526互联

SpringBoot BigDecimal精度丢失

发布时间 2023-08-12 10:34:01作者: 万树飞花
  • jackjson自动丢弃了小数位最末尾的0
private BigDecimal price;
price=12.10;
返回自动转为了12.1

　　

  • 解决方案
  • 1: 返回字段都用字符串
  • 2：BigDecimal序列化自定义处理
package com.lenovo.lps.cost.integrator.config;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import lombok.SneakyThrows;

import java.math.BigDecimal;

public class BigDecimalSerializer extends JsonSerializer<BigDecimal> {

    @SneakyThrows
    @Override
    public void serialize(BigDecimal bigDecimal, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) {
        if (null != bigDecimal) {
            String plainString = bigDecimal.toPlainString();
            jsonGenerator.writeString(plainString);
        }
    }
}

　　

  • 在返回的对象属性上引用序列化类
@JsonSerialize(using = BigDecimalSerializer.class)
private BigDecimal variablePrice;