工厂模式与策略模式结合的最佳实践

工厂模式与策略模式结合的最佳实践

1. 目录结构

（此处省略目录结构图）

2. SubjectType.java 策略枚举类

package com.sunxiansheng.design_pattern.factory_strategy.strategyenum;

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

/**
 * Description: 题目类型，分为单选、多选、判断、简答
 */
public enum SubjectType {
    // 单选题
    SINGLE_CHOICE(1, "单选题"),
    // 多选题
    MULTIPLE_CHOICE(2, "多选题"),
    // 判断题
    JUDGMENT(3, "判断题"),
    // 简答题
    SHORT_ANSWER(4, "简答题");

    private int code;
    private String desc;

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

    public int getCode() {
        return code;
    }

    public String getDesc() {
        return desc;
    }

    // 将枚举转为 map
    public static Map<Integer, SubjectType> enumeratedMaps = Stream.of(SubjectType.values())
            .collect(Collectors.toMap(SubjectType::getCode, Function.identity()));

    
      SubjectType  {
         enumeratedMaps.get(code);
    }
}