Java根据属性获取对象

Java 根据枚举属性获取对象

通过Map方式 values方式

package com.example.datastream.enums;

import com.google.common.collect.Lists;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.Getter;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;

// lombok jar包
@Getter
public enum BusinessLine {
    /**
     * 运营管理，负责业绩，库存，收出房
     * */
    K1(1, "K1", "0001","001a"),

    /**
     * 营销运营，负责客源商机转换
     * */
    K2(2, "K2", "002","002a"),

    /**
     * 家装
     * */
    K3(3, "K3", "003","003a"),

    /**
     * 服务品质
     * */
    K4(4, "K4", "004","004a"),

    /**
     * 绩效，人力
     * */
    K5(5, "K5", "005","005a"),

    /**
     * 品质监察
     * */
    KQ(6, "KQ", "006","006a"),


    OTHER(0, "其他", "000","000a");


    private int index;

    private String name;

    private String pdManager;

    private String dbManager;

    // ---------------------------------------------------
    /**
    * 键值对方式
    */
    private final static Map<String, BusinessLine> businessLines = Stream.of(values()).collect(Collectors.toMap(item -> item.getName(), Function.identity()));
    
    public static BusinessLine getInstance(String name) {
        return businessLines.get(name);
    }
    
    // --------------------------------------------------

    BusinessLine(int index, String name, String pdManager,String dbManager) {
        this.index = index;
        this.name = name;
        this.pdManager = pdManager;
        this.dbManager = dbManager;
    }

    /**
    * values方式
    */
    public static BusinessLine getInstance(int index) {
        return Stream.of(values()).filter(item -> item.index == index).findAny().orElse(null);
    }

    /**
    * 枚举对象转list，获取枚举值列表
    */
    public static List<Map<String, String>> toList() {
        List<Map<String, String>> list = Lists.newArrayList();
        for (BusinessLine item : BusinessLine.values()) {
            Map<String, String> map = new HashMap<String, String>();
            map.put("code", String.valueOf(item.getIndex()));
            map.put("name", item.getName());
            list.add(map);
        }
        return list;
    }
}