fileupload 上传出现这个错误
Blob blob=rs.getBlob("fileContent");
out.println(request.getParameter("ID"));
by=blob.getBytes(1,(int)(blob.length()));
by=blob.getBytes(1,(int)(blob.length()));这一条出现的,请帮忙解决哈
java.lang.IllegalArgumentException: more bytes requested than exist in blob.