如何打印出JTable的特定行/列？

Question

我能够打印完整的JTable，但实际上我想更多地打印JTable的特定部分，例如从第10行到第50行以及第70列到第150列。如何做？

Answer 1

I've faced this problem too. Solved by hiding columns before printing and restoring columns after printing:

// get column num from settings
int num = gridSettings.getColumnsOnPage();// first <num> columns of the table will be printed   

final TableColumnModel model = table.getColumnModel();

// list of removed columns. After printing we add them back
final List<TableColumn> removed = new ArrayList<TableColumn>();

int columnCount = model.getColumnCount();

// hiding columns which are not used for printing
for(int i = num; i < columnCount; ++i){
    TableColumn col = model.getColumn(num);
    removed.add(col);
    model.removeColumn(col);
}                                                   

// printing after GUI will be updated
SwingUtilities.invokeLater(new Runnable() {
    public void run() {
        // table printing
        try {
            table.print(PrintMode.FIT_WIDTH, null, null, true, hpset, true); // here can be your printing
        } catch (PrinterException e) {
            e.printStackTrace();
        }

        // columns restoring
        for(TableColumn col : removed){
            model.addColumn(col);
        }
    }
});

For printing your specific part of a JTable, just change a little bit this code.

Answer 2

获取所选片段的单元格边界并计算所需区域（ Rectangle ），定义剪辑区域以仅绘制所需区域，在可打印中使用Graphics's translate（）方法移动渲染。