java.lang.UnsatisfiedLinkError：加载gnu.io.RXTXCommDriver时抛出的java.library.path中没有rxtxSerial [英] java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriver

问题描述

立即使用Fedora（已安装软件包已安装软件包rxtx-2.2-0.5.20100211.fc15.i686，最新版本为
）。

Fedora using right now (package is installed Package rxtx-2.2-0.5.20100211.fc15.i686 already installed and latest version ).

我用过/尝试过：

# locate librxtxSerial
/home/sun/Downloads/rxtx-2.1-7-bins-r2/Linux/i686-unknown-linux-gnu/librxtxSerial.so
/home/sun/Downloads/rxtx-2.1-7-bins-r2/Linux/ia64-unkown-linux-gnu/librxtxSerial.so
/home/sun/Downloads/rxtx-2.1-7-bins-r2/Linux/x86_64-unknown-linux-gnu/librxtxSerial.so
/home/sun/Downloads/rxtx-2.1-7-bins-r2/Mac_OS_X/librxtxSerial.jnilib
/home/sun/Downloads/rxtx-2.1-7-bins-r2/Solaris/sparc-solaris/sparc32-sun-solaris2.8/librxtxSerial-2.1-7.so
/home/sun/Downloads/rxtx-2.1-7-bins-r2/Solaris/sparc-solaris/sparc32-sun-solaris2.8/librxtxSerial.so
/home/sun/Downloads/rxtx-2.1-7-bins-r2/Solaris/sparc-solaris/sparc64-sun-solaris2.8/librxtxSerial-2.1-7.so
/home/sun/Downloads/rxtx-2.1-7-bins-r2/Solaris/sparc-solaris/sparc64-sun-solaris2.8/librxtxSerial.so
/usr/lib/rxtx/librxtxSerial-2.2pre1.so
/usr/lib/rxtx/librxtxSerial.so

然后使用：

-Djava.library.path=/usr/lib/rxtx/librxtxSerial.so -Djava.library.path=/usr/lib/jni

但是我总是得到以下结果：

But still i get always this following:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriver
Exception in thread "main" java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1681)
    at java.lang.Runtime.loadLibrary0(Runtime.java:840)
    at java.lang.System.loadLibrary(System.java:1047)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at main.Tty.sendCommand1(Tty.java:212)
    at main.Tty.main(Tty.java:236)

如何解决这个问题？

F ollow up：

错误：

-Djava.library。 path = / usr / lib / rxtx -Djava.library.path = / usr / lib / jni

CORRECT

-Djava.library.path = / usr / lib / jni -Djava.library.path = / usr / lib / rxtx

推荐答案

我想问题是你有多个 -Djava.library.path 参数，第二个是覆盖第一个的值。该值也应该是包含库的文件夹的路径，不包括库名。

I guess the problem is that you have multiple -Djava.library.path parameters and the second one is overwriting the value of the first. The value should also be the path to the folder containing the library, not including the library name.

在linux系统上，您应该能够使用冒号组合两个路径参数作为分隔符：

On linux system you should be able to combine both path parameters using a colon as separator:

-Djava.library.path=/usr/lib/rxtx:/usr/lib/jni

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