使用spring mvc 上传文件。POI 在linux 64位下解析不了excel2007文件。而win7 32位下没问题。使用wps创建的excel都没问题。经过调试发现window下,上传文件的时候文件头是847d1caa，当写入本地再读取后会将文件头改为504b0304（zip格式），所以可以正常运行。但linux下再读取文件头也不会变，导致POI识别不了。代码如下：
@RequestMapping(value = "uploadPriceXlsFile", method = RequestMethod.POST)
public @ResponseBody String upload(HttpServletRequest req, HttpServletResponse resp
) throws Exception
{
boolean isMultipart = ServletFileUpload.isMultipartContent(req);
HashMap request = new HashMap();
if (isMultipart) {
DiskFileItemFactory factory = new DiskFileItemFactory(1024 * 1024 * 20, null);
ServletFileUpload upload = new ServletFileUpload(factory);
upload.setHeaderEncoding("UTF-8");
upload.setSizeMax(1024 * 1024 * 20);
List<FileItem> fileItems = upload.parseRequest(req);
Iterator<FileItem> iter = fileItems.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (item.isFormField()) {
String name = item.getFieldName();
String value = item.getString("UTF-8");
request.put(name,value);
} else {
String filename = item.getName();
byte b[]=item.get();
for(int i=0;i<5;i++){
logger.debug(b[i]+"------------------------------");
}
//文件头显示为847d1caa byte[-124,125,28,-86,123]
logger.debug(Test.bytesToHexString(b));
String realPath = req.getSession().getServletContext().getRealPath("/WEB-INF/upload");
//File uploadFile = new File(realPath+"/"+filename);
FileUtils.copyInputStreamToFile(item.getInputStream(), new File(realPath,filename));
File uploadFile = new File(realPath+"/"+filename);
InputStream in=new FileInputStream(uploadFile);
in.read(b);
logger.debug(b[0]+"---"+b[1]+"---"+b[2]);
//window服务器则会变成504b0304 byte[80.75.3] <span></span> logger.debug(Test.bytesToHexString(b));
logger.debug("编码格式"+" "+System.getProperty("file.encoding"));
return memberService.uploadPriceXLS(in,filename);
}
}
}
文件头847d1caa（对应byte[-124,125,28,-86,123..]）是啥文件？ 为啥win7读出来文件头就变504b0304（zip格式 对应byte[80.75.3....]） ，而linux则不会改变报以下错误（版本不支持） exception:org.apache.poi.openxml4j.exceptions.InvalidFormatException: Package should contain a content type part [M1.13]
请各位大侠帮帮忙，谢谢
