feat(smalltrip,middleware): FormMethod middleware

smalltrip/middleware/request.go

@@ -0,0 +1,17 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+)
+
+func FormMethod(key string) Middleware {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			if v := r.FormValue(key); v != "" {
+				r.Method = strings.ToUpper(v)
+			}
+			next.ServeHTTP(w, r)
+		})
+	}
+}