我正在使用javacpp从Java访问cpp。
我已经尝试过文档中提供的示例
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());
}
}
eclipse中的我的文件夹结构
如果我在Eclipse中运行LegacyLibrary.java文件,我会收到以下错误
线程“main”中的异常java.lang.UnsatisfiedLinkError:java.library.path中没有jniLegacyLibrary at java.lang.ClassLoader.loadLibrary(Unknown Source) at java.lang.Runtime.loadLibrary0(Unknown Source) 在java.lang.System.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)
我的代码出了什么问题?