model view controller - Spring MVC: how to download Excel from DB -

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i have problem spring mvc , excel. store excel file in database lob. part of entity database postgresql

    @lob     @column(name = "exel")     private string exel;

next db , user can download web page controller

@requestmapping(value = "/downloadexeltemplate.xls", method = requestmethod.get)     public void downloadexeltemplate(httpservletresponse response)             throws ioexception {         response.setcontenttype("application/x-msexcel");         exeldto exel = service.getexel(new long(1));         inputstream = new bytearrayinputstream(exel.getexel().getbytes());         bufferedwriter outex = new bufferedwriter(new filewriter("out.xls"));         outex.write(exel.getexel());         outex.close();         servletoutputstream out = response.getoutputstream();         out.write(exel.getexel().getbytes());         is.close();         out.close();     }

and not proper xls file bugs. please me. wrong? when file stream same effect.

so resolve problem, change type of data in hibernate entity to

@lob byte[] exeldata;

and work well. when there text file there no problem mapping @lob string connected ms office formats fails. learned how keep data file correctly.


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