Java Code Examples for javax.script.ScriptEngineManager

The following examples show how to use javax.script.ScriptEngineManager. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: openjdk-jdk8u   Source File: InvocableTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
@Test
/**
 * Check that calling method on null 'thiz' results in
 * IllegalArgumentException.
 */
public void invokeMethodNullThizTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    try {
        ((Invocable) e).invokeMethod(null, "toString");
        fail("should have thrown IllegalArgumentException");
    } catch (final Exception exp) {
        if (!(exp instanceof IllegalArgumentException)) {
            exp.printStackTrace();
            fail(exp.getMessage());
        }
    }
}
 
Example 2
Source Project: hottub   Source File: MultiScopes.java    License: GNU General Public License v2.0 6 votes vote down vote up
public static void main(final String[] args) throws Exception {
    final ScriptEngineManager manager = new ScriptEngineManager();
    final ScriptEngine engine = manager.getEngineByName("nashorn");

    engine.put("x", "hello");
    // print global variable "x"
    engine.eval("print(x);");
    // the above line prints "hello"

    // Now, pass a different script context
    final ScriptContext newContext = new SimpleScriptContext();
    newContext.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE);
    final Bindings engineScope = newContext.getBindings(ScriptContext.ENGINE_SCOPE);

    // add new variable "x" to the new engineScope
    engineScope.put("x", "world");

    // execute the same script - but this time pass a different script context
    engine.eval("print(x);", newContext);
    // the above line prints "world"
}
 
Example 3
@Test
public void hidingInternalObjectsForJSObjectTest() throws Exception {
    final ScriptEngineManager engineManager = new ScriptEngineManager();
    final ScriptEngine e = engineManager.getEngineByName("nashorn");

    final String code = "function func(obj) { obj.foo = [5, 5]; obj.bar = {} }";
    e.eval(code);

    // call the exposed function but pass user defined JSObject impl as argument
    ((Invocable)e).invokeFunction("func", new AbstractJSObject() {
        @Override
        public void setMember(final String name, final Object value) {
            // make sure that wrapped objects are passed (and not internal impl. objects)
            assertTrue(value.getClass() == ScriptObjectMirror.class);
        }
    });
}
 
Example 4
@Test
// Named property access on a JSObject
public void namedAccessTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    try {
        final MapWrapperObject obj = new MapWrapperObject();
        e.put("obj", obj);
        obj.getMap().put("foo", "bar");

        // property-like access on MapWrapperObject objects
        assertEquals(e.eval("obj.foo"), "bar");
        e.eval("obj.foo = 'hello'");
        assertEquals(e.eval("'foo' in obj"), Boolean.TRUE);
        assertEquals(e.eval("obj.foo"), "hello");
        assertEquals(obj.getMap().get("foo"), "hello");
        e.eval("delete obj.foo");
        assertFalse(obj.getMap().containsKey("foo"));
        assertEquals(e.eval("'foo' in obj"), Boolean.FALSE);
    } catch (final Exception exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}
 
Example 5
@Test
public void factoryClassLoaderTest() {
    final ScriptEngineManager sm = new ScriptEngineManager();
    for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
        if (fac instanceof NashornScriptEngineFactory) {
            final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
            final MyClassLoader loader = new MyClassLoader();
            // set the classloader as app class loader
            final ScriptEngine e = nfac.getScriptEngine(loader);
            try {
                e.eval("Packages.foo");
                // check that the class loader was attempted
                assertTrue(loader.reached(), "did not reach class loader!");
            } catch (final ScriptException se) {
                se.printStackTrace();
                fail(se.getMessage());
            }
            return;
        }
    }

    fail("Cannot find nashorn factory!");
}
 
Example 6
Source Project: openjdk-jdk9   Source File: InvocableTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
@Test
/**
 * Check that we can call invokeMethod on an object that we got by
 * evaluating script with different Context set.
 */
public void invokeMethodDifferentContextTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    try {
        // define an object with method on it
        final Object obj = e.eval("({ hello: function() { return 'Hello World!'; } })");

        final ScriptContext ctxt = new SimpleScriptContext();
        ctxt.setBindings(e.createBindings(), ScriptContext.ENGINE_SCOPE);
        e.setContext(ctxt);

        // invoke 'func' on obj - but with current script context changed
        final Object res = ((Invocable) e).invokeMethod(obj, "hello");
        assertEquals(res, "Hello World!");
    } catch (final Exception exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}
 
Example 7
@Test
public void windowItemTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    final Window window = new Window();

    try {
        e.put("window", window);
        final String item1 = (String)e.eval("window.item(65535)");
        assertEquals(item1, "ffff");
        final String item2 = (String)e.eval("window.item(255)");
        assertEquals(item2, "ff");
    } catch (final Exception exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}
 
Example 8
Source Project: jdk8u60   Source File: InvocableTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
@Test
/**
 * Check that calling method on non-script object 'thiz' results in
 * IllegalArgumentException.
 */
public void invokeMethodNonScriptObjectThizTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    try {
        ((Invocable) e).invokeMethod(new Object(), "toString");
        fail("should have thrown IllegalArgumentException");
    } catch (final Exception exp) {
        if (!(exp instanceof IllegalArgumentException)) {
            exp.printStackTrace();
            fail(exp.getMessage());
        }
    }
}
 
Example 9
@Test
/**
 * Tests whether invocation of a JavaScript method through a variable arity
 * Java method will pass the vararg array. Both non-vararg and vararg
 * JavaScript methods are tested.
 *
 * @throws ScriptException
 */
public void variableArityInterfaceTest() throws ScriptException {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    e.eval(
            "function test1(i, strings) {"
            + "    return 'i == ' + i + ', strings instanceof java.lang.String[] == ' + (strings instanceof Java.type('java.lang.String[]')) + ', strings == ' + java.util.Arrays.toString(strings)"
            + "}"
            + "function test2() {"
            + "    return 'arguments[0] == ' + arguments[0] + ', arguments[1] instanceof java.lang.String[] == ' + (arguments[1] instanceof Java.type('java.lang.String[]')) + ', arguments[1] == ' + java.util.Arrays.toString(arguments[1])"
            + "}");
    final VariableArityTestInterface itf = ((Invocable) e).getInterface(VariableArityTestInterface.class);
    Assert.assertEquals(itf.test1(42, "a", "b"), "i == 42, strings instanceof java.lang.String[] == true, strings == [a, b]");
    Assert.assertEquals(itf.test2(44, "c", "d", "e"), "arguments[0] == 44, arguments[1] instanceof java.lang.String[] == true, arguments[1] == [c, d, e]");
}
 
Example 10
Source Project: jdk8u60   Source File: InvocableTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
@Test
/**
 * Check that invokeMethod throws NPE on null method name.
 */
public void invokeMethodNullNameTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    try {
        final Object obj = e.eval("({})");
        ((Invocable) e).invokeMethod(obj, null);
        fail("should have thrown NPE");
    } catch (final Exception exp) {
        if (!(exp instanceof NullPointerException)) {
            exp.printStackTrace();
            fail(exp.getMessage());
        }
    }
}
 
Example 11
Source Project: openjdk-jdk8u   Source File: RunnableImpl.java    License: GNU General Public License v2.0 6 votes vote down vote up
public static void main(final String[] args) throws Exception {
    final ScriptEngineManager manager = new ScriptEngineManager();
    final ScriptEngine engine = manager.getEngineByName("nashorn");

    // JavaScript code in a String
    final String script = "function run() { print('run called'); }";

    // evaluate script
    engine.eval(script);

    final Invocable inv = (Invocable) engine;

    // get Runnable interface object from engine. This interface methods
    // are implemented by script functions with the matching name.
    final Runnable r = inv.getInterface(Runnable.class);

    // start a new thread that runs the script implemented
    // runnable interface
    final Thread th = new Thread(r);
    th.start();
    th.join();
}
 
Example 12
@Test
public void securitySystemLoadLibrary() {
    if (System.getSecurityManager() == null) {
        // pass vacuously
        return;
    }

    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    try {
        e.eval("java.lang.System.loadLibrary('foo');");
        fail("should have thrown SecurityException");
    } catch (final Exception exp) {
        if (exp instanceof SecurityException) {
            log("got " + exp + " as expected");
        } else {
            fail(exp.getMessage());
        }
    }
}
 
Example 13
@Test
public void argumentsWithTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    String[] args = new String[] { "hello", "world" };
    try {
        e.put("arguments", args);
        Object arg0 = e.eval("var imports = new JavaImporter(java.io); " +
                " with(imports) { arguments[0] }");
        Object arg1 = e.eval("var imports = new JavaImporter(java.util, java.io); " +
                " with(imports) { arguments[1] }");
        assertEquals(args[0], arg0);
        assertEquals(args[1], arg1);
    } catch (final Exception exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}
 
Example 14
Source Project: openjdk-jdk8u   Source File: ScopeTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * Test "slow" scopes involving {@code with} and {@code eval} statements for shared script classes with multiple globals.
 * @throws ScriptException
 * @throws InterruptedException
 */
@Test
public static void testSlowScope() throws ScriptException, InterruptedException {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    for (int i = 0; i < 100; i++) {
        final Bindings b = e.createBindings();
        final ScriptContext ctxt = new SimpleScriptContext();
        ctxt.setBindings(b, ScriptContext.ENGINE_SCOPE);

        e.eval(new URLReader(ScopeTest.class.getResource("resources/witheval.js")), ctxt);
        assertEquals(e.eval("a", ctxt), 1);
        assertEquals(b.get("a"), 1);
        assertEquals(e.eval("b", ctxt), 3);
        assertEquals(b.get("b"), 3);
        assertEquals(e.eval("c", ctxt), 10);
        assertEquals(b.get("c"), 10);
    }
}
 
Example 15
Source Project: openjdk-8-source   Source File: ScopeTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
@Test
public void userEngineScopeBindingsRetentionTest() throws ScriptException {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    final ScriptContext newContext = new SimpleScriptContext();
    newContext.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);
    e.eval("function foo() {}", newContext);

    // definition retained with user's ENGINE_SCOPE Binding
    assertTrue(e.eval("typeof foo", newContext).equals("function"));

    final Bindings oldBindings = newContext.getBindings(ScriptContext.ENGINE_SCOPE);
    // but not in another ENGINE_SCOPE binding
    newContext.setBindings(new SimpleBindings(), ScriptContext.ENGINE_SCOPE);
    assertTrue(e.eval("typeof foo", newContext).equals("undefined"));

    // restore ENGINE_SCOPE and check again
    newContext.setBindings(oldBindings, ScriptContext.ENGINE_SCOPE);
    assertTrue(e.eval("typeof foo", newContext).equals("function"));
}
 
Example 16
Source Project: common_gui_tools   Source File: RunScript.java    License: Apache License 2.0 6 votes vote down vote up
/**
 * 支持的脚本类型.
 */
private String[] getScriptTypes() {
    ScriptEngineManager sem = new ScriptEngineManager();
    List<ScriptEngineFactory> factorys = sem.getEngineFactories();
    Set<String> languages = new LinkedHashSet<String>();
    for (ScriptEngineFactory factory : factorys) {
        languages.add(factory.getLanguageName());
    }
    String[] types = new String[languages.size()];
    int i = 0;
    for (String name : languages) {
        types[i] = name;
        i++;
    }
    return types;
}
 
Example 17
Source Project: dubbox-hystrix   Source File: ScriptRouter.java    License: Apache License 2.0 6 votes vote down vote up
public ScriptRouter(URL url) {
    this.url = url;
    String type = url.getParameter(Constants.TYPE_KEY);
    this.priority = url.getParameter(Constants.PRIORITY_KEY, 0);
    String rule = url.getParameterAndDecoded(Constants.RULE_KEY);
    if (type == null || type.length() == 0){
        type = Constants.DEFAULT_SCRIPT_TYPE_KEY;
    }
    if (rule == null || rule.length() == 0){
        throw new IllegalStateException(new IllegalStateException("route rule can not be empty. rule:" + rule));
    }
    ScriptEngine engine = engines.get(type);
    if (engine == null){
        engine = new ScriptEngineManager().getEngineByName(type);
        if (engine == null) {
            throw new IllegalStateException(new IllegalStateException("Unsupported route rule type: " + type + ", rule: " + rule));
        }
        engines.put(type, engine);
    }
    this.engine = engine;
    this.rule = rule;
}
 
Example 18
Source Project: jdk8u60   Source File: InvocableTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
@Test
/**
 * Try passing non-interface Class object for interface implementation.
 */
public void getNonInterfaceGetInterfaceTest() {
    final ScriptEngineManager manager = new ScriptEngineManager();
    final ScriptEngine engine = manager.getEngineByName("nashorn");
    try {
        log(Objects.toString(((Invocable) engine).getInterface(Object.class)));
        fail("Should have thrown IllegalArgumentException");
    } catch (final Exception exp) {
        if (!(exp instanceof IllegalArgumentException)) {
            fail("IllegalArgumentException expected, got " + exp);
        }
    }
}
 
Example 19
@Test
    public void testJS() {
        // https://stackoverflow.com/questions/22492641/java8-js-nashorn-convert-array-to-java-array
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName("javascript");
        try {
            engine.put("line", "刘长炯 微信号weblogic (10.3.2) [46a5432f8fdea99a6186a927e8da5db7a51854ac]");
//            engine.put("regex", )
            String regex = "/(.*?) \\((.*?)\\) \\[(.*?)\\]/";
            String[] value = (String[])engine.eval("Java.to(line.match(" + regex + "),\"java.lang.String[]\" );");
            System.out.println(value.length);
            System.out.println(value[1]);
            String[] result = {"刘长炯 微信号weblogic (10.3.2) [46a5432f8fdea99a6186a927e8da5db7a51854ac]",
                    "刘长炯 微信号weblogic", "10.3.2", "46a5432f8fdea99a6186a927e8da5db7a51854ac"};
            Assert.assertArrayEquals("result shold match", result, value);
//            Collection<Object> val = value.values();
//            if(value.isArray()) {
//                System.out.println(value.getMember("1"));
//            }
        } catch (ScriptException e) {
            e.printStackTrace();
        }
    }
 
Example 20
@Test
// a factory JSObject
public void factoryJSObjectTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    try {
        e.put("Factory", new Factory());

        // check new on Factory
        assertEquals(e.eval("typeof Factory"), "function");
        assertEquals(e.eval("typeof new Factory()"), "object");
        assertEquals(e.eval("(new Factory()) instanceof java.util.Map"), Boolean.TRUE);
    } catch (final Exception exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}
 
Example 21
Source Project: TencentKona-8   Source File: InvocableTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
@Test
/**
 * Check that invokeMethod throws NPE on null method name.
 */
public void invokeMethodNullNameTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    try {
        final Object obj = e.eval("({})");
        ((Invocable) e).invokeMethod(obj, null);
        fail("should have thrown NPE");
    } catch (final Exception exp) {
        if (!(exp instanceof NullPointerException)) {
            exp.printStackTrace();
            fail(exp.getMessage());
        }
    }
}
 
Example 22
Source Project: hottub   Source File: ScriptEngineTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
@Test
public void windowItemTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    final Window window = new Window();

    try {
        e.put("window", window);
        final String item1 = (String)e.eval("window.item(65535)");
        assertEquals(item1, "ffff");
        final String item2 = (String)e.eval("window.item(255)");
        assertEquals(item2, "ff");
    } catch (final Exception exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}
 
Example 23
@BeforeEach
void setUp() {
    final MeterRegistry meterRegistry = new SimpleMeterRegistry();
    final ScriptManagerProperties scriptManagerProperties = new ScriptManagerProperties();
    final TaskScheduler taskScheduler = new ConcurrentTaskScheduler();
    final ExecutorService executorService = Executors.newCachedThreadPool();
    final ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
    final ResourceLoader resourceLoader = new DefaultResourceLoader();
    final ScriptManager scriptManager = new ScriptManager(
        scriptManagerProperties,
        taskScheduler,
        executorService,
        scriptEngineManager,
        resourceLoader,
        meterRegistry
    );
    this.scriptProperties = new ClusterSelectorScriptProperties();
    this.clusterSelectorScript = new ClusterSelectorManagedScript(
        scriptManager,
        this.scriptProperties,
        meterRegistry
    );
}
 
Example 24
public static void main(final String[] args) throws Exception {
    final ScriptEngineManager manager = new ScriptEngineManager();
    final ScriptEngine engine = manager.getEngineByName("nashorn");

    engine.put("x", "hello");
    // print global variable "x"
    engine.eval("print(x);");
    // the above line prints "hello"

    // Now, pass a different script context
    final ScriptContext newContext = new SimpleScriptContext();
    newContext.setBindings(engine.createBindings(), ScriptContext.ENGINE_SCOPE);
    final Bindings engineScope = newContext.getBindings(ScriptContext.ENGINE_SCOPE);

    // add new variable "x" to the new engineScope
    engineScope.put("x", "world");

    // execute the same script - but this time pass a different script context
    engine.eval("print(x);", newContext);
    // the above line prints "world"
}
 
Example 25
@Test
public void refErrorForUndeclaredAccessTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");
    try {
        e.eval("try { print(foo); throw 'no ref error' } catch (e) { if (!(e instanceof ReferenceError)) throw e; }");
    } catch (final Exception exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}
 
Example 26
Source Project: ATest   Source File: JavaScriptFunction.java    License: GNU General Public License v3.0 5 votes vote down vote up
public String jsFunction(String jsStr) {
	ScriptEngineManager manager = new ScriptEngineManager();
	ScriptEngine engine = manager.getEngineByName("Nashorn");
	try {
		return (String) engine.eval(jsStr);
	} catch (ScriptException e) {
		return "";
	}
}
 
Example 27
@Test
public void checkThisForJSObjectEval() throws Exception {
    final ScriptEngineManager engineManager = new ScriptEngineManager();
    final ScriptEngine e = engineManager.getEngineByName("nashorn");
    final JSObject jsobj = (JSObject)e.eval("({foo: 23, bar: 'hello' })");
    assertEquals(((Number)jsobj.eval("this.foo")).intValue(), 23);
    assertEquals(jsobj.eval("this.bar"), "hello");
    assertEquals(jsobj.eval("String(this)"), "[object Object]");
    final Object global = e.eval("this");
    assertFalse(global.equals(jsobj.eval("this")));
}
 
Example 28
@Test
public void compileAndEvalInDiffContextTest() throws ScriptException {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine engine = m.getEngineByName("js");
    final Compilable compilable = (Compilable) engine;
    final CompiledScript compiledScript = compilable.compile("foo");
    final ScriptContext ctxt = new SimpleScriptContext();
    ctxt.setAttribute("foo", "hello", ScriptContext.ENGINE_SCOPE);
    assertEquals(compiledScript.eval(ctxt), "hello");
}
 
Example 29
Source Project: spring4-understanding   Source File: ScriptTemplateView.java    License: Apache License 2.0 5 votes vote down vote up
protected ScriptEngine createEngineFromName() {
	if (this.scriptEngineManager == null) {
		this.scriptEngineManager = new ScriptEngineManager(getApplicationContext().getClassLoader());
	}

	ScriptEngine engine = StandardScriptUtils.retrieveEngineByName(this.scriptEngineManager, this.engineName);
	loadScripts(engine);
	return engine;
}
 
Example 30
@Test
public void accessGlobalTest() {
    final ScriptEngineManager m = new ScriptEngineManager();
    final ScriptEngine e = m.getEngineByName("nashorn");

    try {
        e.eval("var x = 'hello'");
        assertEquals(e.get("x"), "hello");
    } catch (final ScriptException exp) {
        exp.printStackTrace();
        fail(exp.getMessage());
    }
}