我正在尝试读取Excel工作簿(.xlsx
),但程序刚刚在初始化Workbook
时停止。我不确定发生了什么,因为它不会给出任何错误。程序暂停尝试读取Excel工作簿(Apache POI)
当我说暂停时,我的意思是程序只是暂停。它仍在运行,但我觉得它卡住了,不确定。
import java.io.File;
import java.io.FileInputStream;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class ExcelReader
{
private String excelFilePath;
private FileInputStream inputStream;
private Workbook workbook;
private Sheet sheet;
// Constructors
public ExcelReader() {
try {
// Get path to excel workbook and put in stream
excelFilePath = "/home/flow/project/mydata.xlsx";
inputStream = new FileInputStream(new File(excelFilePath));
// Get type of workbook (Excel 2003 or Excel 2007+)
workbook = getWorkbook();
} catch (Exception e) {
e.printStackTrace();
}
}
// Get type of workbook (Excel 2003 or Excel 2007+)
private Workbook getWorkbook() {
Workbook work = null;
try {
if(excelFilePath.endsWith("xlsx")) {
System.out.println("In firstIf"); // Prints this
work = new XSSFWorkbook(inputStream); // Gets stuck here
System.out.println("After XSSF"); // Never prints this
}
else if(excelFilePath.endsWith("xls")) {
work = new HSSFWorkbook(inputStream);
}
else
throw new IllegalArgumentException("The specified file is not an Excel file");
} catch (Exception e) {
e.printStackTrace();
}
return work;
}
}
我在做什么错了?为什么程序不能移动到下一行?
你是否试图等待,如果是的话,你等了多少时间? – 2016-06-21 16:41:04
我等了30多分钟,程序没有做任何事情。 – syy
尝试生成线程转储(例如,请参阅https://confluence.atlassian.com/adminjiraserver071/generating-a-thread-dump-802593021.html)并发布输出。另外请注意,这个问题可能是其他程序“锁定”文件 – 2016-06-21 16:43:44