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/*
* Copyright 2021-2024 spring-boot-extension the original author or authors.
*
* Licensed 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
*
* https://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 an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.livk.commons.jackson.support;
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.ser.ContextualSerializer;
import lombok.AllArgsConstructor;
import lombok.NoArgsConstructor;
import java.io.IOException;
import java.text.DecimalFormat;
import java.util.Optional;
import java.util.Set;
/**
* NumberJsonFormat序列化处理
*
* @author livk
* @see NumberJsonFormat
*/
@AllArgsConstructor
@NoArgsConstructor
class NumberJsonSerializer extends JsonSerializer implements ContextualSerializer {
private static final Set> SUPPORT_PRIMITIVE_CLASS = Set.of(byte.class, short.class, int.class, long.class,
float.class, double.class);
private String format;
@Override
public void serialize(Number value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
gen.writeString(new DecimalFormat(format).format(value));
}
@Override
public JsonSerializer createContextual(SerializerProvider prov, BeanProperty property)
throws JsonMappingException {
Class rawClass = property.getType().getRawClass();
NumberJsonFormat jsonFormat = Optional.ofNullable(property.getAnnotation((NumberJsonFormat.class)))
.orElse(property.getContextAnnotation(NumberJsonFormat.class));
if (Number.class.isAssignableFrom(rawClass) || this.simpleTypeSupport(rawClass)) {
return new NumberJsonSerializer(jsonFormat.pattern());
}
return prov.findValueSerializer(property.getType(), property);
}
private boolean simpleTypeSupport(Class rawClass) {
return rawClass.isPrimitive() && SUPPORT_PRIMITIVE_CLASS.contains(rawClass);
}
}