java rxtx 64_java – RXTX无法在Windows 7 64位下列出或查找端口

早上好,

我在Windows 7 64位上使用/或安装rxtx时遇到问题.我以前在x86 win XP系统上使用它并没有问题.由于某些原因重新安装到这个新系统,rxtx无法找到任何端口.我已经尝试了rxtx安装,Cloud Hopper的64位本机库并删除所有rxtx文件并从头开始.找到RXTXcomm.jar,我可以浏览NetBeans中的软件包,但实现似乎已被破坏或找不到.

每次执行时,此行都会失败：

comPort = "COM1";

portId = CommPortIdentifier.getPortIdentifier(comPort);

并抛出NoSuchPortException.

使用它列出串行端口不会产生任何结果.

Enumeration ports = CommPortIdentifier.getPortIdentifiers();

String portArray[] = null;

while (ports.hasMoreElements()) {

CommPortIdentifier port = (CommPortIdentifier) ports.nextElement();

System.out.println(port.getName());

}

我已经检查过串口是否可用所以此时我想知道本机库是否只是针对Windows 7 64位而被破坏了.

有没有人在Windows 7 64位下成功使用RXTX 2.2pre2？

构造函数中的违规代码部分：

public SerialControl(String name,String comPort,int baudrate,int databits,String parity,double stopbits) throws Exception {

int stop = 0;

int data = 0;

int par = 0;

this.name=name;

// Sanity checks and interpretation

if (baudrate > 115200 || baudrate < 300) {

System.err.println(name+": constructor(): Invalid baudrate "+baudrate);

throw new Exception("Invalid baudrate," + baudrate);

}

if (databits >= 5 && databits <= 8) {

switch (databits) {

case 5:

data = SerialPort.DATABITS_5;

break;

case 6:

data = SerialPort.DATABITS_6;

break;

case 7:

data = SerialPort.DATABITS_7;

break;

case 8:

data = SerialPort.DATABITS_8;

break;

default:

System.err.println(name+": constructor(): Invalid data bits,switched " + databits);

throw new Exception("Invalid data bits,switched " + databits);

}

} else {

throw new Exception("Invalid data bits=" + databits);

}

if (stopbits >= 1.0 && stopbits <= 2.0) {

if (stopbits == 1.0) {

stop = SerialPort.STOPBITS_1;

} else if (stopbits == 1.5) {

stop = SerialPort.STOPBITS_1_5;

} else if (stopbits == 2.0) {

stop = SerialPort.STOPBITS_2;

} else {

System.err.println(name+": constructor(): Invalid stop bits,switched " + stopbits);

throw new Exception("Invalid stop bits,switched " + stopbits);

}

} else {

System.err.println(name+": constructor(): Invalid stop bits,switched " + stopbits);

throw new Exception("Invalid stop bits " + stopbits);

}

switch (parity) {

case "S":

par = SerialPort.PARITY_SPACE;

break;

case "E":

par = SerialPort.PARITY_EVEN;

break;

case "M":

par = SerialPort.PARITY_MARK;

break;

case "O":

par = SerialPort.PARITY_ODD;

break;

case "N":

par = SerialPort.PARITY_NONE;

break;

default:

System.err.println(name+": constructor(): Invalid parity,switched " + parity);

throw new Exception("Invalid parity,switched " + parity);

}

// Inits

// Try to find the port specified

try {

portId = CommPortIdentifier.getPortIdentifier(comPort);

} catch (Exception e) {

System.err.println(name+": constructor(): No such port "" + comPort+""");

e.printStackTrace();

throw e;

}

// Open the port

try {

serialPort = (SerialPort) portId.open("User Port",2000);

} catch (PortInUseException e) {

System.err.println(name+": constructor(): Could not open port " + comPort);

throw e;

}

// Grab the input stream

try {

inputStream = serialPort.getInputStream();

} catch (IOException e) {

System.err.println(name+": constructor(): Could not get input stream for " + comPort);

throw e;

}

// Set the serial port parameters,no flow control

try {

serialPort.setSerialPortParams(baudrate,data,stop,par);

serialPort.setDTR(false);

serialPort.setRTS(false);

} catch (UnsupportedCommOperationException e) {

System.err.println(name+": constructor(): Error initializing " + comPort);

throw e;

}

}