java - 无法加载驱动程序 java.sql.SQLException : No suitable driver found for jdbc

Question

我在连接我的 java 和 mysql 数据库时遇到问题，昨天工作正常，但现在不工作，这是我的代码。

public static void main(String[] args) {


    try 
    {
        Class.forName ("com.mysql.jdbc.Driver");
    }
    catch (ClassNotFoundException e)
    {
        System.out.println ("Could not load the driver");
    }

    String user, pass, host, database;
    user = "Michael";
    pass = "Blaine22";
    host = "localhost";
    database = "maintenance_work";

    Connection conn = DriverManager.getConnection
            ("jdbc:mysql://"+host+":3306/"+database, user, pass);

    conn.setAutoCommit(false);


    //Menu code:
    appSchoolMaintenance newWork = new appSchoolMaintenance();
    newWork.statement1(); // opens the start method


}

Answer 1

将 MySQL JDBC 驱动程序(您可以在此处获取:http://dev.mysql.com/downloads/connector/j/)添加到应用程序的类路径并删除不必要的代码段:

    try 
    {
        Class.forName ("com.mysql.jdbc.Driver");
    }
    catch (ClassNotFoundException e)
    {
        System.out.println ("Could not load the driver");
    }