问题遇到的现象和发生背景
问题相关代码,请勿粘贴截图
public void del_stu() {
JFrame jf = new JFrame("宿舍信息删除------>");
JLabel jl1 = new JLabel("学生姓名:");
JTextField jt1 = new JTextField("",10);
JLabel jl2 = new JLabel("学生学号:");
JTextField jt2 = new JTextField("",15);
JButton jb1 = new JButton("删除");
jf.setLayout(new FlowLayout(FlowLayout.CENTER));
String stuname = jt1.getText();
String stuid = jt2.getText();
jb1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
Class.forName("com.mysql.cj.jdbc.Driver");//加载mysql驱动
String URL = "jdbc:mysql://localhost:3306/dor_information?&useSSL=false&serverTimezone=UTC&serverTimezone=GMT%2B8";
Connection connection = Connect.getConnection();
Statement statement = connection.createStatement();
String sql = "delete from dor_stu where 学号 =? ";
PreparedStatement pstmt = connection.prepareStatement(sql);
pstmt.setString(1, stuid);
pstmt.executeUpdate();
ResultSet rs = statement.executeQuery("select *from dor_stu");
while(rs.next()) {
if(!rs.getString(2).equals(stuid)) {
System.out.println("删除成功");
}
}
}catch(Exception e1) {
e1.printStackTrace();
}
}
});
运行结果及报错内容
这里报的是删除成功
我的解答思路和尝试过的方法
我想要达到的结果
数据库能够删除该数据就可以了
1.