修复了EQ 曲线接口中，+没有转义成空格的 bug

internal/handler/curve.go

@@ -8,7 +8,6 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"net/url"
 	"strconv"
 	"strings"
 	"time"
@@ -54,8 +53,8 @@ func NewCurveHandler(repo *repository.CurveRepository, curveCache *cache.CurveCa
 //
 // GET /audio/modelCurve?brand=xxx&name=xxx&base64Resp=true
 func (h *CurveHandler) ModelCurve(c *gin.Context) {
-	brand := strings.TrimSpace(queryParam(c, "brand"))
-	name := strings.TrimSpace(queryParam(c, "name"))
+	brand := strings.TrimSpace(c.Query("brand"))
+	name := strings.TrimSpace(c.Query("name"))
 	base64Resp := encode.ParseBase64Param(c)
 
 	if brand == "" || name == "" {
@@ -143,9 +142,8 @@ func (h *CurveHandler) ModelCurve(c *gin.Context) {
 //
 // GET /audio/getCurve?brand=xxx&name=xxx&target=xxx&base64Resp=true
 func (h *CurveHandler) GetCurve(c *gin.Context) {
-	brand := strings.TrimSpace(queryParam(c, "brand"))
-	name := strings.TrimSpace(queryParam(c, "name"))
-	// target 使用标准 query 解码：+ 表示空格（如 Harman+over-ear+2018 → Harman over-ear 2018）
+	brand := strings.TrimSpace(c.Query("brand"))
+	name := strings.TrimSpace(c.Query("name"))
 	target := strings.TrimSpace(c.Query("target"))
 	base64Resp := encode.ParseBase64Param(c)
 
@@ -557,25 +555,3 @@ func intVal(m map[string]any, key string, defaultVal int) int {
 		return defaultVal
 	}
 }
-
-// queryParam 从 URL 原始 query 中获取参数，保留 + 为字面量而非空格
-func queryParam(c *gin.Context, key string) string {
-	vals, ok := c.Request.URL.Query()[key]
-	if !ok || len(vals) == 0 {
-		return ""
-	}
-	// c.Query() 会把 + 解码为空格，这里从原始 query 手动解码，+ 保留为 +
-	if strings.Contains(vals[0], " ") {
-		rawQuery := c.Request.URL.RawQuery
-		for _, pair := range strings.Split(rawQuery, "&") {
-			kv := strings.SplitN(pair, "=", 2)
-			if len(kv) == 2 && kv[0] == key {
-				decoded, err := url.PathUnescape(strings.ReplaceAll(kv[1], "+", "%2B"))
-				if err == nil {
-					return decoded
-				}
-			}
-		}
-	}
-	return vals[0]
-}

internal/handler/model_csv.go

@@ -44,9 +44,9 @@ func NewModelCSVHandler(s3 *storage.S3Storage, log *zap.Logger) *ModelCSVHandler
 //
 // GET /audio/getModelCSV?brand=Abyss&model=Dinan DZ&form=over-ear&base64Resp=true
 func (h *ModelCSVHandler) GetModelCSV(c *gin.Context) {
-	brand := strings.TrimSpace(queryParam(c, "brand"))
-	model := strings.TrimSpace(queryParam(c, "model"))
-	form := strings.TrimSpace(queryParam(c, "form"))
+	brand := strings.TrimSpace(c.Query("brand"))
+	model := strings.TrimSpace(c.Query("model"))
+	form := strings.TrimSpace(c.Query("form"))
 	base64Resp := encode.ParseBase64Param(c)
 
 	if brand == "" || model == "" || form == "" {