request.setCharacterEncoding("UTF-8");
out.flush();
out.close();
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.print("失败");out.flush();
out.close();
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.print("失败");