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luxiaotao1123

2020-08-15 71333f8fbfc321bced0d7a3916e996de7fdac284

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package com.zy.core.thread;
 
import com.zy.core.Slave;
import com.zy.core.ThreadHandler;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
 
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
 
/**
 * 条码扫描仪线程
 * Created by vincent on 2020/8/4
 */
@Data
@Slf4j
public class BarcodeThread implements Runnable, ThreadHandler {
 
    private Slave slave;
    private String barcode;
    private Socket socket;
    private DataOutputStream dataOutputStream;
    private DataInputStream dataInputStream;
 
    public BarcodeThread(Slave slave) {
        this.slave = slave;
    }
 
    @Override
    @SuppressWarnings("InfiniteLoopStatement")
    public void run() {
        connect();
        while (true) {
            try {
                write("T".getBytes(), "T".length());
                byte[] read = read(11, 1000);
                if (null != read) {
                    barcode = new String(read);
                }
                Thread.sleep(1000);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
 
    @Override
    public boolean connect() {
        try {
            close();  //1.主动释放连接 //2.某些服务器对指定ip有链路数限制
            socket = new Socket();
            //socket.setKeepAlive(true);
            SocketAddress socketAddress = new InetSocketAddress(slave.getIp(), slave.getPort());
            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());
        } catch (Exception e) {
            socket = null;
            log.error("socket connect error ip:");
            return false;
        }
        return true;
    }
 
    @Override
    public void close() {
        log.debug("Entry Method:close()");
        try {
            if (null != dataOutputStream) {
            dataOutputStream.close();
        }
        if (null != dataInputStream) {
            dataInputStream.close();
        }
        if (null != socket && !socket.isClosed()) {
          socket.close();
        }
        socket = null;
        } catch (IOException e) {
            log.error("SocketClient close Exception:" + e.getMessage());
        }
        log.debug("Exit Method:close()");
    }
 
    public void write(byte[] msg, int len) throws IOException {
        if (null != dataInputStream)
        {
            dataOutputStream.write(msg, 0, len);
            dataOutputStream.flush();
        }
    }
 
    public byte[] read(int bufferSize, int timeOut) throws IOException {
        if (socket == null) {
            return null;
        }
        socket.setSoTimeout(timeOut * 1000);
        byte[] bytes = new byte[bufferSize];
        log.trace("dataInputStream.read");
        int len = dataInputStream.read(bytes);
        log.debug("readLen:" + len);
        byte[] tempBytes = null;
        if (len > 0) {
        tempBytes = new byte[len];
        System.arraycopy(bytes, 0, tempBytes, 0, len);
        }
        return tempBytes;
    }
 
    public boolean valid() throws Exception {
        if (null == socket || socket.isClosed() || socket.isInputShutdown() || socket.isOutputShutdown()) {
            if (dataInputStream != null) {
                dataInputStream.close();
            }
            if (dataOutputStream != null) {
                dataOutputStream.close();
            }
            if (socket != null) {
                socket.close();
            }
            return false;
        }
        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, 1000);
        System.out.println(new String(read));
    }
}