{"id":2181,"date":"2022-12-05T21:40:49","date_gmt":"2022-12-05T13:40:49","guid":{"rendered":"https:\/\/qaqaq.top\/?p=2181"},"modified":"2022-12-05T21:40:49","modified_gmt":"2022-12-05T13:40:49","slug":"servlet-%e8%af%b7%e6%b1%82%e8%bd%ac%e5%8f%91","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=2181","title":{"rendered":"Servlet-\u8bf7\u6c42\u8f6c\u53d1"},"content":{"rendered":"\n

\u4ec0\u4e48\u662f\u8bf7\u6c42\u7684\u8f6c\u53d1?
\u8bf7\u6c42\u8f6c\u53d1\u662f\u6307\uff0c\u670d\u52a1\u5668\u6536\u5230\u8bf7\u6c42\u540e\uff0c\u4ece\u4e00\u6b21\u8d44\u6e90\u8df3\u8f6c\u5230\u53e6\u4e00\u4e2a\u8d44\u6e90\u7684\u64cd\u4f5c\u53eb\u8bf7\u6c42\u8f6c\u53d1\u3002<\/p>\n\n\n\n

\u53ef\u4ee5\u8bbf\u95ee\u5f53\u524d\u670d\u52a1\u5668\u5185\u53d7\u4fdd\u62a4\u7684\u5185\u5bb9\uff08WEB-INF\uff09\uff0c\u4e0d\u80fd\u8bbf\u95ee\u5176\u4ed6\u8fdc\u7a0b\u670d\u52a1\u5668<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
package top.qaqaq.P149;\r\n\r\nimport jakarta.servlet.RequestDispatcher;\r\nimport jakarta.servlet.ServletException;\r\nimport jakarta.servlet.http.HttpServlet;\r\nimport jakarta.servlet.http.HttpServletRequest;\r\nimport jakarta.servlet.http.HttpServletResponse;\r\n\r\nimport java.io.IOException;\r\n\r\n\/**\r\n * @author RichieZhang\r\n * @create 2022-12-05 \u4e0b\u5348 5:31\r\n *\/\r\npublic class Servlet1 extends HttpServlet {\r\n    @Override\r\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\r\n\/\/        super.doGet(req, resp);\r\n\r\n        \/*\r\n        viii. setAttribute(key, value);     \u8bbe\u7f6e\u57df\u6570\u636e\r\n        ix. getAttribute(key);              \u83b7\u53d6\u57df\u6570\u636e\r\n        x. getRequestDispatcher()           \u83b7\u53d6\u8bf7\u6c42\u8f6c\u53d1\u5bf9\u8c61\r\n         *\/\r\n\r\n        \/\/\u83b7\u53d6\u8bf7\u6c42\u7684\u53c2\u6570\uff08\u529e\u4e8b\u7684\u6750\u6599\uff09\u67e5\u770b\r\n        String username = req.getParameter(\"username\");\r\n        System.out.println(\"\u5728Servlet1\uff08\u67dc\u53f01\uff09\u4e2d\u67e5\u770b\u53c2\u6570\uff08\u6750\u6599\uff09\uff1a\" + username);\r\n\r\n        \/\/ \u7ed9 \u6750\u6599 \u76d6\u4e00\u4e2a\u7ae0\uff0c\u5e76\u4f20\u9012\u5230Servlet2\uff08\u67dc\u53f02\uff09\u53bb\u67e5\u770b\r\n        req.setAttribute(\"key1\",\"\u67dc\u53f01\u7684\u7ae0\");\r\n\r\n        \/\/ \u95ee\u8def\uff1aServlet2\uff08\u67dc\u53f0 2\uff09\u600e\u4e48\u8d70\r\n        \/*\r\n        \u8bf7\u6c42\u8f6c\u53d1\u5fc5\u987b\u8981\u4ee5\u659c\u6760\u6253\u5934\uff0c\/ \u659c\u6760\u8868\u793a\u5730\u5740\u4e3a\uff1ahttp:\/\/ip:port\/\u5de5\u7a0b\u540d\/ \uff0c\u6620\u5c04\u5230IDEA\u4ee3\u7801\u7684web\u76ee\u5f55\r\n         *\/\r\n        RequestDispatcher requestDispatcher = req.getRequestDispatcher(\"\/servlet2\");\r\n\/\/        RequestDispatcher requestDispatcher = req.getRequestDispatcher(\"\/WEB-INF\/form.html\");\r\n\r\n        \/\/ \u8d70\u5411Servlet2\uff08\u67dc\u53f02\uff09\r\n        requestDispatcher.forward(req,resp);\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
package top.qaqaq.P149;\r\n\r\nimport jakarta.servlet.ServletException;\r\nimport jakarta.servlet.http.HttpServlet;\r\nimport jakarta.servlet.http.HttpServletRequest;\r\nimport jakarta.servlet.http.HttpServletResponse;\r\n\r\nimport java.io.IOException;\r\n\r\n\/**\r\n * @author RichieZhang\r\n * @create 2022-12-05 \u4e0b\u5348 5:31\r\n *\/\r\npublic class Servlet2 extends HttpServlet {\r\n    @Override\r\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\r\n\/\/        super.doGet(req, resp);\r\n\r\n        \/\/\u83b7\u53d6\u8bf7\u6c42\u7684\u53c2\u6570\uff08\u529e\u4e8b\u7684\u6750\u6599\uff09\u67e5\u770b\r\n        String username = req.getParameter(\"username\");\r\n        System.out.println(\"\u5728Servlet2\uff08\u67dc\u53f02\uff09\u4e2d\u67e5\u770b\u53c2\u6570\uff08\u6750\u6599\uff09\uff1a\" + username);\r\n\r\n        \/\/\u67e5\u770b \u67dc\u53f01 \u662f\u5426\u6709\u76d6\u7ae0\r\n        Object key1 = req.getAttribute(\"key1\");\r\n        System.out.println(\"\u67dc\u53f01\u662f\u5426\u6709\u7ae0\uff1a\" + key1);\r\n\r\n        \/\/ \u5904\u7406\u81ea\u5df1\u7684\u4e1a\u52a1\r\n        System.out.println(\"Servlet2 \u5904\u7406\u81ea\u5df1\u7684\u4e1a\u52a1 \");\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n
    <servlet>\r\n        <servlet-name>Servlet1<\/servlet-name>\r\n        <servlet-class>top.qaqaq.P149.Servlet1<\/servlet-class>\r\n    <\/servlet>\r\n    <servlet-mapping>\r\n        <servlet-name>Servlet1<\/servlet-name>\r\n        <url-pattern>\/servlet1<\/url-pattern>\r\n    <\/servlet-mapping>\n\n    <servlet>\r\n        <servlet-name>Servlet2<\/servlet-name>\r\n        <servlet-class>top.qaqaq.P149.Servlet2<\/servlet-class>\r\n    <\/servlet>\r\n    <servlet-mapping>\r\n        <servlet-name>Servlet2<\/servlet-name>\r\n        <url-pattern>\/servlet2<\/url-pattern>\r\n    <\/servlet-mapping><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u4ec0\u4e48\u662f\u8bf7\u6c42\u7684\u8f6c\u53d1?\u8bf7\u6c42\u8f6c\u53d1\u662f\u6307\uff0c\u670d\u52a1\u5668\u6536\u5230\u8bf7\u6c42\u540e\uff0c\u4ece\u4e00\u6b21\u8d44\u6e90\u8df3\u8f6c\u5230\u53e6\u4e00\u4e2a\u8d44\u6e90\u7684\u64cd\u4f5c\u53eb\u8bf7\u6c42\u8f6c\u53d1\u3002 \u53ef\u4ee5\u8bbf\u95ee\u5f53\u524d\u670d […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[61],"class_list":["post-2181","post","type-post","status-publish","format-standard","hentry","category-javaweb-code","tag-javaweb"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2181"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2181"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2181\/revisions"}],"predecessor-version":[{"id":2183,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2181\/revisions\/2183"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}