20260416 记录显示金额优化

src/main/java/com/example/demo/config/BigDecimalSerializer.java

@@ -0,0 +1,19 @@
+package com.example.demo.config;
+
+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;
+
+public class BigDecimalSerializer extends JsonSerializer<BigDecimal> {
+    @Override
+    public void serialize(BigDecimal value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+        if (value == null) {
+            gen.writeNull();
+        } else {
+            // 去除末尾多余的零，例如：100.00 -> 100, 12.30 -> 12.3
+            gen.writeNumber(value.stripTrailingZeros());
+        }
+    }
+}

src/main/java/com/example/demo/domain/vo/cash/UserWalletRecordVO.java

@@ -1,11 +1,13 @@
 package com.example.demo.domain.vo.cash;
 
 import com.alibaba.excel.annotation.ExcelIgnore;
+import com.example.demo.config.BigDecimalSerializer;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
-
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import java.math.BigDecimal;
 import java.util.Date;
 
 // 用户钱包明细 VO（包含用户信息）
@@ -27,7 +29,8 @@ public class UserWalletRecordVO {
     private Integer type;                  // 交易类型（0=充值，1=消耗，2=退款）
     private String typeText;               // 交易类型文本（多语言）
     private String transactionCurrency;    // 交易币种
-    private Integer amount;                // 交易金额
+    @JsonSerialize(using = BigDecimalSerializer.class)
+    private BigDecimal amount;                // 交易金额
     private String orderCode;              // 交易单号
     private String description;            // 交易说明
     @ExcelIgnore

src/main/resources/cashMapper/CashCollectionMapper.xml

@@ -506,7 +506,7 @@
         w.wallet_name as walletName,
         uwr.type,
         uwr.transaction_currency,
-        uwr.amount/100 as amount,
+        CAST(uwr.amount AS DECIMAL(10,2))/100 as amount,
         uwr.order_code as orderCode,
         uwr.description,
         uwr.status,