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protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");

    HttpSession sesion = request.getSession();
    PrintWriter out = response.getWriter();

    String num = request.getParameter("num");
    String password = request.getParameter("password");
    sesion.setAttribute("num", num);

    Queries sql = new Queries();
    if (sql.login(num, password)) {
        response.sendRedirect("private.jsp");
    } else {
        request.setAttribute("error", "Error on login");
        RequestDispatcher dispatcher = 
        ServletContext().getRequestDispatcher("login.jsp"); // This line doesn't working
        dispatcher.forward(request, response);
    }

}

我有一个错误servletContext()。根据 Netbeans找不到符号。我想用参数重定向到login.jsp

4

2 回答 2

0

假设您HttpServlet正在扩展 servlet 上下文,使用getServletContext

RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("login.jsp");
于 2016-02-12T22:35:32.433 回答
0

您可以使用请求范围将其转发到 login.jsp,而不是采用 ServletContext ,下面是一个衬里代码。

request.getRequestDispatcher("login.jsp").forward(request,response);
于 2016-02-15T12:26:12.663 回答