1.下载 rxtx-2.1-7-bins-r2.zip.
2.解压.
3.拷贝 rxtxSerial.dll 到你的 c:/program files/java/jre-version/bin 目录下.
4.拷贝 RXTXcomm.jar 到你的 c:/program files/java/jre-version/lib/ext 目录下.
环境搭建完毕,附上测试代码
package rxtx.test; import gnu.io.CommPortIdentifier; import gnu.io.NoSuchPortException; import gnu.io.PortInUseException; import gnu.io.SerialPort; import gnu.io.SerialPortEvent; import gnu.io.SerialPortEventListener; import gnu.io.UnsupportedCommOperationException; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.Enumeration; import java.util.TooManyListenersException; public class CommUtil implements SerialPortEventListener{ SerialPort port = null; InputStream input; OutputStream output; CommPortIdentifier cpi; public CommUtil(Enumeration portList, String name){ try { cpi=CommPortIdentifier.getPortIdentifier(name.toUpperCase()); port=(SerialPort) cpi.open("My"+name, 2000); } catch (PortInUseException e) { System.out.println(e); } catch (NoSuchPortException e) { e.printStackTrace(); } try { input=port.getInputStream(); output=port.getOutputStream(); } catch (IOException e) { e.printStackTrace(); } try { port.addEventListener(this); } catch (TooManyListenersException e) { e.printStackTrace(); } port.notifyOnDataAvailable(true); try { port.setSerialPortParams(2400, SerialPort.DATABITS_8, // 设置串口读写参数 SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); } catch (UnsupportedCommOperationException e) { e.printStackTrace(); } } @Override public void serialEvent(SerialPortEvent event) { switch(event.getEventType()){ case SerialPortEvent.BI: case SerialPortEvent.OE: case SerialPortEvent.FE: case SerialPortEvent.PE: case SerialPortEvent.CD: case SerialPortEvent.CTS: case SerialPortEvent.DSR: case SerialPortEvent.RI: case SerialPortEvent.OUTPUT_BUFFER_EMPTY: System.out.println("神马都是浮云"); break; case SerialPortEvent.DATA_AVAILABLE: byte[] readBuffer = new byte[20]; try { while (input.available() > 0) { System.out.println(input.available()); int numBytes = input.read(readBuffer); System.out.println(numBytes); } send("receive"); System.out.println(new String(readBuffer).trim()); } catch (IOException e) { e.printStackTrace(); } break; } } public void send(String content){ try { output.write(content.getBytes()); } catch (IOException e) { e.printStackTrace(); } } public void send(OutputStream os,String content){ try { os.write(content.getBytes()); } catch (IOException e) { e.printStackTrace(); } } public void closePort() { if (port != null) { port.close(); } } public static void main(String[] args) { Enumeration en = CommPortIdentifier.getPortIdentifiers(); CommUtil comm = new CommUtil(en, "com3"); comm.send("hello"); } }
使用串口模拟软件协助测试