我有两个＆x; xlsx＆＃39; files＆＃39; sss.xlsx＆＃39;和＆＃39; abc.xlsx＆＃39;。
在＆＃39; sss.xlsx＆＃39;文件中有一些标题（仅限列，不包含任何数据）和＃abc.xlsx＆＃39;文件有数据。
我想复制来自＆＃39; abc＆＃39;提交给＆＃39; sss＆＃39;通过检查列名逐列文件。如果列名匹配，则将该列数据复制到＆＃34; sss.xlsx＆＃34; 在同一列中（保留在sss文件中给出的列）。
我试过下面的代码。我能写，但写标题被删除。我没有得到我出错的地方。
代码：
public class Read {
private static int flag;
public static void main(String[] args) throws IOException{
//Create blank workbook
HSSFWorkbook workbook1 = new HSSFWorkbook();
//Create a blank sheet
HSSFSheet spreadsheet = workbook1.createSheet(
" Info ");
ArrayList<String> lst = new ArrayList<String>();
Read read = new Read();
File f2 = new File("sss.xlsx");
FileInputStream ios2 = new FileInputStream(f2);
XSSFWorkbook workbook2 = new XSSFWorkbook(ios2);
XSSFSheet sheet2 = workbook2.getSheetAt(0);
int noOfColumns = sheet2.getRow(0).getLastCellNum();
System.out.println(noOfColumns);
//String temp2=f.getSheet();
Iterator<Row> rowIterator = sheet2.iterator();
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
Iterator <Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell1 = cellIterator.next();
String temp2=cell1.getStringCellValue().toString();
System.out.print(cell1.getStringCellValue() + "\n");
lst = read.extractExcelContentByColumnIndex(temp2);
File f3 = new File("sss.xlsx");
FileInputStream ios = new FileInputStream(f3);
XSSFWorkbook workbook3 = new XSSFWorkbook(ios);
String temp1=f3.getName();
//String colName="Mob No";
XSSFSheet sheet3 = workbook3.getSheetAt(0);
//String temp2=f.getSheet();
int columnIndex1=0;
Iterator<Row> rowIterator3 = sheet3.iterator();
//columndata = new ArrayList<String>();
while (rowIterator3.hasNext()) {
Row row3 = rowIterator3.next();
Iterator<Cell> cellIterator3 = row3.cellIterator();
while (cellIterator3.hasNext()) {
Cell cell3 = cellIterator3.next();
String temp5=cell3.getStringCellValue().toString();
//System.out.println(temp);
if(temp5.equals(temp2)){
columnIndex1 = cell1.getColumnIndex();
System.out.println(columnIndex1);
flag=1;
break;
}
}
if(flag==1)
{
flag = 0;
break;
}
}
while (rowIterator.hasNext()) {
Row row6 = rowIterator.next();
// System.out.println(row.getRowNum());
Iterator<Cell> cellIterator6 = row6.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
if(row.getRowNum() > 0){ //To filter column headings
if(cell.getColumnIndex() == columnIndex1){// To match column index
// }
}
}
}
}
for(int RowNum=0; RowNum<lst.size();RowNum++){
HSSFRow row1 = spreadsheet.createRow(RowNum+1);
HSSFCell cell6 = row1.createCell(columnIndex1);
cell6.setCellValue(lst.get(RowNum).toString());
}
}
//Write the workbook in file system
FileOutputStream out = new FileOutputStream(new File("sss.xlsx"));
// System.out.println(lst);
workbook1.write(out);
out.close();
}
}
public ArrayList<String> extractExcelContentByColumnIndex( String colName)
{
ArrayList<String> columndata = null;
int columnIndex= 0;
int flag=0;
try {
File f = new File("abc.xlsx");
FileInputStream ios = new FileInputStream(f);
XSSFWorkbook workbook = new XSSFWorkbook(ios);
String temp1=f.getName();
XSSFSheet sheet = workbook.getSheetAt(0);
//String temp2=f.getSheet();
Iterator<Row> rowIterator = sheet.iterator();
columndata = new ArrayList<String>();
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell1 = cellIterator.next();
String temp=cell1.getStringCellValue().toString();
//System.out.println(temp);
if(temp.equals(colName)){
columnIndex=cell1.getColumnIndex();
flag=1;
break;
}
}
if(flag==1)
{
flag = 0;
break;
}
}
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
// System.out.println(row.getRowNum());
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
if(row.getRowNum() > -1){ //To filter column headings
if(cell.getColumnIndex() == columnIndex){// To match column index
switch (cell.getCellType()) {
case Cell.CELL_TYPE_NUMERIC:
columndata.add(cell.getNumericCellValue()+"");
break;
case Cell.CELL_TYPE_STRING:
columndata.add(cell.getStringCellValue());
break;
}
}
}
}
}
ios.close();
System.out.println(colName);
for(String ele : columndata)
{
System.out.println(ele);
}
} catch (Exception e) {
e.printStackTrace();
}
return columndata;
}
}
提前致谢！