https://blog.csdn.net/huwentao0305/article/details/53378755
Save the code to verify that you can connect to MySQL
Recorded the login password 123456789 (!!! I forgot it at the beginning, I happened to try it right
import java.sql.*;
public class SqlConnection {
//here is the SqlConnection class
/*
*java connects to mysql database
*1. Load the driver
*2. The database connection string "jdbc:mysql://localhost:3306/database name?"
*3. Database login name
*3. Database login password
*/
private static final String URL="jdbc:mysql://localhost:3306/test1?";//Database connection string, where deom is the database name
private static final String NAME="root";//Login name
private static final String PASSWORD="123456789";//密码
public void TheSqlConnection()
{
//1. Load the driver
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
System.out.println("Failed to load the driver successfully, please check whether to import the driver!");
//Add a println, if the driver is loaded abnormally, check whether the driver is added, or whether the driver string is incorrectly added
e.printStackTrace ();
}
Connection conn = null;
try {
conn = DriverManager.getConnection(URL, NAME, PASSWORD);
System.out.println("Get database connection successfully!");
} catch (SQLException e) {
System.out.println("Failed to get database connection!");
//Add a println, if the connection fails, check whether the connection string or login name and password are wrong
e.printStackTrace ();
}
// The database will be closed after opening
if(conn!=null)
{
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace ();
conn=null;
}
}
}
}
public class MainCalss {
public static void main(String[] args) {
// TODO auto-generated method stub
new SqlConnection().TheSqlConnection();
}
}