Ответ 1
Я реализовал некоторые функции с помощью poi. см. код для справки.
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
public class ExcelReadAndWrite {
public static void main(String[] args) throws IOException {
ExcelReadAndWrite excel = new ExcelReadAndWrite();
excel.process("D:/LNN/My Workspace/POI/src/tables.xls");
}
public void process(String fileName) throws IOException {
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(fileName));
HSSFWorkbook workbook = new HSSFWorkbook(bis);
HSSFWorkbook myWorkBook = new HSSFWorkbook();
HSSFSheet sheet = null;
HSSFRow row = null;
HSSFCell cell = null;
HSSFSheet mySheet = null;
HSSFRow myRow = null;
HSSFCell myCell = null;
int sheets = workbook.getNumberOfSheets();
int fCell = 0;
int lCell = 0;
int fRow = 0;
int lRow = 0;
for (int iSheet = 0; iSheet < sheets; iSheet++) {
sheet = workbook.getSheetAt(iSheet);
if (sheet != null) {
mySheet = myWorkBook.createSheet(sheet.getSheetName());
fRow = sheet.getFirstRowNum();
lRow = sheet.getLastRowNum();
for (int iRow = fRow; iRow <= lRow; iRow++) {
row = sheet.getRow(iRow);
myRow = mySheet.createRow(iRow);
if (row != null) {
fCell = row.getFirstCellNum();
lCell = row.getLastCellNum();
for (int iCell = fCell; iCell < lCell; iCell++) {
cell = row.getCell(iCell);
myCell = myRow.createCell(iCell);
if (cell != null) {
myCell.setCellType(cell.getCellType());
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_BLANK:
myCell.setCellValue("");
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
myCell.setCellValue(cell.getBooleanCellValue());
break;
case HSSFCell.CELL_TYPE_ERROR:
myCell.setCellErrorValue(cell.getErrorCellValue());
break;
case HSSFCell.CELL_TYPE_FORMULA:
myCell.setCellFormula(cell.getCellFormula());
break;
case HSSFCell.CELL_TYPE_NUMERIC:
myCell.setCellValue(cell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_STRING:
myCell.setCellValue(cell.getStringCellValue());
break;
default:
myCell.setCellFormula(cell.getCellFormula());
}
}
}
}
}
}
}
bis.close();
BufferedOutputStream bos = new BufferedOutputStream(
new FileOutputStream("workbook.xls", true));
myWorkBook.write(bos);
bos.close();
}
}