Java 在使用ApachePOI读取xlsx文件时获取异常（org.apache.poi.openxml4j.Exception-无内容类型[M1.13]）？

我正在使用Apache POI（XSSF API）读取xlsx文件。当我尝试读取文件时，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：

公共类ReadXLSX
{
私有字符串文件路径；
私人XSSF工作簿；
专用静态记录器=null；
私有输入流资源流；
公共ReadXLSX（字符串文件路径）
{
logger=LoggerFactory.getLogger（“ReadXLSX”）；
this.filepath=filepath；
resourceAsStream=ClassLoader.getSystemResourceAsStream（文件路径）；
}
公共ReadXLSX（输入流文件流）
{ 
logger=LoggerFactory.getLogger（“ReadXLSX”）；
this.resourceAsStream=fileStream；
}
私有void loadFile（）引发FileNotFoundException、NullObjectFoundException
{
if（resourceAsStream==null）
抛出新的FileNotFoundException（“无法找到给定文件…”）；
其他的
{
尝试
{
工作簿=新XSSF工作簿（resourceAsStream）；
}
捕获（IOEX异常）
{
}
}
}//结束加载XLSFILE
公共字符串[]getSheetsName（）
{
int totalsheet=0；int i=0；
字符串[]sheetName=null；
试一试{
loadFile（）；
totalsheet=workbook.getNumberOfSheets（）；
sheetName=新字符串[totalsheet]；
while（我清理了代码（大部分注释掉了记录器），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;
}
}

所有这些运行起来都很有魅力，所以我猜您有一个XLSX文件在某种程度上“损坏”。请尝试使用其他数据进行测试

干杯，
Wim清理了代码（大部分注释掉了记录器），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;
}
}

所有这些运行起来都很有魅力，所以我猜您有一个XLSX文件在某种程度上“损坏”。请尝试使用其他数据进行测试

干杯，
Wim
非常确定，当Excel文件受密码保护或文件本身已损坏时，会引发此异常。如果您只想读取.xlsx文件，请尝试下面的我的代码。它更简短，更易于阅读

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 {}
}

import org.apache.poi.ss.usermodel.WorkbookFactory；
导入org.apache.poi.ss.usermodel.工作簿；
导入org.apache.poi.ss.usermodel.Sheet；
//.....
静态最终字符串excelLoc=“C:/Documents and Settings/Users/Desktop/testing.xlsx”；
公共静态void ReadExcel（）{
InputStream InputStream=null；
试一试{
inputStream=新文件inputStream（新文件（excelLoc））；
工作簿wb=WorkbookFactory.create（inputStream）；
int numberOfSheet=wb.getNumberOfSheets（）；
对于（int i=0；isheet.getSheetName（）
}
}捕获{}
}
非常确定，当Excel文件受密码保护或文件本身损坏时，会引发此异常。如果您只想读取.xlsx文件，请尝试下面的我的代码。它更简短，更易于阅读

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 {}
}

import org.apache.poi.ss.usermodel.WorkbookFactory；
导入org.apache.poi.ss.usermodel.工作簿；
导入org.apache.poi.ss.usermodel.Sheet；
//.....
静态最终字符串excelLoc=“C:/Documents and Settings/Users/Desktop/testing.xlsx”；
公共静态void ReadExcel（）{
InputStream InputStream=null；
试一试{
inputStream=新文件inputStream（新文件（excelLoc））；
工作簿wb=WorkbookFactory.create（inputStream）；
int numberOfSheet=wb.getNumberOfSheets（）；
对于（int i=0；isheet.getSheetName（）
}
}捕获{}
}
错误告诉您POI找不到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。但它是一个有效的zip文件，否则会出现早期错误

Excel真的可以加载此文件吗？我希望它无法加载，因为异常通常是通过给POI一个常规的.zip文件触发的！我怀疑您的文件无效，因此出现异常


更新：在Apache POI 3.15中（从beta 1开始），有一组更有用的异常消息，用于解决此问题的更常见原因。在这种情况下，您将获得更多描述性异常，例如和。只有当POI确实不知道您给出了什么，但知道它已损坏或无效时，才会显示此原始表单。
错误告诉您POI找不到对于OOXML文件，在本例中是内容类型的一部分。您的文件不是有效的OOXML文件，更不用说有效的.xlsx文件了。但它是有效的zip文件，否则会出现早期错误

Excel真的可以加载此文件吗？我希望它无法加载，因为异常通常是通过给POI一个常规的.zip文件触发的！我怀疑您的文件无效，因此出现异常


更新：在Apache POI 3.15中（从beta 1开始），有一组更有用的异常消息，用于解决此问题的更常见的原因。在这种情况下，您将获得更多描述性异常，例如和。只有当POI确实不知道您给出了什么，但知道它已损坏或无效时，才会显示此原始表单。
如果您通过了一个老派。xls f将.xls另存为.xlsx，它就会工作。
如果您将一个旧的.xls文件传递到此API中，则会出现此错误。将.xls另存为.xlsx，然后它就会工作。
我对
.xls
文件有相同的异常，但在打开该文件并将其另存为
xlsx
文件后，以下代码会工作：

 try(InputStream is =file.getInputStream()){
      XSSFWorkbook workbook = new XSSFWorkbook(is);
      ...
 }

对于
.xls
文件，我得到了相同的异常，但在我打开文件并将其保存为
xlsx
文件后，以下代码正常工作：

 try(InputStream is =file.getInputStream()){
      XSSFWorkbook workbook = new XSSFWorkbook(is);
      ...
 }

试着保存文件