自定义SpringBoot的反序列化逻辑

实现自定义的JsonDeserializer反序列化器，通过@JsonDeserialize注解，绑定在对应的类上。那么Controller在序列化和反序列化时都会走自定义的逻辑

注意： 代码中我加上了value.equals(attrType.name())这个判断，这个就是默认的枚举类反序列化逻辑，此处为了兼容上默认的反序列逻辑。

package com.rycem.entity.analysis;

import com.fasterxml.jackson.core.JacksonException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.TreeNode;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.node.TextNode;
import lombok.AllArgsConstructor;
import lombok.Getter;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

/**
 * 筛选条件所属分组
 **/
@JsonDeserialize(using = AttrType.CustomJsonDeserialize.class)
@AllArgsConstructor
@Getter
public enum AttrType {

    EVENT_ATTR("事件属性", Arrays.asList(AttrTypeCode.DYNAMIC_ATTR.getCode(), AttrTypeCode.PRE_COL.getCode()), null),
    USER_ATTR("用户属性", Arrays.asList(AttrTypeCode.DYNAMIC_ATTR.getCode(), AttrTypeCode.PRE_COL.getCode()), null),
    USER_GROUP("用户分群", Arrays.asList(AttrTypeCode.DYNAMIC_ATTR.getCode(), AttrTypeCode.PRE_COL.getCode()), "xx"),
    USER_TAG("用户标签", Arrays.asList(AttrTypeCode.DYNAMIC_ATTR.getCode(), AttrTypeCode.PRE_COL.getCode()), "xx"),
    /* 触发环境就是固定列 */
    TRIGGER_ENV("触发环境", Collections.singletonList(AttrTypeCode.FIXED_COL.getCode()), null);

    private final String attrType;
    private final List<Integer> typeCodes;
    /* 在按xx分组时，colType不为null，直接使用colType进行groupby */
    /* 在按xx分组时，colType为null，展开该类型下的具体属性进行 */
    private final String colType;

    public static class CustomJsonDeserialize extends JsonDeserializer<AttrType> {

        @Override
        public AttrType deserialize(JsonParser jsonParser, DeserializationContext ctxt) throws IOException, JacksonException {
            //解析Json
            TreeNode treeNode = jsonParser.getCodec().readTree(jsonParser);
            String value = ((TextNode) treeNode).asText();
            for (AttrType attrType : AttrType.values()) {

                if (value.equals(attrType.attrType) || value.equals(attrType.name())) {
                    return attrType;
                }

            }
            throw new RuntimeException("无法命中AttrType");
        }
    }
}