[Java知识库]Java中动态执行数学表达式

/**
 * ClassName: JavaScriptTest
 * Author:
 * Description:TODO
 * Date:2022-05-22 22:26
 * Version: V1.0
 **/
//测试
import java.util.ArrayList;
import java.util.List;

public class JavaScriptTest {

    /**
     * @param args
     */
    public static void main(String[] args) {
        String gs= "(B+D-(A-C)*A)/F";
        List<MapJ> all = new ArrayList<MapJ>();
        all.add(new MapJ("A","2"));
        all.add(new MapJ("B","3"));
        all.add(new MapJ("C","4"));
        all.add(new MapJ("D","5"));
        all.add(new MapJ("F","24"));
        JavaScript js = new JavaScript();
        Double d = js.getMathValue(all, gs);
        if(d==null){
            System.out.println(" 无法计算这个表达式 ");
        }else{
            System.out.println(d*100+"%");
        }

        gs= "1*6+Math.sqrt(4)+Math.pow(2,3)";
        System.out.println(gs+ "= "+js.getMathValue(gs));
    }

}