jackson 枚举 enum json 解析类型 返回数字 或者自定义文字 How To Serialize Enums as JSON Objects with Jackson

1、枚举类如下

　　

package com.irobotzz.docs.bms.constants;

import com.baomidou.mybatisplus.annotation.EnumValue;
import com.common.auth.constants.IBaseEnum;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonValue;
import lombok.Getter;

/**
 * 用户启用状态
 *
 * @author Yungui.zheng
 * @date 2020/05/11
 */
@Getter
@JsonFormat(shape = JsonFormat.Shape.OBJECT)
public enum StatusEnum implements IBaseEnum<Integer> {

    /**
     * 用户启用状态常量
     */
    DISABLED(0, "停用"),
    ENABLED(1, "启用"),
    UNKNOWN(-1,"未知");

    @EnumValue
    private final Integer value;
    private final String desc;

    StatusEnum(Integer value, String desc) {
        this.value = value;
        this.desc = desc;
    }

}

　　这种写法返回到前端时一个对象：{value:1,desc:"启用"}

 

2、希望返回数字value，使用注解  @JsonValue

package com.irobotzz.docs.bms.constants;

import com.baomidou.mybatisplus.annotation.EnumValue;
import com.common.auth.constants.IBaseEnum;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonValue;
import lombok.Getter;

/**
 * 用户启用状态
 *
 * @author Yungui.zheng
 * @date 2020/05/11
 */
@Getter
@JsonFormat(shape = JsonFormat.Shape.OBJECT)
public enum StatusEnum implements IBaseEnum<Integer> {

    /**
     * 用户启用状态常量
     */
    DISABLED(0, "停用"),
    ENABLED(1, "启用"),
    UNKNOWN(-1,"未知");

    @EnumValue
    @JsonValue
    private final Integer value;
    private final String desc;

    StatusEnum(Integer value, String desc) {
        this.value = value;
        this.desc = desc;
    }

}

　　这个时候返回值为：1