枚举工具类，通过Code返回枚举

定义接口。用于反射范式编程

public interface CodeEnum {
    Integer getCode();
}

定义业务枚举，并实现CodeEnum接口

/** 婚姻状况 枚举*/
public enum MaritalStatusEnum implements CodeEnum{
    
    SPINSTERHOOD(1, "未婚"), 
    MARRIED_NO_CHILD(2,"已婚无子女"),
    MARRIED_HAS_CHILD(3,"已婚有子女"),
    DIVORCE(4,"离异");
    

    private Integer code;
    private String message;

    public Integer getCode() {
        return code;
    }

    public String getMessage() {
        return message;
    }

    MaritalStatusEnum(Integer code, String message) {
        this.code = code;
        this.message = message;
    }
}

定义枚举工具类

/** 枚举工具类 */
public class EnumUtil {

    /** 通过code获取枚举*/
    public static <T extends CodeEnum> T getEnumByCode(Integer code, Class<T> enumClass) {
        for (T each : enumClass.getEnumConstants()) {
            if(code.equals(each.getCode())){
                return  each;
            }
        }
        return null;
    }
}

使用范例:

EnumUtil.getEnumByCode(1, MaritalStatusEnum.class).getMessage();