socket（线程）接收数据后无法调用service层

Question

socket接收到设备上报的数据，无法调用service层进行查询等操作

public class ServerSocketConfig {

    private static Logger log = LoggerFactory.getLogger(ServerSocketConfig.class);

    public static ServerSocket serverSocket = null;

    /**
     * corePoolSize ：线程池中核心线程数的最大值
     * maximumPoolSize ：线程池中能拥有最多线程数
     * keepAliveTime ：表示空闲线程的存活时间
     * TimeUnit unit ：表示keepAliveTime的单位
     * workQueue：用于缓存任务的阻塞队列
     */
    private static final ThreadPoolExecutor threadpool = new ThreadPoolExecutor(15, 15,
            60L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());

    @Bean
    public void socketCreate() {
        try {
            serverSocket = new ServerSocket(9000);
            log.info("socket服务端开启");
            while (true){
                Socket socket = serverSocket.accept();
                System.out.println("接收到客户端socket" + socket.getRemoteSocketAddress());
                threadpool.execute(new ReceiveThread(socket, new StationServiceImpl()));
            }
        } catch (IOException e) {
            log.info("socket服务启动异常");
            e.printStackTrace();
        }
    }
}


class ReceiveThread implements Runnable {

    private static Logger log = LoggerFactory.getLogger(ReceiveThread.class);

    private Socket socket;

    private IStationService stationService;

    public ReceiveThread(Socket socket, IStationService stationService) {
        this.socket = socket;
        this.stationService = stationService;
    }

    @Override
    public synchronized void run() {
        try {
            InputStream is = socket.getInputStream();
            byte[] buf = new byte[1024];
            int line = 0;
            while((line=is.read(buf))!=-1){
                //将接收到的数据在控制台输出
                // byte[] 转换 (C语言中，byte类型没有符号位，最大值为255，java中byte类型带有符号位，最大值为127，问题就出现了)
                int[] dataFormat=new int[500];
                for(int i=0;i<line;i++){
                    if(buf[i]<0){
                        dataFormat[i]=buf[i]&0xff;
                    }else{
                        dataFormat[i]=buf[i];
                    }
                    System.out.print(dataFormat[i]+" ");
                }
                System.out.println("");

                // 十进制转字符
                String IMEI = "";
                for (int i = 0; i < line; i++) {
                    if(i > 3 && i < 19) {
                        IMEI += (char)dataFormat[i];
                    }
                }
                System.out.println("IMEI : "+IMEI);
                Station station = stationService.selectStationByIMEI(IMEI);
            }
            log.info("服务端关闭客户端[{}]", socket.getRemoteSocketAddress());
            socket.close();
        } catch (Exception e) {
            log.info("接收数据异常socket关闭");
            e.printStackTrace();
        }
    }
}

重点就在

Station station = stationService.selectStationByIMEI(IMEI);

运行时，在service层 stationMapper 为 null。

代码报错

我猜测可能是线程内不能直接调用外部方法，但不知道怎么解决。如果这样解决不了就要考虑通过HTTP将数据发送到其他接口去进行处理了。

Answer 1

stationService 不能简单的new StationServiceImpl()来创建
需要通过框架去找到这个bean，这样你的mapper才可以用