Java执行js脚本
http://my.oschina.net/sniperLi/blog/530338
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Java代码 package cn.sniper.spider.utils; import java.io.BufferedReader; import java.io.FileInputStream; import java.io.InputStream; import java.io.InputStreamReader; import java.io.StringReader; import java.net.URL; import javax.script.Invocable; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import org.junit.Test; public class Java4JsUtil { @Test public void testJs1() throws Exception { ScriptEngineManager scriptEngineManager = new ScriptEngineManager(); ScriptEngine engine = scriptEngineManager.getEngineByExtension("js"); StringReader reader = new StringReader("function getNum(num){return num}"); engine.eval(reader); Invocable invocable = (Invocable)engine; Object result = invocable.invokeFunction("getNum", "2"); System.out.println(result); } @Test public void testJs2() throws Exception { ScriptEngineManager scriptEngineManager = new ScriptEngineManager(); ScriptEngine engine = scriptEngineManager.getEngineByExtension("js"); BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream("D:\\test.js"))); engine.eval(reader); Invocable invocable = (Invocable)engine; Object result = invocable.invokeFunction("getNum", "2"); System.out.println(result); } @Test public void testOnlineJs() throws Exception { ScriptEngineManager scriptEngineManager = new ScriptEngineManager(); ScriptEngine engine = scriptEngineManager.getEngineByExtension("js"); URL url2 = new URL("http://10.161.56.231:8888/tjfxpt/resources/js/common/common.js"); InputStream inputStream = url2.openStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); System.out.println(reader.readLine()); engine.eval(reader); Invocable invocable = (Invocable)engine; Object result = invocable.invokeFunction("fmoney", new Integer[]{10, 2}); System.out.println(result); } } |
