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如何在java中调用js方法

發布時間:2025/6/15 编程问答 17 豆豆
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[java] view plain copy/* * 加載腳本引擎,并在java中調用js方法 */ public void test2() { ScriptEngineManager manager = new ScriptEngineManager(); ScriptEngine engine = manager.getEngineByName("javascript"); try { String str="2&1"; Double d = (Double) engine.eval(str); Integer i=d.intValue(); System.out.println(i); } catch (ScriptException ex) { ex.printStackTrace(); } } [java] view plain copy/* * 在java中調用js,jdk1.6中有加載js引擎類,然后由它來調用js方法。 * 并通過JDK平臺給script的方法中的形參賦值 */ public void test(String name) { ScriptEngineManager sem = new ScriptEngineManager(); /* *sem.getEngineByExtension(String extension)參數為js sem.getEngineByMimeType(String mimeType) 參數為application/javascript 或者text/javascript sem.getEngineByName(String shortName)參數為js或javascript或JavaScript */ ScriptEngine se = sem.getEngineByName("js"); try { String script = "function say(){ return 'hello,'"+name+"; }"; se.eval(script); Invocable inv2 = (Invocable) se; String res=(String)inv2.invokeFunction("say",name); System.out.println(res); } catch(Exception e) { e.printStackTrace(); } } [java] view plain copy/* * 演示如何將java中對象作為js中全局變量,同時演示將file類賦給腳本語言,并獲得其屬性。 */ public void testScriptVariables() { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine=sem.getEngineByName("js"); File file=new File("c://1.txt"); engine.put("f", file); try { engine.eval("println('path:'+f.getPath())");//無法使用alert方法 } catch (ScriptException e) { e.printStackTrace(); } } [java] view plain copy/* * 演示如何在java中如何通過線程來啟動一個js方法 */ public void testScriptInterface() throws ScriptException { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine=sem.getEngineByName("js"); String script="var obj=new Object();obj.run=function(){println('test thread')}"; engine.eval(script); Object obj=engine.get("obj");//獲取js中對象 Invocable inv=(Invocable)engine; Runnable r=inv.getInterface(obj,Runnable.class); Thread t=new Thread(r); t.start(); }



[java] view plain copy/* * 加載腳本引擎,并在java中調用js方法 */ public void test2() { ScriptEngineManager manager = new ScriptEngineManager(); ScriptEngine engine = manager.getEngineByName("javascript"); try { String str="2&1"; Double d = (Double) engine.eval(str); Integer i=d.intValue(); System.out.println(i); } catch (ScriptException ex) { ex.printStackTrace(); } } [java] view plain copy/* * 在java中調用js,jdk1.6中有加載js引擎類,然后由它來調用js方法。 * 并通過JDK平臺給script的方法中的形參賦值 */ public void test(String name) { ScriptEngineManager sem = new ScriptEngineManager(); /* *sem.getEngineByExtension(String extension)參數為js sem.getEngineByMimeType(String mimeType) 參數為application/javascript 或者text/javascript sem.getEngineByName(String shortName)參數為js或javascript或JavaScript */ ScriptEngine se = sem.getEngineByName("js"); try { String script = "function say(){ return 'hello,'"+name+"; }"; se.eval(script); Invocable inv2 = (Invocable) se; String res=(String)inv2.invokeFunction("say",name); System.out.println(res); } catch(Exception e) { e.printStackTrace(); } } [java] view plain copy/* * 演示如何將java中對象作為js中全局變量,同時演示將file類賦給腳本語言,并獲得其屬性。 */ public void testScriptVariables() { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine=sem.getEngineByName("js"); File file=new File("c://1.txt"); engine.put("f", file); try { engine.eval("println('path:'+f.getPath())");//無法使用alert方法 } catch (ScriptException e) { e.printStackTrace(); } } [java] view plain copy/* * 演示如何在java中如何通過線程來啟動一個js方法 */ public void testScriptInterface() throws ScriptException { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine=sem.getEngineByName("js"); String script="var obj=new Object();obj.run=function(){println('test thread')}"; engine.eval(script); Object obj=engine.get("obj");//獲取js中對象 Invocable inv=(Invocable)engine; Runnable r=inv.getInterface(obj,Runnable.class); Thread t=new Thread(r); t.start(); }
[java] view plain copy/* * 加載腳本引擎,并在java中調用js方法 */ public void test2() { ScriptEngineManager manager = new ScriptEngineManager(); ScriptEngine engine = manager.getEngineByName("javascript"); try { String str="2&1"; Double d = (Double) engine.eval(str); Integer i=d.intValue(); System.out.println(i); } catch (ScriptException ex) { ex.printStackTrace(); } } [java] view plain copy/* * 在java中調用js,jdk1.6中有加載js引擎類,然后由它來調用js方法。 * 并通過JDK平臺給script的方法中的形參賦值 */ public void test(String name) { ScriptEngineManager sem = new ScriptEngineManager(); /* *sem.getEngineByExtension(String extension)參數為js sem.getEngineByMimeType(String mimeType) 參數為application/javascript 或者text/javascript sem.getEngineByName(String shortName)參數為js或javascript或JavaScript */ ScriptEngine se = sem.getEngineByName("js"); try { String script = "function say(){ return 'hello,'"+name+"; }"; se.eval(script); Invocable inv2 = (Invocable) se; String res=(String)inv2.invokeFunction("say",name); System.out.println(res); } catch(Exception e) { e.printStackTrace(); } } [java] view plain copy/* * 演示如何將java中對象作為js中全局變量,同時演示將file類賦給腳本語言,并獲得其屬性。 */ public void testScriptVariables() { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine=sem.getEngineByName("js"); File file=new File("c://1.txt"); engine.put("f", file); try { engine.eval("println('path:'+f.getPath())");//無法使用alert方法 } catch (ScriptException e) { e.printStackTrace(); } } [java] view plain copy/* * 演示如何在java中如何通過線程來啟動一個js方法 */ public void testScriptInterface() throws ScriptException { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine=sem.getEngineByName("js"); String script="var obj=new Object();obj.run=function(){println('test thread')}"; engine.eval(script); Object obj=engine.get("obj");//獲取js中對象 Invocable inv=(Invocable)engine; Runnable r=inv.getInterface(obj,Runnable.class); Thread t=new Thread(r); t.start(); }
[java] view plain copy/* * 加載腳本引擎,并在java中調用js方法 */ public void test2() { ScriptEngineManager manager = new ScriptEngineManager(); ScriptEngine engine = manager.getEngineByName("javascript"); try { String str="2&1"; Double d = (Double) engine.eval(str); Integer i=d.intValue(); System.out.println(i); } catch (ScriptException ex) { ex.printStackTrace(); } } [java] view plain copy/* * 在java中調用js,jdk1.6中有加載js引擎類,然后由它來調用js方法。 * 并通過JDK平臺給script的方法中的形參賦值 */ public void test(String name) { ScriptEngineManager sem = new ScriptEngineManager(); /* *sem.getEngineByExtension(String extension)參數為js sem.getEngineByMimeType(String mimeType) 參數為application/javascript 或者text/javascript sem.getEngineByName(String shortName)參數為js或javascript或JavaScript */ ScriptEngine se = sem.getEngineByName("js"); try { String script = "function say(){ return 'hello,'"+name+"; }"; se.eval(script); Invocable inv2 = (Invocable) se; String res=(String)inv2.invokeFunction("say",name); System.out.println(res); } catch(Exception e) { e.printStackTrace(); } } [java] view plain copy/* * 演示如何將java中對象作為js中全局變量,同時演示將file類賦給腳本語言,并獲得其屬性。 */ public void testScriptVariables() { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine=sem.getEngineByName("js"); File file=new File("c://1.txt"); engine.put("f", file); try { engine.eval("println('path:'+f.getPath())");//無法使用alert方法 } catch (ScriptException e) { e.printStackTrace(); } } [java] view plain copy/* * 演示如何在java中如何通過線程來啟動一個js方法 */ public void testScriptInterface() throws ScriptException { ScriptEngineManager sem=new ScriptEngineManager(); ScriptEngine engine=sem.getEngineByName("js"); String script="var obj=new Object();obj.run=function(){println('test thread')}"; engine.eval(script); Object obj=engine.get("obj");//獲取js中對象 Invocable inv=(Invocable)engine; Runnable r=inv.getInterface(obj,Runnable.class); Thread t=new Thread(r); t.start(); }

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