Merge branch 'v4' of http://git.ycjcjy.com/welcome/service-welcome3 into v4

src/main/resources/application.yml

 #    url: jdbc:mysql://rm-uf6z3z6jq11x653d77o.mysql.rds.aliyuncs.com:3306/welcome3?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true&serverTimezone=GMT%2B8
 #    username: welcome
 #    password: s190QU2#z%hdU%^FPkY9qjls
-    url: jdbc:mysql://47.101.36.130:3306/welcome3?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true&serverTimezone=GMT%2B8
+    url: jdbc:mysql://47.101.36.130:3306/welcome3?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true&serverTimezone=GMT%2B8&zeroDateTimeBehavior=convertToNull
     username: root
     password: Wt4q*/9}i00q@0a4jM{z6O#h129@F/
   servlet: