{"id":1218,"date":"2023-05-28T04:10:16","date_gmt":"2023-05-27T20:10:16","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=1218"},"modified":"2023-05-28T04:10:16","modified_gmt":"2023-05-27T20:10:16","slug":"spring%e4%b8%ad%e8%bf%87%e6%bb%a4%e5%99%a8filter%e5%92%8c%e6%8b%a6%e6%88%aa%e5%99%a8interceptor%e7%9a%84%e5%8c%ba%e5%88%ab%e5%92%8c%e8%81%94%e7%b3%bb","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/spring\/spring%e4%b8%ad%e8%bf%87%e6%bb%a4%e5%99%a8filter%e5%92%8c%e6%8b%a6%e6%88%aa%e5%99%a8interceptor%e7%9a%84%e5%8c%ba%e5%88%ab%e5%92%8c%e8%81%94%e7%b3%bb\/","title":{"rendered":"Spring\u4e2d\u8fc7\u6ee4\u5668(Filter)\u548c\u62e6\u622a\u5668(Interceptor)\u7684\u533a\u522b\u548c\u8054\u7cfb"},"content":{"rendered":"
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\u5728\u6211\u4eec\u65e5\u5e38\u7684\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u7528\u5230Filter\u548cInterceptor\u3002\u6709\u65f6\u540c\u4e00\u4e2a\u529f\u80fd\u3002Filter\u53ef\u4ee5\u505a\uff0cInterceptor\u4e5f\u53ef\u4ee5\u505a\u3002\u6709\u65f6\u5c31\u9700\u8981\u8003\u8651\u4f7f\u7528\u54ea\u4e00\u4e2a\u6bd4\u8f83\u597d\u3002\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u4e8c\u8005\u7684\u533a\u522b\u548c\u8054\u7cfb\u3002\u5e0c\u671b\u7ed9\u5927\u5bb6\u8fdb\u884c\u9009\u62e9\u7684\u65f6\u5019\uff0c\u63d0\u4f9b\u4e00\u4e9b\u5e2e\u52a9<\/p>\n<\/blockquote>\n

Filter \u548c Interceptor \u7684\u533a\u522b<\/h1>\n

Filter<\/h3>\n

\u8fc7\u6ee4\u5668(Filter)\u662f\u5728\u8bf7\u6c42\u8fdb\u5165Tomcat\u5bb9\u5668\u4e4b\u540e\uff0c\u8bf7\u6c42\u8fdb\u5165Servlet\u4e4b\u524d\u6267\u884c\u3002Filter\u662fServlet\u89c4\u8303\u89c4\u5b9a\u7684\uff0c\u53ea\u80fd\u7528\u4e8eweb\u7a0b\u5e8f\u4e2d\u3002<\/p>\n

Interceptor<\/h3>\n

\u62e6\u622a\u5668(Interceptor)\u662f\u5728Servlet\u548cController\u63a7\u5236\u5668\u4e4b\u95f4\u6267\u884c\u3002Interceptor\u662fSpringframeWork\u4e2d\u89c4\u5b9a\u7684\u3002<\/p>\n

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    Interceptor\u662f\u57fa\u4e8ejava\u7684\u53cd\u5c04\u673a\u5236\u7684\uff0c\u800cFilter\u662f\u57fa\u4e8e\u51fd\u6570\u56de\u8c03\u3002<\/p>\n<\/li>\n

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    Interceptor\u4e0d\u4f9d\u8d56\u4e0eservlet\u5bb9\u5668\uff0cFilter\u4f9d\u8d56\u4e0eservlet\u5bb9\u5668\u3002<\/p>\n<\/li>\n

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    Interceptor\u53ea\u80fd\u5bf9action\u8bf7\u6c42\u8d77\u4f5c\u7528\uff0c\u800cFilter\u5219\u53ef\u4ee5\u5bf9\u51e0\u4e4e\u6240\u6709\u7684\u8bf7\u6c42\u8d77\u4f5c\u7528\u3002<\/p>\n<\/li>\n

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    Interceptor\u53ef\u4ee5\u8bbf\u95eeaction\u4e0a\u4e0b\u6587\u3001\u503c\u6808\u91cc\u7684\u5bf9\u8c61\uff0c\u800cFilter\u4e0d\u80fd\u8bbf\u95ee\u3002<\/p>\n<\/li>\n

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    Interceptor\u4ee5\u83b7\u53d6IOC\u5bb9\u5668\u4e2d\u7684\u5404\u4e2abean\uff0c\u800c\u8fc7\u6ee4\u5668\u5c31\u4e0d\u884c\uff0c\u8fd9\u70b9\u5f88\u91cd\u8981\uff0c\u5728\u62e6\u622a\u5668\u91cc\u6ce8\u5165\u4e00\u4e2aservice\uff0c\u53ef\u4ee5\u8c03\u7528\u4e1a\u52a1\u903b\u8f91\u3002\u62e6\u622a\u5668\u53ef\u4ee5\u83b7\u53d6ioc\u4e2d\u7684service bean\u5b9e\u73b0\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n<\/li>\n<\/ul>\n

    Spring MVC\u4e2d\u6bcf\u4e2a\u63a7\u5236\u5668\u4e2d\u53ef\u4ee5\u5b9a\u4e49\u591a\u4e2a\u8bf7\u6c42\u5904\u7406\u65b9\u6cd5,\u6211\u4eec\u628a\u8fd9\u79cd\u8bf7\u6c42\u5904\u7406\u65b9\u6cd5\u7b80\u79f0\u4e3aAction<\/h6>\n

    Filter\u7684\u5b9e\u73b0<\/h2>\n

    \u81ea\u5df1\u7684filter<\/code>\u9700\u8981\u8981\u5b9e\u73b0javax.servlet.Filter<\/code>.<\/p>\n

    <\/span><\/code><\/pre>\n
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      import<\/span> javax.servlet.*;<\/span><\/code>import<\/span> java.io.IOException;<\/span><\/code>
      <\/span><\/code>public<\/span> class<\/span> Myfilter<\/span> implements<\/span> Filter<\/span> <\/span>{<\/span><\/code>    @Override<\/span><\/span><\/code>    public<\/span> void<\/span> init<\/span>(FilterConfig filterConfig)<\/span> throws<\/span> ServletException <\/span>{<\/span><\/code>        System.out.println(\"Myfilter init\"<\/span>);<\/span><\/code>    }<\/span><\/code>
      <\/span><\/code>    @Override<\/span><\/span><\/code>    public<\/span> void<\/span> doFilter<\/span>(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)<\/span> throws<\/span> IOException, ServletException <\/span>{<\/span><\/code>        System.out.println(\"Myfilter doFilter before\"<\/span>);<\/span><\/code>        filterChain.doFilter(servletRequest,servletResponse);<\/span><\/code>        System.out.println(\"Myfilter doFilter after\"<\/span>);<\/span><\/code>    }<\/span><\/code>
      <\/span><\/code>    @Override<\/span><\/span><\/code>    public<\/span> void<\/span> destroy<\/span>()<\/span> <\/span>{<\/span><\/code>        System.out.println(\"Myfilter destroy\"<\/span>);<\/span><\/code>    }<\/span><\/code>}<\/span><\/code><\/pre>\n<\/section>\n
      \u6ce8\u518cFilter\u5728web.xml\u4e2d<\/p>\n
      <\/span><\/code><\/pre>\n
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        <!-- \u6ce8\u518c\u8fc7\u6ee4\u5668 --><\/span><\/span><\/code>    <filter<\/span>><\/span><\/span><\/code>        <filter-name<\/span>><\/span>myfilter<\/filter-name<\/span>><\/span><\/span><\/code>        <filter-class<\/span>><\/span>com.hardy.config.Myfilter<\/filter-class<\/span>><\/span><\/span><\/code>    <\/filter<\/span>><\/span><\/span><\/code>    <filter-mapping<\/span>><\/span><\/span><\/code>        <filter-name<\/span>><\/span>myfilter<\/filter-name<\/span>><\/span><\/span><\/code>        <url-pattern<\/span>><\/span>\/*<\/url-pattern<\/span>><\/span><\/span><\/code>    <\/filter-mapping<\/span>><\/span><\/span><\/code><\/pre>\n<\/section>\n
        Interceptor\u7684\u5b9e\u73b0<\/h2>\n
        \u81ea\u5df1\u7684Interceptor<\/code>\u9700\u8981\u8981\u5b9e\u73b0org.springframe<\/code><\/p>\n
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          work.web.servlet.HandlerInterceptor.<\/span><\/code>import<\/span> org.springframework.web.servlet.HandlerInterceptor;<\/span><\/code>import<\/span> org.springframework.web.servlet.ModelAndView;<\/span><\/code>
          <\/span><\/code>import<\/span> javax.servlet.http.HttpServletRequest;<\/span><\/code>import<\/span> javax.servlet.http.HttpServletResponse;<\/span><\/code>
          <\/span><\/code>public<\/span> class<\/span> MyInterceptor<\/span> implements<\/span> HandlerInterceptor<\/span> <\/span>{<\/span><\/code>    @Override<\/span><\/span><\/code>    public<\/span> boolean<\/span> preHandle<\/span>(HttpServletRequest request, HttpServletResponse response, Object handler)<\/span> throws<\/span> Exception <\/span>{<\/span><\/code>        \/\/ \u5728\u62e6\u622a\u70b9\uff08Controller\u65b9\u6cd5\u5904\u7406\u4e4b\u524d\uff09\u6267\u884c\u62e6\u622a \u82e5\u8fd4\u56de\u7684\u662ffalse\u5219\u4e2d\u65ad\u6267\u884c \u53cd\u4e4b\u4ea6\u7136<\/span><\/span><\/code>        System.out.println(\"MyInterceptor preHandle\"<\/span>);<\/span><\/code>        return<\/span> HandlerInterceptor.super<\/span>.preHandle(request, response, handler);<\/span><\/code>    }<\/span><\/code>
          <\/span><\/code>    @Override<\/span><\/span><\/code>    public<\/span> void<\/span> postHandle<\/span>(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView)<\/span> throws<\/span> Exception <\/span>{<\/span><\/code>        \/\/ \u5728\u5904\u7406\u8fc7\u7a0b\u4e2d\uff08Controller\u65b9\u6cd5\u5904\u7406\u5b8c\u4e4b\u540e  DispatcherServlet\u8fdb\u884c\u89c6\u56fe\u7684\u6e32\u67d3\u4e4b\u524d\uff09\u6267\u884c\u62e6\u622a<\/span><\/span><\/code>        System.out.println(\"MyInterceptor postHandle\"<\/span>);<\/span><\/code>        HandlerInterceptor.super<\/span>.postHandle(request, response, handler, modelAndView);<\/span><\/code>    }<\/span><\/code>
          <\/span><\/code>    @Override<\/span><\/span><\/code>    public<\/span> void<\/span> afterCompletion<\/span>(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)<\/span> throws<\/span> Exception <\/span>{<\/span><\/code>        \/\/ \u5728DispatcherServlet\u8fdb\u884c\u89c6\u56fe\u7684\u6e32\u67d3\u540e \u8fd4\u56de\u524d\u8fdb\u884c\u62e6\u622a<\/span><\/span><\/code>        System.out.println(\"MyInterceptor afterCompletion\"<\/span>);<\/span><\/code>        HandlerInterceptor.super<\/span>.afterCompletion(request, response, handler, ex);<\/span><\/code>    }<\/span><\/code>}<\/span><\/code><\/pre>\n<\/section>\n
          <\/code><\/p>\n
          \u6ce8\u518cInterceptor\u5728spring\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\uff08application.xml\uff09<\/p>\n
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                <!-- \u914d\u7f6e\u62e6\u622a\u5668 --><\/span><\/span><\/code>    <mvc:interceptors<\/span>><\/span><\/span><\/code>        <mvc:interceptor<\/span>><\/span><\/span><\/code>            <!-- \u62e6\u622a\u6240\u6709\u7684mvc\u63a7\u5236\u5668(Controller) --><\/span><\/span><\/code>            <mvc:mapping<\/span> path<\/span>=\"\/**\"<\/span>\/><\/span><\/span><\/code>            <!-- \u653e\u884c\u673a\u5236 \u6307\u5b9a\u5bf9\u67d0\u4e2a\u9875\u9762\u4e0d\u8fdb\u884c\u62e6\u622a --><\/span><\/span><\/code>            <!-- \u62e6\u622a\u5668\u53ea\u5bf9action\u8d77\u4f5c\u7528 \u56e0\u6b64\u586b\u5165\u7684\u4e0d\u662f\u9875\u9762\u8def\u5f84 \u800c\u662f\u65b9\u6cd5 --><\/span><\/span><\/code>            <mvc:exclude-mapping<\/span> path<\/span>=\"\/login\"<\/span>\/><\/span><\/span><\/code>            <!-- \u6307\u5b9a\u4f7f\u7528\u54ea\u4e2a\u62e6\u622a\u5668 --><\/span><\/span><\/code>            <bean<\/span> class<\/span>=\"com.hardy.config.MyInterceptor\"<\/span>\/><\/span><\/span><\/code>        <\/mvc:interceptor<\/span>><\/span><\/span><\/code>    <\/mvc:interceptors<\/span>><\/span><\/span><\/code>
            <\/span><\/code><\/pre>\n<\/section>\n
            <\/mp-style-type><\/p>\n
            \n
            \u672c\u7bc7\u6587\u7ae0\u6765\u6e90\u4e8e\u5fae\u4fe1\u516c\u4f17\u53f7:                 Java\u7f16\u7a0b\u6280\u672f\u6808              <\/p>\n<\/blockquote>\n<\/div>\n","raw":"","protected":false},"excerpt":{"rendered":"
            \u5728\u6211\u4eec\u65e5\u5e38\u7684\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u7528\u5230Filter\u548cInterceptor\u3002\u6709\u65f6\u540c\u4e00\u4e2a\u529f\u80fd\u3002Filter\u53ef\u4ee5\u505a\uff0cInterceptor …<\/p>\n","protected":false},"author":1,"featured_media":1216,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-1218","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-spring"],"post_thumbnail_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040244660-150x150.jpeg","content_first_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040246130.png","post_medium_image_300":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040244660-300x127.jpeg","post_thumbnail_image_624":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040244660-1024x434.jpeg","post_frist_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040246130.png","post_medium_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040244660-300x127.jpeg","post_large_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040244660-1024x434.jpeg","post_full_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040244660.jpeg","post_all_images":[{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040246130.png","id":"image0"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528040246130.png","id":"image1"}],"videoAdId":"","listAd":"0","listAdId":"","listAdEvery":6,"total_comments":0,"category_name":"Spring","post_date":"2023-05-27","like_count":"0","praiseWord":"\u9f13\u52b1","copyright_state":"","excitationAd":"0","rewardedVideoAdId":"","detailAdId":"","detailAd":"0","enterpriseMinapp":"0","audios":[],"postImageUrl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230519082947553.jpg","avatarurls":[],"related_posts":null,"pageviews":274,"next_post_id":1974,"next_post_title":"Spring IoC\u901a\u4fd7\u7684\u89e3\u91ca","previous_post_id":1153,"previous_post_title":"\u5229\u7528Spring\u6269\u5c55\u70b9\u6a21\u62dfFeign\u5b9e\u73b0\u8fdc\u7a0b\u8c03\u7528","_links":{"self":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/1218","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1218"}],"version-history":[{"count":0,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/1218\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media\/1216"}],"wp:attachment":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}