java - 添加文本 java requestDispatcher

Question

我想将用户引导回上一页，并在 url 中使用相同的 get

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

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

如何将电子邮件添加到网址？

Answer 1

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