淺談Java設(shè)計模式之開放封閉原則

public ResultDO<String> shareChannel(int shareCode) {

  if(ShareCodeUtil.share2A(shareCode)) {
     // TODO, 分享到A渠道的業(yè)務(wù)邏輯代碼
  }

  if(ShareCodeUtil.share2B(shareCode)) {
     // TODO, 分享到B渠道的業(yè)務(wù)邏輯代碼
  }

  ...渠道n...
}

public class ShareChannelChain {  
  private final Logger LOG = LoggerFactory.getLogger(this.getClass());

  /**
   * 分享渠道鏈
   */
  private List<ShareChannel> shareChannels;
  public ResultDO<String> share(int shareCode) {
    for (ShareChannel s : shareChannels) {
      ResultDO<String> r = s.share(shareCode);
         }
  }

public interface ShareChannel {
  public ResultDO<String> share(int shareCod);
}

public class AChannel implements ShareChannel {

  @Override
  public ResultDO<String> share(int shareCode) {
       // TODO 分享A渠道邏輯
    }
}

public class BChannel implements ShareChannel {

  @Override
  public ResultDO<String> share(int shareCode) {
       // TODO 分享B渠道邏輯
    }
}

  <bean id="AChannel" class="com.test.AChannel">
  </bean>
  <bean id="BChannel" class="com.test.BChannel">
  </bean>
  <bean id="shareChannelChain" class="com.test.ShareChannelChain">
    <property name="shareChannels">
      <list>
        <ref local="AChannel"/>
        <ref local="BChannel"/>
      </list>
    </property>
  </bean>

public ResultDO<String> shareChannel(int shareCode) {
    ShareChannelChain.share(shareCode);
}