Question

在控制台中使用R进行一些练习之后，我尝试将其连接到我的IDE（NetBeans）。因此，我下载并安装了“ rJava”，但是经过一些尝试，我遇到了IDE看不到库“ jri.dll”的问题，尽管它位于Java路径中。其他代码输出将看到此文件。

NetBeand IDE，Windows 7，Java 8、64x，PATH = -Djava.library.path =“ C：\ Program Files \ R \ R-3.5.3 \ library \ rJava \ jri \ x64”，项目中的库-JRI，TestR，TestConsole，路径包含jri.dll，R.dll，Rblas.dll，Rgraphapp.dll，Riconv.dll，Rlapack.dll

public class Jri {
    public static void main(String[] args) {
        String[] paths = System.getProperty("java.library.path").split(";");

        for (String path : paths) {
            File file = new File(path + "/jri.dll");
            System.out.printf("file: %s  exists: %s%n", file, file.exists());
        }
        System.loadLibrary("jri.dll");
    }
}

2。

public class TestR {

    public static void main(String args[]) {
        Runtime.getRuntime().loadLibrary("jri");
        System.out.println("Library Loaded.");
        if (!Rengine.versionCheck()) {
            System.err.println("Java version mismatch.");
            System.exit(1);
        }
        String my[] = {"--vanilla"};
        Rengine re = new Rengine(my, false, new TextConsole());
        if (!re.waitForR()) {
            System.out.println("Cannot load R");
            System.exit(1);
        }
        REXP result = re.eval("mean(1:6)");
        System.out.println("rexp: " + result.asDouble());
    }
}

输出是

file: C:\Program Files\R\R-3.5.3\library\rJava\jri\x64\jri.dll  exists: true
Exception in thread "main" java.lang.UnsatisfiedLinkError: no jri.dll in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867)
    at java.lang.Runtime.loadLibrary0(Runtime.java:870)
    at java.lang.System.loadLibrary(System.java:1122)
    at testr.Jri.main(Jri.java:24)
C:\Users\KSmirnov\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1

退货

Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Program Files\R\R-3.5.3\library\rJava\jri\x64\jri.dll: Can't find dependent libraries
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857)
    at java.lang.Runtime.loadLibrary0(Runtime.java:870)
    at java.lang.Runtime.loadLibrary(Runtime.java:858)
    at testr.TestR.main(TestR.java:18)
C:\Users\KSmirnov\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1

我如何使其起作用？预先感谢。

Jri.dll存在但不存在-怎么可能？

0 个答案: