ExcelUtil——基本工具类
public class ExcelUtil {
private static final Log log = LogFactory.getLog(ExcelUtil.class);//日志
/**
* 創建Excel對象
* @param excelBean
* @return
*/
public static HSSFWorkbook creatExcel(ExcelBean excelBean){
HSSFWorkbook wb = new HSSFWorkbook(); //創建Excel工作薄
//在Excel工作薄中建一工作表，默認為缺省值
// HSSFSheet sheet = wb.createSheet();
HSSFSheet sheet = wb.createSheet(excelBean.getSheetName());
//設置工作表各列寬度
// setColumnWidth(sheet, excelBean.getWidth());
//設置字體，樣式
//HSSFFont font = setFont(wb, "宋體");
//HSSFCellStyle style = setCellStyle(wb, font);
//設置第一行
List<String> titleList = excelBean.getTitleList();
setRowValue(sheet, titleList, 0); //在索引0的位置創建行（最頂端的行）
//設置數據行
List dataList = excelBean.getDataList();
if(dataList != null){
for(int i=0; i<dataList.size(); i++){
List rowList = (List) dataList.get(i);
setRowValue(sheet, rowList, i+1); //在索引1的位置創建行（第2行）
}
}
return wb;
}
/**
* 設置行值
* @param sheet
* @param List
* @return
*/
public static HSSFSheet setRowValue(HSSFSheet sheet, List<String> list,int rowNo){
if(list != null){
//在索引rowNo的位置創建行
HSSFRow rowTitle = sheet.createRow(rowNo);
for(int i= 0 ; i<list.size();i++){
String title = list.get(i);
//從索引0的位置開始創建單元格（左上端）
HSSFCell cell = rowTitle.createCell((short)i);
cell.setCellValue(title); //設置單元格內容
}
}
return sheet;
}
/**
* 下載Excel
* @param wb
* @param filename MemberList.xls
* @param response
* @return
*/
public static boolean downloadExcel(HSSFWorkbook wb, String filename, HttpServletResponse response){
boolean flag = true;
//設置輸入流
OutputStream output = null;
try {
// 設置響應類型
response.setHeader("Content-disposition", "attachment;filename="+new String(filename.getBytes("gbk"),"ISO-8859-1"));
response.setContentType("application/x-msdownload");
output = response.getOutputStream();
wb.write(output);//輸出到網頁中
output.flush();
log.info("下載Excel：" + filename + ", 成功！");
} catch (Exception e) {
flag = false;
log.info("下載Excel：" + filename + ", 失敗！");
e.printStackTrace();
} finally{
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return flag;
}
/**
* 下載Excel
* add by zhangde 2011-3-17
* @param wb
* @param filename MemberList.xls
* @param response
* @return
*/
public static boolean downloadExcelEncode(String encoding, HSSFWorkbook wb, String filename, HttpServletResponse response){
boolean flag = true;
//設置輸入流
OutputStream output = null;
try {
// 設置響應類型,用utf-8,可能会出现高位（前面）被截。gbk在简体操作系统中不会。
// response.setHeader("Content-disposition", "attachment;filename="+new String(filename.getBytes(encoding),"ISO-8859-1"));
response.setHeader("Content-disposition", "attachment;filename="+URLEncoder.encode(filename, encoding));
System.out.println("filename=" + filename);
System.out.println("URLEncoderfilename=" + URLEncoder.encode(filename, encoding));
response.setContentType("application/x-msdownload");
output = response.getOutputStream();
wb.write(output);//輸出到網頁中
output.flush();
log.info("下載Excel：" + filename + ", 成功！");
} catch (Exception e) {
flag = false;
log.info("下載Excel：" + filename + ", 失敗！");
e.printStackTrace();
} finally{
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return flag;
}
/**
* 下載Excel
* @param wb
* @param filename MemberList.xls
* @param response
* @param encoding 編碼參數 例如 gbk, utf-8
* @return
*/
public static boolean downloadExcel(String encoding, HSSFWorkbook wb, String filename, HttpServletResponse response){
boolean flag = true;
//設置輸入流
OutputStream output = null;
String name = "";
try {
// 設置響應類型
name = FileUtil.toEncodeString(filename, encoding); // 文件名編碼
response.setHeader("Content-disposition", "attachment;filename=" + name);
response.setContentType("application/x-msdownload");
output = response.getOutputStream();
wb.write(output);//輸出到網頁中
output.flush();
log.info("下載Excel：" + filename + ", 成功！");
} catch (Exception e) {
flag = false;
log.info("下載Excel：" + filename + ", 失敗！");
e.printStackTrace();
} finally{
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return flag;
}
/**
* 導入文件（excel）
* @param path 路徑+檔案名
* @param line 從第幾欄開始
* @param rowLen 到第幾列結束
* @return list
* @throws Exception
*/
public static List<Object> importData(InputStream inputStream,int atRow, int line, int rowLen) throws Exception{
List<Object> tmpList = new ArrayList<Object>();
POIFSFileSystem pfs = new POIFSFileSystem(inputStream);
HSSFWorkbook wb = new HSSFWorkbook(pfs);
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow row = null;
try{
int totalRow = sheet.getLastRowNum(); //excel資料行數
if(totalRow>0){ //判斷excel是否為空
for(int i = atRow ; i <=totalRow; i++){
List<Object> rowList = new ArrayList<Object>();
row = sheet.getRow(i);
if(row!=null){ //判斷行是否為空
for(int j = line; j < rowLen; j++){
HSSFCell cell = row.getCell((short) j);
if(cell == null){ //判斷列是否為空
rowList.add("");
}else{
int ctype = cell.getCellType();
switch(ctype){
// 處理string部份
case HSSFCell.CELL_TYPE_BLANK:
rowList.add("");
break;
case HSSFCell.CELL_TYPE_STRING:
rowList.add(cell.getRichStringCellValue().getString().trim());
break;
//處理number部份
case HSSFCell.CELL_TYPE_NUMERIC:
if (HSSFDateUtil.isCellDateFormatted(cell)) { // 是否為日期型
System.out.print( cell.getDateCellValue());
//須轉date格式
rowList.add(cell.getDateCellValue());
}else{
double tmpdouble = cell.getNumericCellValue();
if(tmpdouble - (int)tmpdouble < Double.MIN_VALUE) {
//int
rowList.add(Integer.toString((int)tmpdouble));
}else{
//double
rowList.add(Double.toString(cell.getNumericCellValue()));
}
}
break;
//處理boolean部份
case HSSFCell.CELL_TYPE_BOOLEAN:
rowList.add(cell.getBooleanCellValue());
break;
}
}
}
tmpList.add(rowList);
}
}
}
}catch(Exception e){
e.printStackTrace();
throw e;
}
return tmpList;
}
/**
* 導入文件（excel）包含空行
* @param path 路徑+檔案名
* @param line 從第幾欄開始
* @param rowLen 到第幾列結束
* @return list
* @throws Exception
*/
public static List<Object> importData1(InputStream inputStream,int atRow, int line, int rowLen) throws Exception{
List<Object> tmpList = new ArrayList<Object>();
POIFSFileSystem pfs = new POIFSFileSystem(inputStream);
HSSFWorkbook wb = new HSSFWorkbook(pfs);
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow row = null;
try{
int totalRow = sheet.getLastRowNum(); //excel資料行數
if(totalRow>0){ //判斷excel是否為空
for(int i = atRow ; i <=totalRow; i++){
List<Object> rowList = new ArrayList<Object>();
row = sheet.getRow(i);
if(row!=null){ //判斷行是否為空
for(int j = line; j < rowLen; j++){
HSSFCell cell = row.getCell((short) j);
if(cell == null){ //判斷列是否為空
rowList.add("");
}else{
int ctype = cell.getCellType();
switch(ctype){
// 處理string部份
case HSSFCell.CELL_TYPE_BLANK:
rowList.add("");
break;
case HSSFCell.CELL_TYPE_STRING:
rowList.add(cell.getRichStringCellValue().getString().trim());
break;
//處理number部份
case HSSFCell.CELL_TYPE_NUMERIC:
if (HSSFDateUtil.isCellDateFormatted(cell)) { // 是否為日期型
System.out.print( cell.getDateCellValue());
//須轉date格式
rowList.add(cell.getDateCellValue());
}else{
double tmpdouble = cell.getNumericCellValue();
if(tmpdouble - (int)tmpdouble < Double.MIN_VALUE) {
//int
rowList.add(Integer.toString((int)tmpdouble));
}else{
//double
rowList.add(Double.toString(cell.getNumericCellValue()));
}
}
break;
//處理boolean部份
case HSSFCell.CELL_TYPE_BOOLEAN:
rowList.add(cell.getBooleanCellValue());
break;
}
}
}
}else{
for(int k = line; k < rowLen; k++){
rowList.add("");
}
}
tmpList.add(rowList);
}
}
}catch(Exception e){
e.printStackTrace();
throw e;
}
return tmpList;
}
}