尝试以下
public static void main(String [] args) throws Exception {
ScriptEngine engine = new ScriptEngineManager().getEngineByName ("rhino");
data data = new data();
Context.enter().getWrapFactory().setJavaPrimitiveWrap(false);
try
{
engine.eval("function test(data) { return data.get('value1') + 5;};");
System.out.println("Result:" + ((Invocable)engine).invokeFunction("test", data));
}
catch (Exception e)
{
e.printStackTrace();
}
}
public static class data
{
Double value = 1.0d;
public Number get(String arg) { return value; }
}
另外，您可以修改javascript函数以将值显式转换为数字：
function test(data) { return parseInt(data.get('value1'), 10) + 5;}
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