From fc532ba40dc64bd48f5dabacefd5619845666d10 Mon Sep 17 00:00:00 2001
From: FrogIsToad <1165240284@qq.com>
Date: Tue, 21 Dec 2021 08:51:54 -0600
Subject: [PATCH] fixed chapter_19 examples error :add http header (#814)

---
 eBook/examples/chapter_19/goto_v2/main.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/eBook/examples/chapter_19/goto_v2/main.go b/eBook/examples/chapter_19/goto_v2/main.go
index cecdbc9..dbf5c63 100644
--- a/eBook/examples/chapter_19/goto_v2/main.go
+++ b/eBook/examples/chapter_19/goto_v2/main.go
@@ -26,6 +26,7 @@ func Redirect(w http.ResponseWriter, r *http.Request) {
 func Add(w http.ResponseWriter, r *http.Request) {
 	url := r.FormValue("url")
 	if url == "" {
+		w.Header().Set("Content-Type", "text/html")
 		fmt.Fprint(w, AddForm)
 		return
 	}