我想制作一个可移植的opencv
应用程序,该依赖项被添加到maven文件pom.xml
。
简化的代码是:
import org.opencv.core.Mat;
public class Builder {
public static void main(String[] args) {
nu.pattern.OpenCV.loadShared();
System.loadLibrary(org.opencv.core.Core.NATIVE_LIBRARY_NAME);
Mat mat = new Mat(4,3,1);
System.out.println(mat.dump());
}
}
我把这个添加到pom.xml
:
<dependency>
<groupId>org.openpnp</groupId>
<artifactId>opencv</artifactId>
<version>3.2.0-0</version>
<scope>compile</scope>
</dependency>
它适用于java 9的以下警告:
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by nu.pattern.OpenCV$SharedLoader (file:/home/martin/.m2/repository/org/openpnp/opencv/3.2.0-0/opencv-3.2.0-0.jar) to field java.lang.ClassLoader.usr_paths
WARNING: Please consider reporting this to the maintainers of nu.pattern.OpenCV$SharedLoader
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Java HotSpot(TM) 64-Bit Server VM warning: You have loaded library /tmp/opencv_openpnp6598848942071423284/nu/pattern/opencv/linux/x86_64/libopencv_java320.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
101, 115, 47;
108, 105, 98;
47, 108, 105;
98, 111, 112]
更新:以及java 8的以下警告:
Java HotSpot(TM) 64-Bit Server VM warning: You have loaded library/tmp/opencv_openpnp3835511967220002519/nu/pattern/opencv/linux/x86_64/libopencv_java320.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
折叠maven依赖文件夹中的opencv jar会显示所有库都是灰色,如下所示:
如果我忽略此警告并且没有将库与警告消息中提到的命令链接,该怎么办?因为使用java使opencv可移植非常简单,我想知道如果没有问题,那么将来继续这个方法。
我使用JDK 9,Eclipse Oxygen.2,Fedora 27。
将来,应用程序的目标可能是windows。
这是因为Java 9对非法访问进行了新的检查,并且在Java 9发布后常常会出现这种安全警告。永久解决方案是向维护者报告错误并等待他们释放补丁更新。
但是,只有您自担风险,是的,您可以继续使用安全功能,即堆栈防护,具体取决于您正在讨论的此软件包的用途和范围。