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增加前后端图片传输时的缓存支持，优化前端页面

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hanxuanyu
2026-01-27 13:34:23 +08:00
parent be0bcb4d51
commit 6dfffe1236
9 changed files with 546 additions and 761 deletions
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17
internal/http/handlers/image.go
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@@ -173,20 +173,30 @@ func handleImageResponse(c *gin.Context, img *model.Image) {
mode := config.GetConfig().API.Mode
if mode == "redirect" {
if selected.PublicURL != "" {
c.Header("Cache-Control", "public, max-age=604800") // 7天
c.Redirect(http.StatusFound, selected.PublicURL)
} else if img.URLBase != "" {
// 兜底重定向到原始 Bing
bingURL := fmt.Sprintf("https://www.bing.com%s_%s.jpg", img.URLBase, selected.Variant)
c.Header("Cache-Control", "public, max-age=604800") // 7天
c.Redirect(http.StatusFound, bingURL)
} else {
serveLocal(c, selected.StorageKey)
serveLocal(c, selected.StorageKey, img.Date)
}
} else {
serveLocal(c, selected.StorageKey)
serveLocal(c, selected.StorageKey, img.Date)
}
}
func serveLocal(c *gin.Context, key string) {
func serveLocal(c *gin.Context, key string, etag string) {
if etag != "" {
c.Header("ETag", fmt.Sprintf("\"%s\"", etag))
if c.GetHeader("If-None-Match") == fmt.Sprintf("\"%s\"", etag) {
c.AbortWithStatus(http.StatusNotModified)
return
}
}
reader, contentType, err := storage.GlobalStorage.Get(context.Background(), key)
if err != nil {
util.Logger.Error("Failed to get image from storage", zap.String("key", key), zap.Error(err))
@@ -198,6 +208,7 @@ func serveLocal(c *gin.Context, key string) {
if contentType != "" {
c.Header("Content-Type", contentType)
}
c.Header("Cache-Control", "public, max-age=604800") // 7天
io.Copy(c.Writer, reader)
}