首页 banner 站内链接自动补尾斜杠，避免多一次 301

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/service/playletser/home.go

@@ -2,6 +2,9 @@ package playletser
 
 import (
 	"fmt"
+	"net/url"
+	"path"
+	"strings"
 	"sync"
 	"time"
 	"videoweb/app/service/upstream"
@@ -101,7 +104,26 @@ func ActiveHomeBanners(list []HomeBannerData) []HomeBannerData {
 		if !item.Status {
 			continue
 		}
+		item.URL = normalizeBannerURL(item.URL)
 		out = append(out, item)
 	}
 	return out
 }
+
+// normalizeBannerURL 站内页面链接补尾斜杠，避免后台漏填 "/" 时每次点击都多一次 301。
+// 外链、协议相对地址、带扩展名的文件路径保持原样。
+func normalizeBannerURL(raw string) string {
+	raw = strings.TrimSpace(raw)
+	if !strings.HasPrefix(raw, "/") || strings.HasPrefix(raw, "//") {
+		return raw
+	}
+	u, err := url.Parse(raw)
+	if err != nil || u.Path == "" || strings.HasSuffix(u.Path, "/") {
+		return raw
+	}
+	if strings.Contains(path.Base(u.Path), ".") {
+		return raw
+	}
+	u.Path += "/"
+	return u.String()
+}

app/service/playletser/home_banner_test.go

@@ -0,0 +1,32 @@
+package playletser
+
+import "testing"
+
+func TestNormalizeBannerURL(t *testing.T) {
+	cases := map[string]string{
+		"/detail/hqtqxdqe":        "/detail/hqtqxdqe/",
+		"/detail/hqtqxdqe/":       "/detail/hqtqxdqe/",
+		" /play/abc ":             "/play/abc/",
+		"/detail/abc?from=banner": "/detail/abc/?from=banner",
+		"/":                       "/",
+		"":                        "",
+		"https://example.com/a":   "https://example.com/a",
+		"//cdn.example.com/a":     "//cdn.example.com/a",
+		"/static/images/a.png":    "/static/images/a.png",
+	}
+	for in, want := range cases {
+		if got := normalizeBannerURL(in); got != want {
+			t.Errorf("normalizeBannerURL(%q) = %q, want %q", in, got, want)
+		}
+	}
+}
+
+func TestActiveHomeBannersNormalizesURL(t *testing.T) {
+	got := ActiveHomeBanners([]HomeBannerData{
+		{ID: 1, URL: "/detail/abc", Status: true},
+		{ID: 2, URL: "/detail/off", Status: false},
+	})
+	if len(got) != 1 || got[0].URL != "/detail/abc/" {
+		t.Fatalf("unexpected banners: %+v", got)
+	}
+}