java 实现 excel sheet 拷贝到另一个Excel文件中 poi
public class CopyExcelSheetToAnotherExcelSheet {
public static void main(String[] args) throws FileNotFoundException, IOException {
String fromPath = "D:\\share\\jiemu_new\\";// excel存放路径
String toPath = "c:\\ok\\";// 保存新EXCEL路径
// 新的excel 文件名
String excelName = "节目访问量";
// 创建新的excel
HSSFWorkbook wbCreat = new HSSFWorkbook();
File file = new File(fromPath);
for (File excel : file.listFiles()) {
// 打开已有的excel
String strExcelPath = fromPath + "\\" + excel.getName();
InputStream in = new FileInputStream(strExcelPath);
HSSFWorkbook wb = new HSSFWorkbook(in);
for (int ii = 0; ii < wb.getNumberOfSheets(); ii++) {
HSSFSheet sheet = wb.getSheetAt(ii);
HSSFSheet sheetCreat = wbCreat.createSheet(sheet.getSheetName());
// 复制源表中的合并单元格
MergerRegion(sheetCreat, sheet);
int firstRow = sheet.getFirstRowNum();
int lastRow = sheet.getLastRowNum();
for (int i = firstRow; i <= lastRow; i++) {
// 创建新建excel Sheet的行
HSSFRow rowCreat = sheetCreat.createRow(i);
// 取得源有excel Sheet的行
HSSFRow row = sheet.getRow(i);
// 单元格式样
int firstCell = row.getFirstCellNum();
int lastCell = row.getLastCellNum();
for (int j = firstCell; j < lastCell; j++) {
// 自动适应列宽 貌似不起作用
//sheetCreat.autoSizeColumn(j);
System.out.println(row.getCell(j));
rowCreat.createCell(j);
String strVal ="";
if (row.getCell(j)==null) {
}else{
strVal = removeInternalBlank(row.getCell(j).getStringCellValue());
}
rowCreat.getCell(j).setCellValue(strVal);
}
}
}
}
FileOutputStream fileOut = new FileOutputStream(toPath + excelName + ".xls");
wbCreat.write(fileOut);
fileOut.close();
}
/**
* 复制原有sheet的合并单元格到新创建的sheet
*
* @param sheetCreat
* 新创建sheet
* @param sheet
* 原有的sheet
*/
private static void MergerRegion(HSSFSheet sheetCreat, HSSFSheet sheet) {
int sheetMergerCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergerCount; i++) {
Region mergedRegionAt = sheet.getMergedRegionAt(i);
sheetCreat.addMergedRegion(mergedRegionAt);
}
}
/**
* 去除字符串内部空格
*/
public static String removeInternalBlank(String s) {
// System.out.println("bb:" + s);
Pattern p = Pattern.compile("\\s*|\t|\r|\n");
Matcher m = p.matcher(s);
char str[] = s.toCharArray();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < str.length; i++) {
if (str[i] == \' \') {
sb.append(\' \');
} else {
break;
}
}
String after = m.replaceAll("");
return sb.toString() + after;
}
}