可以用其他信息包裹员工信息，然后用js获取这些标签的值。但是，这样做不好，应为表单结构中有一个method属性，可以规定数据传输的方式是post还是get。

可以啊！用ajax异步，直接在js里面：
    <script type="text/javascript">
        document.getElementById("ll").onblur = function () {
            var request;
            if (window.XMLHttpRequest) {                                //如果支持ajax
                request = new XMLHttpRequest();
            } else {
                request = new ActiveXObject("Microsoft.XMLHTTP");
            }
            request.open("post", "jie", true);                              //向服务器发送请求
            request.setRequestHeader("content-type","application/x-www-form-urlencoded");
            request.send("name="+document.getElementById("ll").value+"");            
            request.onreadystatechange=function(){
              if(request.readyState==4&&request.status==200){                //请求成功和响应成功
                 alert(request.responseText);                               //得到数据
              }
            }
        }
        

    </script>

jsp代码：

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        PrintWriter out=response.getWriter();
        out.print("你好");
        out.flush();
        out.close();
    }