连接到MySQL数据库

Question

如何从Java连接到MySQL数据库？当数据库位于远程服务器上时,Java在本地计算机上运行.

Answer 1

此示例使用MySQL的MM JDBC驱动程序连接到MySQL数据库:

Connection connection = null;

try {
    // Load the JDBC driver
    String driverName = "com.mysql.jdbc.Driver"; // MySQL MM JDBC driver
    Class.forName(driverName);

    // Create a connection to the database
    String serverName = "localhost";
    String mydatabase = "mydatabase";
    String url = "jdbc:mysql://" + serverName +  "/" + mydatabase; // a JDBC url
    String username = "username";
    String password = "password";
    connection = DriverManager.getConnection(url, username, password);
} catch (ClassNotFoundException e) {
    // Could not find the database driver
} catch (SQLException e) {
    // Could not connect to the database
}

您需要在MySQL数据库中拥有一个帐户才能运行此示例.要创建帐户,您可以以root用户身份连接到平台上的MySQL数据库,并运行以下命令:

mysql> GRANT SELECT, INSERT, UPDATE, DELETE PRIVILEGES ON *.* 
       TO username@localhost IDENTIFIED BY 'password' WITH GRANT OPTION;