ajax - Struts2 and servlet integration -


i getting data action class servlet adding data session.whenever clicking item in select list onchange event fired function invoked our servlet ok,whenever send second time request servlet not called why? , comparsion failed maintain previous values only.here sending request ajax.pls can 1 provide solution ?

ajax code

function verify_details() {     var resourceid=document.getelementbyid("res").value      var url="/eis10/resourcetest?resourceid="+resourceid;     ajax(url); }

action class code:

listresource=taskservice.getuserlist(taskid);         system.out.println("the list  of resources are::"+listresource);          httpsession session=request.getsession();         session.setattribute("listresource", listresource);

servletcode

protected void doget(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception  {      system.out.println("servlet called...........");      string resourceid=request.getparameter("resourceid");     boolean t=false;      system.out.println("your clicked id::"+resourceid);          httpsession session=request.getsession();         list l=(list)session.getattribute("listresource");            system.out.println("resource list in servlet:"+l);          if(l!=null)         {             system.out.println("the size of list::"+l.size());                iterator itr=l.iterator();             while(itr.hasnext())             {                 string s=itr.next().tostring();                 system.out.println("elements in list:"+s);                 if(s.equals(resourceid))                     t=true;                                               }               response.setcontenttype("text/html");             if (t) {                 response.getwriter().write("y");             } else {                 response.getwriter().write("n");              }         }     }    }

it's because browser returns contents cache @ second request. see http://spacebug.com/solving_browser_caching_problem_of_ajax-html/ solution, or use ajax library (jquery example) can handle you.

besides, if you're using struts, why use bare servlet handle ajax call? why don't use struts action?


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