关于POI设置SHEET名称以及合并单元格，复制单元格方法
//SHEET命名
Workbook workbook = ReadExcel.openExcleFile(srcXlsxPath);
// 获取合同到期工作簿
Sheet sheet1 = workbook.getSheetAt(0);// 获取页签
workbook.setSheetName(0, "12" + "月合同到期");//合并单元格
sheet1.addMergedRegion(new CellRangeAddress(csize + 2, csize + 2, 0, 6));// 合并单元格
sheet1.addMergedRegion(new CellRangeAddress(2, csize + 2, 12, 12));// 合并单元格//poi工具类
package com.bpms.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PushbackInputStream;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.apache.poi.POIXMLDocument;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
/**
*
* 读取excle文件内容
*
* @author liuhh 2014/10/20.
*
* @version V1.00.
*
*
*/
public class ReadExcel {
/** 日志. */
public static Logger logger = Logger.getLogger(ReadExcel.class);
/**
* 私有构造方法.
*/
private ReadExcel() {
}
/**
* 打开excle文件
*
* @param fileName
* 带后缀excle文件名称
* @return
* @throws IOException
* @throws InvalidFormatException
*/
public static Workbook openExcleFile(String filePath) throws Exception {
// 定义返回值
Workbook workbook = null;
try {
// 打开工作簿
workbook = WorkbookFactory.create(new File(filePath));
} catch (Exception e) {
e.printStackTrace();
logger.error(e.getMessage());
}
// 返回
return workbook;
}
public static Workbook createworkbook(String filePath) throws IOException,InvalidFormatException {
InputStream inp = new FileInputStream(filePath);
if (!inp.markSupported()) {
inp = new PushbackInputStream(inp, 8);
}
if (POIFSFileSystem.hasPOIFSHeader(inp)) {
return new HSSFWorkbook(inp);
}
if (POIXMLDocument.hasOOXMLHeader(inp)) {
return new XSSFWorkbook(OPCPackage.open(inp));
}
throw new IllegalArgumentException("你的excel版本目前poi解析不了");
}
/**
*
* @param cell
* 获取的单元格
* @return 返回单元格中的值
*/
public static Object getCellValue(Cell cell) {
// 定义返回值
Object objResult = null;
// 判断单元格中的值
if (cell != null) {
// 匹配格式类型
switch (cell.getCellType()) {
// 字符串类型
case Cell.CELL_TYPE_STRING:
objResult = cell.getRichStringCellValue().getString();
break;
// 货币类型
case Cell.CELL_TYPE_NUMERIC:
if (DateUtil.isCellDateFormatted(cell)) {
objResult = cell.getDateCellValue();
} else {
objResult = cell.getNumericCellValue();
}
break;
// 布尔类型
case Cell.CELL_TYPE_BOOLEAN:
objResult = cell.getBooleanCellValue();
break;
// 公式
case Cell.CELL_TYPE_FORMULA:
try {
objResult = cell.getNumericCellValue();
} catch (IllegalStateException e) {
objResult = String.valueOf(cell.getRichStringCellValue());
}
default:
}
}
// 返回取到的单元格值
return objResult;
}
/**
* 复制单元格
*
* @param currentSheet
* sheet页
* @param startRow
* 开始行
* @param endRow
* 结束行
* @param pPosition
* 目标位置
*/
public static void copyRows(Sheet currentSheet, int startRow, int endRow,
int pPosition) {
int pStartRow = startRow - 1;
int pEndRow = endRow - 1;
int targetRowFrom;
int targetRowTo;
int columnCount;
CellRangeAddress region = null;
int i;
int j;
if (pStartRow == -1 || pEndRow == -1) {
return;
}
for (i = 0; i < currentSheet.getNumMergedRegions(); i++) {
region = currentSheet.getMergedRegion(i);
if ((region.getFirstRow() >= pStartRow)
&& (region.getLastRow() <= pEndRow)) {
targetRowFrom = region.getFirstRow() - pStartRow + pPosition;
targetRowTo = region.getLastRow() - pStartRow + pPosition;
CellRangeAddress newRegion = region.copy();
newRegion.setFirstRow(targetRowFrom);
newRegion.setFirstColumn(region.getFirstColumn());
newRegion.setLastRow(targetRowTo);
newRegion.setLastColumn(region.getLastColumn());
currentSheet.addMergedRegion(newRegion);
}
}
for (i = pStartRow; i <= pEndRow; i++) {
XSSFRow sourceRow = (XSSFRow) currentSheet.getRow(i);
columnCount = sourceRow.getLastCellNum();
if (sourceRow != null) {
XSSFRow newRow = (XSSFRow) currentSheet.createRow(pPosition
- pStartRow + i);
newRow.setHeight(sourceRow.getHeight());
for (j = 0; j < columnCount; j++) {
XSSFCell templateCell = sourceRow.getCell(j);
if (templateCell != null) {
XSSFCell newCell = newRow.createCell(j);
copyCell(templateCell, newCell);
}
}
}
}
}
public static void copyCell(XSSFCell srcCell, XSSFCell distCell) {
distCell.setCellStyle(srcCell.getCellStyle());
if (srcCell.getCellComment() != null) {
distCell.setCellComment(srcCell.getCellComment());
}
int srcCellType = srcCell.getCellType();
distCell.setCellType(srcCellType);
if (srcCellType == XSSFCell.CELL_TYPE_NUMERIC) {
if (HSSFDateUtil.isCellDateFormatted(srcCell)) {
distCell.setCellValue(srcCell.getDateCellValue());
} else {
distCell.setCellValue(srcCell.getNumericCellValue());
}
} else if (srcCellType == XSSFCell.CELL_TYPE_STRING) {
distCell.setCellValue(srcCell.getRichStringCellValue());
} else if (srcCellType == XSSFCell.CELL_TYPE_BLANK) {
// nothing21
} else if (srcCellType == XSSFCell.CELL_TYPE_BOOLEAN) {
distCell.setCellValue(srcCell.getBooleanCellValue());
} else if (srcCellType == XSSFCell.CELL_TYPE_ERROR) {
distCell.setCellErrorValue(srcCell.getErrorCellValue());
} else if (srcCellType == XSSFCell.CELL_TYPE_FORMULA) {
distCell.setCellFormula(srcCell.getCellFormula());
} else { // nothing29
}
}
public static void fileDownload(HttpServletResponse response,String path){
//1.设置文件ContentType类型，这样设置，会自动判断下载文件类型
response.setContentType("multipart/form-data");
//2.设置文件头：最后一个参数是设置下载文件名(假如我们叫a.pdf)
response.setHeader("Content-Disposition", "attachment;fileName="+"a.xlsx");
ServletOutputStream out;
//通过文件路径获得File对象(假如此路径中有一个download.pdf文件)
File file = new File(path);
try {
FileInputStream inputStream = new FileInputStream(file);
//3.通过response获取ServletOutputStream对象(out)
out = response.getOutputStream();
int b = 0;
byte[] buffer = new byte[512];
while (b != -1){
b = inputStream.read(buffer);
//4.写到输出流(out)中
out.write(buffer,0,b);
}
inputStream.close();
out.close();
out.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
}