public class SocketEvent {

  private int type =0;

  private String msg ="";

  private String keyIP =""; // 关键IP

  private String temporaryIP =""; // 临时IP

  public SocketEvent() {
  }

  public int getType() {
    return type;
  }

  public void setType(int type) {
    this.type = type;
  }

  public String getMsg() {
    return msg;
  }

  public void setMsg(String msg) {
    this.msg = msg;
  }

  public String getKeyIP() {
    return keyIP;
  }

  public void setKeyIP(String keyIP) {
    this.keyIP = keyIP;
  }

  public String getTemporaryIP() {
    return temporaryIP;
  }

  public void setTemporaryIP(String temporaryIP) {
    this.temporaryIP = temporaryIP;
  }
}

public static final int CHAT_PRIVATE = 111; // 私聊的指令
  public static final int CHAT_GROUP = 222; // 群聊的指令
  public static final int SOCKET_SUCCESS = 333; // socket连接成功的指令
  public static final int SOCKET_FAIL = 444; // socket连接失败的指令
  public static final int CONNECT_SUCCESS = 666; // socket连接成功的指令
  public static final int CONNECT_FAIL = 777; // socket连接失败的指令
  public static final int LOGIN_ARG = 888; // socket接收到标志新用户登录的指令
  public static final int CANCEL_ARG = 999; // socket接收到标志用户注销的指令
  public static final int NEW_CLIENT = 3332; // 新用户登录的指令
  public static final int ALL_CLIENT = 3432; // 新用户登录后接收到所有在线用户的指令
  public static final int SEND_PRIVATE = 5666; // 发送私聊消息的指令
  public static final int SEND_IPlIST = 6666; // 发送已登录的用户IP集合的指令

Socket Socketclient = server.accept();

// 实时获取客户端发送的数据
    @Override
    public void run() {
      try {
        while (true) {
          if ((acceptLine = in.readLine()) != null) {
            System.out.println("<接收到的消息是>" + acceptLine);

            SocketEvent event = JSON.parseObject(acceptLine, SocketEvent.class);

            switch (event.getType()) {
            case UtilFactory.CHAT_GROUP:
              sendMsgAvoid(event.getKeyIP(), acceptLine);
              break;

            case UtilFactory.SEND_PRIVATE:
              event.setType(UtilFactory.CHAT_PRIVATE);
              sendMsgTarget(event.getTemporaryIP(), JSON.toJSONString(event));

              break;
            }

          }
        }
      } catch (Exception e) {
        e.printStackTrace();
      }
    }

// 向指定的ip地址发送消息
    private void sendMsgTarget(String targetIP, String msg) {
      int num = mList.size();

      for (int index = 0; index < num; index++) {
        Socket mSocket = mList.get(index);

        String ip = mSocket.getInetAddress().getHostAddress();

        if (ip.equals(targetIP)) {
          PrintWriter pout = null;
          try {
            pout = new PrintWriter(
                new BufferedWriter(new OutputStreamWriter(mSocket.getOutputStream(), "UTF-8")), true);
            pout.println(msg);

            // 退出方法
            return;
          } catch (IOException e) {
            e.printStackTrace();
          }
        }

      }
    }

    // 向除了这个ip以外的所有ip发送
    private void sendMsgAvoid(String avoidIP, String msString) {

      int num = mList.size();

      for (int index = 0; index < num; index++) {
        Socket mSocket = mList.get(index);

        String ip = mSocket.getInetAddress().getHostAddress();

        if (!ip.equals(avoidIP)) {
          PrintWriter pout = null;
          try {
            pout = new PrintWriter(
                new BufferedWriter(new OutputStreamWriter(mSocket.getOutputStream(), "UTF-8")), true);
            pout.println(msString);
          } catch (IOException e) {
            e.printStackTrace();
          }
        }

      }
    }

@Subscribe(threadMode = ThreadMode.MAIN)
  public void privateChat(SocketEvent event) {
    switch (event.getType()) {
      case MyApplication.CHAT_PRIVATE:
        // 将消息post给私聊聊天室
        ChatMessageBean bean = new ChatMessageBean();
        bean.setMsg(event.getMsg());
        bean.setName(event.getKeyIP());
        bean.setType(ChatMessageBean.OTHERS_ARG);
        EventBus.getDefault().post(bean);
        break;

      case MyApplication.SEND_PRIVATE:
        sendMsg(JSON.toJSONString(event));
        break;
    }
  }