feat(music): 曲目增加背景图字段与管理端上传

新增 migration 0021（background_key/url）、playlist/CRUD 返回 backgroundUrl、 POST .../music/{id}/background，并热更 popadmin 音乐列表背景上传；公读策略放行 perm/music/*。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-24 09:17:21 +08:00 · 2026-09-24 09:17:21 +08:00 · ade98eef4d
commit ade98eef4d
parent 0a54e9b2ef
14 changed files with 5326 additions and 41 deletions
--- a/.gitignore
+++ b/.gitignore
@ -11,3 +11,7 @@ coverage.out
 .env
 certs/*.key
 server
+
+_release/
+*.pem
+
--- a/deploy/docker/config.docker.yaml
+++ b/deploy/docker/config.docker.yaml
@ -57,9 +57,11 @@ jwt:
  denylist_prefix: "denylist:"
  refresh_prefix: "refresh:"

-# Must match Aliyun wyrs.admin.jwt-secret / WYRS_ADMIN_JWT_SECRET (popadmin login).
+# Must match Java WYRS_ADMIN_JWT_SECRET (popadmin login).
+# Prod validate REJECTS the jar default "wyrs-admin-jwt-secret-change-in-production-2025".
+# Prefer setting the same value via SPARK_ADMIN_JWT_SECRET and /etc/wyrs-admin/app.env.
 admin:
-  jwt_secret: "wyrs-admin-jwt-secret-change-in-production"
+  jwt_secret: "replace-with-shared-WYRS_ADMIN_JWT_SECRET"

 taskpool:
  size: 256
--- a/deploy/popadmin/patch_music_bg.py
+++ b/deploy/popadmin/patch_music_bg.py
@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""Patch popadmin.js music() UI to support background image upload/display."""
+from __future__ import annotations
+
+from pathlib import Path
+
+p = Path(__file__).with_name("popadmin.js")
+c = p.read_text(encoding="utf-8")
+
+replacements = [
+    (
+        "· 封面/mp3 存 sparkr",
+        "· 封面/背景图/mp3 存 sparkr",
+    ),
+    (
+        "<thead><tr><th>封面</th><th>ID</th><th>曲名</th><th>会员</th><th>上架</th><th>排序</th><th>音频</th><th>操作</th></tr></thead>",
+        "<thead><tr><th>封面</th><th>背景</th><th>ID</th><th>曲名</th><th>会员</th><th>上架</th><th>排序</th><th>音频</th><th>操作</th></tr></thead>",
+    ),
+    (
+        "${t.coverUrl ? `<img src=\"${esc(t.coverUrl)}\" alt=\"\" style=\"width:48px;height:48px;object-fit:cover;border-radius:6px\">` : '—'}</td>\n"
+        "              <td>${esc(t.id)}</td>",
+        "${t.coverUrl ? `<img src=\"${esc(t.coverUrl)}\" alt=\"\" style=\"width:48px;height:48px;object-fit:cover;border-radius:6px\">` : '—'}</td>\n"
+        "              <td>${t.backgroundUrl ? `<img src=\"${esc(t.backgroundUrl)}\" alt=\"\" style=\"width:48px;height:48px;object-fit:cover;border-radius:6px\">` : '—'}</td>\n"
+        "              <td>${esc(t.id)}</td>",
+    ),
+    (
+        '<label class="secondary btn-sm" style="display:inline-block;cursor:pointer;padding:4px 8px">封面<input type="file" accept="image/*" data-mcover="${esc(t.id)}" hidden></label>\n'
+        '                <label class="secondary btn-sm" style="display:inline-block;cursor:pointer;padding:4px 8px">mp3<input type="file" accept="audio/mpeg,.mp3" data-maudio="${esc(t.id)}" hidden></label>',
+        '<label class="secondary btn-sm" style="display:inline-block;cursor:pointer;padding:4px 8px">封面<input type="file" accept="image/*" data-mcover="${esc(t.id)}" hidden></label>\n'
+        '                <label class="secondary btn-sm" style="display:inline-block;cursor:pointer;padding:4px 8px">背景<input type="file" accept="image/*" data-mbg="${esc(t.id)}" hidden></label>\n'
+        '                <label class="secondary btn-sm" style="display:inline-block;cursor:pointer;padding:4px 8px">mp3<input type="file" accept="audio/mpeg,.mp3" data-maudio="${esc(t.id)}" hidden></label>',
+    ),
+    (
+        ": '<tr><td colspan=\"8\">暂无曲目</td></tr>'",
+        ": '<tr><td colspan=\"9\">暂无曲目</td></tr>'",
+    ),
+]
+
+for old, new in replacements:
+    if old not in c:
+        raise SystemExit(f"pattern not found:\n{old[:120]!r}")
+    if old.count(old) != 1 and c.count(old) != 1:
+        raise SystemExit(f"pattern not unique ({c.count(old)}):\n{old[:80]!r}")
+    c = c.replace(old, new, 1)
+
+handler_old = """    $('content').querySelectorAll('[data-mcover]').forEach((inp) => {
+      inp.onchange = async () => {
+        if (!inp.files?.[0]) return;
+        const fd = new FormData();
+        fd.append('file', inp.files[0]);
+        await apiUpload('/spark/music/' + inp.dataset.mcover + '/cover', fd);
+        pages.music();
+      };
+    });
+    $('content').querySelectorAll('[data-maudio]').forEach((inp) => {"""
+
+handler_new = """    $('content').querySelectorAll('[data-mcover]').forEach((inp) => {
+      inp.onchange = async () => {
+        if (!inp.files?.[0]) return;
+        const fd = new FormData();
+        fd.append('file', inp.files[0]);
+        await apiUpload('/spark/music/' + inp.dataset.mcover + '/cover', fd);
+        pages.music();
+      };
+    });
+    $('content').querySelectorAll('[data-mbg]').forEach((inp) => {
+      inp.onchange = async () => {
+        if (!inp.files?.[0]) return;
+        const fd = new FormData();
+        fd.append('file', inp.files[0]);
+        await apiUpload('/spark/music/' + inp.dataset.mbg + '/background', fd);
+        pages.music();
+      };
+    });
+    $('content').querySelectorAll('[data-maudio]').forEach((inp) => {"""
+
+if handler_old not in c:
+    raise SystemExit("cover/audio handlers not found")
+if "data-mbg" in c and "/background" in c[c.find("async music()") : c.find("async novelCms()")]:
+    print("already patched?")
+else:
+    c = c.replace(handler_old, handler_new, 1)
+
+p.write_text(c, encoding="utf-8")
+music = c[c.find("async music()") : c.find("async novelCms()")]
+assert "backgroundUrl" in music
+assert "data-mbg" in music
+assert "/background" in music
+print("patched ok", p, "bytes", p.stat().st_size)
--- a/deploy/popadmin/popadmin.js
+++ b/deploy/popadmin/popadmin.js
--- a/docs/popadmin-music-novels-deploy.md
+++ b/docs/popadmin-music-novels-deploy.md
@ -3,28 +3,38 @@
 ## 1. spark-server（音乐 API + OpenAPI）

 ```bash
-# 新加坡机
-cd /opt/spark-server   # 或实际路径
-# 拉代码后
-./cmd/migrate   # 或项目惯用 migrate，执行 migrations/0020_music.sql
-# 重启 spark-server 进程 / docker compose
+# 本机（Windows/WSL）：构建并部署到新加坡机
+make deploy
+# 会：linux 交叉编译 → docker image → 上传 ECS → spark-migrate（含 0020_music / 0021_music_background）→ 重启容器 → nginx reload
+```
+
+新加坡机手工补跑迁移（仅 image 已更新但 migrate 未跑时）：
+
+```bash
+docker exec spark-server spark-migrate -config /app/configs/config.yaml
+# 或 compose 目录下：docker compose run --rm spark-server spark-migrate -config /app/configs/config.yaml
 sudo nginx -t && sudo nginx -s reload
-# 确认 include 了更新后的 popadmin-spark-admin-locations.conf（含 music）
+# 确认 include 了 popadmin-spark-admin-locations.conf（含 music，client_max_body_size 55m）
 ```

 验证：

- `GET https://sparkapi.wyrs365.com/v1/music/playlist` → `code=0`
- `GET https://sparkapi.wyrs365.com/docs` → 可见 music / admin-music / novels / admin-novels / 登录设备 Breaking 说明
- popadmin 登录后「音乐列表」：`GET/POST /api/admin/spark/music`
+- `GET https://sparkapi.wyrs365.com/v1/music/playlist` → `code=0`，曲目含 `coverUrl` / `backgroundUrl`（可空）/ `audioUrl`
+- `GET https://sparkapi.wyrs365.com/docs` → 可见 music / admin-music
+- popadmin「音乐列表」：封面 / **背景** / mp3 上传；`POST /api/admin/spark/music/{id}/background`

 ## 2. Aliyun wyrs-admin（popadmin 静态）

-热更或发版 `static/popadmin/js/popadmin.js`（侧栏「音乐列表」「小说内容管理」）。
+热更音乐背景图 UI（与现网一致）：

-新加坡若用 static-override，同步覆盖：
+```bash
+# 源：spark-server/deploy/popadmin/popadmin.js（已含背景列与上传）
+scp -i ~/.ssh/wyrs_shanghai_deploy.pem deploy/popadmin/popadmin.js \
+  root@47.236.66.9:/opt/wyrs-admin/static-override/popadmin.js
+# 若 index 带 ?v= 缓存戳，同步 bump popadmin.index.html
+```

-`/opt/wyrs-admin/static-override/popadmin.js`（或等价路径）并 bump `?v=`。
+新加坡若用 static-override，覆盖后强刷浏览器即可。

 ## 3. FullStoryNovel CMS（小说 iframe）

@ -39,3 +49,16 @@ sudo nginx -t && sudo nginx -s reload

 OpenAPI 已按 `Spark资源文档/devices-client.md` 更新契约。  
 **当前 Go 实现仍为旧登录**（Body 必填客户端 `device_id`、字符串 `device_type`，JWT 无 `aid`）。上线新契约前需改 auth/login、JWT、meta 枚举。
+
+## 5. Demo 曲目（可选）
+
+仓库旁 `_demo_music/`：`tracks.json` + `01..10.mp3/png` + `upload_demo.py`。  
+背景图**可空**，demo **不强制**补背景；脚本勿删已有曲目（仅 POST 新建）。
+
+```bash
+# 在新加坡机（或可访问 popadmin 登录与 spark admin API 的环境）
+export SPARK_ADMIN_BASE=http://127.0.0.1:18080
+export POPADMIN_LOGIN=http://127.0.0.1:8090/api/admin/auth/login
+python3 upload_demo.py
+curl -sS https://sparkapi.wyrs365.com/v1/music/playlist | jq '.data.items|length,.data.items[0]|{title,coverUrl,backgroundUrl,audioUrl}'
+```
--- a/internal/infrastructure/objectstore/policy.go
+++ b/internal/infrastructure/objectstore/policy.go
@ -86,8 +86,8 @@ func (s *Store) applyCORS(ctx context.Context) {
 	}
 }

-// applyPublicRead lets browsers load avatars without a presigned GET.
-// chat/ and perm/fav/ stay private.
+// applyPublicRead lets browsers load avatars / group icons / music assets without a
+// presigned GET. chat/ and perm/fav/ stay private.
 func (s *Store) applyPublicRead(ctx context.Context) {
 	pabCtx, cancel := context.WithTimeout(ctx, 3*time.Second)
 	defer cancel()
@ -117,13 +117,14 @@ func publicReadPolicy(bucket string) string {
 	return fmt.Sprintf(`{
  "Version": "2012-10-17",
  "Statement": [{
-    "Sid": "PublicReadAvatars",
+    "Sid": "PublicReadPerm",
    "Effect": "Allow",
    "Principal": "*",
    "Action": ["s3:GetObject"],
    "Resource": [
      "arn:aws:s3:::%[1]s/perm/avatar/*",
-      "arn:aws:s3:::%[1]s/perm/group/*"
+      "arn:aws:s3:::%[1]s/perm/group/*",
+      "arn:aws:s3:::%[1]s/perm/music/*"
    ]
  }]
 }`, bucket)
--- a/internal/infrastructure/objectstore/store_test.go
+++ b/internal/infrastructure/objectstore/store_test.go
@ -104,9 +104,9 @@ func TestGetPutNotReady(t *testing.T) {
 	}
 }

-func TestPublicReadPolicyCoversAvatarsOnly(t *testing.T) {
+func TestPublicReadPolicyCoversAvatarsAndMusic(t *testing.T) {
 	p := publicReadPolicy("spark")
-	if !strings.Contains(p, "spark/perm/avatar/*") || !strings.Contains(p, "spark/perm/group/*") {
+	if !strings.Contains(p, "spark/perm/avatar/*") || !strings.Contains(p, "spark/perm/group/*") || !strings.Contains(p, "spark/perm/music/*") {
 		t.Fatalf("%s", p)
 	}
 	if strings.Contains(p, "chat/") || strings.Contains(p, "perm/fav") || strings.Contains(p, "perm/moment") {
--- a/internal/module/music/entity/track.go
+++ b/internal/module/music/entity/track.go
@ -6,8 +6,9 @@ const (
 	SettingMemberPreviewSeconds = "member_preview_seconds"
 	DefaultPreviewSeconds       = 30

-	MaxCoverBytes = 5 << 20  // 5 MiB
-	MaxAudioBytes = 50 << 20 // 50 MiB
+	MaxCoverBytes      = 5 << 20  // 5 MiB
+	MaxBackgroundBytes = 5 << 20  // 5 MiB
+	MaxAudioBytes      = 50 << 20 // 50 MiB
 )

 // Track is one curated music item for the Spark music list.
@ -16,8 +17,10 @@ type Track struct {
 	Title         string    `json:"title"`
 	CoverKey      string    `json:"coverKey"`
 	AudioKey      string    `json:"audioKey"`
+	BackgroundKey string    `json:"backgroundKey"`
 	CoverURL      string    `json:"coverUrl"`
 	AudioURL      string    `json:"audioUrl"`
+	BackgroundURL string    `json:"backgroundUrl"`
 	RequireMember bool      `json:"requireMember"`
 	SortOrder     int       `json:"sortOrder"`
 	Enabled       bool      `json:"enabled"`
@ -32,6 +35,6 @@ type Settings struct {

 // Playlist is the client-facing payload.
 type Playlist struct {
-	Items                    []Track `json:"items"`
-	MemberPreviewSeconds     int     `json:"memberPreviewSeconds"`
+	Items                []Track `json:"items"`
+	MemberPreviewSeconds int     `json:"memberPreviewSeconds"`
 }
--- a/internal/module/music/logic/service.go
+++ b/internal/module/music/logic/service.go
@ -181,36 +181,58 @@ func (s *Service) Delete(ctx context.Context, id int64) error {
 		return errs.ErrNotFound.WithMsg("曲目不存在")
 	}
 	_ = s.deleteObject(ctx, t.CoverKey)
+	_ = s.deleteObject(ctx, t.BackgroundKey)
 	_ = s.deleteObject(ctx, t.AudioKey)
 	return s.repo.Delete(ctx, id)
 }

 func (s *Service) UploadCover(ctx context.Context, id int64, filename string, body []byte, contentType string) (*entity.Track, error) {
+	return s.uploadImage(ctx, id, filename, body, contentType, "cover")
+}
+
+func (s *Service) UploadBackground(ctx context.Context, id int64, filename string, body []byte, contentType string) (*entity.Track, error) {
+	return s.uploadImage(ctx, id, filename, body, contentType, "background")
+}
+
+func (s *Service) uploadImage(ctx context.Context, id int64, filename string, body []byte, contentType, kind string) (*entity.Track, error) {
 	if !s.Ready() {
 		return nil, ErrNotReady
 	}
-	if len(body) == 0 {
-		return nil, errs.ErrInvalidArgument.WithMsg("请选择封面文件")
+	label := "封面"
+	maxBytes := entity.MaxCoverBytes
+	if kind == "background" {
+		label = "背景图"
+		maxBytes = entity.MaxBackgroundBytes
 	}
-	if len(body) > entity.MaxCoverBytes {
-		return nil, errs.ErrInvalidArgument.WithMsg("封面不能超过 5MB")
+	if len(body) == 0 {
+		return nil, errs.ErrInvalidArgument.WithMsg("请选择" + label + "文件")
+	}
+	if len(body) > maxBytes {
+		return nil, errs.ErrInvalidArgument.WithMsg(label + "不能超过 5MB")
 	}
 	ct := normalizeMIME(contentType, filename)
 	if !isImageMIME(ct) {
-		return nil, errs.ErrInvalidArgument.WithMsg("封面仅支持 jpg/png/webp/gif")
+		return nil, errs.ErrInvalidArgument.WithMsg(label + "仅支持 jpg/png/webp/gif")
 	}
 	t, err := s.repo.Get(ctx, id)
 	if err != nil {
 		return nil, errs.ErrNotFound.WithMsg("曲目不存在")
 	}
 	ext := extFor(ct, filename, "jpg")
-	key := fmt.Sprintf("perm/music/cover/%d/%d.%s", id, time.Now().UnixNano(), ext)
-	if err := s.put(ctx, key, body, ct, entity.MaxCoverBytes); err != nil {
+	key := fmt.Sprintf("perm/music/%s/%d/%d.%s", kind, id, time.Now().UnixNano(), ext)
+	if err := s.put(ctx, key, body, ct, maxBytes); err != nil {
 		return nil, err
 	}
-	old := t.CoverKey
-	t.CoverKey = key
-	t.CoverURL = s.publicURL(key)
+	var old string
+	if kind == "background" {
+		old = t.BackgroundKey
+		t.BackgroundKey = key
+		t.BackgroundURL = s.publicURL(key)
+	} else {
+		old = t.CoverKey
+		t.CoverKey = key
+		t.CoverURL = s.publicURL(key)
+	}
 	if err := s.repo.Update(ctx, t); err != nil {
 		return nil, err
 	}
--- a/internal/module/music/model/repo.go
+++ b/internal/module/music/model/repo.go
@ -31,8 +31,10 @@ type trackRow struct {
 	Title         string    `gorm:"column:title"`
 	CoverKey      string    `gorm:"column:cover_key"`
 	AudioKey      string    `gorm:"column:audio_key"`
+	BackgroundKey string    `gorm:"column:background_key"`
 	CoverURL      string    `gorm:"column:cover_url"`
 	AudioURL      string    `gorm:"column:audio_url"`
+	BackgroundURL string    `gorm:"column:background_url"`
 	RequireMember bool      `gorm:"column:require_member"`
 	SortOrder     int       `gorm:"column:sort_order"`
 	Enabled       bool      `gorm:"column:enabled"`
@ -104,8 +106,10 @@ func (r *Repo) Insert(ctx context.Context, t *entity.Track) error {
 		Title:         t.Title,
 		CoverKey:      t.CoverKey,
 		AudioKey:      t.AudioKey,
+		BackgroundKey: t.BackgroundKey,
 		CoverURL:      t.CoverURL,
 		AudioURL:      t.AudioURL,
+		BackgroundURL: t.BackgroundURL,
 		RequireMember: t.RequireMember,
 		SortOrder:     t.SortOrder,
 		Enabled:       t.Enabled,
@ -131,8 +135,10 @@ func (r *Repo) Update(ctx context.Context, t *entity.Track) error {
 		"title":          t.Title,
 		"cover_key":      t.CoverKey,
 		"audio_key":      t.AudioKey,
+		"background_key": t.BackgroundKey,
 		"cover_url":      t.CoverURL,
 		"audio_url":      t.AudioURL,
+		"background_url": t.BackgroundURL,
 		"require_member": t.RequireMember,
 		"sort_order":     t.SortOrder,
 		"enabled":        t.Enabled,
@ -192,8 +198,10 @@ func toEntity(row trackRow) entity.Track {
 		Title:         row.Title,
 		CoverKey:      row.CoverKey,
 		AudioKey:      row.AudioKey,
+		BackgroundKey: row.BackgroundKey,
 		CoverURL:      row.CoverURL,
 		AudioURL:      row.AudioURL,
+		BackgroundURL: row.BackgroundURL,
 		RequireMember: row.RequireMember,
 		SortOrder:     row.SortOrder,
 		Enabled:       row.Enabled,
--- a/internal/transport/http/docs/openapi.yaml
+++ b/internal/transport/http/docs/openapi.yaml
@ -1869,8 +1869,8 @@ paths:
      summary: 音乐列表（公开）
      description: |
        返回已上架曲目与全局「会员音乐免费试听秒数」。无需登录。
-        封面/音频为 sparkr 公网 URL（`https://sparkr.wyrs365.com/spark/perm/music/...`）。
-        客户端应按 `requireMember` 与 `memberPreviewSeconds` 控制试听。
+        封面/背景图/音频为 sparkr 公网 URL（`https://sparkr.wyrs365.com/spark/perm/music/...`）。
+        客户端应按 `requireMember` 与 `memberPreviewSeconds` 控制试听；`backgroundUrl` 可空。
      operationId: getMusicPlaylist
      security: []
      responses:
@ -2044,6 +2044,36 @@ paths:
            application/json:
              schema:
                $ref: "#/components/schemas/AdminApiResponse"
+  /api/admin/spark/music/{id}/background:
+    post:
+      tags: [admin-music]
+      summary: 上传背景图（multipart file）
+      description: 字段名 `file`；jpg/png/webp/gif，≤5MB。写入 RustFS `perm/music/background/...`。可空（未上传时 `backgroundUrl` 为空串）。
+      operationId: adminUploadMusicBackground
+      security:
+        - bearerAuth: []
+      parameters:
+        - name: id
+          in: path
+          required: true
+          schema: { type: integer, format: int64 }
+      requestBody:
+        required: true
+        content:
+          multipart/form-data:
+            schema:
+              type: object
+              required: [file]
+              properties:
+                file:
+                  type: string
+                  format: binary
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/AdminApiResponse"
  /api/admin/spark/music/{id}/audio:
    post:
      tags: [admin-music]
@ -2926,8 +2956,10 @@ components:
        title: { type: string }
        coverKey: { type: string }
        audioKey: { type: string }
+        backgroundKey: { type: string, description: 背景图 object_key；可空 }
        coverUrl: { type: string, description: sparkr 公网 URL }
        audioUrl: { type: string, description: sparkr 公网 URL }
+        backgroundUrl: { type: string, description: 背景图 sparkr 公网 URL；可空 }
        requireMember: { type: boolean, description: true=需会员 }
        sortOrder: { type: integer }
        enabled: { type: boolean }
--- a/internal/transport/http/handler/admin/music.go
+++ b/internal/transport/http/handler/admin/music.go
@ -133,14 +133,18 @@ func (h *MusicHandler) Delete(c *gin.Context) {
 }

 func (h *MusicHandler) UploadCover(c *gin.Context) {
-	h.upload(c, true)
+	h.upload(c, "cover")
+}
+
+func (h *MusicHandler) UploadBackground(c *gin.Context) {
+	h.upload(c, "background")
 }

 func (h *MusicHandler) UploadAudio(c *gin.Context) {
-	h.upload(c, false)
+	h.upload(c, "audio")
 }

-func (h *MusicHandler) upload(c *gin.Context, cover bool) {
+func (h *MusicHandler) upload(c *gin.Context, kind string) {
 	if !h.ready(c) {
 		return
 	}
@ -162,9 +166,12 @@ func (h *MusicHandler) upload(c *gin.Context, cover bool) {
 	}
 	ct := hdr.Header.Get("Content-Type")
 	var out any
-	if cover {
+	switch kind {
+	case "cover":
 		out, err = h.svc.UploadCover(c.Request.Context(), id, hdr.Filename, body, ct)
-	} else {
+	case "background":
+		out, err = h.svc.UploadBackground(c.Request.Context(), id, hdr.Filename, body, ct)
+	default:
 		out, err = h.svc.UploadAudio(c.Request.Context(), id, hdr.Filename, body, ct)
 	}
 	if err != nil {
--- a/internal/transport/http/router_admin.go
+++ b/internal/transport/http/router_admin.go
@ -84,5 +84,6 @@ func registerMusicAdmin(g *gin.RouterGroup, h *adminhandler.MusicHandler) {
 	g.PATCH("/music/:id", h.Update)
 	g.DELETE("/music/:id", h.Delete)
 	g.POST("/music/:id/cover", h.UploadCover)
+	g.POST("/music/:id/background", h.UploadBackground)
 	g.POST("/music/:id/audio", h.UploadAudio)
 }
--- a/migrations/0021_music_background.sql
+++ b/migrations/0021_music_background.sql
@ -0,0 +1,5 @@
+-- 曲目背景图（与 cover 同形态：object key + 公网 URL；可空）。
+
+ALTER TABLE t_music_tracks
+    ADD COLUMN background_key VARCHAR(512) NOT NULL DEFAULT '' COMMENT '背景图 object_key（sparkr）' AFTER cover_url,
+    ADD COLUMN background_url VARCHAR(1024) NOT NULL DEFAULT '' COMMENT '背景图公网 URL' AFTER background_key;