From 1592e9c04dd73e26fb35cab9e9370f89b414c8c8 Mon Sep 17 00:00:00 2001
From: supiyun <supiyun@163.com>
Date: Mon, 16 Mar 2015 17:40:55 +0800
Subject: [PATCH] =?UTF-8?q?=E9=AA=8C=E8=AF=81=E7=A0=81reload=E9=97=AE?=
 =?UTF-8?q?=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

当页面放置一段时间，验证码将从缓存中失效。当用户再来刷新验证码将出现验证码404。对于reload操作应该直接生成验证码。
---
 utils/captcha/captcha.go | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/utils/captcha/captcha.go b/utils/captcha/captcha.go
index 62adc81d..14c6c3b3 100644
--- a/utils/captcha/captcha.go
+++ b/utils/captcha/captcha.go
@@ -132,15 +132,6 @@ func (c *Captcha) Handler(ctx *context.Context) {
 
 	key := c.key(id)
 
-	if v, ok := c.store.Get(key).([]byte); ok {
-		chars = v
-	} else {
-		ctx.Output.SetStatus(404)
-		ctx.WriteString("captcha not found")
-		return
-	}
-
-	// reload captcha
 	if len(ctx.Input.Query("reload")) > 0 {
 		chars = c.genRandChars()
 		if err := c.store.Put(key, chars, c.Expiration); err != nil {
@@ -149,6 +140,14 @@ func (c *Captcha) Handler(ctx *context.Context) {
 			beego.Error("Reload Create Captcha Error:", err)
 			return
 		}
+	} else {
+		if v, ok := c.store.Get(key).([]byte); ok {
+			chars = v
+		} else {
+			ctx.Output.SetStatus(404)
+			ctx.WriteString("captcha not found")
+			return
+		}
 	}
 
 	img := NewImage(chars, c.StdWidth, c.StdHeight)