ClassCastExceptionデータベースにコンボボックスのデータを挿入する

Question

2つのフィールド（優先度がJComboboxであり、そのIDがコンボで選択されたオプションに従って取得されます）を挿入しようとしていて、残りのフィールドをすべて完了していますこのフォームはこのように動作します

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 { 
       //ClassCastException at this line above 
       call.setPriority((String) cbPriorityDetail.getSelectedItem()); 
       //this one is giving SQL Error and it's flagged by the Catch block of the code 
       call.setPriorityDetail(Long.parseLong(tfIdPriorityDetail.getText())); 
       call.setInitialDate(date_sql); 
       call.setInitialTime(time_sql); 
       call.setFinalTime(time_sql); 

       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, "Inserted User sucessful!!", "Done", JOptionPane.INFORMATION_MESSAGE); 
        btNewActionPerformed(evt); 
       } else { 
        JOptionPane.showMessageDialog(rootPane, "Please fill the fields again", "Isn't possible to insert data", JOptionPane.INFORMATION_MESSAGE); 
        btNewActionPerformed(evt); 
       } 
      } catch (DAOException ex) { 
       JOptionPane.showMessageDialog(rootPane, "MySQL Error", "Error", JOptionPane.ERROR_MESSAGE); 
      } 
     } catch (SQLException ex) { 
      JOptionPane.showMessageDialog(rootPane, "Error to get connection", "Error", JOptionPane.ERROR_MESSAGE); 
     } 
    } 

：下

次の2行で

run: 
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: br.com.jdbc.victor.model.PriorityDetail cannot be cast to java.lang.String 
    at br.com.jdbc.victor.view.FormNewCall.btSubmitActionPerformed(FormNewCall.java:349) 
    at br.com.jdbc.victor.view.FormNewCall.access$500(FormNewCall.java:30) 
    at br.com.jdbc.victor.view.FormNewCall$6.actionPerformed(FormNewCall.java:151) 
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) 
    at javax.swing.AbstractButton$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:495) 
    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) 

：あなたはJComboBoxで1つの項目を選択すべてを提出する...しかし私は、このスタックトレースを取得していた文字列） cbPriorityDetailの高、中または低、 d tfIdPriorityDetail選択した優先順位に従って対応するIDを取得します（私は既にそれを行い、正常に動作しています）。そして、次の3つのフィールドを入力します：最初の日付、初期時刻、最終時刻...それはエラーであり、残りの部分を提出すると正常に動作します。 私のコードで間違っていることについて助けが必要ですか？選択したコンボアイテムと生成されたIDをCallsテーブルに挿入することができません。常にこれらのエラーに直面しています。ありがとうございます！

Answer 1

あなたのコンボボックスは文字列ではなく 'PriorityDetail'オブジェクトを管理しているようです。選択したオブジェクトを 'PriorityDetail'にキャストし、必要なデータを取得する必要があります。

希望します。