前台ajax传数组，后台java接收

后端

//添加

    @RequestMapping(value = "checkChoise")

    @ResponseBody

    ResultJson checkChoise(@RequestBody List<String> arr) {

        ResultJson resultJson = new ResultJson();

        System.out.println("str:"+arr);

        resultJson.setStatus(0);

        resultJson.setMessage("添加成功！");

        resultJson.setData(null);

        return resultJson;

    }

js

//某个角色函数

function comfirm(){

     //获取checkbox[name='check']的值

     var arr = new Array();

     $("input:checkbox[name='check']:checked").each(function(i){

           arr[i] = $(this).val();

     });

    $.ajax({

        type: "post",//注意不能用get

        dataType: 'json',

        url: "/checkChoise",

        contentType: 'application/json',//这个必须是这个格式

        data: JSON.stringify(arr),//前台要封装成json格式

        success: function (result) {

            if (result.status == 0) {

            }

            if (result.message != null) {

                layer.msg(result.message)

            }

        },

        error: function (XMLHttpRequest, textStatus, errorThrown) {

            layer.msg('{"status":"' + XMLHttpRequest.status + '","readyState":"' + XMLHttpRequest.readyState + '","textStatus":"' + textStatus + '","errorThrown":"' + errorThrown + '"}')

        }

    })

}