jQuery ajax does not call Servlet -

struggling on 1 2nd day. have select-option form list of tags. want display articles database depending on chosen tag. have div "showarticles", in index.jsp, want show articles. using jquery , ajax purpose. wrote servlet called test output simple string, cant receive text, seems servlet never called. servlet in package called "servlets", using netbeans.

this form:

                            <select id="b_sub_tag" name="b_sub_tag">                                 <option value='${0}'>subject</option>                                 <c:foreach var="item" items="${subtaglist}">                                     <option value='${item}'>${item}</option>                                     <c:set var="i" value='${i+1}'> </c:set>                                 </c:foreach>                             </select> 

this jquery:

$(document).ready(function(){        $("#b_sub_tag").change(function(){            var option_value = $(this).children('option:selected').val();      $.ajax({                    type: "post",                    url: "test",                    data :"value="+option_value,                    success: function(html) {                                $("#showarticles").html(html);                    }            }); }); 

  });

this servlet:

@webservlet(name = "test", urlpatterns = {"/test"}) public class test extends httpservlet { protected void processrequest(httpservletrequest request, httpservletresponse response)         throws servletexception, ioexception {     response.setcontenttype("text/html;charset=utf-8");     printwriter out = response.getwriter();     try {         /* todo output page here. may use following sample code. */         //response.getwriter().write("omething");      } {                     out.close();     } }  @override protected void doget(httpservletrequest request, httpservletresponse response)         throws servletexception, ioexception {     processrequest(request, response); }  @override protected void dopost(httpservletrequest request, httpservletresponse response)         throws servletexception, ioexception {     processrequest(request, response);      response.getwriter().write("smething");  }  @override public string getservletinfo() {     return "short description"; }// </editor-fold> } 

ihave tried printwriter out = response.getwriter(); out.println("something");

as well, nothing. writing output in dopost(), tried write in in doget , processrequest, no luck.

anyone have idea why not work?

---

problem resolved. ve changed code follows:

 $.ajax({         url : "test",         type: 'get',         ***data: {value:option_value},***          error : function(jqxhr, textstatus, errorthrown) {             alert(textstatus);         },         success : function(html){            $("#showarticles").html(html);            }         }     }); 

servlet:

@override protected void doget(httpservletrequest request, httpservletresponse response)         throws servletexception, ioexception {     try {          final initialcontext context = new initialcontext();         statefulb = (statefulbeanremote)     context.lookup("java:comp/env/statefulbeanremote");           response.setcontenttype("text/plain");         response.setcharacterencoding("utf-8");         response.getwriter().write("a text");       } catch (namingexception ex) {         logger.getlogger(loadarticlesbytag.class.getname()).log(level.severe, null, ex);     } } 

problem resolved. ve changed code follows:

$.ajax({ url : "test", type: 'get', *data: {value:option_value},*

    error : function(jqxhr, textstatus, errorthrown) {         alert(textstatus);     },     success : function(html){        $("#showarticles").html(html);        }     } }); 

servlet:

@override protected void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception { try {

    final initialcontext context = new initialcontext();     statefulb = (statefulbeanremote)     context.lookup("java:comp/env/statefulbeanremote");       response.setcontenttype("text/plain");     response.setcharacterencoding("utf-8");     response.getwriter().write("a text");   } catch (namingexception ex) {     logger.getlogger(loadarticlesbytag.class.getname()).log(level.severe, null, ex); } 

}