java里面引用js脚本

package com.sise.lab01.动态化脚本案例;
import javax.script.*;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Scanner;
/**
 * java读取js脚本
 * @author hao_lin
 * @data 2018/8/16 9:07
 */
public class JavaReadJavaScript {
    public static void main(String[] args) throws FileNotFoundException, ScriptException, NoSuchMethodException {
        ScriptEngine engine=new ScriptEngineManager().getEngineByName("javascript");
        //建立上下文
        Bindings bind=engine.createBindings();
        bind.put("factor",1);
        System.out.println("请输入初始化参数：");
        Scanner input=new Scanner(System.in);
        String item=input.nextLine();
        while(item!="exit"){
            Object eval = engine.eval(new FileReader("D:\\code\\book1\\src\\main\\resources\\lab.js"));
            if(engine instanceof Invocable){
                System.out.println("输入参数："+item);
                Invocable in= (Invocable) engine;
                String result= (String) in.invokeFunction("printWord",item);
                System.out.println("运算结果："+result.toString());
            }
            System.out.println("请再次输入参数：");
            item=input.nextLine();
        }
    }
}
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function printWord(item) {
    if(item=='test1'){
        item+="test1";
        return item;
    }
    item=item+"check";
    return item;
}
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