设置request参数给定义的bean.txt

java开发中经常用到的代码

    /**
     * 设置request参数给定义的bean
     * 
     * @param bean 接受参数的对象
     * @param request HttpServletRequest请求
     * @return 赋值后的对象
     */
    public static Object setParaToUsr(Object bean, HttpServletRequest request) {
        if (request == null) {
            System.out.println("invalid request...");
            return bean;
        }
        try {
            Class objClass = bean.getClass();
            Field[] fields = objClass.getDeclaredFields();

            for (int i = 0; i < fields.length; i++) {
                String attribute = fields[i].getName();
                if (attribute.equals("ip")) {
                    PropertyUtils.setProperty(bean, attribute, request
                            .getRemoteAddr());
                    continue;
                }

                String value = request.getParameter(attribute);
                if (value != null && value.length() != 0) {
                    System.out.println("attribute " + attribute
                            + "'s value is:" + value);
                    PropertyUtils.setProperty(bean, attribute, value);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        return bean;
    }