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## 使用BigDecimalFormat注解，默认不用四舍五入改为去尾；

This commit is contained in:
cabbage 2025-06-13 13:59:48 +08:00
parent dc70bc6db7
commit e064d87223
1 changed files with 9 additions and 25 deletions
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34
bd-common/bd-common-core/src/main/java/com/hzs/common/core/config/BigDecimalSerializer.java
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@ -1,6 +1,5 @@
package com.hzs.common.core.config; package com.hzs.common.core.config;
import cn.hutool.json.JSONUtil;
import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.BeanProperty; import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.JsonMappingException; import com.fasterxml.jackson.databind.JsonMappingException;
@ -8,14 +7,11 @@ import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider; import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.ContextualSerializer; import com.fasterxml.jackson.databind.ser.ContextualSerializer;
import com.hzs.common.core.annotation.BigDecimalFormat; import com.hzs.common.core.annotation.BigDecimalFormat;
import com.hzs.common.core.constant.CacheConstants;
import com.hzs.common.core.context.SecurityContextHolder;
import com.hzs.common.core.service.RedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.jackson.JsonComponent; import org.springframework.boot.jackson.JsonComponent;
import java.io.IOException; import java.io.IOException;
import java.math.BigDecimal; import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.DecimalFormat; import java.text.DecimalFormat;
import java.util.Objects; import java.util.Objects;
@ -28,15 +24,6 @@ public class BigDecimalSerializer extends JsonSerializer<BigDecimal> implements
// 默认保留2位小数 // 默认保留2位小数
private String format = "#0.00"; private String format = "#0.00";
private String zeroFormat = "#0";
private RedisService redisService;
@Autowired
public void setRedisService(RedisService redisService) {
this.redisService = redisService;
}
/** /**
* 序列化处理方式 * 序列化处理方式
* *
@ -47,12 +34,10 @@ public class BigDecimalSerializer extends JsonSerializer<BigDecimal> implements
*/ */
@Override @Override
public void serialize(BigDecimal bigDecimal, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException { public void serialize(BigDecimal bigDecimal, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
// if(ComputeUtil.compareEqual(ComputeUtil.computeSubtract(bigDecimal, bigDecimal.setScale(0, RoundingMode.DOWN)), BigDecimal.ZERO)){ DecimalFormat decimalFormat = new DecimalFormat(format);
// jsonGenerator.writeString(new DecimalFormat(zeroFormat).format(bigDecimal)); // 改为使用去尾方式显示
// }else{ decimalFormat.setRoundingMode(RoundingMode.DOWN);
// jsonGenerator.writeString(bigDecimal.setScale(6, RoundingMode.HALF_UP).stripTrailingZeros().toString()); jsonGenerator.writeString(decimalFormat.format(bigDecimal));
jsonGenerator.writeString(new DecimalFormat(format).format(bigDecimal));
// }
} }
/** /**
@ -66,15 +51,13 @@ public class BigDecimalSerializer extends JsonSerializer<BigDecimal> implements
@Override @Override
public JsonSerializer<?> createContextual(SerializerProvider serializerProvider, BeanProperty beanProperty) throws JsonMappingException { public JsonSerializer<?> createContextual(SerializerProvider serializerProvider, BeanProperty beanProperty) throws JsonMappingException {
if (beanProperty != null) { if (beanProperty != null) {
Object bdCountry = redisService.getCacheObject(CacheConstants.BD_COUNTRY + SecurityContextHolder.getUserCountry());
if (Objects.equals(beanProperty.getType().getRawClass(), BigDecimal.class)) { if (Objects.equals(beanProperty.getType().getRawClass(), BigDecimal.class)) {
BigDecimalFormat bigDecimalFormat = beanProperty.getAnnotation((BigDecimalFormat.class)); BigDecimalFormat bigDecimalFormat = beanProperty.getAnnotation((BigDecimalFormat.class));
if (bigDecimalFormat == null) { if (bigDecimalFormat == null) {
bigDecimalFormat = beanProperty.getContextAnnotation(BigDecimalFormat.class); bigDecimalFormat = beanProperty.getContextAnnotation(BigDecimalFormat.class);
} }
BigDecimalSerializer bigDecimalSerializer = new BigDecimalSerializer(); BigDecimalSerializer bigDecimalSerializer = new BigDecimalSerializer();
int numberPlaces = Integer.parseInt(JSONUtil.parseObj(bdCountry).get("numberPlaces").toString()); bigDecimalSerializer.format = replaceNumber();
bigDecimalSerializer.format = replaceNumber(numberPlaces);
if (bigDecimalFormat != null) { if (bigDecimalFormat != null) {
bigDecimalSerializer.format = bigDecimalFormat.value(); bigDecimalSerializer.format = bigDecimalFormat.value();
} }
@ -85,11 +68,12 @@ public class BigDecimalSerializer extends JsonSerializer<BigDecimal> implements
return new BigDecimalSerializer(); return new BigDecimalSerializer();
} }
private String replaceNumber(int numberPlaces) { private String replaceNumber() {
StringBuilder number = new StringBuilder("#0."); StringBuilder number = new StringBuilder("#0.");
for (int i = 0; i < numberPlaces; i++) { for (int i = 0; i < 6; i++) {
number.append("0"); number.append("0");
} }
return number.toString(); return number.toString();
} }
} }