ajax请求action，action无法获取值

想实现类似于京东分类筛选的，如图所示


打算用三个隐藏的input获取点击的标签的值，但是传到action的时候，无法获取到值T^T，typeid、categoryid均为0，即使在input中设置初始的value也没有用，求救
代码比较粗糙，逻辑性也不是很强，因为是新手，还请不要介意

页面代码

<form id="ajaxForm"  method="get">

      <input id="typeid" type="text" value=0 />

      <input id="categoryid" type="text" value=2 />

      <input id="language" type="text" value=""/>

  	</form>

	<ul class="select">

		<li class="select-list">

			<dl id="select1">

				<dt>成果类型：</dt>

				<dd class="select-all selected"><a href="javascript:Filter('typeid','0')" >全部</a></dd>

				<s:iterator value="listType" id="row">

				<dd>

         	 	 	<a href="javascript:Filter('typeid','<s:property value="#row.typeid"/>')" ><s:property value="#row.typename"/></a> 

		   		</dd>

		   		</s:iterator>

			</dl>

		</li>

		<li class="select-list">

			<dl id="select2">

				<dt>所属学科：</dt>

				<dd class="select-all selected"><a href="javascript:Filter('categoryid','0')" >全部</a></dd>

				<s:iterator value="listCate" id="row">

				<dd>

		 	 		<a href="javascript:Filter('categoryid','<s:property value="#row.categoryid"/>')"><s:property value="#row.categoryname" /></a> 

		 		</dd>

		 		</s:iterator>	

			</dl>

		</li>

		<li class="select-list">

			<dl id="select3">

				<dt>语言：</dt>

				<dd class="select-all selected"><a href="javascript:Filter('language','')">全部</a></dd>

				<dd><a href="javascript:Filter('language','中文')" >中文</a> </dd>

				<dd><a href="javascript:Filter('language','English')">English</a> </dd>

			</dl>

		</li>

		<li class="select-result">

			<dl>

				<dt>已选条件：</dt>

				<dd class="select-no">暂时没有选择过滤条件</dd>

			</dl>

		</li>

	</ul>	

	</div>

js代码

     function Filter(id, value){

         document.getElementById(id).value = value;

          // document.forms['ajaxForm'].submit();

          toPage(1);

          return false;

  	   } 

          //分页

          function toPage(index){

          	$.ajax({ 

          				url :"sList.action?pager.pageIndex"+index,  //后台处理程序  

          				data:{//设置数据源

                        	typeid:$("input[name=typeid]").val(),

                       	 	categoryid:$("input[name=categoryid]").val(),

                        	language:$("input[name=language]").val()

                    	},

          				

	  					type:"post",    //数据发送方式  

	          	        async:false,  

	                    dataType:"json",   //接受数据格式             

	                    error: function(){  

	                    	alert("服务器没有返回数据，可能服务器忙，请重试");  

                        }, 

                        

                        success: function(){  

                            //  var listArray = eval(json).titlelist;  

                                

                             $("#searchResult").html(data);

                         }   

            });

}

action代码

package com.action;



import javax.annotation.Resource;

import javax.servlet.http.HttpServletRequest;



import com.opensymphony.xwork2.ActionSupport;

import com.orm.Pager;

import com.service.ILiteratureService;



public class temp extends ActionSupport {

	

	private int typeid;

	private int categoryid;

	private String language;

	private Pager pager;

	

	@Resource(name="literatureService")

	private	ILiteratureService litService;



	 private static final long serialVersionUID = 1L;

     

	 private HttpServletRequest request;

	 private String result;



	 public void setServletRequest(HttpServletRequest arg0) {

		 this.request = arg0;

	 }

	 public String getResult() {

		 return result;

	 }

	 public void setResult(String result) {

		 this.result = result;

	 }

	 

	public String execute() throws Exception {

		try{

			int tid = Integer.parseInt(request.getParameter("typeid"));

			int cid = Integer.parseInt(request.getParameter("categoryid"));

			//String language = l.getLanguage();

			String lg = request.getParameter("language");

			pager = litService.search(pager.getPageIndex(), 5, tid, cid, lg);		

	        return "searchSUCCESS";

			} catch (Exception e) {

				e.printStackTrace();

				return ERROR;

			}

	}

	

	public int getTypeid() {

		return typeid;

	}

	public void setTypeid(int typeid) {

		this.typeid = typeid;

	}

	public int getCategoryid() {

		return categoryid;

	}

	public void setCategoryid(int categoryid) {

		this.categoryid = categoryid;

	}



	public Pager getPager() {

		return pager;

	}

	public void setPager(Pager pager) {

		this.pager = pager;

	}

	public String getLanguage() {

		return language;

	}

	public void setLanguage(String language) {

		this.language = language;

	}

}