我使用了以下代码Rhino
Java 中的 JavaScript 引擎:
@Test
public void testRhino() throws ScriptException {
final ScriptEngineManager factory = new ScriptEngineManager();
final ScriptEngine engine = factory.getEngineByName("rhino");
final String raw = "I am the raw value injected";
final ScriptContext ctx = new SimpleScriptContext();
ctx.setAttribute("raw", raw, ScriptContext.ENGINE_SCOPE);
String script = "var result = 'I am a result';";
script += "java.lang.System.out.println(raw);";
script += "'I am a returned value';";
final Object res = engine.eval(script, ctx);
System.out.println(ctx.getAttribute("result"));
System.out.println(res);
}
脚本的输出(使用Rhino
) is:
I am the raw value injected
I am a result
I am a returned value
内Nashorn
JavaScript 引擎,我没有得到任何价值result
:
@Test
public void testNashorn() throws ScriptException {
final ScriptEngineManager factory = new ScriptEngineManager();
final ScriptEngine engine = factory.getEngineByName("nashorn");
final String raw = "I am the raw value injected";
final ScriptContext ctx = new SimpleScriptContext();
ctx.setAttribute("raw", raw, ScriptContext.ENGINE_SCOPE);
String script = "var result = 'I am a result';";
script += "java.lang.System.out.println(raw);";
script += "'I am a returned value';";
final Object res = engine.eval(script, ctx);
System.out.println(ctx.getAttribute("result"));
System.out.println(res);
}
returns
I am the raw value injected
null
I am a returned value
我如何访问的值result
的变量ScriptContext
使用nashorn
engine?