Apache POIを使用してExcelシートからすべてのセル値を読み取り、それを1次元の文字列配列に格納したいのですが、Excelから行ごとにデータを読み取り、各セルから値を抽出することはできますか?
この問題を解決するのを手伝ってください。
ありがとう
import Java.io.FileInputStream; import Java.util.Iterator; import Java.util.Vector;
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; import org.Apache.poi.poifs.filesystem.POIFSFileSystem;
パブリッククラスReadExcelFile {public static void main( String [] args ) { String fileName="C:\\temp\\testPOI.xls"; //Read an Excel File and Store in a Vector Vector dataHolder=readExcelFile(fileName); //Print the data read printCellDataToConsole(dataHolder); } public static Vector readExcelFile(String fileName) { /** --Define a Vector --Holds Vectors Of Cells */ Vector cellVectorHolder = new Vector(); try{ /** Creating Input Stream**/ //InputStream myInput= ReadExcelFile.class.getResourceAsStream( fileName ); FileInputStream myInput = new FileInputStream(fileName); /** Create a POIFSFileSystem object**/ POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput); /** Create a workbook using the File System**/ HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem); /** Get the first sheet from workbook**/ HSSFSheet mySheet = myWorkBook.getSheetAt(0); /** We now need something to iterate through the cells.**/ Iterator rowIter = mySheet.rowIterator(); while(rowIter.hasNext()){ HSSFRow myRow = (HSSFRow) rowIter.next(); Iterator cellIter = myRow.cellIterator(); Vector cellStoreVector=new Vector(); while(cellIter.hasNext()){ HSSFCell myCell = (HSSFCell) cellIter.next(); cellStoreVector.addElement(myCell); } cellVectorHolder.addElement(cellStoreVector); } }catch (Exception e){e.printStackTrace(); } return cellVectorHolder; } private static void printCellDataToConsole(Vector dataHolder) { for (int i=0;i<dataHolder.size(); i++){ Vector cellStoreVector=(Vector)dataHolder.elementAt(i); for (int j=0; j < cellStoreVector.size();j++){ HSSFCell myCell = (HSSFCell)cellStoreVector.elementAt(j); String stringCellValue = myCell.toString(); System.out.print(stringCellValue+"\t"); } System.out.println(); } }
}
Javaworldに関するドキュメントがあります それはPOI-Fectです これがどのように達成されるかを示しています。
例:
String fileName = "C:/MyExcelFile.xls"; // file we are interested in
POIFSFileSystem fileSystem = new POIFSFileSystem(new FileInputStream(fileName));
HSSFWorkbook workbook = new HSSFWorkbook(fileSystem);
HSSFSheet sheet = workbook.getSheetAt(0); //Get first Excel Sheet
//Iterate throw each row.
Iterator<Row> rows = sheet.rowIterator();
while (rows.hasNext()) {
HSSFRow row = (HSSFRow) rows.next();
Iterator<Cell> cells = row.cellIterator();
while (cells.hasNext()) {
HSSFCell cell = (HSSFCell) cells.next();
//Must do this, you need to get value based on the cell type
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_NUMERIC:
System.out.println(cell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_STRING:
System.out.println(cell.getStringCellValue());
break;
default: break;
}
}
}