feat(routers): 平台后台 SPA 由 Go 自己吐,绕开 nginx 反代缺失
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package routers
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import (
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"net/http"
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"os"
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"strings"
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beego "github.com/beego/beego/v2/server/web"
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"github.com/beego/beego/v2/server/web/context"
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)
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// RegisterPlatformSPA 让 Go 自己吐指定 hosts 的平台后台 SPA 静态资源,
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// 替代 nginx 在对应 server 块里的
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//
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// location ~ ^/(platform|backend|auth|api|app)/ { proxy_pass http://127.0.0.1:8081; ... }
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//
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// 那段反代规则(曾因宝塔重生成 vhost 被冲掉而出现 "页面 404")。
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//
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// 规则:
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// - 仅对 hosts 列表里的 host 生效;
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// - 这些前缀直接放行交给 beego Router / Static 处理,不接管:
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// /platform/、/backend/、/auth/、/api/、/app/ → 业务 API
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// /uploads/、/themes/ → main.go SetStaticPath 注册的静态目录
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// /.well-known/ → ACME 证书验证目录
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// - 其余请求从 spaDir 直接 ServeFile;
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// - 文件不存在时回 index.html(SPA hash 路由 fallback)。
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//
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// 调用方在 router.go init() 里读 app.conf 的 platform_spa_dir / platform_spa_hosts。
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// spaDir 为空或 hosts 为空则视为关闭功能,行为不变。
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func RegisterPlatformSPA(spaDir string, hosts ...string) {
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spaDir = strings.TrimSpace(spaDir)
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if spaDir == "" || len(hosts) == 0 {
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return
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}
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hostSet := make(map[string]struct{}, len(hosts))
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for _, h := range hosts {
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h = strings.ToLower(strings.TrimSpace(h))
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if h != "" {
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hostSet[h] = struct{}{}
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}
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}
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passThrough := []string{
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"/platform/", "/backend/", "/auth/", "/api/", "/app/",
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"/uploads/", "/themes/",
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"/.well-known/",
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}
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beego.InsertFilter("*", beego.BeforeStatic, func(ctx *context.Context) {
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host := strings.ToLower(ctx.Request.Host)
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if i := strings.IndexByte(host, ':'); i > 0 {
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host = host[:i]
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}
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if _, ok := hostSet[host]; !ok {
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return
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}
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path := ctx.Request.URL.Path
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for _, p := range passThrough {
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if strings.HasPrefix(path, p) {
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return
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}
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}
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// 静态资源或入口
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rel := path
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if rel == "" || rel == "/" {
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rel = "/index.html"
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}
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target := spaDir + rel
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if f, err := os.Stat(target); err == nil && !f.IsDir() {
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http.ServeFile(ctx.ResponseWriter, ctx.Request, target)
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return
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}
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// SPA fallback:未知路径(hash 路由直接访问 /xxx/yyy)回 index.html
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http.ServeFile(ctx.ResponseWriter, ctx.Request, spaDir+"/index.html")
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})
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}
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