package com.LBH;

import javax.script.ScriptEngine;

import javax.script.ScriptEngineManager;

import javax.script.ScriptException;

import com.singularsys.jep.Jep;

import com.singularsys.jep.bigdecimal.BigDecComponents;

public class JieXi {

    public static boolean getExpressionValue(String expression) {

        Jep jep = new Jep(new BigDecComponents());

        jep.addStandardConstants();

        Object result = null;

        try {

            jep.parse(expression);

            result = jep.evaluate();

        } catch (Exception e) {

            e.printStackTrace();

        }

        return (Boolean) result;

    }

    public static Object getMathValue(String str) throws ScriptException{

        ScriptEngineManager manager = new ScriptEngineManager();

        ScriptEngine engine = manager.getEngineByName("js");

        engine.put("a", true);

        engine.put("b", false);

        engine.put("c", true);

        Object result = engine.eval(str);

        return result;

    }

    public static void main(String[] args) throws Exception {

        String str = "(a||b)&&c";

        System.out.println(str);

        Object result = getMathValue(str);

        System.out.println("关系运算符计算结果，类型:" + result.getClass().getName()

                + ",结果:" + result);

        System.out.println("******************\n数学运算符"

                + getExpressionValue("(1+3)&&(0+10)"));

    }

}