Javascript中window.location无法跳转

我使用的是SpringMVC，在Javascript中，写了一句
window.location = "ExpInfo/addExtract?ids=" + ids;
这是后台Controller的方法

 @RequiresPermissions("expertinfo:expInfo:view")
    @RequestMapping(value = "/addExtract")
    public String addExtract(HttpServletRequest request){
        expInfoService.addExtract(request.getParameter("ids"));
        System.out.println(request.getParameter("ids"));
        return "modules/expertinfo/expExtractList";
    }

但是无法跳转到后台的这个方法啊，求解答