我是java和spring的新手，我正在尝试创建一个简单的post表单。模板如下所示：

<form action="#" th:action="@{/notes}" method="POST">
  <input type="hidden" name="noteId" id="note-id">
  <div class="form-group">
    <label for="note-title" class="col-form-label">Title</label>
    <input type="text" name= "noteTitle" class="form-control" id="note-title" maxlength="20" required>
  </div>
  <div class="form-group">
    <label for="note-description" class="col-form-label">Description</label>
    <textarea class="form-control" name="noteDescription" id="note-description" rows="5" maxlength="1000" required></textarea>
  </div>
  <button id="noteSubmit" type="submit" class="d-none"></button>
</form>

这是此post端点的控制器：

@PostMapping("/notes")
    public String postNote(@ModelAttribute Note note, Authentication authentication, Model model) throws IOException {
        User user = this.userService.getUser(authentication.getName());
        Integer userid = user.getUserId();
        noteService.createNote(note, userid);
        model.addAttribute("success",true);
        model.addAttribute("message","New note added successfully!");
        return "result";
    }

noteservice createnote方法如下所示：

public int createNote(Note note, Integer userid) {
    return noteMapper.insert(new Note(null, note.getNotetitle(), note.getNotedescription(), userid));
}

Map绘制程序如下所示：

@Insert("INSERT INTO CREDENTIALS (notetitle, notedescription, userid) VALUES(#{filename}, #{notetitle}, #{notedescription}, #{userid})")
@Options(useGeneratedKeys = true, keyProperty = "noteid")
int insert(Note note);

这是模型：

public class Note {
    private Integer noteid;
    private String notetitle;
    private String notedescription;
    private Integer userid;

    public Note(Integer noteid, String notetitle, String notedescription, Integer userid) {
        this.noteid = noteid;
        this.notetitle = notetitle;
        this.notedescription = notedescription;
        this.userid = userid;
    }

    public Integer getNoteid() {
        return noteid;
    }

    public void setNoteid(Integer fileId) {
        this.noteid = noteid;
    }

    public String getNotetitle() {
        return notetitle;
    }

    public void setNotetitle(String filename) {
        this.notetitle = notetitle;
    }

    public String getNotedescription() {
        return notedescription;
    }

    public void setNotedescription(String notedescription) {
        this.notedescription = notedescription;
    }

    public Integer getUserid() {
        return userid;
    }

    public void setUserid(Integer userid) { this.userid = userid; }
}

这是sql模式：

CREATE TABLE IF NOT EXISTS NOTES (
    noteid INT PRIMARY KEY auto_increment,
    notetitle VARCHAR(20),
    notedescription VARCHAR (1000),
    userid INT,
    foreign key (userid) references USERS(userid)
);

当我试图发布便条时，出现了一个错误：
出现意外错误（类型=未找到，状态=404）。无可用消息
当我在调试模式下运行它时，它甚至不能到达控制器。我做错什么了？这是回购。