Question

所以我试图通过JRI从Java中使用R.我正在使用Eclipse的RJava插件，rJava附带的两个测试文件工作正常（rtest和rtest2）。但是当试图运行这个简单的代码片段时，我得到了一个EXCEPTION_ACCESS_VIOLATION：

public static void main(String... args) {
    Rengine re = new Rengine();

    if (!re.waitForR()) {
        System.out.println("Unable to load R");
        return;
    } else
        System.out.println("Connected to R");

    re.eval("x=c(1:10)");
    double d = re.eval("mean(x)").asDouble();
    System.out.println(d);
}

我得到的输出：

    Connected to R

A fatal error has been detected by the Java Runtime Environment:

 EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000006c726096, pid=5284, tid=7868

JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)
Java VM: Java HotSpot(TM) 64-Bit Server VM (25.25-b02 mixed mode windows-amd64 compressed oops)
Problematic frame:
C  [R.dll+0x26096]

Failed to write core dump. Minidumps are not enabled by default on client versions of Windows

An error report file with more information is saved as:
C:\Users\gebruiker\workspace64\RTest\hs_err_pid5284.log

If you would like to submit a bug report, please visit:
  http://bugreport.sun.com/bugreport/crash.jsp
The crash happened outside the Java Virtual Machine in native code.
See problematic frame for where to report the bug.

完整的日志：http://pastebin.com/18wHWihB

我在日志中看到这个，是否需要对它做些什么？（错误使用eval函数？我刚刚复制了一个例子......）

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j  org.rosuda.JRI.Rengine.rniParse(Ljava/lang/String;I)J+0
j  org.rosuda.JRI.Rengine.eval(Ljava/lang/String;Z)Lorg/rosuda/JRI/REXP;+53
j  org.rosuda.JRI.Rengine.eval(Ljava/lang/String;)Lorg/rosuda/JRI/REXP;+3
j  Main.main([Ljava/lang/String;)V+35
v  ~StubRoutines::call_stub

如果有人可以提供帮助，我会感到茫然，并会非常感激：）

Answer 1

Instanitiate rengine如下所示，我刚刚将默认大小设为10。

String args1[] = new String[10];
Rengine rengine = new Rengine(args, false, null);

Answer 2

您必须在R_HOME中设置环境变量JVM environment。将它设置在您的环境变量中无法正常工作，JVM NOT 。我自己想出来了。

尝试使用RJava时EXCEPTION_ACCESS_VIOLATION

2 个答案: