java [mvel for java] java中利用mvel实现公式计算#java #mvel

Posted 2021-05-07

/**
 * mvel 实体类
 */
import lombok.Builder;
import lombok.Data;

@Data
@Builder
public class MvelBean {
    private Long premium;
    private Long rate;
}

/**
 * 根据公式计算结果
 *
 * @param mvelBean
 * @param formula
 * @return
 */
public Long mvelCal(MvelBean mvelBean, String formula) {
  Map<String, Object> paramMap = new HashMap<>();
  paramMap.put("mvelBean", mvelBean);
  /** 匹配表达式 */
  formula = (String) TemplateRuntime.eval(formula, paramMap);
  return (Long) MVEL.eval(formula, paramMap);
}

/**
 * 公式实例
 */