Servlet问题：forward跳转后，getAttribute无法读取
我有两个Servlet文件：req和rep; 在req中，用 request.getRequestDispatcher("rep").forward(request, response),跳转到了rep; 但是在rep中无法取出request中的数据。在req中，代码如下：
程序代码： public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
request.setAttribute("aa","dp");
request.getRequestDispatcher("rep").forward(request, response);
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}在req中，代码如下:
程序代码： public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.println("跳转到RepServlet");
String ss = (String) request.getAttribute("aa");
System.out.println(ss);
if (ss == null) {
out.println("跳转不能从请求获得数据");
}else {
out.println(ss);
}
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}[ 本帖最后由 Alen0128 于 2011-11-3 19:20 编辑 ]
