如何使用 Java 获取我的电脑中可用串行端口的列表?

I just run some codes to get a list of available ports n my cmputer and it returned me false when I have 3 com ports that are free. How do I solve this prob?

我的代码:

public static void main(String[] args) {
        //SerialParameters params=new SerialParameters();
       // System.out.println(CommPortIdentifier.PORT_SERIAL );
        Enumeration portList = CommPortIdentifier.getPortIdentifiers();
        System.out.println(portList.hasMoreElements());
        while(portList.hasMoreElements()){
            System.out.println("Has more elements");
             CommPortIdentifier portId = (CommPortIdentifier) portList.nextElement();
               if (portId.getPortType() == CommPortIdentifier.PORT_PARALLEL) {
                    System.out.println(portId.getName());
               }
               else{
                     System.out.println(portId.getName());
               }

        }
}

输出:假的

推荐答案

看来您的 javax.comm API 设置可能不正确.确保您已完成以下操作: