第一个 com.thoughtworks.xstream.converters.ConversionException: Cannot construct ClassXXX as it does not have a no-args constructor : Cannot construct yourpackage.yourclass as it does not have a no-args constructor 搜了一下才发现是版本的问题: 我用的是JDK7+XStream1.3.1 你
MySQL5.6版本备份报错,密码不安全 [root@centos199 mysql]# mysqldump -uroot -ppassword cz-office > mysql38.sqlWarning: Using a password on the command line interface can be insecure. 解决方法1:进行交互式输入密码, [root@centos199 mysql]# mysqldump -uroot -p cz-office > mysql38
报错信息如下: count(): Parameter must be an array or an object that implements Countable (View: D:\fookusystem\resources\views\business_product\index.blade.php) php7.1以上版本,count()函数中的参数必须是数组或者对象