如何输入日期和时间格式答案

【问题标题】：How to input Date and Time format如何输入日期和时间格式
【发布时间】：2016-10-22 07:47:56
【问题描述】：

我坚持在两种字段中进行提交，这些字段在表单（视图）上获取用户输入并在数据库中插入，我已经尝试在网上搜索并找到一些东西以及我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键入的数据，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 视图类：

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)

我想知道任何提示来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！！

【问题讨论】：

为什么不使用 java.util.Date 为什么使用 java.sql.date？有什么特殊需要吗？
请具体说明此异常发生的位置：发布完整的堆栈跟踪并指出异常的位置。我们不会筛选一堵代码墙来找出您尝试将java.util.Date 转换为java.sql.Date 的位置。
@JONIVar 由于他正在使用 JDBC，他最终将需要一个java.sql.Date（或者可能是一个java.sql.Timestamp）。
我现在已经编辑了我的问题，将整个代码翻译成英文，并且我已经更正了询问的方式，我认为我不清楚...... @MarkRotteveel 异常发生在这一行: call.setInitialDate((Date) tfInitialDate.getValue());上面的所有其他行都可以很好地插入，我已经在 try 块之前处理了那些注释行，但我等不及选择系统日期和时间
我试图纠正以这种方式给出错误的行： call.setInitialDate(Date.valueOf(tfInitialDate.getText()));但是错误仍然存在，这次给出了这个堆栈跟踪： br.com.jdbc 的 java.sql.Date.valueOf(Date.java:143) 线程“AWT-EventQueue-0”java.lang.IllegalArgumentException 中的异常.victor.view.FormNewCall.btSubmitActionPerformed(FormNewCall.java:359) 在 br.com.jdbc.victor.view.FormNewCall.access$500(FormNewCall.java:30) 在 br.com.jdbc.victor.view.FormNewCall$6 .actionPerformed(FormNewCall.java:152)

标签： java date jdbc time crud

【解决方案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)

这可能意味着在您的 FormNewCall 类的顶部，您有类似 import java.sql.Date 和 tfInitialDate.getValue() 返回 java.util.Date 的东西，它们是不同的类，它们不以这种方式兼容。

解决此问题的最简单方法是在此处添加适当的转换。

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

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，因为返回类型是getValue()上的对象

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

【讨论】：

我已经尝试过了，但我无法插入 getTime() 方法，这里给出了“找不到符号”，并且左 ctrl + 空格键没有列出.. 做你知道我该怎么做才能调用这个方法吗？！
getValue() 之后的getTime() 方法。
@VictorG。 getValue() 方法的返回类型是什么？（请提供完整的包名）
*package javax.swing public class JFormattedTextField extends JTextField { private class FocusLostHandler implements Runnable, Serializable { public Object getValue() { // 编译代码 } }
这个我认为我以前从未知道过，我在努力解决这个问题...终于成功了，非常感谢 Ivan！ :D

【解决方案2】：

无法识别代码有什么问题。

您不应该使用date_util.getDate()。你可能想要的是date_util.getTime()。

无论如何看看this link是否有帮助。

【讨论】：

我已经完成了对我的代码的更正，全部用英文写成并澄清了我的问题......所以，问题出在这一行：
call.setInitialDate((Date) tfInitialDate.getValue());一开始我在 try 块之前使用那些注释行但是他们选择系统日期和时间，我不知道我是否应该将它转换为 java.sql.Date，我已经格式化了这个 textField属性 > formatterFactory