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连接数据库
package vertxTest;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class Conn {
/**
* @method getConn()
* @return Connection
*/
public Connection getConn() {
String driver = "org.postgresql.Driver";
String url = "jdbc:postgresql://localhost:5432/superpower";
String username = "postgres";
String password = "123456";
Connection conn = null;
try {
Class.forName(driver); //
conn = (Connection) DriverManager.getConnection(url, username, password);
System.out.println("数据库连接成功");
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
public static void main(String[] args){
Conn c=new Conn();
c.getConn();
}
}