jdbc简单的操作流程（四）删除

 public static void main(String[] args) {
        Connection conn=null;
        PreparedStatement ps=null;
        try {
            //加载驱动
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            //获取链接
            conn=DriverManager.getConnection("jdbc:sqlserver://localhost;database=studb", "sa", "123456");
            //删除
            //编写sql语句
            String sql = "delete from stu where id=?";
            //获取PreparedStatement对象
            ps=conn.prepareStatement(sql);
            //给?赋值
            ps.setInt(1, 2);
            //执行
            int i=ps.executeUpdate();
            if(i>0){
                System.out.println("成功");
            }else{
                System.out.println("失败");
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally{
            //关闭链接
            try {
                ps.close();
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

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