从OSGi捆绑包调用本机方法时发生UnsatisfiedLinkError [英] UnsatisfiedLinkError While Calling Native Method from OSGi Bundle

问题描述

我使用eclipse File-->New-->Other-->Plug-in Project创建了一个OSGi插件(捆绑包)，称为插件1. 我想在此插件中使用本机.so库.我在插件项目的根目录中添加了libtest_app_wrap1.so.

I have created one OSGi plugin (Bundle) using eclipse File-->New-->Other-->Plug-in Project called plugin 1. I want to use a native .so library in this plugin. I have added libtest_app_wrap1.so at the root of my plugin project.

我的项目结构如下

这是清单文件

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: JniTest
Bundle-SymbolicName: JniTest
Bundle-Version: 1.0.0.qualifier
Bundle-Activator: jnitest.Activator
Bundle-RequiredExecutionEnvironment: JavaSE-1.8
Import-Package: org.osgi.framework;version="1.3.0"
Bundle-NativeCode: libtest_app_wrap1.so; osname=linux; processor=amd64

这是我的Activator类的代码

And this is the code of my Activator class

    package jnitest;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;

public class Activator implements BundleActivator {

    public Activator() {
        System.loadLibrary("test_app_wrap1");
        System.out.println("Library Loaded Successfully.......");
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
     */
    public void start(BundleContext context) throws Exception {
        try {
            test_app.foo();

        } catch (Throwable tr) {
            tr.printStackTrace();

        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
     */
    public void stop(BundleContext context) throws Exception {
        System.out.println("Goodbye World!!");
    }

}

我使用eclipse导出功能从插件项目创建jar文件.输出jar文件包含.so库.

I create jar file from plugin project using eclipse export feature. output jar file contains .so library.

当我调用System.loadLibrary("test_app_wrap1");时，我没有任何异常或错误，但是当我调用方法test_app.foo();时，它却给了我UnsatisfiedLinkError. test_app.foo()是在.so中定义的jni方法.

I don't get any exception or error when I call the System.loadLibrary("test_app_wrap1");, but when I call the method test_app.foo(); it gives me UnsatisfiedLinkError. test_app.foo() is a jni method which is defined in .so.

我没有任何线索可以解决此错误.请帮助解决该问题.

I am not getting any clue to resolve this error. Please help to get it resolve.

这是输出jar的内容

推荐答案

通过以下方式将jar添加到项目中:Project-> Properties-> Libraries-> Add Jar 通过plugin.xml-> Runtime-> ClassPath部分-> Add

Add the jar to the project via: Project->Properties->Libraries->Add Jar Add the jar to the class path via plugin.xml->Runtime->ClassPath section->Add

或 使用以下方法添加jar

or Use following ways to add jar

java -Djava.library.path

并按照以下步骤进行验证:

and verify by following:

System.getProperty("java.library.path")

这篇关于从OSGi捆绑包调用本机方法时发生UnsatisfiedLinkError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！