Java 里調(diào)用 JavaScript 功能

1. 把字符串讀成計算式

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
 
public class Main {
    public static void main(String[] args) throws ScriptException {
        ScriptEngine se = new ScriptEngineManager().getEngineByName("js");
        System.out.println(se.eval("12*3+52-32/4+2"));
    }