java poi 创建新 excel写入的时候报错

浏览数：47 / 时间：2015年06月08日

String
 filePath ="FILES\\"

+filename<span></span>+ ".xls";

               File
 file = new

File(filePath);

               FileOutputStream
 out = new

FileOutputStream(filePath);

//            
 file = new File("filepath location");

                   FileInputStream
 fis=new

FileInputStream(file.getAbsolutePath());

              String[]
 test = (String [])ExcelInfo.toArray(new

String[0]);

             //创建excel文件对象 

              HSSFWorkbook
 wb = new

HSSFWorkbook(fis);

//           
 HSSFWorkbook wb = new HSSFWorkbook();

              //创建一个张表 

              HSSFSheet
 sheet = wb.getSheetAt(0);

我先创建一个excel，然后写入的时候运行程序报错帮忙看下，错误：

java.io.IOException: Unable to read entire header; 0 bytes read; expected 512 bytes
at org.apache.poi.poifs.storage.HeaderBlock.alertShortRead(HeaderBlock.java:226)
at org.apache.poi.poifs.storage.HeaderBlock.readFirst512(HeaderBlock.java:207)
at org.apache.poi.poifs.storage.HeaderBlock.<init>(HeaderBlock.java:104)
at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:138)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:327)
at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:308)
at com.CreateFiles.Excel.write2003Excel(Excel.java:32)
at com.CreateFiles.FilesCreate.main(FilesCreate.java:145)

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java poi 创建新 excel写入的时候报错