JAVA 解析excel兼容03 和07

public class ExcelReader {
private String filePath;
private String sheetName;
private Workbook workBook;
private Sheet sheet;
private List<String> columnHeaderList;
private List<List<String>> listData;
private List<Map<String,String>> mapData;
private boolean flag;

public ExcelReader(String filePath, String sheetName) {
this.filePath = filePath;
this.sheetName = sheetName;
this.flag = false;
this.load();
}

private void load() {
FileInputStream inStream = null;
try {
inStream = new FileInputStream(new File(filePath));
workBook = WorkbookFactory.create(inStream);
sheet = workBook.getSheet(sheetName);
} catch (Exception e) {
e.printStackTrace();
}finally{
try {
if(inStream!=null){
inStream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}

private String getCellValue(Cell cell) {
String cellValue = "";
DataFormatter formatter = new DataFormatter();
if (cell != null) {
switch (cell.getCellType()) {
case Cell.CELL_TYPE_NUMERIC:
if (DateUtil.isCellDateFormatted(cell)) {
cellValue = formatter.formatCellValue(cell);
} else {
double value = cell.getNumericCellValue();
int intValue = (int) value;
cellValue = value - intValue == 0 ? String.valueOf(intValue) : String.valueOf(value);
}
break;
case Cell.CELL_TYPE_STRING:
cellValue = cell.getStringCellValue();
break;
case Cell.CELL_TYPE_BOOLEAN:
cellValue = String.valueOf(cell.getBooleanCellValue());
break;
case Cell.CELL_TYPE_FORMULA:
cellValue = String.valueOf(cell.getCellFormula());
break;
case Cell.CELL_TYPE_BLANK:
cellValue = "";
break;
case Cell.CELL_TYPE_ERROR:
cellValue = "";
break;
default:
cellValue = cell.toString().trim();
break;
}
}
return cellValue.trim();
}

private void getSheetData() {
listData = new ArrayList<List<String>>();
mapData = new ArrayList<Map<String, String>>();
columnHeaderList = new ArrayList<String>();
int numOfRows = sheet.getLastRowNum() + 1;
for (int i = 0; i < numOfRows; i++) {
Row row = sheet.getRow(i);
Map<String, String> map = new HashMap<String, String>();
List<String> list = new ArrayList<String>();
if (row != null) {
for (int j = 0; j < row.getLastCellNum(); j++) {
Cell cell = row.getCell(j);
if (i == 0){
columnHeaderList.add(getCellValue(cell));
}
else{
map.put(columnHeaderList.get(j), this.getCellValue(cell));
}
list.add(this.getCellValue(cell));
}
}
if (i > 0){
mapData.add(map);
}
listData.add(list);
}
flag = true;
}

public String getCellData(int row, int col){
if(row<=0 || col<=0){
return null;
}
if(!flag){
this.getSheetData();
}
if(listData.size()>=row && listData.get(row-1).size()>=col){
return listData.get(row-1).get(col-1);
}else{
return null;
}
}

public String getCellData(int row, String headerName){
if(row<=0){
return null;
}
if(!flag){
this.getSheetData();
}
if(mapData.size()>=row && mapData.get(row-1).containsKey(headerName)){
return mapData.get(row-1).get(headerName);
}else{
return null;
}
}

public static void main(String[] args) {
ExcelReader eh = new ExcelReader("E:\\workspace\\test.xls","Sheet1");
System.out.println(eh.getCellData(1, 1));
System.out.println(eh.getCellData(1, "test1"));
}
}