調用js：
?1?import?java.io.FileNotFoundException;
?2?import?java.io.FileReader;
?3?import?javax.script.Invocable;
?4?import?javax.script.ScriptEngine;
?5?import?javax.script.ScriptEngineManager;
?6?import?javax.script.ScriptException;
?7?
?8?public?class?JavaScriptEngineTest?{
?9?????public?static?void?main(String[]?args)?{
10?????????try?{
11?????????????JavaScriptEngineTest?test?=?new?JavaScriptEngineTest();
12?????????????test.testAdd(5,?6);
13?????????}?catch?(Exception?se)?{
14?????????????se.printStackTrace();
15?????????}
16?????}
17?
18?????public?String?getPath()?{
19?????????return?this.getClass().getResource("/").getPath();
20?????}
21?
22?
23?????public?void?testAdd(int?a,?int?b)?{
24?????????ScriptEngineManager?sem?=?new?ScriptEngineManager();
25?????????ScriptEngine?jsEngine?=?sem.getEngineByName("js");
26?????????try?{
27?????????????jsEngine.eval(new?FileReader(getPath()?+?"JavaScriptEngineTest.js"));
28?????????}?catch?(FileNotFoundException?e)?{
29?????????????e.printStackTrace();
30?????????}?catch?(ScriptException?e)?{
31?????????????e.printStackTrace();
32?????????}
33?????????Invocable?invocableEngine?=?(Invocable)?jsEngine;
34?????????try?{
35?????????????Object?ret?=?invocableEngine.invokeFunction("add",?a,?b);
36?????????????System.out.println(ret);
37?????????}?catch?(ScriptException?e)?{
38?????????????e.printStackTrace();
39?????????}?catch?(NoSuchMethodException?e)?{
40?????????????e.printStackTrace();
41?????????}
42?????}
43?
44?????
45?}
JavaScriptEngineTest.js，放在同一目錄：
1?function?add(a,b)?{
2???return?a+b;
3?}
輸出：
11.0
posted on 2006-12-26 14:11
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