java - 在java中获取USB调制解调器连接的com端口

Question

如何在java程序中获取USB Edge调制解调器连接的COM端口。需要快速帮助。 请告诉我使用哪个库来获取 com.. 除了 javax.comm 之外。我尝试过但失败了。 我没有找到正确安装它的方法，它不断地向我显示错误。 :(

package commtest;

import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.Formatter;
import org.smslib.helper.CommPortIdentifier;
import org.smslib.helper.SerialPort;

public class CommTest
{
    private static final String _NO_DEVICE_FOUND = "  no device found";

    private final static Formatter _formatter = new Formatter(System.out);

    static CommPortIdentifier portId;

    static Enumeration<CommPortIdentifier> portList;

    static int bauds[] = { 9600, 14400, 19200, 28800, 33600, 38400, 56000, 57600, 115200 };

    /**
     * Wrapper around {@link CommPortIdentifier#getPortIdentifiers()} to be
     * avoid unchecked warnings.
     */
    private static Enumeration<CommPortIdentifier> getCleanPortIdentifiers()
    {
        return CommPortIdentifier.getPortIdentifiers();
    }

    public static void main(String[] args)
    {
        System.out.println("\nSearching for devices...");
        portList = getCleanPortIdentifiers();
        while (portList.hasMoreElements())
        {
            portId = portList.nextElement();
            if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL)
            {
                _formatter.format("%nFound port: %-5s%n", portId.getName());
                for (int i = 0; i < bauds.length; i++)
                {
                    SerialPort serialPort = null;
                    _formatter.format("       Trying at %6d...", bauds[i]);
                    try
                    {
                        InputStream inStream;
                        OutputStream outStream;
                        int c;
                        String response;
                        serialPort = portId.open("SMSLibCommTester", 1971);
                        serialPort.setFlowControlMode(SerialPort.FLOWCONTROL_RTSCTS_IN);
                        serialPort.setSerialPortParams(bauds[i], SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
                        inStream = serialPort.getInputStream();
                        outStream = serialPort.getOutputStream();
                        serialPort.enableReceiveTimeout(1000);
                        c = inStream.read();
                        while (c != -1)
                            c = inStream.read();
                        outStream.write('A');
                        outStream.write('T');
                        outStream.write('\r');
                        Thread.sleep(1000);
                        response = "";
                        StringBuilder sb = new StringBuilder();
                        c = inStream.read();
                        while (c != -1)
                        {
                            sb.append((char) c);
                            c = inStream.read();
                        }
                        response = sb.toString();
                        if (response.indexOf("OK") >= 0)
                        {
                            try
                            {
                                System.out.print("  Getting Info...");
                                outStream.write('A');
                                outStream.write('T');
                                outStream.write('+');
                                outStream.write('C');
                                outStream.write('G');
                                outStream.write('M');
                                outStream.write('M');
                                outStream.write('\r');
                                response = "";
                                c = inStream.read();
                                while (c != -1)
                                {
                                    response += (char) c;
                                    c = inStream.read();
                                }
                                System.out.println(" Found: " + response.replaceAll("\\s+OK\\s+", "").replaceAll("\n", "").replaceAll("\r", ""));
                            }
                            catch (Exception e)
                            {
                                System.out.println(_NO_DEVICE_FOUND);
                            }
                        }
                        else
                        {
                            System.out.println(_NO_DEVICE_FOUND);
                        }
                    }
                    catch (Exception e)
                    {
                        System.out.print(_NO_DEVICE_FOUND);
                        Throwable cause = e;
                        while (cause.getCause() != null)
                        {
                            cause = cause.getCause();
                        }
                        System.out.println(" (" + cause.getMessage() + ")");
                    }
                    finally
                    {
                        if (serialPort != null)
                        {
                            serialPort.close();
                        }
                    }
                }
            }
        }
        System.out.println("\nTest complete.");
    }
} 

Answer 1

这与USB、AT命令等无关...如果你仔细阅读错误消息，你就会得到答案:

win32com.dll: Can't load IA 32-bit .dll on a AMD 64-bit. 

该主题已在此处解决:Javax.comm API on 64-bit Windows