JAVA连接PostgreSQL数据库

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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();

    }


}

所需Jar包