From eec26580c988873b72a37a50dfb32547de8e624a Mon Sep 17 00:00:00 2001
From: "yadong.zhang" <yadong.zhang0415@gmail.com>
Date: Tue, 30 Jul 2019 21:26:54 +0800
Subject: [PATCH] =?UTF-8?q?:ambulance:=20=E4=BC=98=E5=8C=96=E4=BB=A3?=
 =?UTF-8?q?=E7=A0=81?=
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---
 src/main/java/me/zhyd/oauth/utils/AuthChecker.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/me/zhyd/oauth/utils/AuthChecker.java b/src/main/java/me/zhyd/oauth/utils/AuthChecker.java
index d5e22f4..b5942c1 100644
--- a/src/main/java/me/zhyd/oauth/utils/AuthChecker.java
+++ b/src/main/java/me/zhyd/oauth/utils/AuthChecker.java
@@ -69,9 +69,11 @@ public class AuthChecker {
 
     /**
      * 校验回调传回的state
+     *
+     * @param state {@code state}一定不为空
      */
     public static void checkState(String state) {
-        if (!AuthStateCache.containsKey(state)) {
+        if (StringUtils.isEmpty(state) || !AuthStateCache.containsKey(state)) {
             throw new AuthException(AuthResponseStatus.ILLEGAL_REQUEST);
         }
     }
-- 
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