jtable传递给JForm后，CellRenderer失败

Question

我正在尝试在现有的jform中填充现有的jtable。除了将表传回到原始jForm后，仍然很好地除了蜂窝电话格式格式（它格式为£货币）。数据可以确定，但格式化失败。

但是，它在整个populateTeT_new2例程中保持。

我有以下例程：

public static void startFormPopulateResourcesTable2() throws
        SQLException, ParseException {
    String SQL;

    SQL = "SELECT tbl_deals.ID, tbl_stocks.stock_name AS Stock, ";
    SQL = SQL + "tbl_deals.purchase_date AS `Purchase Date`, ";
    SQL = SQL + "tbl_premium_types.premium_type AS Type, ";
    SQL = SQL + "tbl_deals.share_quantity AS Qty, ";
    SQL = SQL + "tbl_deals.total_cost_of_purchase AS `Total ";
    SQL = SQL + "Purchase Cost`, tbl_deals.sell_date AS ";
    SQL = SQL + "`Sale Date`, tbl_stocks.ID, ";
    SQL = SQL + "tbl_deals.purchase_share_price AS `Original ";
    SQL = SQL + "Share Price`, tbl_deals.target_share_price_today ";
    SQL = SQL + "AS `Target Price Today`, ";
    SQL = SQL + "tbl_deals.target_share_price_30_days AS `Target ";
    SQL = SQL + "Price 30 Days`, tbl_stocks.web_site_link, ";
    SQL = SQL + "tbl_stocks.forum_web_site_address FROM ";
    SQL = SQL + "tbl_premium_types INNER JOIN (tbl_stocks INNER ";
    SQL = SQL + "JOIN tbl_deals ON tbl_stocks.ID = ";
    SQL = SQL + "tbl_deals.stock_id) ON tbl_premium_types.ID = ";
    SQL = SQL + "tbl_stocks.premium_type_id ORDER BY ";
    SQL = SQL + "tbl_stocks.stock_name";
    theModules.FormMessages.setStart_forumWebSiteAddressColumnNumber(12);
    theModules.FormMessages.setStart_stockIDColumnNumber(7);
    theModules.FormMessages.setStart_WebSiteAddressListBoxColumn(11);

    int[] visibleColumnNumbers;
    visibleColumnNumbers = new int[5];
    visibleColumnNumbers[0] = 0;
    visibleColumnNumbers[1] = 6;
    visibleColumnNumbers[2] = 7;
    visibleColumnNumbers[3] = 11;
    visibleColumnNumbers[4] = 12;

    int[] currencyColumnNumbers;
    currencyColumnNumbers = new int[4];
    currencyColumnNumbers[0] = 5;
    currencyColumnNumbers[1] = 8;
    currencyColumnNumbers[2] = 9;
    currencyColumnNumbers[3] = 10;

    Statement stmt = DBase.Connect1.DoConnect();
    Admin.FormControllers.populateTable_new2(SQL,
            theModules.FormMessages.getStart_tblDeals(),
            visibleColumnNumbers, stmt, currencyColumnNumbers);

}

.

...拨打这个：

public static void populateTable_new2(String SQL, javax.swing.JTable thisTable, int[] invisibleColumnNumbers, Statement stmt, int[] currencyColumnNumbers) throws SQLException, ParseException {
    Statement thisSTMT;
    thisSTMT = DBase.Connect1.DoConnect();
    ResultSet rst;
    rst = thisSTMT.executeQuery(SQL);
    int theRowCount;
    DefaultTableModel thisDefaultTableModel;
    ResultSetMetaData meta = rst.getMetaData();
    int numberOfColumns = meta.getColumnCount();
    theRowCount
            = DBase.DatabaseValidation.countOfRecordsetRecordsWithUndefinedTable(SQL,
                    stmt);

    String[] theColumnName = new String[numberOfColumns];
    for (int n = 0; n < numberOfColumns; n++) {
        theColumnName[n] = meta.getColumnLabel(n + 1);
    }

    Object[][] theTableData = new Object[theRowCount][numberOfColumns];
    int n = 0;
    while (rst.next()) {

        for (int nn = 0; nn < numberOfColumns; nn++) {
            theTableData[n][nn] = rst.getString(nn + 1);
        }
        n = n + 1;
    }

    thisDefaultTableModel = new DefaultTableModel(theTableData,
            theColumnName);

    thisTable.setModel(thisDefaultTableModel);

    for (n = 0; n < thisTable.getColumnCount(); n++) {
        for (int nn = 0; nn < currencyColumnNumbers.length; nn++) {
            if (currencyColumnNumbers[nn] == n) {
                TableColumn thisColumn;
                thisColumn = thisTable.getColumnModel().getColumn(n);
                TableCellRenderer renderer = new FormatRenderer(NumberFormat.getCurrencyInstance());
                thisColumn.setCellRenderer(renderer);
            }
        }

        for (int nn = 0; nn < invisibleColumnNumbers.length; nn++) {
            if (invisibleColumnNumbers[nn] == n) {
                TableColumn thisColumn;
                thisColumn = thisTable.getColumnModel().getColumn(n);
                thisColumn.setMinWidth(0);
                thisColumn.setMaxWidth(0);
                thisColumn.setWidth(0);
                thisColumn.setPreferredWidth(0);
            }
        }

    }
}

.

您可以帮助我确保一旦表传回原始jform，将确保单元格格式仍然有效。谢谢

Answer 1

每当您创建和添加新的tablEmodel到jtable到一个新的tablecolumnmodel以匹配新数据时，所以您已分配给TableColumn的任何自定义渲染器都会丢失。

但是，它在整个populateTeT_new2例程中保持。

在此例程中，将TableModel添加到表中后，将渲染器添加到TableColumn。

除了将表传回到原始jform后，仍然很好地未维护（IT格式为£）。

不要真正理解这个语句，但我会猜测你再次创建一个新模型到表，但没有将渲染器分配给tableColumns。

或者假设您的型号的结构是相同的并且只有数据更改，那么在第一次使用TableModel创建JTable之后，您可以使用：

table.setAutoCreateColumnsFromModel(false);  

.

并且每次使用表格新型号时都不会重新创建TableColumnModel。