java - 如何输入日期和时间格式

Question

我坚持在两种字段中进行提交，这些字段获取表单( View )上的用户输入并插入到数据库中，我已经尝试在网上搜索和查找一些内容以及我所知道的所有内容看到的是自动从电脑插入日期和时间的代码，但我想要的是插入用户输入的数据，我正在尝试这样做:

调用模型类:

package br.com.jdbc.victor.model;

import java.sql.Date;
import java.sql.Time;

/**
 *
 * @author Victor
 */
public class Call {
    private Long callId;
    private String priority;
    private int priorityId;
    private Long priorityDetailId;
    private Date initialDate, finalDate;
    private Time initialTime, finalTime;
    
    
    public Call(String priority, int priorityId, Date initialDate, Time initialTime, Time finalTime) {
        this.priority = priority;
        this.priorityId = priorityId;
        this.initialDate = initialDate;
        this.initialTime = initialTime;
        this.finalTime = finalTime;
    }

    public Call(String priority, Long priorityDetailId) {
        this.priority = priority;
        this.priorityDetailId = priorityDetailId;
    }
    
    public Call(int priorityId, Long callId){
        this.priorityId = priorityId;
        this.callId = callId;
    }
    
    public Call(){
       this.priority = getPriority();
       this.priorityId = getPriorityId();
       this.initialDate = getInitialDate();
       this.initialTime = getInitialTime();
       this.finalTime = getFinalTime();
       //this.initialDate = new Date();
       //this.initialTime = new Time();
       //this.finalTime = new Time();
    }
    

/* Getters and Setters.... */

}

MySQLCallDAO DAO 类:

package br.com.jdbc.victor.dao.daoentities;

import br.com.jdbc.dao.DAOException;
import br.com.jdbc.victor.controller.CallDAO;
import br.com.jdbc.victor.model.Call;
import br.com.jdbc.victor.model.PriorityDetail;
import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Time;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Victor
 */
public abstract class MySQLCallDAO implements CallDAO {
    
    final String INSERT = "INSERT INTO calls (priority, priorityNum, initialDate, initialTime, finalTime) VALUES (?,?,?,?,?)";
    final String GETALL = "SELECT * FROM calls";
    final String GETID  = "SELECT callId FROM calls ORDER BY callId DESC LIMIT 1";
    final String ORDER = GETALL + " ORDER BY priorityNum, callId";
   
    
    //SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
    //SimpleDateFormat stf = new SimpleDateFormat("HH:mm");
    private Connection con;
    private PreparedStatement pstm;
    private Statement stm = null;
    private ResultSet rs = null;
    
    
    public MySQLCallDAO(Connection con) {
        this.con = con;
    }
    
    @Override
    public void insert(Call o) throws DAOException {
        
        try{
           pstm = con.prepareStatement(INSERT);
           pstm.setString(1, o.getPriority());
           pstm.setInt(2, o.getPriorityId());
           pstm.setDate(3, new java.sql.Date(o.getInitialDate().getTime()));
           pstm.setTime(4, new Time(o.getInitialTime().getTime()));
           pstm.setTime(5, new Time(o.getFinalTime().getTime())); 
            
           if(pstm.executeUpdate() == 0 ){
              throw new DAOException("The update can't be saved");
           }  
        } catch (SQLException ex) {
            //throw new DAOException("SQL ERROR");
            ex.printStackTrace();
        } finally {
           if(pstm != null){
               try {
                   pstm.close();
               } catch (SQLException ex) {
                   throw new DAOException("Error to close the connection", ex);
               }
           }
        }
    }

FormNewCall View 类:

private void btSubmitActionPerformed(java.awt.event.ActionEvent evt) {                                           
        try {                                           
            Call call = new Call();
            MySQLDaoManager man = new MySQLDaoManager("root", "", "localhost", "attendances", 3306);  
            //java.util.Date date_util = new java.util.Date();
            //java.sql.Date date_sql = new java.sql.Date(date_util.getDate());
            //java.sql.Time time_sql = new java.sql.Time(date_util.getTime());
            
            try {
                call.setPriority(cbPriorityDetail.getSelectedItem().toString());
                call.setPriorityNum(Integer.parseInt(tfPriorityDetailId.getText()));
                tfInitialDate.commitEdit();
       /* The line that gives error under */
                call.setInitialDate((Date) tfInitialDate.getValue());
                call.setInitialTime(Time.valueOf(tfInitialTime.getText()));
                call.setFinalTime(Time.valueOf(tfFinalTime.getText()));
                
                man.getCallDAO().insert(call);
                
                if(tfCallId.getText().length() != 0){
                     call.setCallId(Long.parseLong(tfCallId.getText()));
                     man.getCallDAO().update(call);
                }
                if(tfInitialDate.getValue() != null && tfInitialTime.getValue() != null && tfFinalTime.getValue() != null){
                    JOptionPane.showMessageDialog(rootPane, "User Inserted!", "Insert Successful", JOptionPane.INFORMATION_MESSAGE);
                    btNewActionPerformed(evt);
                } else {
                    JOptionPane.showMessageDialog(rootPane, "Please, fill the fields again", "Insert not sucessful", JOptionPane.INFORMATION_MESSAGE);
                    btNewActionPerformed(evt);
                }
            } catch (DAOException ex) {
                JOptionPane.showMessageDialog(rootPane, "MySQL Error", "Error", JOptionPane.ERROR_MESSAGE);
            } catch (ParseException ex) {                Logger.getLogger(FormNewCall.class.getName()).log(Level.SEVERE, null, ex);
            }
        } catch (SQLException ex) {
            JOptionPane.showMessageDialog(rootPane, "Error to make connection", "Error", JOptionPane.ERROR_MESSAGE);
        }
    }             

所以我已经尝试了所有方法，但堆栈跟踪异常:

run:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.util.Date cannot be cast to java.sql.Date
	at br.com.jdbc.victor.view.FormNewCall.btSubmitActionPerformed(FormNewCall.java:360)
	at br.com.jdbc.victor.view.FormNewCall.access$500(FormNewCall.java:30)
	at br.com.jdbc.victor.view.FormNewCall$6.actionPerformed(FormNewCall.java:152)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
	at java.awt.Component.processMouseEvent(Component.java:6533)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
	at java.awt.Component.processEvent(Component.java:6298)
	at java.awt.Container.processEvent(Container.java:2236)
	at java.awt.Component.dispatchEventImpl(Component.java:4889)
	at java.awt.Container.dispatchEventImpl(Container.java:2294)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
	at java.awt.Container.dispatchEventImpl(Container.java:2280)
	at java.awt.Window.dispatchEventImpl(Window.java:2746)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.awt.EventQueue$4.run(EventQueue.java:729)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:109)
	at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:184)
	at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:229)
	at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:227)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:227)
	at java.awt.Dialog.show(Dialog.java:1084)
	at java.awt.Component.show(Component.java:1671)
	at java.awt.Component.setVisible(Component.java:1623)
	at java.awt.Window.setVisible(Window.java:1014)
	at java.awt.Dialog.setVisible(Dialog.java:1005)
	at br.com.jdbc.victor.view.FormNewCall.lambda$main$0(FormNewCall.java:521)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

我想知道如何编写代码以允许用户在数据库中输入日期和时间？!非常感谢!!

Answer 1

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: 
    java.util.Date cannot be cast to java.sql.Date

    at br.com.jdbc.victor.view.FormNewCall.btSubmitActionPerformed(FormNewCall.java:360)

这可能意味着在 FormNewCall 类的顶部有类似 import java.sql.Date 和 tfInitialDate.getValue() 返回 java.util.Date，它们是不同的类，并且它们在这种方式上不兼容。

解决此问题的最简单方法是在其中添加适当的转换。

call.setInitialDate(new java.sql.Date(tfInitialDate.getValue().getTime()));

也许您甚至可以省略 java.sql. 包说明符，因为它已经在您的导入中。

更新它实际上变成了以下内容，因为返回类型是getValue()上的对象

call.setInitialDate(new java.sql.Date(((java.util.Date)tfInitialDate.getValue()).getTime()));