查看本类的 API文档回源码主页

   /*
    * Copyright 2012 The Netty Project
    *
    * The Netty Project licenses this file to you 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:
    *
    *   https://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 io.netty.handler.codec.marshalling;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.channel.Channel;
  import io.netty.channel.ChannelHandler.Sharable;
  import io.netty.channel.ChannelHandlerContext;
  import io.netty.handler.codec.MessageToByteEncoder;
  
  import org.jboss.marshalling.Marshaller;
  
  /**
   * {@link MessageToByteEncoder} implementation which uses JBoss Marshalling to marshal
   * an Object.
   *
   * See <a href="https://www.jboss.org/jbossmarshalling">JBoss Marshalling website</a>
   * for more information
   *
   * Use {@link MarshallingEncoder} if possible.
   *
   */
  @Sharable
  public class CompatibleMarshallingEncoder extends MessageToByteEncoder<Object> {
  
      private final MarshallerProvider provider;
  
      /**
       * Create a new instance of the {@link CompatibleMarshallingEncoder}
       *
       * @param provider  the {@link MarshallerProvider} to use to get the {@link Marshaller} for a {@link Channel}
       */
      public CompatibleMarshallingEncoder(MarshallerProvider provider) {
          this.provider = provider;
      }
  
      @Override
      protected void encode(ChannelHandlerContext ctx, Object msg, ByteBuf out) throws Exception {
          Marshaller marshaller = provider.getMarshaller(ctx);
          marshaller.start(new ChannelBufferByteOutput(out));
          marshaller.writeObject(msg);
          marshaller.finish();
          marshaller.close();
      }
  
  }