java获取枚举类的所有属性

能做什么?:通过取项目某个包路径下的所有枚举类来获取该类的所有属性

直接上java代码:

package com.xxx.common.ennum;


import cn.hutool.core.util.ClassUtil;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Set;

/**
 * @Desc 获取枚举类的所有属性
 * @Author: cxl
 * @Date: 2020/11/18 16:49
 * @Version 1.0
 */
public class EnumUtils {

    private static final String basePackage = "com.xxx.common.ennum";

    public static HashMap<String, List<EnumDto>> getEnums() throws Exception {
        Set<Class<?>> classes = ClassUtil.scanPackage(basePackage);
        HashMap<String, List<EnumDto>> enums = new HashMap<>();
        for (Class<?> aClass : classes) {
            if (ClassUtil.isEnum(aClass)) {
                Class<Enum> em = (Class<Enum>) aClass;
                Method codeMethod = ClassUtil.getDeclaredMethod(aClass, "getCode");
                Method descMethod = ClassUtil.getDeclaredMethod(aClass, "getDesc");
                if (codeMethod == null || descMethod == null) continue;
                //得到enum的所有实例
                Object[] objs = em.getEnumConstants();
                EnumDto dto;
                List<EnumDto> list = new ArrayList<>();
                for (Object obj : objs) {
                    dto = new EnumDto();
                    dto.setCode((String) codeMethod.invoke(obj));
                    dto.setDesc((String) descMethod.invoke(obj));
                    list.add(dto);
                }
                enums.put(aClass.getName().replace(basePackage + ".", "").replace("$","."), list);
            }
        }
        return enums;
    }
}

package com.xxx.common.ennum;

import lombok.Data;

/**
 * @Author: cxl
 * @Date: 2020/11/18 17:57
 * @Version 1.0
 */
@Data
public class EnumDto {

    private String code;

    private String desc;
}

 一个枚举类示例:

package com.xxx.common.ennum;

import com.xxx.modules.market.goods.ennum.MarketEnum;

/**
 * @Author: cxl
 * @Date: 2020/6/3 14:34
 * @Version 1.0
 */
public interface BusCheckEnum {

    enum CheckResult implements BusCheckEnum {
        AGREE("agree", "同意"),
        WAIT("wait","等待审核"),
        REFUSE("refuse", "拒绝");


        private String code;

        private String desc;

        public String getCode() {
            return code;
        }


        public String getDesc() {
            return desc;
        }


        CheckResult(String code, String desc) {
            this.code = code;
            this.desc = desc;
        }

        /**
         * 根据code获取desc
         * @return
         */
        public static String getDescByCode(String code){
            for(CheckResult platformFree:CheckResult.values()){
                if(code.equals(platformFree.getCode())){
                    return platformFree.getDesc();
                }
            }
            return  null;
        }
    }
}

 

 接口调用结果:

{
    "code": 0,
    "msg": "成功",
    "data": {
        "ResourceTypeEnum": [
            {
                "code": "all",
                "desc": "全部"
            },
            {
                "code": "expert",
                "desc": "问答"
            },
            {
                "code": "online",
                "desc": "商城"
            },
            {
                "code": "imgtext",
                "desc": "图文"
            }
        ],
        "WxMsgTagEnum": [
            {
                "code": "newUserReg",
                "desc": "新用户注册"
            },
            {
                "code": "buySuccess",
                "desc": "购买成功"
            }
        ],
        "BusCheckEnum.CheckResult": [
            {
                "code": "agree",
                "desc": "同意"
            },
            {
                "code": "wait",
                "desc": "等待审核"
            },
            {
                "code": "refuse",
                "desc": "拒绝"
            }
        ],
        
    }
}

ClassUtil的来源是hutool工具包,下载地址:https://hutool.cn/docs/#/

在系统登录时调用该接口,获取所有枚举类集合存在本地缓存中,具体要用的时候直接传入类名来取即可

本文地址：https://blog.csdn.net/qq_40757662/article/details/109803954