protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
//req.setCharacterEncoding("utf-8");只支持post
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
PrintWriter out=resp.getWriter();
out.println(new String(req.getParameter("id").getBytes("iso8859-1"),"gbk") );
out.flush();
out.close();
}原文:http://blog.csdn.net/zhanyan_x/article/details/18321013