BigDecimal      0E-8  科学计数法问题

BigDecimal.toString()

BigDecimal.toPlainString()

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

import java.io.IOException;
import java.math.BigDecimal;
import java.util.Objects;

// 自定义 BigDecimal 序列化器
public class BigDecimalSerializer extends JsonSerializer<BigDecimal> {
    @Override
    public void serialize(BigDecimal value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
        if (Objects.nonNull(value)) {
            gen.writeString(value.toPlainString());
        } else {
            gen.writeString("0");
        }
    }
}

需要0就显示0，加一段话哈

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

import java.io.IOException;
import java.math.BigDecimal;
import java.util.Objects;

// 自定义 BigDecimal 序列化器
public class BigDecimalSerializer extends JsonSerializer<BigDecimal> {
    @Override
    public void serialize(BigDecimal value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
        if (Objects.nonNull(value) && value.compareTo(BigDecimal.ZERO) != 0) {
            gen.writeString(value.toPlainString());
        } else {
            gen.writeString("0");
        }
    }
}

反系列化

import cn.hutool.core.util.StrUtil;
import com.fasterxml.jackson.core.JacksonException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;

import java.io.IOException;
import java.math.BigDecimal;

// 自定义 BigDecimal 序列化器
public class BigDecimalDeserializer extends JsonDeserializer<BigDecimal> {

    @Override
    public BigDecimal deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JacksonException {
        String value = p.getValueAsString();
        if (StrUtil.isBlank(value)) {
            return null;
        }
        return new BigDecimal(value);
    }
}