我有霍尼韦尔USB条码扫描器。我想使用 Java代码读取条形码扫描仪的输入。 我通过以下代码获得了解决方案,但是我不想使用任何gui 。
import java.awt.AWTEvent;
import java.awt.FlowLayout;
import java.awt.Toolkit;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.WindowConstants;
public class BarcodeScaner extends JFrame {
private static String strBarcode = "";
private static JTextField jtBarcode = new JTextField(25);
public BarcodeScaner() {
getContentPane().setLayout(new FlowLayout());
getContentPane().add(new JLabel("Capture barcode "));
getContentPane().add(jtBarcode);
}
public static void main(String[] args) {
BarcodeScaner br = new BarcodeScaner();
readBarCode();
br.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
br.setVisible(true);
br.pack();
}
private static void readBarCode() {
// start of listening for barcode events
Toolkit.getDefaultToolkit().addAWTEventListener(new BarcodeAwareAWTEventListener(new BarcodeCapturedListener() {
@Override
public void barcodeCaptured(String barcode) {
strBarcode = barcode;
System.out.println("====="+barcode);
jtBarcode.setText(strBarcode);
}
}), AWTEvent.KEY_EVENT_MASK);
// end of listening for barcode events
}
}
在上面的代码中,我必须专注于文本框,然后只有我得到扫描的值。 我在stackoverflow中进行了搜索,但是没有得到任何特定的解决方案。
我也在下面的代码中尝试了此方法,但仍未执行serialEvent。
package scanhandler;
import java.awt.AWTException;
import java.awt.Robot;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.util.Enumeration;
import java.util.Properties;
import java.util.TooManyListenersException;
import javax.comm.CommPortIdentifier;
import javax.comm.PortInUseException;
import javax.comm.SerialPort;
import javax.comm.SerialPortEvent;
import javax.comm.SerialPortEventListener;
import javax.comm.UnsupportedCommOperationException;
public class ScanHandler implements Runnable, SerialPortEventListener {
private static CommPortIdentifier myCommPortIdentifier;
private static Enumeration portList;
private static String TimeStamp;
private static String driverClass;
private static String connectionString;
private static String comPort;
private Connection myConnection;
private InputStream myInputStream;
private Robot myRobot;
private SerialPort mySerialPort;
private Thread myThread;
public ScanHandler() {
// open serial port
try {
TimeStamp = new java.util.Date().toString();
mySerialPort = (SerialPort) myCommPortIdentifier.open("ComControl", 2000);
//System.out.println(TimeStamp + ": " + myCommPortIdentifier.getName() + " opened for scanner input");
} catch (PortInUseException e) {
e.printStackTrace();
}
// get serial input stream
try {
myInputStream = mySerialPort.getInputStream();
} catch (IOException e) {
e.printStackTrace();
}
// add an event listener on the port
try {
mySerialPort.addEventListener(this);
} catch (TooManyListenersException e) {
e.printStackTrace();
}
mySerialPort.notifyOnDataAvailable(true);
// set up the serial port properties
try {
mySerialPort.setSerialPortParams(9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
mySerialPort.setDTR(false);
mySerialPort.setRTS(false);
} catch (UnsupportedCommOperationException e) {
e.printStackTrace();
}
// make a robot to pass keyboard data
try {
myRobot = new Robot();
} catch (AWTException e) {
e.printStackTrace();
}
// create the thread
myThread = new Thread(this);
myThread.start();
}
public void run() {
try {
Thread.sleep(100);
} catch (InterruptedException e) {}
}
// on scan
public void serialEvent(SerialPortEvent event) {
if (event.getEventType() == SerialPortEvent.DATA_AVAILABLE) {
StringBuilder myStringBuilder = new StringBuilder();
int c;
try {
// append the scanned data onto a string builder
while ((c = myInputStream.read()) != 10){
if (c != 13) myStringBuilder.append((char) c);
}
// send to keyboard buffer if it the barcode doesn't start with '5'
if (myStringBuilder.charAt(0) != '5') {
for (int i = 0; i < myStringBuilder.length(); i++) {
myRobot.keyPress((int) myStringBuilder.charAt(i));
myRobot.keyRelease((int) myStringBuilder.charAt(i));
}
// here's the scanned barcode as a variable!
} else {
TimeStamp = new java.util.Date().toString();
System.out.println(TimeStamp + ": scanned input received:" + myStringBuilder.toString());
}
// close the input stream
myInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
// read ScanHandler properties
Properties myProperties = new Properties();
try {
myProperties.load(new FileInputStream("config.properties"));
comPort = myProperties.getProperty("ScanHandler.comPort");
} catch (IOException e) {
e.printStackTrace();
}
try {
// get our pre-defined COM port
myCommPortIdentifier = CommPortIdentifier.getPortIdentifier(comPort);
ScanHandler reader = new ScanHandler();
} catch (Exception e) {
TimeStamp = new java.util.Date().toString();
System.out.println(TimeStamp + ": " + comPort + " " + myCommPortIdentifier);
System.out.println(TimeStamp + ": msg1 - " + e);
}
};
}
答案 0 :(得分:0)
请使用用户指南中所述的设置条形码将扫描仪设置为USB串行模式。
然后安装扫描仪所连接机器的操作系统的串行端口设备驱动程序。
然后,您可以打开串行端口并将命令发送到扫描仪并接收条形码数据。