{"id":1635,"date":"2017-07-11T17:38:16","date_gmt":"2017-07-11T09:38:16","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=1635"},"modified":"2017-07-14T14:00:23","modified_gmt":"2017-07-14T06:00:23","slug":"%e8%af%a6%e8%a7%a3spring-mvc%e4%b8%ad%e7%9a%84abstractcontroller","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=1635","title":{"rendered":"\u8be6\u89e3Spring MVC\u4e2d\u7684AbstractController"},"content":{"rendered":"<p>\n\t\u6211\u628aAbstractController\u5355\u72ec\u62bd\u51fa\u4e00\u7ae0\u6765\u8bb2\u3002\u5b83\u7684\u4f5c\u7528\u548c<a href=\"http:\/\/www.xttblog.com\/?tag=controller\" name=\"controller\" target=\"_blank\" title=\"controller\">Controller<\/a>\u7c7b\u4f3c\u3002\u67d0\u4e9b\u65f6\u5019\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5b83\u66ff\u4ee3Controller\u3002\n<\/p>\n<p>\n\tAbstractController\u662f\u4e00\u4e2a\u62bd\u8c61\u7c7b\uff0c\u5b83\u5b9e\u73b0\u4e86Controller\uff0c\u5e76\u7ee7\u627f\u4e86WebContentGenerator\uff08\u5177\u6709\u8be5\u7c7b\u7684\u7279\u6027\uff09\uff0c\u8be5\u7c7b\u6709\u5982\u4e0b\u5c5e\u6027\uff1a\n<\/p>\n<ul>\n<li>\n\t\tboolean synchronizeOnSession = false\uff1a\u8868\u793a\u8be5\u63a7\u5236\u5668\u662f\u5426\u5728\u6267\u884c\u65f6\u540c\u6b65session\uff0c\u4ece\u800c\u4fdd\u8bc1\u8be5\u4f1a\u8bdd\u7684\u7528\u6237\u4e32\u884c\u8bbf\u95ee\u8be5\u63a7\u5236\u5668\u3002\n\t<\/li>\n<\/ul>\n<p>\n\t<img decoding=\"async\" alt=\"Spring MVC \u6559\u7a0b\" src=\"http:\/\/img.bbs.csdn.net\/upload\/201707\/14\/1500011991_75134.jpg\" style=\"width: 860px;height: 502px\" \/>\n<\/p>\n<pre class=\"brush:java;\">\r\npublic ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {\r\n\t\/\/\u59d4\u6258\u7ed9WebContentGenerator\u8fdb\u884c\u7f13\u5b58\u63a7\u5236\r\n\tcheckAndPrepare(request, response, this instanceof LastModified);\r\n\t\/\/\u5f53\u524d\u4f1a\u8bdd\u662f\u5426\u5e94\u4e32\u884c\u5316\u8bbf\u95ee.\r\n\tif (this.synchronizeOnSession) {\r\n\t\t HttpSession session = request.getSession(false);\r\n\t\t if (session != null) {\r\n\t\t\t\tObject mutex = WebUtils.getSessionMutex(session);\r\n\t\t\t\tsynchronized (mutex) {\r\n\t\t\t\t\t   return handleRequestInternal(request, response);\r\n\t\t\t\t}\r\n\t\t }\r\n\t}\r\n\treturn handleRequestInternal(request, response);\r\n}<\/pre>\n<p>\n\t\u53ef\u4ee5\u770b\u51faAbstractController\u5b9e\u73b0\u4e86\u4e00\u4e9b\u7279\u6b8a\u529f\u80fd\uff0c\u5982\u7ee7\u627f\u4e86WebContentGenerator\u7f13\u5b58\u63a7\u5236\u529f\u80fd\uff0c\u5e76\u63d0\u4f9b\u4e86\u53ef\u9009\u7684\u4f1a\u8bdd\u7684\u4e32\u884c\u5316\u8bbf\u95ee\u529f\u80fd\u3002\u800c\u4e14\u63d0\u4f9b\u4e86handleRequestInternal\u65b9\u6cd5\uff0c\u56e0\u6b64\u6211\u4eec\u5e94\u8be5\u5728\u5177\u4f53\u7684\u63a7\u5236\u5668\u7c7b\u4e2d\u5b9e\u73b0handleRequestInternal\u65b9\u6cd5\uff0c\u800c\u4e0d\u518d\u662fhandleRequest\u3002\n<\/p>\n<p>\n\t\u4e0b\u9762\u6211\u5b66\u4e60\u5b66AbstractController\u7684\u4f7f\u7528\u65b9\u6cd5\u3002\n<\/p>\n<p>\n\t\u9996\u5148\u8ba9\u6211\u4eec\u4f7f\u7528AbstractController\u6765\u91cd\u5199\u524d\u9762\u8bb2\u8fc7\u7684HelloWorldController\uff1a\n<\/p>\n<pre class=\"brush:java;\">\r\npublic class HelloWorldController extends AbstractController {\r\n\t@Override\r\n\tprotected ModelAndView handleRequestInternal(HttpServletRequest req, HttpServletResponse resp) throws Exception {\r\n\t\t\/\/1\u3001\u6536\u96c6\u53c2\u6570\r\n\t\t\/\/2\u3001\u7ed1\u5b9a\u53c2\u6570\u5230\u547d\u4ee4\u5bf9\u8c61\r\n\t\t\/\/3\u3001\u8c03\u7528\u4e1a\u52a1\u5bf9\u8c61\r\n\t\t\/\/4\u3001\u9009\u62e9\u4e0b\u4e00\u4e2a\u9875\u9762\r\n\t\tModelAndView mv = new ModelAndView();\r\n\t\t\/\/\u6dfb\u52a0\u6a21\u578b\u6570\u636e \u53ef\u4ee5\u662f\u4efb\u610f\u7684POJO\u5bf9\u8c61\r\n\t\tmv.addObject(&quot;message&quot;, &quot;Hello World!&quot;);\r\n\t\t\/\/\u8bbe\u7f6e\u903b\u8f91\u89c6\u56fe\u540d\uff0c\u89c6\u56fe\u89e3\u6790\u5668\u4f1a\u6839\u636e\u8be5\u540d\u5b57\u89e3\u6790\u5230\u5177\u4f53\u7684\u89c6\u56fe\u9875\u9762\r\n\t\tmv.setViewName(&quot;hello&quot;);\r\n\t\treturn mv;\r\n\t}\r\n}<\/pre>\n<p>\n\t\u7136\u540e\u5728xml\u4e2d\u8fdb\u884c\u914d\u7f6e\uff1a\n<\/p>\n<pre class=\"brush:xml;\">\r\n&lt;!&mdash; \u5728chapter4-servlet.xml\u914d\u7f6e\u5904\u7406\u5668 --&gt;\r\n&lt;bean name=&quot;\/hello&quot; class=&quot;com.xttblog.web.controller.HelloWorldController&quot;\/&gt;<\/pre>\n<p>\n\t\u4ece\u5982\u4e0a\u4ee3\u7801\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff1a\n<\/p>\n<ol>\n<li>\n\t\t\u7ee7\u627fAbstractController\n\t<\/li>\n<li>\n\t\t\u5b9e\u73b0handleRequestInternal\u65b9\u6cd5\u5373\u53ef\u3002\n\t<\/li>\n<\/ol>\n<h2>\n\t\u76f4\u63a5\u901a\u8fc7response\u5199\u54cd\u5e94<br \/>\n<\/h2>\n<p>\n\t\u5982\u679c\u6211\u4eec\u60f3\u76f4\u63a5\u5728\u63a7\u5236\u5668\u901a\u8fc7response\u5199\u51fa\u54cd\u5e94\u5462\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5e2e\u6211\u4eec\u9610\u8ff0\uff1a\n<\/p>\n<pre class=\"brush:java;\">\r\npublic class HelloWorldWithoutReturnModelAndViewController extends AbstractController {\r\n\t@Override\r\n\tprotected ModelAndView handleRequestInternal(HttpServletRequest req, HttpServletResponse resp) throws Exception {\r\n\t\tresp.getWriter().write(&quot;Hello World!!&quot;);\t\t\r\n\t\t\/\/\u5982\u679c\u60f3\u76f4\u63a5\u5728\u8be5\u5904\u7406\u5668\/\u63a7\u5236\u5668\u5199\u54cd\u5e94 \u53ef\u4ee5\u901a\u8fc7\u8fd4\u56denull\u544a\u8bc9DispatcherServlet\u81ea\u5df1\u5df2\u7ecf\u5199\u51fa\u54cd\u5e94\u4e86\uff0c\u4e0d\u9700\u8981\u5b83\u8fdb\u884c\u89c6\u56fe\u89e3\u6790\r\n\t\treturn null;\r\n\t}\r\n}<\/pre>\n<pre class=\"brush:xml;\">\r\n&lt;!&mdash; \u5728chapter4-servlet.xml\u914d\u7f6e\u5904\u7406\u5668 --&gt;\r\n&lt;bean name=&quot;\/helloWithoutReturnModelAndView&quot; class=&quot;com.xttblog.web.controller.HelloWorldWithoutReturnModelAndViewController&quot;\/&gt;<\/pre>\n<p>\n\t\u4ece\u5982\u4e0a\u4ee3\u7801\u53ef\u4ee5\u770b\u51fa\u5982\u679c\u60f3\u76f4\u63a5\u5728\u63a7\u5236\u5668\u5199\u51fa\u54cd\u5e94\uff0c\u53ea\u9700\u8981\u901a\u8fc7response\u5199\u51fa\uff0c\u5e76\u8fd4\u56denull\u5373\u53ef\u3002\n<\/p>\n<h2>\n\t\u5f3a\u5236\u8bf7\u6c42\u65b9\u6cd5\u7c7b\u578b<br \/>\n<\/h2>\n<pre class=\"brush:xml;\">\r\n&lt;!&mdash; \u5728chapter4-servlet.xml\u914d\u7f6e\u5904\u7406\u5668 --&gt;\r\n&lt;bean name=&quot;\/helloWithPOST&quot; class=&quot;com.xttblog.web.controller.HelloWorldController&quot;&gt;\r\n        &lt;property name=&quot;supportedMethods&quot; value=&quot;POST&quot;&gt;&lt;\/property&gt;\r\n&lt;\/bean&gt;<\/pre>\n<p>\n\t\u4ee5\u4e0a\u914d\u7f6e\u8868\u793a\u53ea\u652f\u6301POST\u8bf7\u6c42\uff0c\u5982\u679c\u662fGET\u8bf7\u6c42\u5ba2\u6237\u7aef\u5c06\u6536\u5230&ldquo;HTTP Status 405 &#8211; Request method &#39;GET&#39; not supported&rdquo;\u3002<br \/>\n\t&nbsp;<br \/>\n\t\u6bd4\u5982\u6ce8\u518c\/\u767b\u5f55\u53ef\u80fd\u53ea\u5141\u8bb8POST\u8bf7\u6c42\u3002\n<\/p>\n<p>\n\t\u5f53\u524d\u8bf7\u6c42\u7684session\u524d\u7f6e\u6761\u4ef6\u68c0\u67e5\uff0c\u5982\u679c\u5f53\u524d\u8bf7\u6c42\u65e0session\u5c06\u629b\u51faHttpSessionRequiredException\u5f02\u5e38\uff1a\n<\/p>\n<pre class=\"brush:xml;\">\r\n&lt;!&mdash; \u5728chapter4-servlet.xml\u914d\u7f6e\u5904\u7406\u5668 --&gt;\r\n&lt;bean name=&quot;\/helloRequireSession&quot; class=&quot;com.xttblog.web.controller.HelloWorldController&quot;&gt;\r\n        &lt;property name=&quot;requireSession&quot; value=&quot;true&quot;\/&gt;\r\n&lt;\/bean&gt;<\/pre>\n<p>\n\t\u5728\u8fdb\u5165\u8be5\u63a7\u5236\u5668\u65f6\uff0c\u4e00\u5b9a\u8981\u6709session\u5b58\u5728\uff0c\u5426\u5219\u629b\u51faHttpSessionRequiredException\u5f02\u5e38\u3002\n<\/p>\n<p>\n\t\u5173\u4e8eAbstractController\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\uff0c\u4e0b\u4e00\u7ae0\u6211\u5c06\u91cd\u70b9\u4ecb\u7ecd<a href=\"http:\/\/www.xttblog.com\/?tag=spring-mvc\" name=\"spring mvc\" target=\"_blank\" title=\"spring mvc\">Spring MVC<\/a> \u4e2d\u7684Session\u540c\u6b65\u7684\u77e5\u8bc6\u3002<\/p>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=1635\">\u8be6\u89e3Spring MVC\u4e2d\u7684AbstractController<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u6211\u628aAbstractController\u5355\u72ec\u62bd\u51fa\u4e00\u7ae0\u6765\u8bb2\u3002\u5b83\u7684\u4f5c\u7528\u548cController\u7c7b\u4f3c\u3002\u67d0\u4e9b\u65f6\u5019\u6211\u4eec\u4e5f\u53ef [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[1350,1360,1359],"class_list":["post-1635","post","type-post","status-publish","format-standard","hentry","category-java","tag-spring-mvc","tag-spring-mvc-"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1635","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1635"}],"version-history":[{"count":2,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1635\/revisions"}],"predecessor-version":[{"id":1638,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/1635\/revisions\/1638"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}