..

mooctest-user-server/src/main/java/cn/iselab/mooctest/user/configure/WechatConfiguration.java

@@ -42,7 +42,7 @@ public class WechatConfiguration {
     }
 
     public Token getToken(String code) {
-        if (appId != null && appSecret != null) {
+        if (appId != null && appSecret != null && token!=null) {
             token = WechatUtil.getToken(appId, appSecret, code);
         }
         return token;