读取 Excel 文档时出现问题（Java 代码）
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Issue while reading Excel document (Java code)
提问by Vinayak Pahalwan
I have some Java code which reads the Excel data. On running the Java code, it's showing the following error. Help me resolve the same. Also, I need to know other method of reading .xlsxfile.
我有一些读取 Excel 数据的 Java 代码。在运行 Java 代码时，它显示以下错误。帮我解决同样的问题。另外，我需要知道读取.xlsx文件的其他方法。
(A small edit) how I can print rows with their respective columns. For example:
（一个小的编辑）我如何打印带有各自列的行。例如：
Age
19
20
21
Salary
35k
20k
40k
.
.
.
Exception in thread "main" org.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Office 2007+ XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF) at org.apache.poi.poifs.storage.HeaderBlock.(HeaderBlock.java:131) at org.apache.poi.poifs.storage.HeaderBlock.(HeaderBlock.java:104) at org.apache.poi.poifs.filesystem.POIFSFileSystem.(POIFSFileSystem.java:138) at org.apache.poi.hssf.usermodel.HSSFWorkbook.(HSSFWorkbook.java:322) at org.apache.poi.hssf.usermodel.HSSFWorkbook.(HSSFWorkbook.java:303) at ExcelRead.main(ExcelRead.java:18)
线程“main”org.apache.poi.poifs.filesystem.OfficeXmlFileException 中的异常：提供的数据似乎在 Office 2007+ XML 中。您正在调用处理 OLE2 Office 文档的 POI 部分。您需要在 org.apache.poi.poifs.storage.HeaderBlock.(HeaderBlock.java:131) at org.apache.poi.poifs.storage 调用 POI 的不同部分来处理此数据（例如 XSSF 而不是 HSSF） .HeaderBlock.(HeaderBlock.java:104) at org.apache.poi.poifs.filesystem.POIFSFileSystem.(POIFSFileSystem.java:138) at org.apache.poi.hssf.usermodel.HSSFWorkbook.(HSSFWorkbook.java:322)在 org.apache.poi.hssf.usermodel.HSSFWorkbook.(HSSFWorkbook.java:303) 在 ExcelRead.main(ExcelRead.java:18)
The Java code is as follows:
Java代码如下：
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Iterator;
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;
public class ExcelRead {
public static void main(String[] args) {
try {
FileInputStream file = new FileInputStream(new File("C:/Users/vinayakp/Desktop/Book.xlsx"));
HSSFWorkbook workbook = new HSSFWorkbook(file);
HSSFSheet sheet = workbook.getSheetAt(0);
Iterator<Row> rowIterator = sheet.iterator();
while(rowIterator.hasNext()) {
Row row = rowIterator.next();
Iterator<Cell> cellIterator = row.cellIterator();
while(cellIterator.hasNext()) {
Cell cell = cellIterator.next();
switch(cell.getCellType()) {
case Cell.CELL_TYPE_BOOLEAN:
System.out.print(cell.getBooleanCellValue() + "\t\t");
break;
case Cell.CELL_TYPE_NUMERIC:
System.out.print(cell.getNumericCellValue() + "\t\t");
break;
case Cell.CELL_TYPE_STRING:
System.out.print(cell.getStringCellValue() + "\t\t");
break;
}
}
System.out.println("");
}
file.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException ae) {
ae.printStackTrace();
}
}
}
回答by Mohammod Hossain
After deleting previous imports class then try to add
删除以前的导入类后，然后尝试添加
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.ss.usermodel.WorkbookFactory;
private static void read(String path){
Workbook workbook = null;
FileInputStream fis = null;
try {
File source = new File(path);
if(source.exists()){
fis = new FileInputStream(source);
workbook = WorkbookFactory.create(source);
}else{
JOptionPane.showMessageDialog(null, "File path is not exist.", "Error", JOptionPane.ERROR_MESSAGE);
}
Sheet sheet = null;
int lastRowNum = 0;
int numSheets = workbook.getNumberOfSheets();
for(int i = 0; i < numSheets; i++) {
sheet = workbook.getSheetAt(i);
if(sheet.getPhysicalNumberOfRows() > 0) {
lastRowNum = sheet.getLastRowNum();
int lastCellNum = 0;
for(Row row : sheet) {
Employee emp = new Employee();
int numOfCell = row.getPhysicalNumberOfCells();
System.out.println("numOfCell:: "+numOfCell);
String stringValues [] = new String[numOfCell];
for(Cell cell : row) {
// cell = row.getCell(cellIndex);
int cellIndex = cell.getColumnIndex();
logger.info("cellIndex:: "+ cellIndex);
switch (cell.getCellType()) {
case Cell.CELL_TYPE_FORMULA:
// printValue = "FORMULA value=" + cell.getCellFormula();
stringValues[cellIndex] = cell.getCellFormula();
break;
case Cell.CELL_TYPE_NUMERIC:
//printValue = "NUMERIC value=" + cell.getNumericCellValue();
System.out.println("Value is numeric:: "+ cell.getNumericCellValue());
stringValues[cellIndex] = String.valueOf(cell.getNumericCellValue());
break;
case Cell.CELL_TYPE_STRING:
// printValue = "STRING value=" + cell.getStringCellValue();
stringValues[cellIndex] = cell.getStringCellValue();
break;
case Cell.CELL_TYPE_BLANK:
// printValue = "STRING value=" + cell.getStringCellValue();
stringValues[cellIndex] = cell.getStringCellValue();
break;
default:
}
}
}
}
}
}
} catch (InvalidFormatException e) {
logger.error(e.getMessage());
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
logger.error(e.getMessage());
} catch (IOException e) {
logger.error(e.getMessage());
e.printStackTrace();
}
catch (Exception e) {
logger.error(e.getMessage());
e.printStackTrace();
}
finally {
if (fis != null) {
try {
fis.close();
fis = null;
} catch (IOException ioEx) {
logger.error(ioEx.getMessage());
}
}
}
}
回答by swamy
If you want to read a .xlsfile you must use HSSF(it supports only .xlsformat) but for .xlsxfiles you must use XSSFor another higher version API.
如果要读取.xls文件，则必须使用HSSF（它仅支持.xls格式），但对于.xlsx文件，则必须使用XSSF或其他更高版本的 API。
回答by Naveen Babu
you are using the wrong class for reading the file HSSFWorkbookis for old excel format. use XSSFWorkbookinstead
您使用错误的类来读取文件HSSFWorkbook是旧的 excel 格式。使用 XSSFWorkbook替代
Edited:copied from http://www.coderanch.com/t/463779/java/java/read-xlsx-sheet-Client-Side. did u do the same thing?
编辑：从http://www.coderanch.com/t/463779/java/java/read-xlsx-sheet-Client-Side复制。你做了同样的事情吗？
try {
System.out.println("destDir==> "+destDir);
XSSFWorkbook workBook = new XSSFWorkbook(destDir);
XSSFSheet sheet = workBook.getSheetAt(0);
totalRows = sheet.getPhysicalNumberOfRows();
System.out.println("total no of rows >>>>"+totalRows);
} catch (IOException e) {
e.printStackTrace();
}
Edit 2:Learn about apache POI from this link
编辑 2：从此链接了解 apache POI
