我有一个现有的XLSM文件，在其中我尝试使用Apache POI写入数据。
String File = GlobalVariables.XLSM;
try {
Workbook workbook;
workbook = new XSSFWorkbook(OPCPackage.open(GlobalVariables.XLSM));
Sheet sheet = workbook.getSheetAt(0);
Row row = sheet.createRow(recordcount+5);
Cell cell;
cell = row.createCell(GlobalVariables.testID);
cell.setCellValue(recordcount);
FileOutputStream out = new FileOutputStream(new File(File));
workbook.write(out);
out.close();
System.out.println("Data was written in XLSM");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (InvalidFormatException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
我收到错误消息：
org.apache.poi.ooxml.POIXMLException：java.io.EOFException：意外 ZLIB输入流的结尾
问题与GZIPinStream和GZIPOutputStream无关。
更新2019.06.04。
我修改了代码，但仍然出现错误：
try {
FileInputStream file = new FileInputStream(GlobalVariables.XLSM);
XSSFWorkbook workbook = new XSSFWorkbook(file);
XSSFSheet sheet = workbook.getSheetAt(0);
XSSFRow row = sheet.createRow(recordcount+4);
Cell cell;
cell = row.createCell(GlobalVariables.testID);
cell.setCellValue(recordcount+1);
file.close();
FileOutputStream out = new FileOutputStream(new File(GlobalVariables.XLSM));
workbook.write(out);
out.flush();
out.close();
workbook.close();
System.out.println("Data was written");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
错误消息：
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<recoveryLog xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
<logFileName>error066080_01.xml</logFileName>
<summary>Error in file (C:\_privat\completeReport.xlsm)</summary>
<removedRecords>
<removedRecord>/xl/worksheets/sheet1.xml</removedRecord>
<removedRecord>/xl/calcChain.xml</removedRecord>
</removedRecords>
</recoveryLog>
答案 0 :(得分：1)
几乎每次您在打开由代码创建的工作簿时遇到错误时，原因都是某些未正确关闭的资源。不幸的是，我经历了很多次；-）
在我的情况下，我可以通过以下一系列操作（订单事项）解决问题：
workbook.write(out); FileOutputStream清空所有使用的缓冲区：out.flush(); FileOutputStream：out.close(); workbook.close(); 这是我将缺少的操作添加到您的代码中的方式：
try {
Workbook workbook;
workbook = new XSSFWorkbook(OPCPackage.open(GlobalVariables.XLSM));
Sheet sheet = workbook.getSheetAt(0);
Row row = sheet.createRow(recordcount + 5);
Cell cell;
cell = row.createCell(GlobalVariables.testID);
cell.setCellValue(recordcount);
FileOutputStream out = new FileOutputStream(new File(File));
// 1. write the workbook
workbook.write(out);
// 2. force the FileOutputStream to write everything out before closing it
out.flush();
// 3. then close the FileOutputStream
out.close();
// 4. finally close the workbook
workbook.close();
System.out.println("Data was written in XLSM");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (InvalidFormatException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
请注意，不一定总是需要刷新
FileOutputStream，但是在一些有关apache-poi的最佳实践教程中已经提到过，所以我决定在代码中使用它。
这对我有用，我希望对您也一样。
编辑（OP在下面的注释中要求我提供示例代码）
这是读取和扩展XSSFWorkbook的独立示例。全部都在main方法中，但至少已注释;-)
您必须更改工作簿的路径，此示例中的工作簿基本上是String，之后变成java.nio.Path。
public class PoiMain {
public static void main(String[] args) {
/*
* Setup:
* An existing xlsx file with a first sheet containing 6 columns and 1 row.
* The row has 6 filled cells with the values
* cell 1 (index 0): There
* cell 2 (index 1): is
* cell 3 (index 2): a
* cell 4 (index 3): house
* cell 5 (index 4): in
* cell 6 (index 5): New Orleans
*
* Task:
* Write the words "they", "call", "it", "the", "rising", "sun"
* in the cells below.
*/
// define the (correct) path to the workbook
String pathToFile = "Y:\\our\\path\\to\\the\\Test-Workbook.xlsx"; // you can use an xlsm here, too
// create a Path object
Path filePath = Paths.get(pathToFile);
// declare a workbook
XSSFWorkbook workbook;
try {
/*
* READING from the .xlsx file:
*/
FileInputStream in = new FileInputStream(filePath.toFile());
workbook = XSSFWorkbookFactory.createWorkbook(in);
XSSFSheet sheet = workbook.getSheetAt(0);
// read all the cells of the first row and print their content
for (int i = 0; i < sheet.getPhysicalNumberOfRows(); i++) {
XSSFRow row = sheet.getRow(i);
for (int j = 0; j < row.getPhysicalNumberOfCells(); j++) {
XSSFCell cell = row.getCell(j);
System.out.println(cell.getStringCellValue());
}
}
/*
* WRITING to the .xlsx file already read
*/
// create some meaningful words to be added to some cells in the workbook
List<String> wordsToBeWritten = Arrays.asList("they", "call", "it", "the", "rising", "sun");
FileOutputStream out = new FileOutputStream(filePath.toAbsolutePath().toString());
sheet = workbook.getSheetAt(0);
XSSFRow row = sheet.createRow(sheet.getPhysicalNumberOfRows());
// create new cells and write the words into them
for (int i = 0; i < wordsToBeWritten.size(); i++) {
XSSFCell cell = row.createCell(i);
cell.setCellValue(wordsToBeWritten.get(i));
}
// close the FileInputStream
in.close();
// write the workbook using the FileOutputStream
workbook.write(out);
// force the FileOutputStream to write everything until it is empty
out.flush();
// close the FileOutputStream
out.close();
// close the workbook.
workbook.close();
} catch (FileNotFoundException e) {
System.err.println(
"The file \"" + filePath.toAbsolutePath().toString() + "\" could not be found.");
e.printStackTrace();
} catch (IOException e) {
System.err.println("Error while reading the file \"" + filePath.toAbsolutePath().toString() + "\"");
e.printStackTrace();
} catch (InvalidFormatException e) {
System.out.println(
"The file \"" + filePath.toAbsolutePath().toString() + "\" has an invalid format(ting)");
e.printStackTrace();
} catch (EmptyFileException e) {
System.err.println("The supplied file \"" + filePath.toAbsolutePath().toString() + "\" is empty.");
e.printStackTrace();
}
}