如何使用OSGi Equinox设置rxtx? [英] how to set rxtx with OSGi Equinox?

问题描述

我正在寻找解决问题的方法.
我正在开发一个必须通过rxtx jar从串行端口读取的包.
启动应用程序时，出现以下错误

I am looking for a solution to my problem.
I am developing a bundle that has to read from the serial port by means of rxtx jar.
When I launch the application, I get the following error

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriver
Exception in thread "Thread-2" java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(Unknown Source)
    at java.lang.Runtime.loadLibrary0(Unknown Source)
    at java.lang.System.loadLibrary(Unknown Source)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:123)
    at ez430.Port.<init>(Port.java:29)

我已经添加了jar来构建路径并将其设置在jVM中.

I have added the jar to build path and set it in the jVM.

请帮助我！

推荐答案

由于OSGi是多平台的，需要照顾捆绑包的出现和消失，因此需要明确指定本机库的处理方式(如rxtx一样)一束.使用包含rxtx jar文件的捆绑软件中的Bundle-NativeCode标头可以完成此操作.可以按操作系统和体系结构指示要加载的本机库.在这种情况下，它可能看起来像:

Since OSGi is multi-platform and needs to take care of appearing and disappearing bundles, the handling of native libraries (as rxtx does) needs to be explicitly specified for a bundle. That is done using a Bundle-NativeCode header in the bundle that includes the rxtx jar file. The native library to load can be indicated per os and architecture. In this case it may look like:

Bundle-NativeCode: lib/Linux/x86_64-unknown-linux-gnu/librxtxSerial.so; 
  osname="Linux";processor="x86-64",
  lib/Windows/i368-mingw32/rxtxSerial.dll;
  osname="Windows"

上面的示例表明，对于Linux x86-64，该库可以在lib/Linux/x86_64-unknown-linux-gnu/librxtxSerial.so中找到，对于Windows(所有体系结构)可以在lib/Windows/i368-mingw32/rxtxSerial.dll中找到.路径在包中是相对的，因此不要忘记在包中包括共享库.

The above example indicates that for Linux x86-64 the library can be found in lib/Linux/x86_64-unknown-linux-gnu/librxtxSerial.so and for Windows (all architectures) in lib/Windows/i368-mingw32/rxtxSerial.dll. Paths are relative in the bundle, therefore don't forget to include the shared libraries in your bundle.

有关更多详细信息，请参见 OSGi核心规范.

For further details, look in the OSGi core specification.

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