http://127.0.0.1:8087/api/recommend/4?&n=10&category=m&category=n 多分类筛选不生效

[simanlx]

http://127.0.0.1:8087/api/recommend/4?&n=10&category=m&category=n 多分类筛选不生效

`
func (c *GorseClient) GetItemRecommend(ctx context.Context, userId string, categories []string, writeBackType,writeBackDelay string, n, offset int) ([]string, error) {

var queryCategories string

if len(categories) > 0 {
	queryCategories = "&category=" + strings.Join(categories, "&category=")
}

return request[[]string, any](ctx, c, "GET", c.entryPoint+fmt.Sprintf("/api/recommend/%s?write-back-type=%s&write-back-delay=%s&n=%d&offset=%d%s", userId, writeBackType, writeBackDelay, n, offset, queryCategories), nil)

}
`