小编Mar*_*ius的帖子

我有 2 列，“create_time”是帐户注册的时间，“last_play”是帐户上次登录的时间。我想选择在特定周/月注册并在该特定周/月的最后 2 天内处于活动状态的帐户。

以下是我在不考虑 last_play（作品）的情况下选择上周所有条目的方法：

SELECT COUNT(id) FROM account.account 
WHERE WEEKOFYEAR(create_time) = WEEKOFYEAR(NOW()) - 1 
AND YEAR(create_time) = YEAR(NOW());

这是我上周的当前查询，但不起作用：

SELECT COUNT(id) FROM account.account 
WHERE WEEKOFYEAR(create_time) = WEEKOFYEAR(NOW()) - 1 
AND YEAR(create_time) = YEAR(NOW()) 
AND DATE(last_play) BETWEEN 
    ADDDATE(DATE(DATE_SUB(NOW(), INTERVAL 1 WEEK)), 
    INTERVAL 1 - DAYOFWEEK(DATE(NOW())) DAY) 
    AND DATE(NOW());

我正在尝试显示一个带有图像的JButton,但我无法弄清楚如何让Mousehover在这方面工作.图像的正常显示是有效的,很难.如果按钮上绘制的文本可以居中,那也很好.

import java.awt.*;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;

public class ImageButtonTest {

    private static JButton imageButton;

    public static void main(String[] args) throws IOException {
        JFrame frm = new JFrame();
        frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frm.setSize(90, 27);
        frm.setLocation(50, 50);
        Image image = ImageIO.read(new URL("http://i.imgur.com/bitgM6l.png"));
        Image imageHover = ImageIO.read(new URL("http://i.imgur.com/dt81BWk.png"));
        imageButton = new ImageButton(image, imageHover);
        imageButton.setText("Download");
        frm.add(imageButton);
        frm.pack();
        frm.setVisible(true);
    }

    static class ImageButton extends JButton {
        private Image image, imageHover;
        private boolean hover;

        ImageButton(Image image, Image imageHover) {
            this.image = image; …