lodsve.web.mvc.json.CodeableEnumSerializer Maven / Gradle / Ivy

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/*
 * Copyright (C) 2018  Sun.Hao
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */

package lodsve.web.mvc.json;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import lodsve.core.bean.Codeable;
import lodsve.web.mvc.config.WebMvcConfiguration;

import java.io.IOException;

/**
 * Jackson序列化枚举时，将枚举变成{value: '', name: ''}.

 * {@link WebMvcConfiguration#objectMapper()}
 *
 * @author sunhao([email protected])
 * @date 15/6/24 下午9:31
 */
public class CodeableEnumSerializer extends JsonSerializer {
    @Override
    public void serialize(Enum value, JsonGenerator jsonGenerator, SerializerProvider provider) throws IOException {
        if (!(value instanceof Codeable)) {
            jsonGenerator.writeNumber(value.ordinal());
            return;
        }

        Codeable codeable = (Codeable) value;

        jsonGenerator.writeStartObject();
        jsonGenerator.writeStringField("code", codeable.getCode());
        jsonGenerator.writeStringField("title", codeable.getTitle());
        jsonGenerator.writeEndObject();
    }
}