在 Windows 上使用 RXTX Java 库的 NoSuchPortException? [英] NoSuchPortException using RXTX Java library on Windows?

问题描述

我已按照 http://www.jcontrol 的说明在 Windows 上设置 rxtx.org/download/readme_rxtx_en.html.

我所做的就是将 rxtxSerial.dll 复制到C:\Program Files\Java\jdk1.6.0_07\jre\bin"并将 RXTXcomm.jar 复制到C:\Program Files\Java\jdk1.6.0_07\jre\lib\ext"(我的 JAVA_HOME 变量设置为 C:\Program Files\Java\jdk1.6.0_07\jre)

我还在我的 eclipse 项目中添加了 RXTXcomm.jar.

但是当我运行它时，它仍然显示NoSuchPortException"

<前>开发库==========================================本机库版本 = RXTX-2.0-7pre1Java 库版本 = RXTX-2.0-7pre1java.lang.ClassCastException: gnu.io.RXTXCommDriver 无法转换为 gnu.io.CommDriver 在加载 gnu.io.RXTXCommDriver 时抛出gnu.io.NoSuchPortException在 gnu.io.CommPortIdentifier.getPortIdentifier(CommPortIdentifier.java:218)在 TwoWaySerialComm.connect(TwoWaySerialComm.java:20)在 TwoWaySerialComm.main(TwoWaySerialComm.java:107)

在我的java文件中，我告诉它:

<前>尝试{(new TwoWaySerialComm()).connect("COM4");}

而且我也尝试过 Java Comm API.两者都无法识别我的串行端口，但我确信我正确地遵循了说明.那里有文件.

有人知道它可能是什么吗?

解决方案

您还可以尝试专门为 Windows 实现的替代解决方案.应该有很多可用的，其中之一可以从 http://www.caerustech.com/JCommWin32 获得.php

舒尔茨

I have followed the instructions to setup rxtx on windows from http://www.jcontrol.org/download/readme_rxtx_en.html.

What I did exactly was copy rxtxSerial.dll to "C:\Program Files\Java\jdk1.6.0_07\jre\bin" and copied RXTXcomm.jar to "C:\Program Files\Java\jdk1.6.0_07\jre\lib\ext" (my JAVA_HOME variable is set to C:\Program Files\Java\jdk1.6.0_07\jre)

I also added RXTXcomm.jar to my eclipse project.

But when I run it, it still says "NoSuchPortException"

Devel Library
=========================================
Native lib Version = RXTX-2.0-7pre1
Java lib Version   = RXTX-2.0-7pre1
java.lang.ClassCastException: gnu.io.RXTXCommDriver cannot be cast to gnu.io.CommDriver thrown while loading gnu.io.RXTXCommDriver
gnu.io.NoSuchPortException
    at gnu.io.CommPortIdentifier.getPortIdentifier(CommPortIdentifier.java:218)
    at TwoWaySerialComm.connect(TwoWaySerialComm.java:20)
    at TwoWaySerialComm.main(TwoWaySerialComm.java:107)

In my java file, I tell it:

        try
        {
            (new TwoWaySerialComm()).connect("COM4");
        }

and I've also tried the Java Comm API. Both cannot recognize my serial port but I am sure I followed the instruction correctly. There files are there.

Does anybody have any idea what it could be?

解决方案

You can also try an alternative solution that was specifically implemented for Windows. There should be plenty available, one of them you can get from http://www.caerustech.com/JCommWin32.php

Shultz

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