refactor: enhance price retrieval logic in getStandardPrice function

- Improved the price retrieval logic to handle multiple data types (float64, int, int64, json.Number, string) for better flexibility.
- Updated comments to clarify the source of pricing configurations and ensure consistency with frontend settings.
- Adjusted default pricing values for the "match" product type to align with new business requirements.

soul-api/internal/handler/miniprogram.go

@@ -1213,9 +1213,13 @@ func getStandardPrice(db *gorm.DB, productType, productID string) (float64, erro
 	switch productType {
 	case "fullbook", "vip", "match":
 		// 从 system_config 读取
+		// 价格来源要与对应前端配置端一致，防止小程序显示 1 元但后端用错价格。
 		configKey := "chapter_config"
 		if productType == "vip" {
 			configKey = "vip_config"
+		} else if productType == "match" {
+			// 找伙伴匹配次数价格应使用 match_config
+			configKey = "match_config"
 		}
 		var row model.SystemConfig
 		if err := db.Where("config_key = ?", configKey).First(&row).Error; err == nil {
@@ -1226,13 +1230,37 @@ func getStandardPrice(db *gorm.DB, productType, productID string) (float64, erro
 					"vip":      "price",
 					"match":    "matchPrice",
 				}
-				if v, ok := cfg[fieldMap[productType]].(float64); ok && v > 0 {
-					return v, nil
+				raw := cfg[fieldMap[productType]]
+				if raw != nil {
+					switch v := raw.(type) {
+					case float64:
+						if v > 0 {
+							return v, nil
+						}
+					case int:
+						if v > 0 {
+							return float64(v), nil
+						}
+					case int64:
+						if v > 0 {
+							return float64(v), nil
+						}
+					case json.Number:
+						f, err := v.Float64()
+						if err == nil && f > 0 {
+							return f, nil
+						}
+					case string:
+						f, err := strconv.ParseFloat(strings.TrimSpace(v), 64)
+						if err == nil && f > 0 {
+							return f, nil
+						}
+					}
 				}
 			}
 		}
 		// 兜底默认值
-		defaults := map[string]float64{"fullbook": 9.9, "vip": 1980, "match": 68}
+		defaults := map[string]float64{"fullbook": 9.9, "vip": 1980, "match": 1}
 		if p, ok := defaults[productType]; ok {
 			return p, nil
 		}