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Hutool是一个小而全的Java工具类库，通过静态方法封装，降低相关API的学习成本，提高工作效率，使Java拥有函数式语言般的优雅，让Java语言也可以“甜甜的”。

There is a newer version: 5.8.34

package cn.hutool.extra.expression.engine.spel;

import cn.hutool.extra.expression.ExpressionEngine;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;

import java.util.Collection;
import java.util.Map;

/**
 * Spring-Expression引擎封装

 * 见：https://github.com/spring-projects/spring-framework/tree/master/spring-expression
 *
 * @since 5.5.0
 * @author looly
 */
public class SpELEngine implements ExpressionEngine {

	private final ExpressionParser parser;

	/**
	 * 构造
	 */
	public SpELEngine(){
		parser = new SpelExpressionParser();
	}

	@Override
	public Object eval(String expression, Map context, Collection> allowClassSet) {
		final EvaluationContext evaluationContext = new StandardEvaluationContext();
		context.forEach(evaluationContext::setVariable);
		return parser.parseExpression(expression).getValue(evaluationContext);
	}
}