java 注解方式实现Bigdecimal保留两位小数

1. 新建类   BigDecimalSerializer

import cn.hutool.core.util.ObjectUtil;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import lombok.Data;

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

/**
 * @author xzk
 * @Description Bigdecimal保留小数
 */
@Data
public class BigDecimalSerializer extends JsonSerializer<BigDecimal> {

    @Override
    public void serialize(BigDecimal value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
        if (ObjectUtil.isEmpty(value)) {
            return;
        }

        gen.writeString(value.setScale(4, RoundingMode.HALF_UP).toString());
    }
}

2. 在bean上加注解

3.返回结果