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.csp.sentinel.adapter.servlet.callback;
  
  import java.io.IOException;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import com.alibaba.csp.sentinel.adapter.servlet.util.FilterUtil;
  import com.alibaba.csp.sentinel.slots.block.BlockException;
  
  /***
   * The default {@link UrlBlockHandler}.
   *
   * @author youji.zj
   */
  public class DefaultUrlBlockHandler implements UrlBlockHandler {
  
      @Override
      public void blocked(HttpServletRequest request, HttpServletResponse response, BlockException ex)
          throws IOException {
          // Directly redirect to the default flow control (blocked) page or customized block page.
          FilterUtil.blockRequest(request, response);
      }
  }
  