package com.ruoyi.framework.jackson;
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import com.fasterxml.jackson.core.JsonGenerator;
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import com.fasterxml.jackson.databind.SerializerProvider;
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import com.fasterxml.jackson.databind.annotation.JacksonStdImpl;
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import com.fasterxml.jackson.databind.ser.std.NumberSerializer;
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import java.io.IOException;
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/**
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* 超出 JS 最大最小值 处理
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*
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* @author Lion Li
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*/
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@JacksonStdImpl
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public class BigNumberSerializer extends NumberSerializer {
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/**
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* 根据 JS Number.MAX_SAFE_INTEGER 与 Number.MIN_SAFE_INTEGER 得来
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*/
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private static final long MAX_SAFE_INTEGER = 9007199254740991L;
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private static final long MIN_SAFE_INTEGER = -9007199254740991L;
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/**
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* 提供实例
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*/
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public static final BigNumberSerializer INSTANCE = new BigNumberSerializer(Number.class);
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public BigNumberSerializer(Class<? extends Number> rawType) {
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super(rawType);
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}
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@Override
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public void serialize(Number value, JsonGenerator gen, SerializerProvider provider) throws IOException {
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// 超出范围 序列化位字符串
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if (value.longValue() > MIN_SAFE_INTEGER && value.longValue() < MAX_SAFE_INTEGER) {
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super.serialize(value, gen, provider);
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} else {
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gen.writeString(value.toString());
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}
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}
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}
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