标签：io os java ar for art sp on c
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
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.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.multipart.MultipartFile;
public class ExcelDataUtil {
public String getFileName(MultipartFile file) {
return (String) file.getOriginalFilename();
}
public String[][] GetExcelData(MultipartFile file, int columnNumber)
throws Exception {
String[][] arr = null;
Workbook wb = null;
try {
wb = new HSSFWorkbook(file.getInputStream());//2003
} catch (Exception e) {
wb = new XSSFWorkbook(file.getInputStream());//2007
}
int sheetNum = wb.getNumberOfSheets();
for (int i = 0; i < sheetNum; i++) {
Sheet childSheet = wb.getSheetAt(i);
int rowNum = childSheet.getPhysicalNumberOfRows();
for (int j = 0; j < rowNum; j++) {
Row row = childSheet.getRow(j);
int cellNum = columnNumber + 1;
if (j == 0)
arr = new String[rowNum][cellNum];
for (int k = 0; k < cellNum; k++) {
Cell cell = row.getCell(k);
arr[j][k] = parseExcel(cell);
}
}
}
return arr;
}
public static String getSheetName(MultipartFile file)
throws Exception {
Workbook wb = null;
try {
wb = new HSSFWorkbook(file.getInputStream());//2003
} catch (Exception e) {
wb = new XSSFWorkbook(file.getInputStream());//2007
}
return wb.getSheetName(0);
}
public HashMap<String, HashMap<String, String[][]>> GetExcelMapData(
MultipartFile file, int columnNumber) throws Exception {
HashMap<String, HashMap<String, String[][]>> maps = new HashMap<String, HashMap<String, String[][]>>();
HashMap<String, String[][]> mapda = new HashMap<String, String[][]>();
String filename = file.getOriginalFilename();
String ModelYear="";
if(filename.lastIndexOf("_")!=-1){
ModelYear = filename.substring((filename.lastIndexOf("_")-4),
(filename.lastIndexOf("_")));
}
String[][] arr = null;
Workbook wb = null;
try {
wb = new HSSFWorkbook(file.getInputStream(), true);//2003
} catch (Exception e) {
wb = new XSSFWorkbook(file.getInputStream());//2007
}
int sheetNum = wb.getNumberOfSheets();
for (int i = 0; i < sheetNum; i++) {
Sheet childSheet = wb.getSheetAt(i);
String ModelType = wb.getSheetName(i);
int rowNum = childSheet.getPhysicalNumberOfRows();
for (int j = 0; j < rowNum; j++) {
Row row = childSheet.getRow(j);
if(row!=null){
int cellNum = columnNumber + 1;
if (j == 0)
arr = new String[rowNum][cellNum];
for (int k = 0; k < cellNum; k++) {
Cell cell = row.getCell(k);
arr[j][k] = parseExcel(cell);
}
}
}
mapda.put(ModelType, arr);
}
maps.put(ModelYear, mapda);
return maps;
}
/**
* DecimalFormat to avoid the E-annotation for big double
*/
private static DecimalFormat DECIMALFORMAT = new DecimalFormat("#.######");
private String parseExcel(Cell cell) {
if (cell == null)
return "";
String result = new String();
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_NUMERIC:// 数字类型
if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、 时间格式
SimpleDateFormat sdf = null;
sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = cell.getDateCellValue();
result = sdf.format(date);
} else {
double va = cell.getNumericCellValue();
if (va == (int) va)// 去掉数值类型后面的".0"
result = String.valueOf((int) va);
else
// result = String.valueOf(va); //if the double value is too big, it will be displayed in E-notation
result = DECIMALFORMAT.format(va);
}
break;
case HSSFCell.CELL_TYPE_FORMULA:
// cell.getCellFormula();
try {
result = String.valueOf(cell.getNumericCellValue());
} catch (IllegalStateException e) {
result = String.valueOf(cell.getRichStringCellValue());
}
break;
case HSSFCell.CELL_TYPE_STRING:// String类型
result = cell.getRichStringCellValue().toString();
break;
case HSSFCell.CELL_TYPE_BLANK:
result = "";
default:
result = "";
break;
}
return result;
}
public static void exportExcels(String fileName,String[][] excles, OutputStream os) throws IOException {
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet("new sheet");
int rows = 0;
for(String[] cells : excles){
HSSFRow row = sheet.createRow(rows++);
int cols = 0;
for(String cellValue : cells){
HSSFCell cell = row.createCell(cols++);
cell.setCellValue(cellValue);
}
}
wb.write(os);
}
public static byte[] exportExcels(String[][] excles) throws IOException {
HSSFWorkbook wb = new HSSFWorkbook();
ByteArrayOutputStream os = new ByteArrayOutputStream();
HSSFSheet sheet = wb.createSheet("new sheet");
int rows = 0;
for(String[] cells : excles){
HSSFRow row = sheet.createRow(rows++);
int cols = 0;
for(String cellValue : cells){
HSSFCell cell = row.createCell(cols++);
cell.setCellValue(cellValue);
}
}
wb.write(os);
return os.toByteArray();
}
}
标签：io os java ar for art sp on c
原文地址：http://my.oschina.net/u/1455908/blog/313594
