feat(handler): 添加重定向指令并优化代理指令处理

- 在 server/directive.go 中添加了新的 Redirect 指令，用于实现请求重定向
- 在 handler/proxy.go 中增加了对非 Proxy_ 指令的过滤，提高了代理处理的灵活性和安全性

handler/proxy.go

@@ -62,6 +62,9 @@ func makeProxy(upstream string, path *model.HttpPath, index int) *httputil.Rever
 	directiveHandlers := []func(r *http.Request){}
 	if len(path.Directives) > 0 {
 		for _, directive := range path.Directives {
+			if !strings.HasPrefix(directive, "Proxy_") {
+				continue
+			}
 			ndirective := strings.TrimPrefix(directive, "Proxy_")
 			d := strings.Replace(string(ndirective), "$target", upstream, 1)
 			dh := GetUpdaterFn(d)

server/directive.go

@@ -67,6 +67,19 @@ var BasicAuthDirective Directive = func(args ...string) Middleware {
 	return BasicAuth
 }
 
+var RedirectDirective Directive = func(args ...string) Middleware {
+	return func(w http.ResponseWriter, r *http.Request, next http.Handler) {
+		l := gologger.GetLogger("Directive")
+		l.Debug("Redirect")
+		if len(args) < 1 {
+			http.Error(w, "Redirect directive requires a URL", http.StatusBadRequest)
+			return
+		}
+		targetURL := args[0] + r.URL.Path
+		http.Redirect(w, r, targetURL, http.StatusFound)
+	}
+}
+
 // 在DirectiveMap中注册新指令
 var DirectiveMap = map[string]Directive{
 	"Set-Header":    Set_Header,
@@ -75,4 +88,5 @@ var DirectiveMap = map[string]Directive{
 	"Record-Access": DRecordAccess,
 	"Jwt-Auth":      JWTDirective,
 	"Basic-Auth":    BasicAuthDirective,
+	"Redirect":      RedirectDirective,
 }