springMVC接收数组参数

dd.do?titles[]=col1&titles[]=col2&titles[]=col3

var param = {titles:['col1','col2','col3']};
$.ajax({url:"dd.php"
    , type:"post"
    , data:param
    , async:false
    , dataType:"json"/**这个类型很重要 */ 
    ,cache:false
    , error:function (data) {
        rtnObj = data.responseText;
    }
    , beforeSend:function (XMLHttpRequest) {
        //ajaxStart();
    }
    , complete:function (XMLHttpRequest, textStatus) {
        //ajaxComplete();
    }
    , success:function (data) {
        rtnObj = data;
    }
});

RequestMapping(value="/save", method = RequestMethod.POST)
@ResponseBody
public String save(@RequestParam(value = "titles[]") String[] titles){
    System.out.println(titles);
    return null;
}