Java8 新JavaScript脚本引擎Nashorn小试

一个对Nashorn脚本引擎很详细地介绍: http://winterbe.com/posts/2014/04/05/java8-nashorn-tutorial/

下面是我测试的小例子，模拟在游戏中伤害计算脚本化：

ScriptTest.java:

package com.zl1030.ScriptTest;

import java.io.FileReader;

import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;

public class ScriptTest {

public static void main(String[] args) {
try {
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("nashorn");

String scriptPath = System.getProperty("user.dir") + "/Scripts/Test1.js";

engine.eval(new FileReader(scriptPath));
Invocable invocable = (Invocable) engine;
Test1 test1 = invocable.getInterface(Test1.class);

ScriptResult result = (ScriptResult) test1.calc(new A(), new A());
System.out.println(test1.getLength("abcdefg"));
System.out.println(result.getDamage() + " " + result.getTarget().getA() + " " + result.isResult());

} catch (Exception e) {
e.printStackTrace();
}
}
}

Test1.java:

package com.zl1030.ScriptTest;

public interface Test1 {
public int getLength(String msg);

public ScriptResult calc(A a, A b);

}

ScriptResult.java:

package com.zl1030.ScriptTest;

public class ScriptResult {
private A target;
private boolean result;
private int damage;

public A getTarget() {
return target;
}

public void setTarget(A target) {
this.target = target;
}

public boolean isResult() {
return result;
}

public void setResult(boolean result) {
this.result = result;
}

public int getDamage() {
return damage;
}

public void setDamage(int damage) {
this.damage = damage;
}
}

A.java:

package com.zl1030.ScriptTest;

public class A {
private int a = 0;
private int b = 0;

public int getA() {
return a;
}

public void setA(int a) {
this.a = a;
}

public int getB() {
return b;
}

public void setB(int b) {
this.b = b;
}
}

Test1.js:

var ScriptResultClass=Java.type('com.zl1030.ScriptTest.ScriptResult');

function getLength(msg) {
return msg.length;
}

function calc(a, b) {
a.setA(1);
a.setB(2);
var result = new ScriptResultClass();
result.setTarget(a);
result.setDamage(10);
result.setResult(true);

return result;
}

本文出自 “zl1030的记录” 博客，请务必保留此出处http://zl1030.blog.51cto.com/274507/1660007