
com.github.joekerouac.common.tools.codec.json.databind.LocalDateTimeSerializer Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE
* file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file
* to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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* specific language governing permissions and limitations under the License.
*/
package com.github.joekerouac.common.tools.codec.json.databind;
import java.io.IOException;
import java.time.LocalDateTime;
import java.util.Optional;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.ContextualSerializer;
import com.github.joekerouac.common.tools.codec.json.annotations.LocalDateTimeFormat;
import com.github.joekerouac.common.tools.date.DateUtil;
import com.github.joekerouac.common.tools.string.StringUtils;
/**
* 用于处理LocalDateTime
*
* @author JoeKerouac
* @date 2022-10-14 14:37:00
* @since 1.0.0
*/
public class LocalDateTimeSerializer extends JsonSerializer
implements SerializeRegister, ContextualSerializer {
private final String format;
public LocalDateTimeSerializer() {
this(DateUtil.BASE);
}
public LocalDateTimeSerializer(String format) {
this.format = format;
}
@Override
public void serialize(final LocalDateTime value, final JsonGenerator gen, final SerializerProvider serializers)
throws IOException {
gen.writeString(DateUtil.getFormatDate(value, format));
}
@Override
public void register(final SimpleModule module) {
module.addSerializer(LocalDateTime.class, this);
}
@Override
public JsonSerializer> createContextual(SerializerProvider serializerProvider, BeanProperty beanProperty)
throws JsonMappingException {
LocalDateTimeFormat annotation =
Optional.ofNullable(beanProperty).map(p -> p.getAnnotation(LocalDateTimeFormat.class)).orElse(null);
if (annotation == null) {
return this;
}
return new LocalDateTimeSerializer(
StringUtils.getOrDefault(annotation.serializer(), StringUtils.getOrDefault(annotation.value(), format)));
}
}
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