When we connect application with database using "localhost:port" connection string, our application works fine. However, when we change it to use "ip address:host", application works fine in beginning but after idling for say 5 minutes, is not able to fetch data from database and results ...
Step1:App.config文件里进行配置 <?xml version="1.0"encoding="utf-8"?> <configuration> <startup> <supportedRuntime version="v4.0"sku=".NETFramework,Version=v4.5.2"/> </startup><connectionStrings> <add name="Connect" connectionString="server=localhost;user=root;pwd=admin;database=BlackCat"/...
Connection con; String driver= "com.mysql.jdbc.Driver"; //导入驱动 String url= "jdbc:mysql://localhost:3306/hospital"; //连接到数据库,端口号为3306,库名称为hospital String user= "root";//库管理员为Root String password= "699307";//设置的密码 Connection conn=null;try{ Class.forName(driver...
<add name="connstring" connectionString="User Id=root;host=localhost;Database=cnseb_spider;password=;port=3306;persist security info=True;character set=utf8;" providerName="MySql.Data.MySqlClient"/> </connectionStrings> 1. 2. 3. 5. mysql操作类,可以直接使用,已经测试过了 #region 数据库连接字...
public static void main(String[] args) { String url = "jdbc//localhost:3306/test"; String username = "root"; String password = "password"; try { // 加载驱动程序 Class.forName("com.mysql.cj.jdbc.Driver"); // 创建连接对象 Connection conn = DriverManager.getConnection(url, username, passw...
或者update user set authentication_string='新密码' where user='root'; 或者alter user 'root'@'localhost' identified with mysql_native_password by '新密码'; ### 注意:刷新mysql相关权限 flush privileges; ### 最终流程: mysql> update user set authentication_string='root' where user='root'; Quer...
importjava.sql.*;publicclassMySQLConnectionExample{publicstaticvoidmain(String[]args){Stringhost="localhost";intport=3306;Stringdatabase="mydatabase";Stringusername="root";Stringpassword="password";StringconnectionString="jdbc:mysql://"+host+":"+port+"/"+database+"?user="+username+"&password="...
// classic protocol example "server=10.10.10.10:3306,192.101.10.2:3305,localhost:3306;uid=test;password=xxxx" // X Protocol example mysqlx://test:test@[192.1.10.10:3305,127.0.0.1:3306] An updated failover approach selects the target for connection first by priority order, if provided, or ...
serverName = "localhost" ' MySQL服务器地址 dbName = "mydatabase" ' 数据库名称 userName = "myuser" ' 数据库用户名 password = "mypassword" ' 数据库密码 ' 构建连接字符串 conn.ConnectionString = "DRIVER={MySQL ODBC 5.3 ANSI Driver};" & _ ...
String connectionString = "jdbc:mysql://localhost:3306/my_database?user=root&password=Pass&...