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package test;

import org.springframework.expression.Expression;

import org.springframework.expression.spel.standard.SpelExpressionParser;

public class Interpreter {

public static void main(String[] args) {

// TODO Auto-generated method stub

//创建一个 Parser 对象

SpelExpressionParser parser = new SpelExpressionParser();

//

//通过 Parser 对象 获取到一个Expression对象

//会根据不同的 Parser 对象 ，返回不同的 Expression对象

Expression expression = parser.parseExpression("10 * (2 + 1) * 1 + 66"); //96

int result = (Integer) expression.getValue();

System.out.println(result);

}

}