Rhino:如何从Java调用JS函数

我正在使用Mozilla Rhino 1.7r2(不是JDK版本),我想从Java调用JS函数。

我的JSfunction是这样的:

function abc(x,y) { return x+y } 

我该怎么做呢?

编辑:( JS函数在一个单独的文件中)

 String script = "function abc(x,y) {return x+y;}"; Context context = Context.enter(); try { ScriptableObject scope = context.initStandardObjects(); Scriptable that = context.newObject(scope); Function fct = context.compileFunction(scope, script, "script", 1, null); Object result = fct.call( context, scope, that, new Object[] {2, 3}); System.out.println(Context.jsToJava(result, int.class)); } finally { Context.exit(); } 

更新:当函数在范围中加载时,以及其他函数和变量

 String script = "function abc(x,y) {return x+y;}" + "function def(u,v) {return uv;}"; Context context = Context.enter(); try { ScriptableObject scope = context.initStandardObjects(); context.evaluateString(scope, script, "script", 1, null); Function fct = (Function)scope.get("abc", scope); Object result = fct.call( context, scope, scope, new Object[] {2, 3}); System.out.println(Context.jsToJava(result, int.class)); } finally { Context.exit(); }