My DB Day model has fields: timestamp such as id, description, content, steps, mainImage. The constructor is empty with default values ​​if there is no such timestamp in the database. "non-empty" if timestamp is in BD, getters/setters. There is a view full_day.html with info and an Edit Day button. When clicked Edit, a modal window opens with a form for changing the day using the "Save" button.

我的DB Day模型有一些字段：时间戳，如id、Description、Content、Steps、mainImage。如果数据库中没有这样的时间戳，则构造函数为空，默认为​​。如果时间戳在BD中，则为非空，则为getters/setters。有一个带有信息的Full_Day.html视图和一个编辑Day按钮。当点击编辑时，一个模式窗口打开，其中有一个表单，可以使用“保存”按钮更改日期。

In short, I want my user to add an image to a form (and some other things) and the image file goes to the /static/images/ and the file name goes to the MySQL Table. What are the ideas to do?

简而言之，我希望我的用户将一个图像添加到一个表单(以及其他一些内容)中，图像文件转到/Static/Images/，文件名转到MySQL表。有什么想法可以做吗？

(It is the details of the info I described above)

(这是我上面描述的信息的详细信息)

CalendarController.java:

CalendarController.java：

// Other methods
@GetMapping("/{year}/{month}/{dayNumber}")
public String day(Model model,
                  @PathVariable int year,
                  @PathVariable String month,
                  @PathVariable int dayNumber) {

    long timestamp = convertToDateTimestamp(year, month, dayNumber);

    Optional<Day> gotDay = dayRepository.findById(timestamp);
    ArrayList<Day> currentDay = new ArrayList<>();

    gotDay.ifPresent(currentDay::add);

    model.addAttribute("gotDay", gotDay);
    model.addAttribute("currentDay", currentDay);
    model.addAttribute("year", year);
    model.addAttribute("month", month);
    model.addAttribute("dayNumber", dayNumber);
    return "full_day";
}

@PostMapping("/{year}/{month}/{dayNumber}")
public String saveDay(Model model,
                      @ModelAttribute("gotDay") Day currentDay,
                      @PathVariable int year,
                      @PathVariable String month,
                      @PathVariable int dayNumber
) {

    currentDay.setTimestamp(convertToDateTimestamp(year, month, dayNumber));
    dayRepository.save(currentDay);

    return "redirect:/calendar/" + year + "/" + month + "/" + dayNumber;
}

Day.java:

Day.java：

@Entity
@Table(schema = "memoryfulday", name = "memoryful")
public class Day {
    @Id
    private Long timestamp;
    private String description, content;
    private int steps;
    private String mainImage;
//    private MultipartFile mainImage;

    public Day(Long timestamp) {
        this.timestamp = timestamp;
        this.mainImage = "NoPhoto.png";
        this.description = "No brief description";
        this.steps = 0;
        this.content = "No content";
    }

    public Day(Long timestamp, String mainImage, String description, String content, int steps) {
        this.timestamp = timestamp;
        this.mainImage = mainImage;
        this.description = description;
        this.content = content;
        this.steps = steps;
    }

    // toString()
    // getters/setters
}

full_day.html:

Full_Day.html：

<!-- some code -->
<div id="edit-modal" class="edit-modal">
    <div class="edit-content">
        <span class="close">&times;</span>
        <h2>Edit Day Window</h2>

        <form method="post" th:object="${gotDay}">
            <label for="steps">Daily steps</label>
            <input value="${day.steps}" th:field="*{steps}" id="steps" type="number" tabindex="1" placeholder="10000">

            <label for="description">Description</label>
            <input value="${day.description}" th:field="*{description}" id="description" type="text" tabindex="2" placeholder="Enter day's description">

            <label for="content">Content</label>
            <textarea th:text="${day.content}" th:field="*{content}" id="content" tabindex="3" placeholder="Enter day's content"></textarea>
            <input type="submit" tabindex="4" class="left-right" id="editSubmit" value="Save">
        </form>
    </div>
</div>

// some js to interract with modal window

I watched videos, searched info in websites, but I didn't find what I wanted. I tried some code that ChatGPT wrote for me, but it couldn't help me.

我看了视频，在网站上搜索信息，但我没有找到我想要的。我尝试了一些ChatGPT为我编写的代码，但它不能帮助我。