我需要从一个Excel文档中创建信息,我正在使用Java和Apache POI。以下是我的代码:
//Get path with JFileChooser
public static String LeeRuta(){
JFileChooser chooser = new JFileChooser();
chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
chooser.showDialog(chooser, "Seleccionar");
File f =chooser.getSelectedFile();
File camino = f.getAbsoluteFile();
String ruta = camino.getAbsolutePath();
return ruta;
}
//main
public static void main(String args[]) {
String ruta=LeeRuta();
/* Don't know if neccesary, but it didn't works with or without it
InputStream inp;
try {
inp = new FileInputStream(ruta);
} catch (FileNotFoundException ex) {
Logger.getLogger(PruebaExcel.class.getName()).log(Level.SEVERE, null, ex);
}
*/
Workbook exceldoc = null;
// Opening file
try {
exceldoc = WorkbookFactory.create(new File(ruta));
//wb = WorkbookFactory.create(new File(ruta));
} catch (InvalidFormatException | IOException e) {
e.printStackTrace();
}
//Selecting the sheet
String nombredoc = exceldoc.getSheetName(0);
Sheet hoja = exceldoc.getSheet(nombredoc);
//Selecting the cell
Cell celda = hoja.getRow(1).getCell(1);
// System.out.println(celda);
System.out.println(hoja.getRow(2).getCell(3));
//Variables
int anyo = 2014;
String ota = "OTa 158";
//Setting Cells value
hoja.getRow(2).getCell(4).setCellValue(anyo);
hoja.getRow(2).getCell(5).setCellValue(ota);
//If I print here cell values, I see that values has been set.
//Saving
try {
//hoja.getRow(3).getCell(4).setCellValue(fecha);
FileOutputStream out = new FileOutputStream("C:\\Documents and Settings\\INGENIERIA2\\Mis documentos\\Informe.xls");
} catch (FileNotFoundException ex) {
Logger.getLogger(PruebaExcel.class.getName()).log(Level.SEVERE, null, ex);
}
try {
exceldoc.write(out);
} catch (IOException ex) {
Logger.getLogger(PruebaExcel.class.getName()).log(Level.SEVERE, null, ex);
}
}
问题在于Informe.xls文件是空的(文件大小为0 KB),Excel显示其已损坏或损坏。我想我没有很好地处理输出流和写入,但不知道该如何解决。