package testpoi;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
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;
import org.apache.poi.hssf.util.Region;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
/**
* 将某SHEET页中的某几行复制到某SHEET页的某几行中。抱括被合并了的单元格。
*/
public class RowCopy {
/**
* @param args
* @throws IOException
* @throws FileNotFoundException
*/
@SuppressWarnings("deprecation")
public static void main(String[] args) {
try {
POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(
"d:\\exlsample.xls"));
HSSFWorkbook wb = new HSSFWorkbook(fs);
// source为源sheet 页,target为目标sheet页
copyRows(wb, "source", "target", 5, 6, 20);
FileOutputStream fileOut = new FileOutputStream("d:\\exlsample.xls");
wb.write(fileOut);
fileOut.flush();
fileOut.close();
System.out.println("Operation finished");
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @param wb HSSFWorkbook
* @param pSourceSheetName 源sheet页名称
* @param pTargetSheetName 目标sheet页名称
* @param pStartRow 源sheet页中的起始行
* @param pEndRow 源sheet页中的结束行
* @param pPosition 目标sheet页中的开始行
*/
public static void copyRows(HSSFWorkbook wb, String pSourceSheetName,
String pTargetSheetName, int intStartRow, int intEndRow, int intPosition) {
// EXECL中的行是从1开始的，而POI中是从0开始的，所以这里要减1.
int pStartRow = intStartRow - 1;
int pEndRow = intEndRow - 1;
int pPosition = intPosition - 1;
HSSFRow sourceRow = null;
HSSFRow targetRow = null;
HSSFCell sourceCell = null;
HSSFCell targetCell = null;
HSSFSheet sourceSheet = null;
HSSFSheet targetSheet = null;
Region region = null;
int cType;
int i;
int j;
int targetRowFrom;
int targetRowTo;
if ((pStartRow == -1) || (pEndRow == -1)) {
return;
}
sourceSheet = wb.getSheet(pSourceSheetName);
targetSheet = wb.getSheet(pTargetSheetName);
System.out.println(sourceSheet.getNumMergedRegions());
// 拷贝合并的单元格
for (i = 0; i < sourceSheet.getNumMergedRegions(); i++) {
region = sourceSheet.getMergedRegionAt(i);
if ((region.getRowFrom() >= pStartRow)
&& (region.getRowTo() <= pEndRow)) {
targetRowFrom = region.getRowFrom() - pStartRow + pPosition;
targetRowTo = region.getRowTo() - pStartRow + pPosition;
region.setRowFrom(targetRowFrom);
region.setRowTo(targetRowTo);
targetSheet.addMergedRegion(region);
}
}
// 设置列宽
for (i = pStartRow; i <= pEndRow; i++) {
sourceRow = sourceSheet.getRow(i);
if (sourceRow != null) {
for (j = sourceRow.getLastCellNum(); j > sourceRow
.getFirstCellNum(); j--) {
targetSheet
.setColumnWidth(j, sourceSheet.getColumnWidth(j));
targetSheet.setColumnHidden(j, false);
}
break;
}
}
// 拷贝行并填充数据
for (; i <= pEndRow; i++) {
sourceRow = sourceSheet.getRow(i);
if (sourceRow == null) {
continue;
}
targetRow = targetSheet.createRow(i - pStartRow + pPosition);
targetRow.setHeight(sourceRow.getHeight());
for (j = sourceRow.getFirstCellNum(); j < sourceRow
.getPhysicalNumberOfCells(); j++) {
sourceCell = sourceRow.getCell(j);
if (sourceCell == null) {
continue;
}
targetCell = targetRow.createCell(j);
targetCell.setCellStyle(sourceCell.getCellStyle());
cType = sourceCell.getCellType();
targetCell.setCellType(cType);
switch (cType) {
case HSSFCell.CELL_TYPE_BOOLEAN:
targetCell.setCellValue(sourceCell.getBooleanCellValue());
System.out.println("--------TYPE_BOOLEAN:"
+ targetCell.getBooleanCellValue());
break;
case HSSFCell.CELL_TYPE_ERROR:
targetCell
.setCellErrorValue(sourceCell.getErrorCellValue());
System.out.println("--------TYPE_ERROR:"
+ targetCell.getErrorCellValue());
break;
case HSSFCell.CELL_TYPE_FORMULA:
// parseFormula这个函数的用途在后面说明
targetCell.setCellFormula(parseFormula(sourceCell
.getCellFormula()));
System.out.println("--------TYPE_FORMULA:"
+ targetCell.getCellFormula());
break;
case HSSFCell.CELL_TYPE_NUMERIC:
targetCell.setCellValue(sourceCell.getNumericCellValue());
System.out.println("--------TYPE_NUMERIC:"
+ targetCell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_STRING:
targetCell
.setCellValue(sourceCell.getRichStringCellValue());
System.out.println("--------TYPE_STRING:" + i
+ targetCell.getRichStringCellValue());
break;
}
}
}
}
/**
* POI对Excel公式的支持是相当好的，但是有一个问题，如果公式里面的函数不带参数，比如now()或today()，
* 那么你通过getCellFormula()取出来的值就是now(ATTR(semiVolatile))和today(ATTR(semiVolatile))，
* 这样的值写入Excel是会出错的，这也是我上面copyRow的函数在写入公式前要调用parseFormula的原因，
* parseFormula这个函数的功能很简单，就是把ATTR(semiVolatile)删掉。
* @param pPOIFormula
* @return
*/
private static String parseFormula(String pPOIFormula) {
final String cstReplaceString = "ATTR(semiVolatile)"; //$NON-NLS-1$
StringBuffer result = null;
int index;
result = new StringBuffer();
index = pPOIFormula.indexOf(cstReplaceString);
if (index >= 0) {
result.append(pPOIFormula.substring(0, index));
result.append(pPOIFormula.substring(index
+ cstReplaceString.length()));
} else {
result.append(pPOIFormula);
}
return result.toString();
}
}