|  |  | 
 |  |  |         connect(); | 
 |  |  |         while (true) { | 
 |  |  |             try { | 
 |  |  | //                write("T".getBytes(), "T".length()); | 
 |  |  |                 byte[] read = read(11, 200); | 
 |  |  |                 byte[] read = read(8, 100); | 
 |  |  |                 if (null != read) { | 
 |  |  |                     String s = new String(read); | 
 |  |  |                     if (!Cools.isEmpty(s)) { | 
 |  |  | 
 |  |  |             socket.connect(socketAddress, 1000); //某些服务器ping延迟高时要增加,否则会报错connect timeout | 
 |  |  |             dataOutputStream = new DataOutputStream(socket.getOutputStream()); | 
 |  |  |             dataInputStream = new DataInputStream(socket.getInputStream()); | 
 |  |  |             log.info("条码扫描仪连接成功 ===>> [id:{}] [ip:{}] [port:{}]", slave.getId(), slave.getIp(), slave.getPort()); | 
 |  |  | //            log.info("条码扫描仪连接成功 ===>> [id:{}] [ip:{}] [port:{}]", slave.getId(), slave.getIp(), slave.getPort()); | 
 |  |  |         } catch (Exception e) { | 
 |  |  |             socket = null; | 
 |  |  |             log.error("条码扫描仪连接失败!!! ===>> [id:{}] [ip:{}] [port:{}]", slave.getId(), slave.getIp(), slave.getPort()); | 
 |  |  | 
 |  |  |         if (null != dataInputStream) { | 
 |  |  |             dataInputStream.close(); | 
 |  |  |         } | 
 |  |  |         if (null != socket && !socket.isClosed()) { | 
 |  |  |           socket.close(); | 
 |  |  | //        if (null != socket && !socket.isClosed()) { | 
 |  |  | //            socket.close(); | 
 |  |  | //        } | 
 |  |  |         if (null != socket){ | 
 |  |  |             socket.close(); | 
 |  |  |         } | 
 |  |  |         socket = null; | 
 |  |  |         } catch (IOException e) { | 
 |  |  | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     public byte[] read(int bufferSize, int timeOut) throws IOException { | 
 |  |  |         if (socket == null) { | 
 |  |  |             return null; | 
 |  |  |         } | 
 |  |  | //        if (socket == null) { | 
 |  |  | //           connect(); | 
 |  |  | //        } | 
 |  |  |         connect(); | 
 |  |  |         socket.setSoTimeout(timeOut); | 
 |  |  |         byte[] bytes = new byte[bufferSize]; | 
 |  |  |         int len = dataInputStream.read(bytes); | 
 |  |  | 
 |  |  |         return true; | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     public static void main(String[] args) throws Exception { | 
 |  |  |         BarcodeThread barcodeThread = new BarcodeThread(new Slave()); | 
 |  |  |         barcodeThread.getSlave().setIp("192.168.2.150"); | 
 |  |  |         barcodeThread.getSlave().setPort(51236); | 
 |  |  |         boolean connect = barcodeThread.connect(); | 
 |  |  |         System.out.println(connect); | 
 |  |  |         barcodeThread.write("T".getBytes(), "T".length()); | 
 |  |  |         byte[] read = barcodeThread.read(11, 1); | 
 |  |  |         System.out.println(new String(read)); | 
 |  |  |     } | 
 |  |  | } |