@JsonCreator
    public static SexEnum getByCode(int code) {
        for (SexEnum value : SexEnum.values()) {
            if (Objects.equals(code, value.getCode())) {
                return value;
            }
        }
        return null;
    }

2、使用@JsonValue序列化

在枚举内某个字段的getter方法上添加@JsonValue注解。这样在返回前端数据时，会将枚举类型转为int类型的code的值。

    @JsonValue
    public int getCode() {
        return this.code;
    }

3、完整枚举类

package com.iscas.biz.mp.test.model.enums;

import com.baomidou.mybatisplus.annotation.EnumValue;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonValue;
import com.fasterxml.jackson.annotation.JsonView;
import com.iscas.biz.mp.test.model.TestEntity;
import lombok.Getter;

import java.util.Objects;

/**
 * //TODO
 *
 * @author zhuquanwen
 * @vesion 1.0
 * @date 2020/4/5 15:23
 * @since jdk1.8
 */

public enum  SexEnum /*implements IEnum<Integer>*/ {

    /**
     * 男
     * */
    MAN(1, "男"),

    /**
     * 女
     * */
    WOMEN(2, "女");


    @EnumValue
    private final int code;

    @JsonValue
    public int getCode() {
        return this.code;
    }

    public String getDescription() {
        return description;
    }

    private final String description;
    SexEnum(int val, String description) {
        this.code = val;
        this.description = description;
    }

    @JsonCreator
    public static SexEnum getByCode(int code) {
        for (SexEnum value : SexEnum.values()) {
            if (Objects.equals(code, value.getCode())) {
                return value;
            }
        }
        return null;
    }
/*
    @Override
    public Integer getValue() {
        return code;
    }*/
}

package com.iscas.biz.mp.test.model;

import com.iscas.biz.mp.test.model.enums.SexEnum;
import lombok.Data;

/**
 * //TODO
 *
 * @author zhuquanwen
 * @vesion 1.0
 * @date 2020/4/5 15:22
 * @since jdk1.8
 */
@Data
public class TestEntity {
    private String name;

    private SexEnum sex;
}