Caused by: java.lang.IllegalArgumentException: When allowCredentials is true,allowedOrigins cannot contain the special value "*" since that cannot be set on the"Access-Control-Allow-Origin" response h

mysql: Character set 'utf8' is not a compiled character set and is not specified in the 'C:\Program Files\MySQL\MySQL Server 5.7\share\charsets\Index.xml' file

kettle-连接mysql数据库

Error connecting to database: (using class oracle.jdbc.driver.OracleDriver)Listener refused the connection with the following error:ORA-12505, TNS:listener does not currently know of SID given in conn

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could

错误产生环境Vue中使用计算属性时产生错误描述vue.js:634 [Vue warn]: The computed property "total" is already defined in data.(found in <Root>)错误原因计算属性和data数据模型中的某个变量重名了界面办法要么改计算属性名，要么改data数据模型中重名的变量...

kettle-连接mysql数据库

Error connecting to database: (using class oracle.jdbc.driver.OracleDriver)Listener refused the connection with the following error:ORA-12505, TNS:listener does not currently know of SID given in conn

目录步骤1. 选择 Edit Configurations步骤2. 点击modify options步骤3.点步骤4.步骤5.步骤1. 选择 Edit Configurations步骤2. 点击modify options步骤3.点步骤4.步骤5.

步骤一：删除之前的mysql残留如果你之前有安装过mysql请先阅读一下这篇文章: 卸载清理如果是第一次安装mysql请从步骤二开始阅读步骤二：升级一下系统版本和内核版本因为的的CentOS从官网下载的，可能比较老，安装其他软件的时候总是出现一些奇怪的问题，所以推荐升级。执行命令yum -y update稍微等待一下就好步骤三：下载并安装MySQL官方的 Yum Repositorywget -i