Index.jsp
<a href="servlet/HelloServlet">servlet/HelloServlet</a><br>
<a href="<%=request.getContextPath() %>/servlet/HelloServlet">HelloServlet</a>
<a href="servlet/RouteServlet">路由跳转到test.jsp</a>
Servlet.java
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request,response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//request.getRequestDispatcher(request.getContextPath()+"/test.jsp").forward(request, response);
/* 只要当服务器内部跳转(request), 斜线指项目的根目录 */
// request.getRequestDispatcher("/test.jsp").forward(request, response);
/* 相对路径 */
// request.getRequestDispatcher("../test.jsp").forward(request, response);
// response.sendRedirect(request.getContextPath()+"/test.jsp");
}