数据库连接

[sql]代码库

ackage com.java1234.util;
 
import java.sql.Connection;
import java.sql.DriverManager;
 
public class DbUtil {
 
    private String dbUrl="jdbc:mysql://localhost:3306/db_studentInfo?characterEncoding=utf8";
    private String dbUserName="root";
    private String dbPassword="root";
    private String jdbcName="com.mysql.jdbc.Driver";
     
    /**
     * 获取数据库连接
     * @return
     * @throws Exception
     */
    public Connection getCon() throws Exception{
        Class.forName(jdbcName);
        Connection con=DriverManager.getConnection(dbUrl,dbUserName,dbPassword);
        return con;
    }
     
    /**
     * 关闭数据库连接
     * @param con
     * @throws Exception
     */
    public void closeCon(Connection con) throws Exception{
        if(con!=null){
            con.close();
        }
    }
     
    public static void main(String[] args) {
        DbUtil dbUtil=new DbUtil();
        try {
            dbUtil.getCon();
            System.out.println("数据库连接成功");
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}