1.Mysql和可视化工具的安装
安装包网上有很多资源。这里推荐一个我一直在用的学习网站,上面有提供安装包和详细的说明。
http://how2j.cn/k/mysql/mysql-install/377.html
2.JDBC的使用+简单的增删改查
首先要导入一个jar包。
下载地址:
http://how2j.cn/frontdownload?bean.id=224
import com.mysql.jdbc.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class JDBC { public static void main(String[] args) { Statement statement = null; Connection connection = null; try { //固定写法 Class.forName("com.mysql.jdbc.Driver"); //连接Mysql(how2java是数据库名称,root是mysql的账号,admin是密码) connection = (Connection) DriverManager.getConnection("jdbc:mysql://127.0.0.1/how2java?characterEncoding=UTF-8", "root", "admin"); System.out.println("数据库连接成功!" + connection); //创建Statement,用于执行SQL语句 statement = connection.createStatement(); System.out.println("获取Statement对象" + statement); //执行一条SQL语句 //增删改都可以调用这个方法。只是SQL语句变一下 String sql = "insert into hero values(null," + "‘剑圣‘" + "," + 415.0f + "," + 100 + ")"; statement.execute(sql); System.out.println("插入成功!"); //执行SQL查询功能 String sql2 = "select * from hero"; // 执行查询语句,并把结果集返回给ResultSet ResultSet rs = statement.executeQuery(sql); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (SQLException e) { e.printStackTrace(); } finally { //最后,先关闭statement,再关闭连接 if (statement != null) { try { statement.close(); } catch (SQLException e) { e.printStackTrace(); } } if (connection != null) { try { connection.close(); } catch (SQLException e) { e.printStackTrace(); } } } } }
原文地址:https://www.cnblogs.com/lbhym/p/11675599.html
时间: 2024-11-05 01:14:34