java - 从 MySQL 数据库获取日期对象并将其显示在格式化文本字段上

Question

我正在尝试从数据库中获取出生日期并将其显示在 JFormattedTextField 上。它应该以 mm/dd/yyyy 格式显示，但存储为 yyyy/dd/mm 格式。我该怎么办呢？患者出生日期存储为 java.sql.Date

    JLabel lbl3 = new JLabel("Date of Birth:");
    lbl3.setBounds(17, 129, 90, 22);
    lbl3.setForeground(Color.WHITE);
    lbl3.setFont(new Font("Microsoft New Tai Lue", Font.PLAIN, 16));

    JFormattedTextField formattedDob = new JFormattedTextField();
    formattedDob.setEditable(false);
    formattedDob.setText("//");
    formattedDob.setBounds(201, 128, 183, 22);
    contentPane.add(formattedDob);  

JButton btnSearchPatient = new JButton("Search");
        btnSearchPatient.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                PatientSQL searchPatient = new PatientSQL();
                Patient staff = searchPatient.getBySSN(patient.getSsn());

            txtAddress1.setText(staff.getAddress1());
            txtAddress2.setText(staff.getAddress2());
            txtCity.setText(staff.getCity());
        }
    });

这是我的PatientSQL.java供引用(为了便于阅读，删除了不相关的代码，例如包和函数):

public class PatientSQL {
    private SessionFactory factory;

    public PatientSQL() {
        try {
            factory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            System.err.println("Failed to create sessionFactory object." + ex);

            throw new ExceptionInInitializerError(ex);
        }
    }

    /* Method to CREATE a patient in the database */
    public void add(String fname, String lname, String ssn, java.sql.Date dob, String phoneNo, String address1, String address2, String city, String zipcode, String allergy1, String allergy2, String allergy3, String photo) {
        Patient patient = new Patient(fname, lname, ssn, dob, phoneNo, address1, address2, city, zipcode, allergy1, allergy2, allergy3, photo);

        add(patient);
    }

    public Patient getBySSN(String ssn) {
        Session session = factory.openSession();
        Patient patient = null;

        try {
            patient = (Patient) session.get(Patient.class, ssn);

        } catch (HibernateException e) {
            System.err.println("Can not find patient ssn: " + ssn);
        } finally {
            session.close();
        }

        return patient;
    }

}

Answer 1

也许你应该尝试转换日期:使用 LocalDateTime#parse() (如果字符串恰好包含时区部分，则使用 ZonedDateTime#parse() )将特定模式的字符串解析为 LocalDateTime。像:

String date_s = "2011/01/18"; 
SimpleDateFormat dt = new SimpleDateFormat("yyyy/dd/mm"); 
Date date = dt.parse(date_s); 
SimpleDateFormat dt1 = new SimpleDateFormat("mm/dd/yyyy");
System.out.println(dt1.format(date));