从java运行R脚本

Question

我在尝试从Java运行R脚本时遇到了一个问题。我真的在互联网上寻找这个问题的答案，但什么都不管用。

求你帮帮我

这是java代码

RConnection c = new RConnection();
                double d[] = c.eval("rnorm(10)").asDoubles();
                org.rosuda.REngine.REXP x0 = c.eval("R.version.string");
                System.out.println(x0.asString());
                Runtime.getRuntime().exec("Rscript TestR.R");

以下是当我添加Runtime.getRuntime（）. exec（"Rcript"rScriptFileName）时抛出的错误消息：

Answer 1

对我有用的是使用人情解释器下载人情

private static final ThreadLocal<ScriptEngine> ENGINE = new ThreadLocal<>();

public static void main(String[] args) {
    ScriptEngine engine = getScriptEngine();
    try {
        System.out.println("myScript");
        engine.eval(new java.io.FileReader("src/myScript.R"));
        engine.eval("Square(19)");
    } catch (FileNotFoundException | NullPointerException | ScriptException e) {
        System.out.println("An exception occured: " + e.getMessage());
        e.printStackTrace();
    }
}

private static ScriptEngine getScriptEngine() {
    ScriptEngine engine = ENGINE.get();
    if (engine == null) {
        // Create a new ScriptEngine for this thread if one does not exist.
        RenjinScriptEngineFactory factory = new RenjinScriptEngineFactory();
        engine = factory.getScriptEngine();
        ENGINE.set(engine);
    }
    return engine;
}