前台参数杂乱，后台如何接收数据

<form id="formData" action="${pageContext.request.contextPath}/./." method="post">

</form>


function postData(){

//接收form表单中的数据
var params = $("#formData").serializeArray();
$.param(params);

//ajax传递且携带数据
$.ajax({

url:"",
type:"post",
data:"params",
dataType:"json",
success:function(ret,status){

//书写成功事件
}
})

}
  
  
  
 //后台接受参数
public Map<String,List<Map>> test (HttpServletRequest request){

Enumeration enu = request.getParameterNames();
HashMap map = new HashMap();

while(enu.hasMoreElements()){

String paraName = (String)enu.nextElement();
map.put(paraName,request.getParameter(paraName));
}
}