {@link HttpServletRequest}
       * @return {@link Map}
       */
      default Map<String, String[]> toDuplication(HttpServletRequest request) {
          Map<String, String[]> tmp = request.getParameterMap();
          Map<String, String[]> result = new HashMap<>(tmp.size());
          Set<String> set = new HashSet<>();
          for (Map.Entry<String, String[]> entry : tmp.entrySet()) {
              set.addAll(Arrays.asList(entry.getValue()));
              result.put(entry.getKey(), set.toArray(new String[0]));
              set.clear();
          }
          return result;
      }
  }
  