package com.dy.pipIrrGlobal.util;

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

import java.io.IOException;
import java.text.DecimalFormat;

/**
 * @author ZhuBaoMin
 * @date 2023/12/6 10:31
 * @LastEditTime 2023/12/6 10:31
 * @Description 小数保留2位返回给前端序列化器
 */
public class Double2Serializer extends JsonSerializer<Double> {
    private DecimalFormat df = new DecimalFormat("0.00");

    @Override
    public void serialize(Double data, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        if (data != null) {
            if (data == 0) {
                jsonGenerator.writeString("0");
            } else {
                jsonGenerator.writeString(df.format(data));
            }
        }
    }

    //public Double2Serializer(){}
    //@Override
    //public void serialize(BigDecimal  data, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
    //    if (data != null) {
    //        BigDecimal number = data.setScale(2, BigDecimal.ROUND_HALF_UP);
    //        jsonGenerator.writeNumber(number);
    //        // gen.writeNumber(df.format(number));    // 转换
    //    } else {
    //        jsonGenerator.writeNumber(data);
    //    }
    //}
}