1.后台如何获取 jquery get方式的ajax的参数

    protected void writeJSON(Object obj) {
        try {
            String json = mapper.writeValueAsString(obj);
            HttpServletResponse response = ServletActionContext.getResponse();
            response.setContentLength(json.getBytes(utf8).length);
            response.setContentType("application/json;charset=UTF-8");
            response.getWriter().write(json);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }
    }