添加文本java requestDispatcher

Question

我想让用户在url中使用相同的get返回到上一页。

if (somecheck) { 
 req.getRequestDispatcher("register.jsp?email="+req.getParameter("email")).forward(req, resp);
}

但是这会将用户定向到"/register.jsp"而不是"/register.jsp?email=testemail@mail.com"

如何将电子邮件添加到url？

Answer 1

多亏了Anton Dovzhenko，解决方案就是使用response.sendRedirect("register.jsp?email="+req.getParameter("email"));

Answer 2

ServletContext context = request.getServletContext();
String path = "/register.jsp?email="+request.getParameter("email");
RequestDispatcher rd = context.getRequestDispatcher(path);
rd.include(request, response);