前端JS  
$.ajax({
        type: 'post',
        url: 'http://localhost:8080/web/plan/getProcess2',
        data: {planId: planId, planName: ""},
        beforeSend: function (XMLHttpRequest) {
           
        },
        success: function (data, status) {
            alert("msg: " + data.msg);
        },
        complete: function (XMLHttpRequest, textStatus) {

        },
        error: function () {

        }
    });
 

後臺Controller

@ApiOperation(value = "test", notes = "test")
    @RequestMapping(value = "/getProcess2", method = RequestMethod.POST)
    @ResponseBody
    public Map getProcessValues2(CheckStockPlan checkStockPlan) {
        Map<String, Object> map = new HashMap<>();
        //
        map.put("msg", "我是後臺來的資料");

        System.out.println("計劃單號:  " + checkStockPlan.toString());

        return map;
    }