导出word格式文件，空格显示为口，回复内容中有returnContent字样，应该怎么修复

 /**
     * @Description:当天已办条数
     * @auther:
     * @date:
     */
    @ResponseBody
    @RequestMapping(value = {"loadHasCompletedFormDayCount", ""})
    public Integer loadHasCompletedFormDayCount(BusiForm busiForm, HttpServletRequest request, HttpServletResponse response, Model model) {
        User user = UserUtils.getUser();
        busiForm = getQueryCondition(busiForm, user);
        Integer count = busiFormService.searchHasCompletedBusiFormDayCount(busiForm.getLoginUserId());
        return count;
    }

    /**
     * @Description:本周已办条数
     * @auther:
     * @date:
     */
    @ResponseBody
    @RequestMapping(value = {"loadHasCompletedFormWeekCount", ""})
    public Integer loadHasCompletedFormWeekCount(BusiForm busiForm, HttpServletRequest request, HttpServletResponse response, Model model) {
        User user = UserUtils.getUser();
        busiForm = getQueryCondition(busiForm, user);
        Integer count = busiFormService.searchHasCompletedBusiFormWeekCount(busiForm.getLoginUserId());
        return count;
    }

    /**
     * @Description:本月已办条数
     * @auther:
     * @date:
     */
    @ResponseBody
    @RequestMapping(value = {"loadHasCompletedFormMonthCount", ""})
    public Integer loadHasCompletedFormMonthCount(BusiForm busiForm, HttpServletRequest request, HttpServletResponse response, Model model) {
        User user = UserUtils.getUser();
        busiForm = getQueryCondition(busiForm, user);
        Integer count = busiFormService.searchHasCompletedBusiFormMonthCount(busiForm.getLoginUserId());
        return count;
    }

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