[英]write to excel in java with Java Excel library -can't open file
我使用jxl通過以下方式編寫:
WritableWorkbook workbook = Workbook.createWorkbook(new File("output.xls"));
WritableSheet sheet = workbook.createSheet("First Sheet", 0);
Label label = new Label(0, 2, "A label record");
sheet.addCell(label);
Number number = new Number(3, 4, 3.1459);
sheet.addCell(number);
當我嘗試打開文件時,出現錯誤:
您嘗試打開的文件格式與擴展名指定的格式不同。 在打開文件之前,請驗證文件是否未損壞且來自受信任的來源。 您要立即打開文件嗎?
當我單擊是時,它為空。
您需要添加以下語句:
workbook.write();
workbook.close();
我不能說您的代碼,但是如果您想將數據寫入excel文件,則可以使用此特定代碼,我已經使用了1000多次,
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;
private String[][] contentD;
private int value;
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, 1, "Images");
addCaption(sheet, 2, 1, "XXXXXXXX");
}
private void createContent(WritableSheet sheet) throws WriteException,
RowsExceededException {
// Lets calculate the sum of it
StringBuffer buf = new StringBuffer();
buf.append("SUM(A2:A10)");
Formula f = new Formula(0, 10, buf.toString());
sheet.addCell(f);
buf = new StringBuffer();
buf.append("SUM(B2:B10)");
f = new Formula(1, 10, buf.toString());
sheet.addCell(f);
// Now a bit of text
for (int i = 0; i < contentD.length; i++) {
for (int j = 0; j < contentD[0].length; j++) {
// First column
addLabel(sheet, j, i + 2, contentD[i][j]);
}
}
}
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 WriteExcel(String fileName, String[][] content) throws WriteException, IOException {
contentD = content;
setOutputFile(fileName);
write();
System.out.println("Please check the result file under c:/temp/lars.xls ");
}
}
這樣叫
WriteExcel writeExcel =新的WriteExcel(“ d:\\ res.xls”,contentData);
其中contentData是具有Excel工作表數據的二維數組。
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