javaz中枚举类的使用方法

枚举类

package com.demonstration.entity;

import java.util.List;
import java.util.Map;

public enum ReviewStatus {
        //以下是枚举类的对象
    FINISH("复审通过",0),
    REVIEW_NOT("复审未通过",1),
    TRIAL("待初审",2),
    REVIEW("待复审",3),
    MODII("退回修改",4);

    public static void resetKey(List<Map<String, Object>> maps) {
        //此方法中无需写内容
    }

    public static ReviewStatus getByName(String name) {
        for (ReviewStatus reviewStatus : ReviewStatus.values()) {
            if (reviewStatus.name().equals(name)) {
                return reviewStatus;
            }
        }
        return null;
    }

    public static ReviewStatus getByNum(Integer num) {
        for (ReviewStatus reviewStatus : ReviewStatus.values()) {
            if (reviewStatus.getNum()==num) {
                return reviewStatus;
            }
        }
        return null;
    }

    public String firstBigLetter() {
        return this.name().substring(0, 1);
    }

    private String desc;

    private int num;

    private ReviewStatus(String desc,int num) {
        this.desc = desc;
        this.num = num;
    }
    private ReviewStatus(String desc) {
        this.desc = desc;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }

    public int getNum() {
        return num;
    }

    public void setNum(int num) {
        this.num = num;
    }

}

将其内容放到页面上

modelMap.put("reviewStatus",ReviewStatus .values());
//values()方法获得所有的枚举对象，返回的是一个数组
//valueOf(String name)方法传入的name要是枚举类对象的名字，获得是一个相应的枚举对象

页面显示

<select>
<#list  reviewStatus as data>
<option value="${(data.getNum())!}">${(data.getDesc())!}</option>
</#list>
</select>