{"id":169,"date":"2018-10-25T17:46:30","date_gmt":"2018-10-25T09:46:30","guid":{"rendered":"http:\/\/www.maoyunwang.top\/?p=169"},"modified":"2018-10-25T17:46:30","modified_gmt":"2018-10-25T09:46:30","slug":"servlet","status":"publish","type":"post","link":"https:\/\/blog.tongyunli.top\/?p=169","title":{"rendered":"Servlet"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>\u4e00\u3001\u4ec0\u4e48Servlet\uff1f<\/p>\n<p>servlet \u662f\u8fd0\u884c\u5728 Web \u670d\u52a1\u5668\u4e2d\u7684\u5c0f\u578b Java \u7a0b\u5e8f\uff08\u5373\uff1a\u670d\u52a1\u5668\u7aef\u7684\u5c0f\u5e94\u7528\u7a0b\u5e8f\uff09\u3002servlet \u901a\u5e38\u901a\u8fc7 HTTP\uff08\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae\uff09\u63a5\u6536\u548c\u54cd\u5e94\u6765\u81ea Web \u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u3002<\/p>\n<p><strong>1.1<\/strong><strong>\u3001\u7f16\u5199\u4e00\u4e2a<\/strong><strong>servlet<\/strong><strong>\u7a0b\u5e8f\uff1a<\/strong><\/p>\n<ul>\n<li>\u5199\u4e00\u4e2ajava\u7c7b\uff0c\u5b9e\u73b0servlet\u63a5\u53e3<\/li>\n<li>\u4fee\u6539xml\u6587\u4ef6\uff0c\u7ed9servlet\u63d0\u4f9b\u4e00\u4e2a\u53ef\u8bbf\u95ee\u7684URI\u5730\u5740<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>c\u3001\u90e8\u7f72\u5e94\u7528\u5230tomcat\u670d\u52a1\u5668<\/p>\n<p>D\u3001\u6d4b\u8bd5\uff1ahttp:\/\/locahost:8080\/day08_servlet\/demo1<\/p>\n<h1>\u4e8c\u3001\u6267\u884c\u8fc7\u7a0b<\/h1>\n<p>&nbsp;<\/p>\n<h1>\u4e09\u3001Servlet\u751f\u547d\u5468\u671f\uff08\u91cd\u8981\uff09<br \/>\n\u5b9e\u4f8b\u5316&#8211;&gt;\u521d\u59cb\u5316&#8211;&gt;\u670d\u52a1-&gt;\u9500\u6bc1<\/h1>\n<p>\u51fa\u751f\uff1a\uff08\u5b9e\u4f8b\u5316&#8211;&gt;\u521d\u59cb\u5316\uff09\u7b2c\u4e00\u6b21\u8bbf\u95ee\u5c31\u51fa\u751f\uff08\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff09<\/p>\n<p>\u6d3b\u7740\uff1a\uff08\u670d\u52a1\uff09\u5e94\u7528\u6d3b\u7740\uff0cservlet\u5c31\u6d3b\u7740<\/p>\n<p>\u6b7b\u4ea1\uff1a\uff08\u9500\u6bc1\uff09\u5e94\u7528\u5378\u8f7d\u4e86servlet\u5c31\u9500\u6bc1\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u5c0f\u77e5\u8bc6\uff1a<\/p>\n<p>\u5982\u4f55\u8ba9servlet\u5728\u670d\u52a1\u5668\u542f\u52a8\u65f6\u5c31\u521b\u5efa\u3002<\/p>\n<h1>\u56db\u3001Servlet\u7684\u4e09\u79cd\u521b\u5efa\u65b9\u5f0f<\/h1>\n<h2>4.1\u3001\u5b9e\u73b0javax.servlet.Servlet\u63a5\u53e3\uff08\u53c2\u89c1\uff1a\u7f16\u5199\u4e00\u4e2aservlet\u7a0b\u5e8f\uff1a\uff09<\/h2>\n<h2>4.2\u3001\u7ee7\u627fjavax.servet.GenericServlet\u7c7b(\u9002\u914d\u5668\u6a21\u5f0f)<\/h2>\n<h2>4.3\u3001\u7ee7\u627fjavax.servlet.http.HttpServlet\u7c7b\uff08\u6a21\u677f\u65b9\u6cd5\u8bbe\u8ba1\u6a21\u5f0f\uff09<\/h2>\n<p>(\u5f00\u53d1\u4e2d\u5e38\u7528\u65b9\u5f0f)<\/p>\n<p>Servlet &#8211;&gt; GenericServlet &#8211;&gt; HttpServlet\u00a0 (\u7ee7\u627fHttpServlet)<\/p>\n<p>\u7237\u7237\u00a0\u00a0\u00a0 \u7238\u7238\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u513f\u5b50\u00a0\u00a0\u00a0\u00a0\u00a0 \u5b59\u5b50<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u5c0f\u6280\u5de7\uff1a\u4f7f\u751f\u6210\u7684servlet<\/strong><strong>\u66f4\u6e05\u65b0\u4e00\u4e9b<\/strong><\/p>\n<p>\u627e\u5230\uff1aMyEclipse\\Common\\plugins\u76ee\u5f55<\/p>\n<p>\u628acom.genuitec.eclipse.wizards_9.0.0.me201108091322.jar\u590d\u5236\u5230\u4e0a\u9762\u76ee\u5f55<\/p>\n<p><strong>servet<\/strong><strong>\u6620\u5c04\u7ec6\u8282\uff1a<\/strong><\/p>\n<p>servet\u6620\u5c04\u7ec6\u82821\uff1a<\/p>\n<p>servet\u6620\u5c04\u7ec6\u82822: \u901a\u914d\u7b26* \u4ee3\u8868\u4efb\u610f\u5b57\u7b26\u4e32<\/p>\n<p>url-pattern: *.do\u00a0 \u4ee5*.do\u5b57\u7b26\u4e32\u7684\u8bf7\u6c42\u90fd\u53ef\u4ee5\u8bbf\u95ee<\/p>\n<p>url-pattern: \/*\u00a0 \u4efb\u610f\u5b57\u7b26\u4e32\u90fd\u53ef\u4ee5\u8bbf\u95ee<\/p>\n<p>url-pattern\uff1a \/action\/* \u4ee5\/action\u5f00\u5934\u7684\u8bf7\u6c42\u90fd\u53ef\u4ee5\u8bbf\u95ee<\/p>\n<p>\u5339\u914d\u89c4\u5219\uff1a<\/p>\n<p>\u4f18\u5148\u7ea7\uff1a\u4ece\u9ad8\u5230\u4f4e<\/p>\n<p>\u7edd\u5bf9\u5339\u914d&#8211;&gt;\u00a0 \/\u5f00\u5934\u5339\u914d &#8211;&gt; \u6269\u5c55\u540d\u65b9\u5f0f\u5339\u914d<\/p>\n<p>&nbsp;<\/p>\n<p>\u5982\u679curl-pattern\u7684\u503c\u662f\/\uff0c\u8868\u793a\u6267\u884c\u9ed8\u8ba4\u6620\u5c04\u3002\u6240\u6709\u8d44\u6e90\u90fd\u662fservlet<\/p>\n<p>&nbsp;<\/p>\n<h1>\u4e94\u3001Servlet\u7684\u7ebf\u7a0b\u5b89\u5168<\/h1>\n<p>\u5355\u5b9e\u4f8b\uff1a\u6bcf\u6b21\u8bbf\u95ee\u591a\u7ebf\u7a0b<\/p>\n<p>\u89e3\u51b3\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u7684\u6700\u4f73\u529e\u6cd5\uff0c\u4e0d\u8981\u5199\u5168\u5c40\u53d8\u91cf\uff0c\u800c\u5199\u5c40\u90e8\u53d8\u91cf\u3002<\/p>\n<p>&nbsp;<\/p>\n<h1>\u516d\u3001Servlet\u83b7\u53d6\u914d\u7f6e\u4fe1\u606f<\/h1>\n<h2>ServletConfig\u7684\u4f7f\u7528<\/h2>\n<p><strong>\u4f5c\u75281<\/strong><strong>\uff1a\u53ef\u4ee5\u83b7\u53d6servlet<\/strong><strong>\u914d\u7f6e\u4fe1\u606f<\/strong><\/p>\n<p>\u65b9\u5f0f1\uff1a<\/p>\n<p>\u65b9\u5f0f2\uff1a<\/p>\n<p>\u65b9\u5f0f3\uff1a<\/p>\n<p>\u4f5c\u7528\u4e8c\uff1a\u83b7\u5f97ServletContext\u5bf9\u8c61<\/p>\n<p><strong>\u4f5c\u75282<\/strong><strong>\uff1a\u53ef\u4ee5\u83b7\u5f97ServletContext<\/strong><strong>\u5bf9\u8c61<\/strong><\/p>\n<p>&nbsp;<\/p>\n<h1>\u4e03\u3001ServletContext\uff08\u91cd\u8981\uff09<\/h1>\n<p>ServletContext: \u4ee3\u8868\u7684\u662f\u6574\u4e2a\u5e94\u7528\u3002\u4e00\u4e2a\u5e94\u7528\u53ea\u6709\u4e00\u4e2aServletContext\u5bf9\u8c61\u3002\u5355\u5b9e\u4f8b\u3002<\/p>\n<p><strong>\u4f5c\u7528\uff1a<\/strong><\/p>\n<h2>\u57df\u5bf9\u8c61\uff1a\u5728\u4e00\u5b9a\u8303\u56f4\u5185\uff08\u5f53\u524d\u5e94\u7528\uff09\uff0c\u4f7f\u591a\u4e2aServlet\u5171\u4eab\u6570\u636e\u3002<\/h2>\n<p>\u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n<p>void setAttribute(String name,object value);\/\/\u5411ServletContext\u5bf9\u8c61\u7684map\u4e2d\u6dfb\u52a0\u6570\u636e<\/p>\n<p>Object getAttribute(String name);\/\/\u4eceServletContext\u5bf9\u8c61\u7684map\u4e2d\u53d6\u6570\u636e<\/p>\n<p>void rmoveAttribute(String name);\/\/\u6839\u636ename\u53bb\u79fb\u9664\u6570\u636e<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>\u83b7\u53d6\u5168\u5c40\u914d\u7f6e\u4fe1\u606f\uff1a<\/h2>\n<table>\n<tbody>\n<tr>\n<td width=\"43\"><a href=\"http:\/\/java.sun.com\/j2se\/1.5\/docs\/api\/java\/lang\/String.html\">String<\/a><\/td>\n<td width=\"517\"><strong><a href=\"mk:@MSITStore:F:\\API\\java_ee_api_\u4e2d\u82f1\u6587\u5bf9\u7167\u7248.chm::\/javax\/servlet\/ServletContext.html#getInitParameter(java.lang.String)\">getInitParameter<\/a><\/strong>(<a href=\"http:\/\/java.sun.com\/j2se\/1.5\/docs\/api\/java\/lang\/String.html\">String<\/a> name) \/\/\u6839\u636e\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684key\u5f97\u5230value<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2>\u83b7\u53d6\u8d44\u6e90\u8def\u5f84\uff1a<\/h2>\n<p>String\u00a0 getRealPath(String path);\/\/\u6839\u636e\u8d44\u6e90\u540d\u79f0\u5f97\u5230\u8d44\u6e90\u7684\u7edd\u5bf9\u8def\u5f84.<\/p>\n<p>\u53ef\u4ee5\u5f97\u5230\u5f53\u524d\u5e94\u7528\u4efb\u4f55\u4f4d\u7f6e\u7684\u4efb\u4f55\u8d44\u6e90\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u5b9e\u73b0Servlet\u7684\u8f6c\u53d1\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u00a0<\/strong><strong>RequestDispatcher<\/strong> <strong>\u00a0<\/strong><strong><a href=\"mk:@MSITStore:F:\\API\\java_ee_api_\u4e2d\u82f1\u6587\u5bf9\u7167\u7248.chm::\/javax\/servlet\/ServletContext.html#getRequestDispatcher(java.lang.String)\">getRequestDispatcher<\/a><\/strong>(<a href=\"http:\/\/java.sun.com\/j2se\/1.5\/docs\/api\/java\/lang\/String.html\">String<\/a> path) ;\/\/\u53c2\u6570\u8868\u793a\u8981\u8df3\u8f6c\u5230\u54ea\u53bb<\/p>\n<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"0\"><\/td>\n<td width=\"21\"><\/td>\n<td width=\"130\"><\/td>\n<td width=\"232\"><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td colspan=\"3\"><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<\/tr>\n<tr>\n<td><\/td>\n<td><\/td>\n<td width=\"130\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td>\u6d4f\u89c8\u5668<\/p>\n<p>&nbsp;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; \u4e00\u3001\u4ec0\u4e48Servlet\uff1f servlet \u662f\u8fd0\u884c\u5728 Web \u670d\u52a1\u5668\u4e2d\u7684\u5c0f\u578b Java \u7a0b\u5e8f\uff08\u5373\uff1a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[62],"class_list":["post-169","post","type-post","status-publish","format-standard","hentry","category-jishu","tag-zongjie"],"_links":{"self":[{"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/posts\/169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=169"}],"version-history":[{"count":0,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=\/wp\/v2\/posts\/169\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.tongyunli.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}