Excel – 自动input到下一个空行
我正在开发一个存储特定数据的程序。 我写了一个代码，创build一个Excel文件，工作表，并在其中写入。 我的代码如下所示。 问题是，当在档案中写入时，我必须指定它应该插入信息的行。 有没有办法让代码自动插入下一个新的空行？
package de.vogella.java.excel.writer; import java.io.File; import java.io.IOException; import java.util.Locale; import jxl.CellView; import jxl.Workbook; import jxl.WorkbookSettings; import jxl.format.UnderlineStyle; import jxl.write.Formula; import jxl.write.Label; import jxl.write.Number; import jxl.write.WritableCellFormat; import jxl.write.WritableFont; import jxl.write.WritableSheet; import jxl.write.WritableWorkbook; import jxl.write.WriteException; import jxl.write.biff.RowsExceededException; public class WriteExcel { private WritableCellFormat timesBoldUnderline; private WritableCellFormat times; private String inputFile; public void setOutputFile(String inputFile) { this.inputFile = inputFile; } public void write() throws IOException, WriteException { File file = new File(inputFile); WorkbookSettings wbSettings = new WorkbookSettings(); wbSettings.setLocale(new Locale("en", "EN")); WritableWorkbook workbook = Workbook.createWorkbook(file, wbSettings); workbook.createSheet("Report", 0); WritableSheet excelSheet = workbook.getSheet(0); createLabel(excelSheet); createContent(excelSheet); workbook.write(); workbook.close(); } private void createLabel(WritableSheet sheet) throws WriteException { // Lets create a times font WritableFont times10pt = new WritableFont(WritableFont.TIMES, 10); // Define the cell format times = new WritableCellFormat(times10pt); // Lets automatically wrap the cells times.setWrap(true); // create create a bold font with unterlines WritableFont times10ptBoldUnderline = new WritableFont(WritableFont.TIMES, 10, WritableFont.BOLD, false, UnderlineStyle.SINGLE); timesBoldUnderline = new WritableCellFormat(times10ptBoldUnderline); // Lets automatically wrap the cells timesBoldUnderline.setWrap(true); CellView cv = new CellView(); cv.setFormat(times); cv.setFormat(timesBoldUnderline); cv.setAutosize(true); // Write a few headers addCaption(sheet, 0, 0, "type"); addCaption(sheet, 1, 0, "result"); addCaption(sheet, 2, 0, "time"); addCaption(sheet, 3, 0, "date");} private void createContent(WritableSheet sheet) throws WriteException, RowsExceededException { // Write a few number for (int i = 1; i < 10; i++) { // First column addLabel(sheet, 0, i, "Boring text " + i); // Second column addNumber(sheet, 1, i, i * i); // third column addNumber(sheet, 2, i, i + 10); //furth column addNumber(sheet, 3, i, i * i);} } private void addCaption(WritableSheet sheet, int column, int row, String s) throws RowsExceededException, WriteException { Label label; label = new Label(column, row, s, timesBoldUnderline); sheet.addCell(label); } private void addNumber(WritableSheet sheet, int column, int row, Integer integer) throws WriteException, RowsExceededException { Number number; number = new Number(column, row, integer, times); sheet.addCell(number); } private void addLabel(WritableSheet sheet, int column, int row, String s) throws WriteException, RowsExceededException { Label label; label = new Label(column, row, s, times); sheet.addCell(label);} public static void main(String[] args) throws WriteException, IOException { WriteExcel test = new WriteExcel(); test.setOutputFile("D:ghada.xls"); test.write(); System.out.println("Please check the result file under c:/temp/lars.xls "); }} 我没有使用该API，所以不知道是否有更好的方法来做到这一点。 另外，Java不是我的东西，所以不能给你任何代码的例子。
您需要在电子表格中find第一个空行。 假设列A总是被填充，您可以从第1行循环到N，直到find空行。
您正在使用的API教程显示了如何阅读Excel文件。