diff --git a/controller/channel.go b/controller/channel.go
index bf735779..8e5ae40a 100644
--- a/controller/channel.go
+++ b/controller/channel.go
@@ -394,9 +394,19 @@ func getVertexArrayKeys(keys string) ([]string, error) {
 	}
 	cleanKeys := make([]string, 0, len(keyArray))
 	for _, key := range keyArray {
-		keyStr := fmt.Sprintf("%v", key)
+		var keyStr string
+		switch v := key.(type) {
+		case string:
+			keyStr = strings.TrimSpace(v)
+		default:
+			bytes, err := json.Marshal(v)
+			if err != nil {
+				return nil, fmt.Errorf("Vertex AI key JSON 编码失败: %w", err)
+			}
+			keyStr = string(bytes)
+		}
 		if keyStr != "" {
-			cleanKeys = append(cleanKeys, strings.TrimSpace(keyStr))
+			cleanKeys = append(cleanKeys, keyStr)
 		}
 	}
 	if len(cleanKeys) == 0 {
diff --git a/model/channel.go b/model/channel.go
index 0b8d9ba2..4144075c 100644
--- a/model/channel.go
+++ b/model/channel.go
@@ -53,8 +53,8 @@ type ChannelInfo struct {
 }
 
 // Value implements driver.Valuer interface
-func (c *ChannelInfo) Value() (driver.Value, error) {
-	return common.EncodeJson(c)
+func (c ChannelInfo) Value() (driver.Value, error) {
+	return common.EncodeJson(&c)
 }
 
 // Scan implements sql.Scanner interface