【发布时间】：2016-02-05 00:41:32
【问题描述】：
我知道有人问过这个问题，但在阅读了其他答案后，我仍然不太明白我需要做什么。
我创建了一个巨大的 JTable（60 列和动态数量的行），在使用 DOM 解析器从 XML 文件解析后保存数据。
这个想法是用户应该能够编辑表中的字段，然后单击保存按钮，将生成一个反映更改的新 XML。
问题在于，当用户单击保存并且操作侦听器告诉所有具有原始 XML 值的数组/字符串复制所有单元格值时，即使它们已更改，也只会复制旧单元格值。
我读过其他帖子，人们建议使用不同的表格模型，但如果可能的话，我真的不希望这样做。因为我已经完成了表格，所以我不想回溯并希望更容易解决。
为了您的方便，我将尝试缩短我的代码。
public static int counter;
public static int counter2;
public static JTable tbl;
public static int currentRow;
public static void createGUI(){
counter=XMLParser.NtryRefAL.size();
counter2=counter;
final JFrame frame = new JFrame("CamT54 Builder");
JPanel mainPanel = new JPanel(new BorderLayout());
JPanel panelNorth = new JPanel(new BorderLayout());
JPanel panelSouth = new JPanel(new BorderLayout());
JPanel buttonPanel = new JPanel(new FlowLayout());
JButton uploadButton = new JButton("Upload");
uploadButton.setPreferredSize(new Dimension(150,40));
buttonPanel.add(uploadButton);
JButton saveButton = new JButton("Save Changes");
saveButton.setPreferredSize(new Dimension(150,40));
buttonPanel.add(saveButton);
//Creates the JTable
tbl = new JTable();
DefaultTableModel dtm = new DefaultTableModel(0,0);
String header[] = new String[]{//All 60 column headers are here};
dtm.setColumnIdentifiers(header);
tbl.setModel(dtm);
for(int count = XMLParser.NtryRefAL.size(); count >0; count--){
dtm.addRow(new Object[]{XMLParser.MsgRcptS,XMLParser.CreDtTmS,XMLParser.MsgIdS,
//I add more values for each of the columns here, the loop is for each row.}
XMLParser.NtryRefAL.remove(0);
XMLParser.AmtCcyAL.remove(0);
//Continue to remove the array values so they
can be replaced with the cell values.
}
tbl.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
tbl.getColumnModel().getColumn(0).setPreferredWidth(150);
tbl.getColumnModel().getColumn(1).setPreferredWidth(150);
tbl.getColumnModel().getColumn(2).setPreferredWidth(150);
tbl.getColumnModel().getColumn(3).setPreferredWidth(150);
tbl.getColumnModel().getColumn(4).setPreferredWidth(150);
tbl.getColumnModel().getColumn(5).setPreferredWidth(150);
tbl.getColumnModel().getColumn(6).setPreferredWidth(150);
tbl.getColumnModel().getColumn(7).setPreferredWidth(150);
tbl.getColumnModel().getColumn(8).setPreferredWidth(150);
tbl.getColumnModel().getColumn(9).setPreferredWidth(150);
//Set the rest of the column widths..
uploadButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
FileHandling fHandling = new FileHandling();
fHandling.getFile();
XMLParser parse = new XMLParser();
parse.parseXML();
frame.dispose();
MainGui.createGUI();
}
});
saveButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
String value = (String) tbl.getValueAt(0, 0);
currentRow=0;
//Here I want to save all the cell values into array lists from my other class.
while(counter2>0){
System.out.println(tbl.getValueAt(0, 0));
XMLParser.MsgRcptS.equals(tbl.getValueAt(currentRow, 0));
XMLParser.CreDtTmS.equals(tbl.getValueAt(currentRow, 1));
XMLParser.MsgIdS.equals(tbl.getValueAt(currentRow, 2));
XMLParser.NtfctnIdS.equals(tbl.getValueAt(currentRow, 3));
XMLParser.NtfctnCreDtTmS.equals(tbl.getValueAt(currentRow, 4));
XMLParser.AcctIdS.equals(tbl.getValueAt(currentRow, 5));
XMLParser.NbOfNtriesS.equals(tbl.getValueAt(currentRow, 6));
XMLParser.SumS.equals(tbl.getValueAt(currentRow, 7));
XMLParser.StsAL.add((String) tbl.getValueAt(currentRow, 8));
XMLParser.NtryRefAL.add((String) tbl.getValueAt(currentRow, 9));
XMLParser.RsvlIndAL.add((String) tbl.getValueAt(currentRow, 10));
XMLParser.CdtDbtIndAL.add((String) tbl.getValueAt(currentRow, 11));
XMLParser.AddtlNtryInfAL.add((String) tbl.getValueAt(currentRow, 12));
XMLParser.AmtCcyAL.add((String) tbl.getValueAt(currentRow, 13));
XMLParser.TxDtlsAmtAL.add((String) tbl.getValueAt(currentRow, 14));
XMLParser.TxDtlsCdtDbtIndAL.add((String) tbl.getValueAt(currentRow, 15));
XMLParser.BkTxCdAL.add((String) tbl.getValueAt(currentRow, 16));
XMLParser.TxDtlsMsgIdAL.add((String) tbl.getValueAt(currentRow, 17));
XMLParser.PmtInfIdAL.add((String) tbl.getValueAt(currentRow, 18));
XMLParser.InstrIdAL.add((String) tbl.getValueAt(currentRow, 19));
XMLParser.EndToEndIdAL.add((String) tbl.getValueAt(currentRow, 20));
XMLParser.TxIdAL.add((String) tbl.getValueAt(currentRow, 21));
XMLParser.InitgPtyIdAL.add((String) tbl.getValueAt(currentRow, 22));
XMLParser.DbtrAL.add((String) tbl.getValueAt(currentRow, 23));
XMLParser.DbtrAcctPrtryAL.add((String) tbl.getValueAt(currentRow, 24));
XMLParser.DbtrAcctIdAL.add((String) tbl.getValueAt(currentRow, 25));
XMLParser.CdtrIdAL.add((String) tbl.getValueAt(currentRow, 26));
XMLParser.CdtrAcctIdAL.add((String) tbl.getValueAt(currentRow, 27));
XMLParser.ClrSysIdCdAL.add((String) tbl.getValueAt(currentRow, 28));
XMLParser.MmbIdAL.add((String) tbl.getValueAt(currentRow, 29));
XMLParser.CdtrAgtClrSysIdCdAL.add((String) tbl.getValueAt(currentRow, 30));
XMLParser.CdtrAgtMmbIdAL.add((String) tbl.getValueAt(currentRow, 31));
XMLParser.FinInstnIdNmAL.add((String) tbl.getValueAt(currentRow, 32));
XMLParser.RfrdDocInfNbAL.add((String) tbl.getValueAt(currentRow, 33));
XMLParser.RfrdDocInfTpAL.add((String) tbl.getValueAt(currentRow, 34));
XMLParser.AdjstmntAmtAndRsnAmtCcyAL.add((String) tbl.getValueAt(currentRow, 35));
XMLParser.AdjstmntAmtAndRsnCdtDbtIndAL.add((String) tbl.getValueAt(currentRow, 36));
XMLParser.AdjstmntAmtAndRsnAddtlInfAL.add((String) tbl.getValueAt(currentRow, 37));
XMLParser.CdtrRefInfTpAL.add((String) tbl.getValueAt(currentRow, 38));
XMLParser.CdtrRefInfRefAL.add((String) tbl.getValueAt(currentRow, 39));
XMLParser.IntrBkSttlmDtAL.add((String) tbl.getValueAt(currentRow, 40));
XMLParser.TxDtTmAL.add((String) tbl.getValueAt(currentRow, 41));
XMLParser.RmtCaptureDtAL.add((String) tbl.getValueAt(currentRow, 42));
XMLParser.RmtRcvdDtAL.add((String) tbl.getValueAt(currentRow, 43));
XMLParser.RmtProcDtAL.add((String) tbl.getValueAt(currentRow, 44));
XMLParser.PayInstrmntAL.add((String) tbl.getValueAt(currentRow, 45));
XMLParser.PayTpCdAL.add((String) tbl.getValueAt(currentRow, 46));
XMLParser.PrimaryCustIdAL.add((String) tbl.getValueAt(currentRow, 47));
XMLParser.EnrollmentIdAL.add((String) tbl.getValueAt(currentRow, 48));
XMLParser.CardAcctTpAL.add((String) tbl.getValueAt(currentRow, 49));
XMLParser.PassThruDataAL.add((String) tbl.getValueAt(currentRow, 50));
XMLParser.RmtRepresmtDtAL.add((String) tbl.getValueAt(currentRow, 51));
XMLParser.RmtFinalDtAL.add((String) tbl.getValueAt(currentRow, 52));
XMLParser.RmtSettledDtAL.add((String) tbl.getValueAt(currentRow, 53));
XMLParser.RmtPaidDtAL.add((String) tbl.getValueAt(currentRow, 54));
XMLParser.ClrgMopAL.add((String) tbl.getValueAt(currentRow, 55));
XMLParser.ClrgAcctAL.add((String) tbl.getValueAt(currentRow, 56));
XMLParser.JobIdAL.add((String) tbl.getValueAt(currentRow, 57));
XMLParser.NachaTransCdAL.add((String) tbl.getValueAt(currentRow, 58));
XMLParser.TransTpAL.add((String) tbl.getValueAt(currentRow, 59));
System.out.println(XMLParser.NtryRefAL);
currentRow++;
counter2--;
}
WriteParser wParser = new WriteParser();
wParser.reWrite();
//Rewrites the XML values with the new array list values. This part works
//it just doesn't write the values I want because they aren't being saved.
}
});
panelNorth.add(tbl);
panelNorth.add(new JScrollPane(tbl));
panelNorth.setPreferredSize(new Dimension(500,500));
panelSouth.add(buttonPanel,BorderLayout.NORTH);
mainPanel.add(panelNorth,BorderLayout.NORTH);
mainPanel.add(panelSouth,BorderLayout.SOUTH);
frame.add(mainPanel);
frame.setVisible(true);
frame.setSize(1900,600);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
抱歉，如果该代码难以阅读。我相信我的问题的真正根源在于：
XMLParser.BkTxCdAL.add((String) tbl.getValueAt(currentRow, 16));
这些代码都不起作用。他们只是提取旧值，而不是新值。我怎样才能解决这个问题？
【问题讨论】：
-
我敢打赌，如果您将此程序简化为MVCE，问题将直接跳出。没有 60 列或 100 行等。
-
确实如此，但我想不出一种容易做到这一点的方法，因为它已经有很多类了。我发布了最后一行代码以准确显示问题所在。我只需要知道如何将编辑后的单元格值保存到数组中。
-
AFAICT 最后一行不是问题。编辑单元格时，更改将传播到模型。如果你稍后检索一个单元格，你应该得到一个更新的值。