我正在使用Apache POI（XSSF API）来读取xlsx文件。当我尝试读取file.i时出现以下错误：
org.apache.poi.POIXMLException: org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]
代码：
public class ReadXLSX
{
private String filepath;
private XSSFWorkbook workbook;
private static Logger logger=null;
private InputStream resourceAsStream;
public ReadXLSX(String FilePath)
{
logger=LoggerFactory.getLogger("ReadXLSX");
this.filepath=FilePath;
resourceAsStream = ClassLoader.getSystemResourceAsStream(filepath);
}
public ReadXLSX(InputStream fileStream)
{
logger=LoggerFactory.getLogger("ReadXLSX");
this.resourceAsStream=fileStream;
}
private void loadFile() throws FileNotFoundException, NullObjectFoundException
{
if(resourceAsStream==null)
throw new FileNotFoundException("Unable to locate give file..");
else
{
try
{
workbook = new XSSFWorkbook(resourceAsStream);
}
catch(IOException ex)
{
}
}
}// end loadxlsFile
public String[] getSheetsName()
{
int totalsheet=0;int i=0;
String[] sheetName=null;
try {
loadFile();
totalsheet=workbook.getNumberOfSheets();
sheetName=new String[totalsheet];
while(i<totalsheet)
{
sheetName[i]=workbook.getSheetName(i);
i++;
}
} catch (FileNotFoundException ex) {
logger.error(ex);
} catch (NullObjectFoundException ex) {
logger.error(ex);
}
return sheetName;
}
public int[] getSheetsIndex()
{
int totalsheet=0;int i=0;
int[] sheetIndex=null;
String[] sheetname=getSheetsName();
try {
loadFile();
totalsheet=workbook.getNumberOfSheets();
sheetIndex=new int[totalsheet];
while(i<totalsheet)
{
sheetIndex[i]=workbook.getSheetIndex(sheetname[i]);
i++;
}
} catch (FileNotFoundException ex) {
logger.error(ex);
} catch (NullObjectFoundException ex) {
logger.error(ex);
}
return sheetIndex;
}
private boolean validateIndex(int index)
{
if(index < getSheetsIndex().length && index >=0)
return true;
else
return false;
}
public int getNumberOfSheet()
{
int totalsheet=0;
try {
loadFile();
totalsheet=workbook.getNumberOfSheets();
} catch (FileNotFoundException ex) {
logger.error(ex.getMessage());
} catch (NullObjectFoundException ex) {
logger.error(ex.getMessage());
}
return totalsheet;
}
public int getNumberOfColumns(int SheetIndex)
{
int NO_OF_Column=0;XSSFCell cell = null;
XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
{
sheet = workbook.getSheetAt(SheetIndex);
Iterator rowIter = sheet.rowIterator();
XSSFRow firstRow = (XSSFRow) rowIter.next();
Iterator cellIter = firstRow.cellIterator();
while(cellIter.hasNext())
{
cell = (XSSFCell) cellIter.next();
NO_OF_Column++;
}
}
else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
logger.error(ex.getMessage());
}
return NO_OF_Column;
}
public int getNumberOfRows(int SheetIndex)
{
int NO_OF_ROW=0; XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
{
sheet = workbook.getSheetAt(SheetIndex);
NO_OF_ROW = sheet.getLastRowNum();
}
else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
logger.error(ex);}
return NO_OF_ROW;
}
public String[] getSheetHeader(int SheetIndex)
{
int noOfColumns = 0;XSSFCell cell = null; int i =0;
String columns[] = null; XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
{
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
columns = new String[noOfColumns];
Iterator rowIter = sheet.rowIterator();
XSSFRow Row = (XSSFRow) rowIter.next();
Iterator cellIter = Row.cellIterator();
while(cellIter.hasNext())
{
cell = (XSSFCell) cellIter.next();
columns[i] = cell.getStringCellValue();
i++;
}
}
else
throw new InvalidSheetIndexException("Invalid sheet index.");
}
catch (Exception ex) {
logger.error(ex);}
return columns;
}//end of method
public String[][] getSheetData(int SheetIndex)
{
int noOfColumns = 0;XSSFRow row = null;
XSSFCell cell = null;
int i=0;int noOfRows=0;
int j=0;
String[][] data=null; XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
{
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
noOfRows =getNumberOfRows(SheetIndex)+1;
data = new String[noOfRows][noOfColumns];
Iterator rowIter = sheet.rowIterator();
while(rowIter.hasNext())
{
row = (XSSFRow) rowIter.next();
Iterator cellIter = row.cellIterator();
j=0;
while(cellIter.hasNext())
{
cell = (XSSFCell) cellIter.next();
if(cell.getCellType() == cell.CELL_TYPE_STRING)
{
data[i][j] = cell.getStringCellValue();
}
else if(cell.getCellType() == cell.CELL_TYPE_NUMERIC)
{
if (HSSFDateUtil.isCellDateFormatted(cell))
{
String formatCellValue = new DataFormatter().formatCellValue(cell);
data[i][j] =formatCellValue;
}
else
{
data[i][j] = Double.toString(cell.getNumericCellValue());
}
}
else if(cell.getCellType() == cell.CELL_TYPE_BOOLEAN)
{
data[i][j] = Boolean.toString(cell.getBooleanCellValue());
}
else if(cell.getCellType() == cell.CELL_TYPE_FORMULA)
{
data[i][j] = cell.getCellFormula().toString();
}
j++;
}
i++;
} // outer while
}
else throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
logger.error(ex);}
return data;
}
public String[][] getSheetData(int SheetIndex,int noOfRows)
{
int noOfColumns = 0;
XSSFRow row = null;
XSSFCell cell = null;
int i=0;
int j=0;
String[][] data=null;
XSSFSheet sheet=null;
try {
loadFile(); //load give Excel
if(validateIndex(SheetIndex))
{
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
data = new String[noOfRows][noOfColumns];
Iterator rowIter = sheet.rowIterator();
while(i<noOfRows)
{
row = (XSSFRow) rowIter.next();
Iterator cellIter = row.cellIterator();
j=0;
while(cellIter.hasNext())
{
cell = (XSSFCell) cellIter.next();
if(cell.getCellType() == cell.CELL_TYPE_STRING)
{
data[i][j] = cell.getStringCellValue();
}
else if(cell.getCellType() == cell.CELL_TYPE_NUMERIC)
{
if (HSSFDateUtil.isCellDateFormatted(cell))
{
String formatCellValue = new DataFormatter().formatCellValue(cell);
data[i][j] =formatCellValue;
}
else
{
data[i][j] = Double.toString(cell.getNumericCellValue());
}
}
j++;
}
i++;
} // outer while
}else throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
logger.error(ex);
}
return data;
}
请帮我解决这个问题。
由于
答案 0 :(得分：23)
错误告诉您POI无法找到OOXML文件的核心部分，在本例中是内容类型部分。您的文件不是有效的OOXML文件，更不用说有效的.xlsx文件了。这是一个有效的zip文件，否则你会得到一个早期的错误
Excel真的能加载这个文件吗？我希望它不会，因为异常最常见的是给POI一个普通的.zip文件！我怀疑你的文件无效，因此异常
更新：在Apache POI 3.15（从beta 1开始），对于此问题的更常见原因，有一组更有用的异常消息。在这种情况下，您现在可以获得更多描述性异常，例如ODFNotOfficeXmlFileException和OLE2NotOfficeXmlFileException。如果POI真的不知道你给出了什么，但知道它被破坏或无效，那么这种原始形式应该只会出现。
答案 1 :(得分：15)
当Excel文件受密码保护或文件本身已损坏时，请确保抛出此异常。如果您只想阅读.xlsx文件，请尝试下面的代码。它更短更容易阅读。
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.Sheet;
//.....
static final String excelLoc = "C:/Documents and Settings/Users/Desktop/testing.xlsx";
public static void ReadExcel() {
InputStream inputStream = null;
try {
inputStream = new FileInputStream(new File(excelLoc));
Workbook wb = WorkbookFactory.create(inputStream);
int numberOfSheet = wb.getNumberOfSheets();
for (int i = 0; i < numberOfSheet; i++) {
Sheet sheet = wb.getSheetAt(i);
//.... Customize your code here
// To get sheet name, try -> sheet.getSheetName()
}
} catch {}
}
答案 2 :(得分：9)
如果您将旧的.xls文件传递到此API，则会出现此错误。将.xls保存为.xlsx然后它将起作用。
答案 3 :(得分：8)
我正在使用XSSFWorkbook来读取.xls，这导致了InvalidFormatException。我必须使用更通用的工作簿和工作表来使其工作。
这post帮助我解决了我的问题。
答案 4 :(得分：2)
如果您尝试从同一源解析同一文件两次，也可能会看到此错误。
我正在解析文件一次以验证并再次（来自相同的InputStream）进行处理 - 这产生了上述错误。
为了解决这个问题，我将源文件解析为 2个不同的InputStreams ，一个用于验证，另一个用于处理。
答案 5 :(得分：1)
清理代码（主要是注释掉记录器），使其在我的Eclipse环境中运行。
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.*;
public class ReadXLSX {
private String filepath;
private XSSFWorkbook workbook;
// private static Logger logger=null;
private InputStream resourceAsStream;
public ReadXLSX(String filePath) {
// logger=LoggerFactory.getLogger("ReadXLSX");
this.filepath = filePath;
resourceAsStream = ClassLoader.getSystemResourceAsStream(filepath);
}
public ReadXLSX(InputStream fileStream) {
// logger=LoggerFactory.getLogger("ReadXLSX");
this.resourceAsStream = fileStream;
}
private void loadFile() throws FileNotFoundException,
NullObjectFoundException {
if (resourceAsStream == null)
throw new FileNotFoundException("Unable to locate give file..");
else {
try {
workbook = new XSSFWorkbook(resourceAsStream);
} catch (IOException ex) {
}
}
}// end loadxlsFile
public String[] getSheetsName() {
int totalsheet = 0;
int i = 0;
String[] sheetName = null;
try {
loadFile();
totalsheet = workbook.getNumberOfSheets();
sheetName = new String[totalsheet];
while (i < totalsheet) {
sheetName[i] = workbook.getSheetName(i);
i++;
}
} catch (FileNotFoundException ex) {
// logger.error(ex);
} catch (NullObjectFoundException ex) {
// logger.error(ex);
}
return sheetName;
}
public int[] getSheetsIndex() {
int totalsheet = 0;
int i = 0;
int[] sheetIndex = null;
String[] sheetname = getSheetsName();
try {
loadFile();
totalsheet = workbook.getNumberOfSheets();
sheetIndex = new int[totalsheet];
while (i < totalsheet) {
sheetIndex[i] = workbook.getSheetIndex(sheetname[i]);
i++;
}
} catch (FileNotFoundException ex) {
// logger.error(ex);
} catch (NullObjectFoundException ex) {
// logger.error(ex);
}
return sheetIndex;
}
private boolean validateIndex(int index) {
if (index < getSheetsIndex().length && index >= 0)
return true;
else
return false;
}
public int getNumberOfSheet() {
int totalsheet = 0;
try {
loadFile();
totalsheet = workbook.getNumberOfSheets();
} catch (FileNotFoundException ex) {
// logger.error(ex.getMessage());
} catch (NullObjectFoundException ex) {
// logger.error(ex.getMessage());
}
return totalsheet;
}
public int getNumberOfColumns(int SheetIndex) {
int NO_OF_Column = 0;
@SuppressWarnings("unused")
XSSFCell cell = null;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
Iterator<Row> rowIter = sheet.rowIterator();
XSSFRow firstRow = (XSSFRow) rowIter.next();
Iterator<Cell> cellIter = firstRow.cellIterator();
while (cellIter.hasNext()) {
cell = (XSSFCell) cellIter.next();
NO_OF_Column++;
}
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
// logger.error(ex.getMessage());
}
return NO_OF_Column;
}
public int getNumberOfRows(int SheetIndex) {
int NO_OF_ROW = 0;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
NO_OF_ROW = sheet.getLastRowNum();
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
// logger.error(ex);
}
return NO_OF_ROW;
}
public String[] getSheetHeader(int SheetIndex) {
int noOfColumns = 0;
XSSFCell cell = null;
int i = 0;
String columns[] = null;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
columns = new String[noOfColumns];
Iterator<Row> rowIter = sheet.rowIterator();
XSSFRow Row = (XSSFRow) rowIter.next();
Iterator<Cell> cellIter = Row.cellIterator();
while (cellIter.hasNext()) {
cell = (XSSFCell) cellIter.next();
columns[i] = cell.getStringCellValue();
i++;
}
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
}
catch (Exception ex) {
// logger.error(ex);
}
return columns;
}// end of method
public String[][] getSheetData(int SheetIndex) {
int noOfColumns = 0;
XSSFRow row = null;
XSSFCell cell = null;
int i = 0;
int noOfRows = 0;
int j = 0;
String[][] data = null;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
noOfRows = getNumberOfRows(SheetIndex) + 1;
data = new String[noOfRows][noOfColumns];
Iterator<Row> rowIter = sheet.rowIterator();
while (rowIter.hasNext()) {
row = (XSSFRow) rowIter.next();
Iterator<Cell> cellIter = row.cellIterator();
j = 0;
while (cellIter.hasNext()) {
cell = (XSSFCell) cellIter.next();
if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
data[i][j] = cell.getStringCellValue();
} else if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
if (HSSFDateUtil.isCellDateFormatted(cell)) {
String formatCellValue = new DataFormatter()
.formatCellValue(cell);
data[i][j] = formatCellValue;
} else {
data[i][j] = Double.toString(cell
.getNumericCellValue());
}
} else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {
data[i][j] = Boolean.toString(cell
.getBooleanCellValue());
}
else if (cell.getCellType() == Cell.CELL_TYPE_FORMULA) {
data[i][j] = cell.getCellFormula().toString();
}
j++;
}
i++;
} // outer while
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
// logger.error(ex);
}
return data;
}
public String[][] getSheetData(int SheetIndex, int noOfRows) {
int noOfColumns = 0;
XSSFRow row = null;
XSSFCell cell = null;
int i = 0;
int j = 0;
String[][] data = null;
XSSFSheet sheet = null;
try {
loadFile(); // load give Excel
if (validateIndex(SheetIndex)) {
sheet = workbook.getSheetAt(SheetIndex);
noOfColumns = getNumberOfColumns(SheetIndex);
data = new String[noOfRows][noOfColumns];
Iterator<Row> rowIter = sheet.rowIterator();
while (i < noOfRows) {
row = (XSSFRow) rowIter.next();
Iterator<Cell> cellIter = row.cellIterator();
j = 0;
while (cellIter.hasNext()) {
cell = (XSSFCell) cellIter.next();
if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
data[i][j] = cell.getStringCellValue();
} else if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
if (HSSFDateUtil.isCellDateFormatted(cell)) {
String formatCellValue = new DataFormatter()
.formatCellValue(cell);
data[i][j] = formatCellValue;
} else {
data[i][j] = Double.toString(cell
.getNumericCellValue());
}
}
j++;
}
i++;
} // outer while
} else
throw new InvalidSheetIndexException("Invalid sheet index.");
} catch (Exception ex) {
// logger.error(ex);
}
return data;
}
}
创建了这个小测试代码：
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
public class ReadXLSXTest {
/**
* @param args
* @throws FileNotFoundException
*/
public static void main(String[] args) throws FileNotFoundException {
// TODO Auto-generated method stub
ReadXLSX test = new ReadXLSX(new FileInputStream(new File("./sample.xlsx")));
System.out.println(test.getSheetsName());
System.out.println(test.getNumberOfSheet());
}
}
这一切都像魅力一样，所以我猜你有一个XLSX文件以这种或那种方式“腐败”。尝试使用其他数据进行测试。
干杯， 维姆
答案 6 :(得分：1)
我为.xls文件获得了相同的异常，但在我打开文件并将其保存为xlsx文件后，以下代码可以正常工作：
try(InputStream is =file.getInputStream()){
XSSFWorkbook workbook = new XSSFWorkbook(is);
...
}
答案 7 :(得分：1)
如果excel文件受密码保护，则会出现此错误。
答案 8 :(得分：0)
尝试仅将文件另存为Excel工作簿。不是任何其他格式。它对我有用。我得到了同样的错误。