如何使用Java获取PC中可用串口的列表?

问题描述

我只是运行一些代码来获取cmputer中可用端口的列表，当我有3个可用的com端口时，它返回false.我该如何解决这个问题?

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:错误

推荐答案

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

It appears your setup of the javax.comm API may not be correct. Make sure you have done the following:

1. 将comm.jar文件放置在jre/lib/ext目录中.
2. 将javax.comm.properties文件放置在jre/lib目录中.
3. 将win32com.dll放在jre/bin目录中.

1. Placed the comm.jar file in the jre/lib/ext directory.
2. Placed the javax.comm.properties file in the jre/lib directory.
3. Placed the win32com.dll in the jre/bin directory.

在此处.

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