windows - 如何修复 Windows 10 中的 Java rxtxSerial.dll 或 jSSC-2.7_x86_64.dll 串口错误？

Question

更新:我找到了使用 jSerialComm 库的解决方案。 (见底部代码)

我有一个程序，我们已经在 Windows 7 机器上运行了很长一段时间，但现在开始引入装有 Windows 10 的机器，程序崩溃了。所以我需要找到解决方案。

错误是 EXCEPTION_ACCESS_VIOLATION 错误。 (见下文)

下面的第一段代码是我自己的代码，它使用了 rxtxSerial.dll 库。它会打开并设置端口参数，但一旦从端口接收到数据就会崩溃。

我也尝试过 jssc.jar 库，但出现相同的 EXCEPTION_ACCESS_VIOLATION 错误。

第二个代码块直接来自 JSSC 示例 WIKI。它在尝试打开端口时立即崩溃。

我正在使用 IntelliJ IDE。

rxtxSerial.dll 错误:

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000180005b00, pid=12340, tid=6016
#
# JRE version: Java(TM) SE Runtime Environment (10.0.1+10) (build 10.0.1+10)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (10.0.1+10, mixed mode, tiered, compressed oops, g1 gc, windows-amd64)
# Problematic frame:
# C  [rxtxSerial.dll+0x5b00]
#
# No core dump will be written. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\Users\jochu\IdeaProjects\WITSReader\hs_err_pid12340.log
#
# If you would like to submit a bug report, please visit:
#  http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

我试过几个版本的rxtxSerial.dll和RXTXcomm.jar

在这一点上，我认为这不是我的代码的问题，而是库甚至 Java SDK 10.0.1 的问题。

更新:我在 Java SDK 11.0.1 和 Javafx SDK 11.0.1 中也有同样的问题

下面是我使用的导致错误的代码。 (仅在 Windows 10 上运行时)rxtxSerial.dll和RXTXcomm.jar需要链接库。

import gnu.io.*;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.TooManyListenersException;

public class Main {

    static CommPortIdentifier[] portId = new CommPortIdentifier[10];
    static Enumeration portList;
    static InputStream inputStream;
    static SerialPort serialPort;
    static String stringBuffer = "";

    public static void main(String[] args) {

        //manually change for comport selection to keep code simple
        int selectedPort = 0;

        // Checking for ports
        portList = CommPortIdentifier.getPortIdentifiers();
        System.out.println("portList... " + portList);
        int comPortCounter = 0;
        while (portList.hasMoreElements()) {
            portId[comPortCounter] = (CommPortIdentifier) portList.nextElement();
            System.out.println(portId[comPortCounter].getName());
            System.out.println("port identified is Serial.. " + portId[comPortCounter].getPortType());
            comPortCounter++;
            if (comPortCounter > 9){
                comPortCounter = 9;
            }
        }

        // opening the port
        try{
            serialPort = (SerialPort) portId[selectedPort].open("SerialTest",500);
            System.out.println("Serial port open: " + portId[selectedPort].getName());
        } catch (PortInUseException e){
            System.out.println("Port in use error");
            return;
        }

        // initiate listening on the port
        try {
            inputStream = serialPort.getInputStream();
            System.out.println("Input Stream... " + inputStream);
        } catch (IOException e) {
            System.out.println("IO Exception");
            return;
        }

        // create the listener
        try {
            serialPort.addEventListener(new ListenerTest());
        } catch (TooManyListenersException e) {
            System.out.println("Too many Listener exception");
            return;
        }
        serialPort.notifyOnDataAvailable(true);

        // set COM port parameters (default 9600, 8, 1 , NONE)
        try {
            serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);

            // no handshaking or other flow control
            serialPort.setFlowControlMode(SerialPort.FLOWCONTROL_NONE);

            // timer on any read of the serial port
            serialPort.enableReceiveTimeout(500);

            System.out.println("Serial port parameters have been set");
        } catch (UnsupportedCommOperationException e) {
            System.out.println("UnSupported comm operation");
            return;
        }
    }

    //Listener Class for the serial port.
    static public class ListenerTest implements SerialPortEventListener {

        @Override
        public void serialEvent(SerialPortEvent event) {

            switch (event.getEventType()) {
                case SerialPortEvent.DATA_AVAILABLE:

                    System.out.println("In SerialEvent");

                    // Wets Serial Port Read
                    try {
                        while (inputStream.available() > 0) {
                            byte[] byteBuffer = new byte[1024];
                            int length = -1;
                            length = inputStream.read(byteBuffer);
                            stringBuffer += new String(byteBuffer, 0, length);
                        }

                        System.out.println(stringBuffer);

                    } catch (IOException e) {
                        System.out.println("IO Exception in SerialEvent()");
                    }

                    break;
            }
        }
    }

}

我还使用以下代码尝试了 jSSC.jar 库。此代码直接来自 jssc 示例 WIKI，但用于跟踪代码崩溃位置的额外 System.out.println 命令除外。

import jssc.SerialPort;
import jssc.SerialPortEvent;
import jssc.SerialPortEventListener;
import jssc.SerialPortException;

public class Main {

    static SerialPort serialPort;

    public static void main(String[] args) {
        serialPort = new SerialPort("COM14");
        try {
            System.out.println("Before openPort command.");
            serialPort.openPort();//Open port
            System.out.println("Port is open.");
            serialPort.setParams(9600, 8, 1, 0);//Set params
            System.out.println("Port Parameters are set.");
            int mask = SerialPort.MASK_RXCHAR + SerialPort.MASK_CTS + SerialPort.MASK_DSR;//Prepare mask
            serialPort.setEventsMask(mask);//Set mask
            System.out.println("Mask is set.");
            serialPort.addEventListener(new SerialPortReader());//Add SerialPortEventListener
            System.out.println("Listener has started.");
        }
        catch (SerialPortException ex) {
            System.out.println(ex);
        }
    }

    /*
     * In this class must implement the method serialEvent, through it we learn about
     * events that happened to our port. But we will not report on all events but only
     * those that we put in the mask. In this case the arrival of the data and change the
     * status lines CTS and DSR
     */
    static class SerialPortReader implements SerialPortEventListener {

        public void serialEvent(SerialPortEvent event) {
            System.out.println("In Listener Event.");
            if(event.isRXCHAR()){//If data is available
                if(event.getEventValue() == 10){//Check bytes count in the input buffer
                    //Read data, if 10 bytes available
                    try {
                        byte buffer[] = serialPort.readBytes(10);
                    }
                    catch (SerialPortException ex) {
                        System.out.println(ex);
                    }
                }
            }
            else if(event.isCTS()){//If CTS line has changed state
                if(event.getEventValue() == 1){//If line is ON
                    System.out.println("CTS - ON");
                }
                else {
                    System.out.println("CTS - OFF");
                }
            }
            else if(event.isDSR()){///If DSR line has changed state
                if(event.getEventValue() == 1){//If line is ON
                    System.out.println("DSR - ON");
                }
                else {
                    System.out.println("DSR - OFF");
                }
            }
        }
    }
}

它在 openPort 命令上生成以下错误。

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000000aeb5bb, pid=12216, tid=16084
#
# JRE version: Java(TM) SE Runtime Environment (10.0.1+10) (build 10.0.1+10)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (10.0.1+10, mixed mode, tiered, compressed oops, g1 gc, windows-amd64)
# Problematic frame:
# C  [jSSC-2.7_x86_64.dll+0xb5bb]
#
# No core dump will be written. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\Users\jochu\IdeaProjects\jsscTest\hs_err_pid12216.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

我希望有人在我之前遇到过这个错误，并找到了解决方案。

我只需要通过 Windows 10 上的监听器读取串行数据。

非常感谢任何帮助!

下面的代码适用于带有 jSerialComm-2.4.0.jar 库的 Windows 10。

import com.fazecast.jSerialComm.SerialPort;
import com.fazecast.jSerialComm.SerialPortDataListener;
import com.fazecast.jSerialComm.SerialPortEvent;


public class Main {

    static SerialPort comPort;
    static String stringBuffer;

    private static final class DataListener implements SerialPortDataListener
    {
        @Override
        public int getListeningEvents() { return SerialPort.LISTENING_EVENT_DATA_AVAILABLE; }

        @Override
        public void serialEvent(SerialPortEvent event)
        {
            //System.out.println("In event listener.");
            if (event.getEventType() != SerialPort.LISTENING_EVENT_DATA_AVAILABLE)
                return;
            //System.out.println("Past event type check.");
            byte[] newData = new byte[comPort.bytesAvailable()];
            int numRead = comPort.readBytes(newData, newData.length);
            stringBuffer = new String(newData,0,numRead);
            //System.out.println("Read " + numRead + " bytes.");
            System.out.println(stringBuffer);


        }
    }

    static public void main(String[] args)
    {
        comPort = SerialPort.getCommPorts()[0];
        comPort.openPort();
        System.out.println("COM port open: " + comPort.getDescriptivePortName());
        DataListener listener = new DataListener();
        comPort.addDataListener(listener);
        System.out.println("Event Listener open.");
    }
}

Answer 1

我对使用 rxtx 的 jRxTx 也有类似的问题。我的程序可以正常运行 2 分钟，然后崩溃并显示相同的错误消息。

我的实现的问题是我向 serialPort 添加了两次相同的 serialEventListener。

serialPort.addEventListener(eventListener);