/*
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* Copyright (c) 2018-2028, DreamLu All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the dreamlu.net developer nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* Author: DreamLu 卢春梦 (596392912@qq.com)
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*/
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package org.springblade.core.tool.jackson;
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import com.fasterxml.jackson.databind.module.SimpleModule;
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import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
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import java.math.BigDecimal;
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import java.math.BigInteger;
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/**
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* 大整数序列化为 String 字符串,避免浏览器丢失精度
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*
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* <p>
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* 前端建议采用:
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* bignumber 库: https://github.com/MikeMcl/bignumber.js
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* decimal.js 库: https://github.com/MikeMcl/decimal.js
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* </p>
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*
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* @author L.cm
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*/
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public class BladeNumberModule extends SimpleModule {
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public static final BladeNumberModule INSTANCE = new BladeNumberModule();
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public BladeNumberModule() {
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super(BladeNumberModule.class.getName());
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// Long 和 BigInteger 采用定制的逻辑序列化,避免超过js的精度
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this.addSerializer(Long.class, BigNumberSerializer.instance);
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this.addSerializer(Long.TYPE, BigNumberSerializer.instance);
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this.addSerializer(BigInteger.class, BigNumberSerializer.instance);
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// BigDecimal 采用 toString 避免精度丢失,前端采用 decimal.js 来计算。
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this.addSerializer(BigDecimal.class, ToStringSerializer.instance);
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}
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}
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