[add] 优化特殊字段保留两位小数

signal-optimize-service/src/main/java/net/wanji/opt/config/Double2TwoDecimalPlacesSerializer.java

@@ -5,6 +5,7 @@ import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
 
 import java.io.IOException;
+import java.math.BigDecimal;
 import java.text.DecimalFormat;
 
 /**
@@ -17,7 +18,9 @@ public class Double2TwoDecimalPlacesSerializer extends JsonSerializer<Double> {
     @Override
     public void serialize(Double value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
         if (value != null) {
-            String formattedValue = df.format(value);
+            // 将 Double 转换为 BigDecimal，避免浮点数精度问题
+            BigDecimal bd = BigDecimal.valueOf(value).setScale(2, BigDecimal.ROUND_HALF_UP);
+            String formattedValue = df.format(bd.doubleValue());
             gen.writeString(formattedValue);
         } else {
             gen.writeNull();

wj-databus/src/main/java/net/wanji/databus/config/DoubleToTwoDecimalPlacesSerializer.java

@@ -3,8 +3,10 @@ package net.wanji.databus.config;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
+import net.wanji.common.utils.tool.JacksonUtils;
 
 import java.io.IOException;
+import java.math.BigDecimal;
 import java.text.DecimalFormat;
 
 /**
@@ -17,7 +19,9 @@ public class DoubleToTwoDecimalPlacesSerializer extends JsonSerializer<Double> {
     @Override
     public void serialize(Double value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
         if (value != null) {
-            String formattedValue = df.format(value);
+            // 将 Double 转换为 BigDecimal，避免浮点数精度问题
+            BigDecimal bd = BigDecimal.valueOf(value).setScale(2, BigDecimal.ROUND_HALF_UP);
+            String formattedValue = df.format(bd.doubleValue());
             gen.writeString(formattedValue);
         } else {
             gen.writeNull();