You are mapping your AddComment request to be /servlets/AddComment but
making AJAX request to "AddComment".
Probably changing $.post to this will help:
$.post("/servlets/AddComment", function(data){
Unless the current page is also in /servlets.
PS. You might find $.getJSON() method useful
(http://docs.jquery.com/Ajax/jQuery.getJSON).
----
Read jQuery HowTo Resource - http://jquery-howto.blogspot.com
2009/3/23 Michael <lifeng_c...@126.com>:
>
> It takes me almost half a day , but I haven't solve it ,I don't know
> why .
> I would be much appreciate for your help...
>
> $(document).ready(function(){
>
> alert("can show");
>
> $("#button").click(function(){
>
> alert("when click button , can show ");
>
> $.post("AddComment",null,function(data){ //
> AddComment is a servlet name
>
> alert("here can't show");
>
> },"json");
> });
> });
>
> servlet ,root ,"servlets/AddComment",
>
> public void doPost(HttpServletRequest request, HttpServletResponse
> response)
> throws ServletException, IOException {
>
> System.out.println("here can't show，that is ,the method
> $.post does not work");
> }
>
> servlet config in web.xml:
> <servlet>
> <servlet-name>AddComment</servlet-name>
> <servlet-class>servlets.AddComment</servlet-class>
> <load-on-startup>1</load-on-startup>
> </servlet>
> <servlet-mapping>
> <servlet-name>AddComment</servlet-name>
> <url-pattern>/servlets/AddComment</url-pattern>
> </servlet-mapping>
>
