Java 枚举 结合switch的用法

package com.b2b.common.constant;

import com.base.utils.base.StringUtils;

/**
 * 系统类型枚举
 * @author shijing
 */
public enum SystemType {

    ERP(0,"ERP"),
    ORDER_PLATFORM(1,"订货平台"),
    PERSONAL(2,"个人中心系统"),
    SHOP_MALL(3,"商城"),
    PARTNER(4,"伙伴系统");

    private int value;
    private String desc;

    SystemType(int value ,String desc) {
        this.value = value;
        this.desc = desc;
    }

    public int getValue() {
        return value;
    }

    public String getDesc() {
        return desc;
    }

    /**
     * 通过value取枚举
     * @param value
     * @return
     */
    public static SystemType getTypeByValue(String value){
        if (StringUtils.isNull(value)){
            return null;
        }
        int valueKey = Integer.parseInt(value);
        for (SystemType enums : SystemType.values()) {
            if (enums.getValue() == valueKey) {
                return enums;
            }
        }
        return null;
    }

    /**
     * 通过value取描述
     * @param value
     * @return
     */
    public static String getDescByValue(int value) {
        for (SystemType enums : SystemType.values()) {
            if (enums.getValue() == value) {
                return enums.getDesc();
            }
        }
        return "";
    }

}

/**
     * 区分不同系统类型，登录不同系统
     * @author shijing
     * @param paramMap
     * @param checkData
     * @return
     * @throws Exception
     */
    private ErpResponse getLoginResponse(Map<String, Object> paramMap, ErpResponse checkData) throws Exception {
        ErpResponse loginData = new ErpResponse();
        Map<String,Object> user= (Map<String, Object>) checkData.getData();
        //获取user的系统类型，然后区分是哪个系统实例用户登录
        String sysBaseType = (String) user.get("sys_base_type");
        SystemType systemType = SystemType.getTypeByValue(sysBaseType);
        switch(systemType){
            case ERP:
                erpLogin((String) user.get("user_id"));
                loginData.setData(user);
                break;
            case ORDER_PLATFORM:
                //订货平台
                orderPlatformLoginByCheck(paramMap);
                loginData.setData(user);
                break;
            case PERSONAL:
                //个人中心
                loginData = personalLogin(user);
                break;
            default:
                LOGGER.info("系统类型不满足");
                break;
        }
        return  loginData;
    }