import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
...

   @RequestMapping("/csvtest.csv")
   public void generateCSV(Map model,
	        HttpServletRequest req,
	        HttpServletResponse resp)
	        throws Exception     		
	{    
	   resp.setContentType("application/spc; charset=UTF-8");
	   resp.setHeader("Content-Disposition","inline;filename=rep.csv");
	   ServletOutputStream out = resp.getOutputStream();
	   out.println("THIS IS A TEST, test2");
	   out.flush();
	   out.close();
	   
	}