//inf1.setId(PubFunc.parseInt(request.getParameter("id")));  // 这句倒底要不要 
肯定是要的.
看你的 Trasaction 有没有 commit();不过
inf1.setTitle(new String(request.getParameter("title").getBytes("gb2312"), "iso-8859-1")); 应该是:inf1.setTitle(new String(request.getParameter("title").getBytes("iso8859-1"), "gb2312"));
把.