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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.mvel;

import cn.hutool.extra.expression.ExpressionEngine;
import org.mvel2.MVEL;

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

/**
 * MVEL (MVFLEX Expression Language)引擎封装

 * 见：https://github.com/mvel/mvel
 *
 * @since 5.5.0
 * @author looly
 */
public class MvelEngine implements ExpressionEngine {

	static {
		checkEngineExist(MVEL.class);
	}

	/**
	 * 构造
	 */
	public MvelEngine(){
	}

	@Override
	public Object eval(String expression, Map context, Collection> allowClassSet) {
		return MVEL.eval(expression, context);
	}

	private static void checkEngineExist(Class clazz){
		// do nothing
	}
}