java.lang.UnsatisfiedLinkError中：在任何的java.library.p

我使用javacpp从Java访问CPP。

我曾尝试在文档中提供的示例

CPP代码：

#include <string>

namespace LegacyLibrary {
    class LegacyClass {
        public:
            const std::string& get_property() { return property; }
            void set_property(const std::string& property) { this->property = property; }
            std::string property;
    };
}

Java代码：

import org.bytedeco.javacpp.*;
import org.bytedeco.javacpp.annotation.*;

@Platform(include="LegacyLibrary.h")
@Namespace("LegacyLibrary")
public class LegacyLibrary {
    public static class LegacyClass extends Pointer {
        static { Loader.load(); }
        public LegacyClass() { allocate(); }
        private native void allocate();

        // to call the getter and setter functions 
        public native @StdString String get_property(); public native void set_property(String property);

        // to access the member variable directly
        public native @StdString String property();     public native void property(String property);
    }

    public static void main(String[] args) {
        // Pointer objects allocated in Java get deallocated once they become unreachable,
        // but C++ destructors can still be called in a timely fashion with Pointer.deallocate()
        LegacyClass l = new LegacyClass();
        l.set_property("Hello World!");
        System.out.println(l.property());
    }
}

在Eclipse我的文件夹结构

我收到以下错误，如果我在Eclipse中运行LegacyLibrary.java文件

异常线程“main” java.lang.UnsatisfiedLinkError中：在java.lang.ClassLoader.loadLibrary（来源不明）在java.lang.Runtime.loadLibrary0（来源不明）在java.lang.System中的中的java.library.path没有jniLegacyLibrary .loadLibrary（未知来源）在org.bytedeco.javacpp.Loader.loadLibrary（Loader.java:550）在org.bytedeco.javacpp.Loader.load（Loader.java:415）在org.bytedeco.javacpp.Loader.load （Loader.java:358）在LegacyLibrary $ LegacyClass。（LegacyLibrary.java:8）在LegacyLibrary.main（LegacyLibrary.java:22）

什么是错我的代码？