原來一直以為只有趙學慶一個高手，代碼貼出來嚇我一跳，原來CSDN有這么多扎實人，天天來CSDN值得啊... 
[code=Java] 
    //初始化串口驅動 
        private   boolean   initCommDriver_win32()   {       
        try   { 
        System.loadLibrary( "win32com ");     
        String   driverName   =   "com.sun.comm.Win32Driver ";       
        CommDriver   driver   =   (CommDriver)   Class.forName(driverName).newInstance();       
        driver.initialize();         
        return   true;       
                }catch   (Throwable   e)   {   
                MessageDialog.openInformation(null,   "initDriver ",   "initDriver_Err_Win32Com "); 
                e.printStackTrace();   
                return   false;       
                } 
        } 
        //打開串口 
        private   boolean   OpenComm(String   PortName) 
        { 
  //獲取指定的COM端口       
        try   { 
portIdentifier   =   CommPortIdentifier.getPortIdentifier(PortName); 
}   catch   (NoSuchPortException   e)   { 
e.printStackTrace(); 
return   false; 
} 
//打開端口(3秒打不開則失敗) 
try   { 
serialPort   =   (SerialPort)portIdentifier.open(this.getTitle(),3000); 
}   catch   (PortInUseException   e)   { 
MessageDialog.openInformation(null,   "OpenComm ", "Open_Err "); 
e.printStackTrace(); 
return   false; 
} 
                //設置端口通訊參數   （波特率   ＝   9600，數據位   ＝   8，停止位   ＝   1   ，校驗位   ＝奇校驗） 
                try   { 
                        serialPort.setSerialPortParams(9600, 
                                SerialPort.DATABITS_8, 
                                SerialPort.STOPBITS_1, 
                                SerialPort.PARITY_ODD); 
                }   catch   (UnsupportedCommOperationException   e)   
                { 
                MessageDialog.openInformation(null,   "OpenComm ", "Set_Port "); 
                e.printStackTrace(); 
                return   false; 
                } 
//設置輸入流 
                try   { 
                        inputStream   =   serialPort.getInputStream(); 
                }   catch   (IOException   e)   { 
                MessageDialog.openInformation(null,   "OpenComm ", "Set_InputStream "); 
                e.printStackTrace(); 
                return   false; 
                } 
                //設置輸出流 
                try   { 
outputStream   =   serialPort.getOutputStream(); 
}   catch   (IOException   e)   { 
                MessageDialog.openInformation(null,   "OpenComm ", "Set_OutputStream "); 
                e.printStackTrace(); 
                return   false; 
} 
                //當串口有數據時通知       
                serialPort.notifyOnDataAvailable(true);         
                //當串口通訊中斷時通知         
                serialPort.notifyOnBreakInterrupt(true);   
                //接收數據超時設置 
                try   { 
serialPort.enableReceiveTimeout(30); 
}   catch   (UnsupportedCommOperationException   e)   { 
e.printStackTrace(); 
return   false; 
} 
//設置一個串口數據暫存區 
strBuffer=new   StringBuffer(); 
                //給當前串口添加一個監聽器   DisposeSerialportMessage 
try   { 
serialPort.addEventListener( 
new   SerialPortEventListener() 
{         
                public   void   serialEvent(SerialPortEvent   e) 
                {   
                disposeSerialportMessage(e); 
                } 
        } 
); 
}   catch   (TooManyListenersException   e)   { 
e.printStackTrace(); 
return   false; 
} 

        return   true; 
        } 
[/code]