添加自定义注解
package org.book.configuration.aop; import java.lang.annotation.*; @Documented @Target(ElementType.METHOD) @Retention(RetentionPolicy.RUNTIME) public @interface NoCheckLogin { }
创建一个SpringMvcHandler 类,继承HandlerInterceptorAdapter
package org.book.configuration.Handler; import com.alibaba.fastjson.JSONObject; import lombok.extern.slf4j.Slf4j; import org.book.common.JsonResult; import org.book.configuration.aop.NoCheckLogin; import org.springframework.web.method.HandlerMethod; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.PrintWriter; import java.lang.reflect.Method; @Slf4j public class SpringMvcHandler extends HandlerInterceptorAdapter { public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3) throws Exception { } public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3) throws Exception { } public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { HandlerMethod hm = null; Method method = null; if(handler instanceof HandlerMethod) { hm = (HandlerMethod) handler; method = hm.getMethod();// 获取方法 } else { return true; } // 该方法是否添加 允许未登录访问注解 if (method !=null && method.isAnnotationPresent(NoCheckLogin.class)) { // 不拦截 return true; } String name = (String) request.getSession().getAttribute("user"); if (name != null) { return true; } else { response.setCharacterEncoding("UTF-8"); response.setContentType("application/json; charset=utf-8"); PrintWriter out = null; try { out = response.getWriter(); out.append(new JSONObject().toJSONString(JsonResult.renderFail("用户未登录")) ); }catch (Exception e){ out = response.getWriter(); out.append(new JSONObject().toJSONString(JsonResult.renderError("后台出错"))); log.info(e.getStackTrace().toString()); } return false; } } }
被@NoLoginCheck注解的方法不会被拦截在springmvc配置文件配置拦截路径和排除路径
<mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/**"/> <mvc:mapping path="/"/> <mvc:mapping path="/index.jsp"/> <mvc:exclude-mapping path="/assets/**"/> <mvc:exclude-mapping path="/images/**"/> <bean class="org.book.configuration.Handler.SpringMvcHandler"></bean> </mvc:interceptor> </mvc:interceptors>
1)预处理preHandle()方法
用户发送请求时,先执行preHandle()方法。会先按照顺序执行所有拦截器的preHandle方法,一直遇到return false为止,比如第二个preHandle方法是return false,则第三个以及以后所有拦截器都不会执行。若都是return true,则执行用户请求的url方法。
2)后处理postHandle()
方法调用了Service并返回ModelAndView,但未进行页面渲染,可以在这里继续修改ModelAndView
3)返回处理afterCompletion()
方法已经渲染了页面,在afterCompletion中,可以根据ex是否为null判断是否发生了异常,进行日志记录。注:一般使用preHandle这个拦截器进行预处理,对url进行请求拦截
Comments | 13,203 条评论
博客作者 Davidpleam
кайт школа хургада [url=https://t.me/ArtemZhvakin]кайт школа в хургаде египет[/url].
кайт хургада [url=https://t.me/ArtemZhvakin]кайт кэмп[/url].
Кайт сафари [url=https://t.me/ArtemZhvakin]кайт в хургаде[/url].
Присоединяйтесь к нам в Хургаде и станьте частью сообщества «Дети Ветра», где каждый найдет свое место под солнечным небом, а ветер станет вашим верным союзником в этом увлекательном путешествии. https://t.me/ArtemZhvakin
博客作者 canada pharmaceuticals online generic
Can you tell us more about this? I’d like to find out some additional information.
博客作者 canadian pharmaceuticals usa
Definitely consider that which you stated. Your favorite reason seemed to be at the web the simplest thing to be mindful of. I say to you, I certainly get irked while other people think about concerns that they just do not know about. You controlled to hit the nail upon the top and also defined out the whole thing without having side-effects , other folks could take a signal. Will probably be back to get more. Thanks
博客作者 canadian pharmacies-247
What’s up to all, how is the whole thing, I think every one is getting more from this website, and your views are nice designed for new users.
博客作者 canada pharmaceuticals online generic
Howdy fantastic website! Does running a blog such as this require a massive amount work? I have virtually no understanding of programming however I was hoping to start my own blog in the near future. Anyways, should you have any recommendations or techniques for new blog owners please share. I know this is off subject nevertheless I simply had to ask. Appreciate it!
博客作者 Rodchind
[url=https://torcatalog.com]Hidden Wiki Tor[/url]
[url=https://darknet2020.com]Dir Tor sites[/url]
博客作者 Lexaqyll
Возникла необходимость? Ознакомьтесь с широким спектром [url=https://evakuator-minsk-24.by]услуги эвакуатора[/url] для решения любых проблем на дороге.
博客作者 canada pharmaceuticals online generic
Good day! Do you use Twitter? I’d like to follow you if that would be okay. I’m definitely enjoying your blog and look forward to new updates.
博客作者 canadian pharmaceuticals for usa sales
I think this is among the most significant info for me. And i’m glad reading your article. But wanna remark on some general things, The site style is perfect, the articles is really excellent : D. Good job, cheers
博客作者 ExpertAcups
Приветствую
Наша компания проводит акцию по бесплатной приемке квартир у застройщика ООО СЗ ГРАНЕЛЬ СТОЛИЦА
в Москве и Московской области,
приемка для вас будет абсалютно бесплатна при заключении договора на взыскание компенсации за строительные недостатки,
за который вы оплачиваете только гонорар успеха и возмещение судебных расходов.
приемка квартиры в новостройке с отделкой
[url=https://moscow-priemka.ru/]помощь в приемке квартиры
приемка квартиры
приемка квартиры в новостройке
приемка квартиры в новостройке с отделкой
приемка квартиры москва
Как правильно принять квартиру от застройщика? [/url]
[url=https://moscow-priemka.ru/]Эксперт в области строительства[/url]
variant4
博客作者 Sahabet Giriş
Hi, just required you to know I he added your site to my Google bookmarks due to your layout. But seriously, I believe your internet site has 1 in the freshest theme I??ve came across.Seo Paketi Skype: ByuMuT@KRaLBenim.Com –– live:by_umut
博客作者 canadian pharmaceuticals online shipping
It’s the best time to make some plans for the future and it is time to be happy. I have read this post and if I could I desire to suggest you some interesting things or advice. Perhaps you could write next articles referring to this article. I want to read more things about it!
博客作者 国产线播放免费人成视频播放
Ddarbu kelapra çürpa only rape porn
博客作者 bycasino giriş
Thank you for great content. Hello Administ. Seo Paketi Skype: ByuMuT@KRaLBenim.Com –– live:by_umut
博客作者 bycasino giris
Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me.Seo Paketi Skype: ByuMuT@KRaLBenim.Com –– live:by_umut