package top.qaqaq.P172;\n\nimport jakarta.servlet.ServletException;\nimport jakarta.servlet.http.HttpServlet;\nimport jakarta.servlet.http.HttpServletRequest;\nimport jakarta.servlet.http.HttpServletResponse;\n\nimport java.io.IOException;\nimport java.io.PrintWriter;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-07 \u4e0b\u5348 4:27\n *\/\npublic class PringHtml extends HttpServlet {\n\n \/*\n \u4ec0\u4e48\u662f jsp\uff0c\u5b83\u6709\u4ec0\u4e48\u7528?\n\n jsp \u7684\u5168\u6362\u662f java server pages\u3002Java \u7684\u670d\u52a1\u5668\u9875\u9762\u3002\n\n jsp \u7684\u4e3b\u8981\u4f5c\u7528\u662f\u4ee3\u66ff Servlet \u7a0b\u5e8f\u56de\u4f20 html \u9875\u9762\u7684\u6570\u636e\u3002\n\n \u56e0\u4e3a Servlet \u7a0b\u5e8f\u56de\u4f20 html \u9875\u9762\u6570\u636e\u662f\u4e00\u4ef6\u975e\u5e38\u7e41\u9501\u7684\u4e8b\u60c5\u3002\u5f00\u53d1\u6210\u672c\u548c\u7ef4\u62a4\u6210\u672c\u90fd\u6781\u9ad8\u3002\n *\/\n\n @Override\n protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\/\/ super.doGet(req, resp);\n\n \/\/ \u901a\u8fc7\u54cd\u5e94\u7684\u8f93\u51fa\u6d41\u56de\u4f20html\u9875\u9762\u6570\u636e\n\n resp.setContentType(\"text\/html; charset=UTF-8\");\n\n PrintWriter writer = resp.getWriter();\n\n writer.write(\"<!DOCTYPE html>\\r\\n\");\n writer.write(\"<html lang=\\\"en\\\">\\r\\n\");\n writer.write(\"<head>\\r\\n\");\n writer.write(\" <meta charset=\\\"UTF-8\\\">\\r\\n\");\n writer.write(\" <title>Title<\/title>\\r\\n\");\n writer.write(\"<\/head>\\r\\n\");\n writer.write(\"<body>\\r\\n\");\n writer.write(\" \u8fd9\u662fhtml\u9875\u9762\u6570\u636e\\r\\n\");\n writer.write(\"<\/body>\\r\\n\");\n writer.write(\"<\/html>\\r\\n\");\n writer.write(\"\\r\\n\");\n }\n}\n<\/code><\/pre>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n <meta charset=\"UTF-8\">\n <title>Title<\/title>\n<\/head>\n<body>\n \u8fd9\u662fhtml\u9875\u9762\u6570\u636e\n<\/body>\n<\/html><\/code><\/pre>\n\n\n\n<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<web-app xmlns=\"https:\/\/jakarta.ee\/xml\/ns\/jakartaee\"\n xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n xsi:schemaLocation=\"https:\/\/jakarta.ee\/xml\/ns\/jakartaee https:\/\/jakarta.ee\/xml\/ns\/jakartaee\/web-app_5_0.xsd\"\n version=\"5.0\">\n <servlet>\n <servlet-name>PringHtml<\/servlet-name>\n <servlet-class>top.qaqaq.P172.PringHtml<\/servlet-class>\n <\/servlet>\n <servlet-mapping>\n <servlet-name>PringHtml<\/servlet-name>\n <url-pattern>\/pringHtml<\/url-pattern>\n <\/servlet-mapping>\n<\/web-app><\/code><\/pre>\n\n\n\njsp-jsp\u7684\u5c0f\u7ed3\u3001jsp-jsp\u9875\u9762\u7684\u672c\u8d28<\/p>\n\n\n\n
<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/7\n Time: \u4e0b\u5348 4:36\n To change this template use File | Settings | File Templates.\n--%>\n\n<%--\n jsp \u5982\u4f55\u8bbf\u95ee\uff1a\n jsp \u9875\u9762\u548c html \u9875\u9762\u4e00\u6837\uff0c\u90fd\u662f\u5b58\u653e\u5728 web \u76ee\u5f55\u4e0b\u3002\u8bbf\u95ee\u4e5f\u8ddf\u8bbf\u95ee html \u9875\u9762\u4e00\u6837\u3002\n\n \u6bd4\u5982\uff1a\n \u5728 web \u76ee\u5f55\u4e0b\u6709\u5982\u4e0b\u7684\u6587\u4ef6\uff1a\n web \u76ee\u5f55\n a.html \u9875\u9762 \u8bbf\u95ee\u5730\u5740\u662f =======>>>>>> http:\/\/ip:port\/\u5de5\u7a0b\u8def\u5f84\/a.html\n b.jsp \u9875\u9762 \u8bbf\u95ee\u5730\u5740\u662f =======>>>>>> http:\/\/ip:port\/\u5de5\u7a0b\u8def\u5f84\/b.jsp\n--%>\n\n<%--\n jsp \u7684\u672c\u8d28\u662f\u4ec0\u4e48\u3002\n\n jsp \u9875\u9762\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a Servlet \u7a0b\u5e8f\u3002\n\n \u5f53\u6211\u4eec\u7b2c\u4e00\u6b21\u8bbf\u95ee jsp \u9875\u9762\u7684\u65f6\u5019\u3002Tomcat \u670d\u52a1\u5668\u4f1a\u5e2e\u6211\u4eec\u628a jsp \u9875\u9762\u7ffb\u8bd1\u6210\u4e3a\u4e00\u4e2a java \u6e90\u6587\u4ef6\u3002\n \u5e76\u4e14\u5bf9\u5b83\u8fdb\u884c\u7f16\u8bd1\u6210\u4e3a.class \u5b57\u8282\u7801\u7a0b\u5e8f\u3002\n\n \u901a\u8fc7\u7ffb\u8bd1\u7684 java \u6e90\u4ee3\u7801\u6211\u4eec\u5c31\u53ef\u4ee5\u5f97\u5230\u7ed3\u679c\uff1ajsp \u5c31\u662f Servlet \u7a0b\u5e8f\u3002\n--%>\n\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n<\/head>\n<body>\n b.jsp\u9875\u9762\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\njsp-jsp\u7684page\u6307\u4ee4\u3001jsp-\u58f0\u660e\u811a\u672c\u3001jsp-\u8868\u8fbe\u5f0f\u811a\u672c\u3001jsp-\u4ee3\u7801\u811a\u672c\u3001jsp-jsp\u4e2d\u7684\u4e09\u79cd\u6ce8\u91ca<\/p>\n\n\n\n
<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/7\n Time: \u4e0b\u5348 4:55\n To change this template use File | Settings | File Templates.\n--%>\n\n<!--\njsp \u5934\u90e8\u7684 page \u6307\u4ee4\njsp \u7684 page \u6307\u4ee4\u53ef\u4ee5\u4fee\u6539 jsp \u9875\u9762\u4e2d\u4e00\u4e9b\u91cd\u8981\u7684\u5c5e\u6027\uff0c\u6216\u8005\u884c\u4e3a\u3002\n\ni. language \u5c5e\u6027 \u8868\u793a jsp \u7ffb\u8bd1\u540e\u662f\u4ec0\u4e48\u8bed\u8a00\u6587\u4ef6\u3002\u6682\u65f6\u53ea\u652f\u6301 java\u3002\nii. contentType \u5c5e\u6027 \u8868\u793a jsp \u8fd4\u56de\u7684\u6570\u636e\u7c7b\u578b\u662f\u4ec0\u4e48\u3002\u4e5f\u662f\u6e90\u7801\u4e2d response.setContentType()\u53c2\u6570\u503c\niii. pageEncoding \u5c5e\u6027 \u8868\u793a\u5f53\u524d jsp \u9875\u9762\u6587\u4ef6\u672c\u8eab\u7684\u5b57\u7b26\u96c6\u3002\niv. import \u5c5e\u6027 \u8ddf java \u6e90\u4ee3\u7801\u4e2d\u4e00\u6837\u3002\u7528\u4e8e\u5bfc\u5305\uff0c\u5bfc\u7c7b\u3002\n\n========================\u4e24\u4e2a\u5c5e\u6027\u662f\u7ed9 out \u8f93\u51fa\u6d41\u4f7f\u7528=============================\nv. autoFlush \u5c5e\u6027 \u8bbe\u7f6e\u5f53 out \u8f93\u51fa\u6d41\u7f13\u51b2\u533a\u6ee1\u4e86\u4e4b\u540e\uff0c\u662f\u5426\u81ea\u52a8\u5237\u65b0\u51b2\u7ea7\u533a\u3002\u9ed8\u8ba4\u503c\u662f true\u3002\nvi. buffer \u5c5e\u6027 \u8bbe\u7f6e out \u7f13\u51b2\u533a\u7684\u5927\u5c0f\u3002\u9ed8\u8ba4\u662f 8kb\n\nvii. errorPage \u5c5e\u6027 \u8bbe\u7f6e\u5f53 jsp \u9875\u9762\u8fd0\u884c\u65f6\u51fa\u9519\uff0c\u81ea\u52a8\u8df3\u8f6c\u53bb\u7684\u9519\u8bef\u9875\u9762\u8def\u5f84\u3002\nviii. isErrorPage \u5c5e\u6027 \u8bbe\u7f6e\u5f53\u524d jsp \u9875\u9762\u662f\u5426\u662f\u9519\u8bef\u4fe1\u606f\u9875\u9762\u3002\u9ed8\u8ba4\u662f false\u3002\u5982\u679c\u662f true \u53ef\u4ee5 \u83b7\u53d6\u5f02\u5e38\u4fe1\u606f\u3002\nix. session \u5c5e\u6027 \u8bbe\u7f6e\u8bbf\u95ee\u5f53\u524d jsp \u9875\u9762\uff0c\u662f\u5426\u4f1a\u521b\u5efa HttpSession \u5bf9\u8c61\u3002\u9ed8\u8ba4\u662f true\u3002\nx. extends \u5c5e\u6027 \u8bbe\u7f6e jsp \u7ffb\u8bd1\u51fa\u6765\u7684 java \u7c7b\u9ed8\u8ba4\u7ee7\u627f\u8c01\u3002\n-->\n\n<%@ page import=\"java.util.Map\" %>\n<%@ page import=\"java.util.HashMap\" %>\n<%@ page import=\"javax.swing.*\" %>\n<%@ page contentType=\"text\/html;charset=UTF-8\"\n pageEncoding=\"UTF-8\"\n autoFlush=\"true\"\n buffer=\"8kb\"\n errorPage=\"\/error500.jsp\"\n isErrorPage=\"false\"\n session=\"true\"\n language=\"java\" %>\n\n<!--\nerrorPage\u8868\u793a\u9519\u8bef\u540e\u81ea\u52a8\u8df3\u8f6c\u53bb\u7684\u8def\u5f84\n\u8fd9\u4e2a\u8def\u5f84\u4e00\u822c\u90fd\u662f\u4ee5\u659c\u6760\u6253\u5934\uff0c\u5b83\u8868\u793a\u8bf7\u6c42\u5730\u5740\u4e3ahttp:\/\/ip:port\/\u5de5\u7a0b\u8def\u5f84\/\n\u6620\u5c04\u5230\u4ee3\u7801\u7684Web\u76ee\u5f55\n-->\n\n<html>\n<head>\n <title>Title<\/title>\n<\/head>\n<body>\n a.jsp\u9875\u9762 <br\/>\n\n <%!\n \/\/\u58f0\u660eJava\u4ee3\u7801\n %>\n\n<%-- <%--%>\n<%-- int i = 12 \/ 0;--%>\n<%-- %>--%>\n\n<%-- \u58f0\u660e\u811a\u672c(\u6781\u5c11\u4f7f\u7528)\n \u58f0\u660e\u811a\u672c\u7684\u683c\u5f0f\u662f\uff1a <%! \u58f0\u660e java \u4ee3\u7801 %>\n \u4f5c\u7528\uff1a\u53ef\u4ee5\u7ed9 jsp \u7ffb\u8bd1\u51fa\u6765\u7684 java \u7c7b\u5b9a\u4e49\u5c5e\u6027\u548c\u65b9\u6cd5\u751a\u81f3\u662f\u9759\u6001\u4ee3\u7801\u5757\u3002\u5185\u90e8\u7c7b\u7b49\u3002\n%-->\n\n<%-- 1\u3001\u58f0\u660e\u7c7b\u5c5e\u6027--%>\n <%!\n private Integer id;\n private String name;\n private static Map<String,Object> map;\n %>\n<%-- 2\u3001\u58f0\u660e static \u9759\u6001\u4ee3\u7801\u5757--%>\n <%!\n static {\n map = new HashMap<String,Object>();\n map.put(\"key1\",\"value1\");\n map.put(\"key2\",\"value2\");\n map.put(\"key3\",\"value3\");\n }\n %>\n<%-- 3\u3001\u58f0\u660e\u7c7b\u65b9\u6cd5--%>\n <%!\n public int abc() {\n return 12;\n }\n %>\n<%-- 4\u3001\u58f0\u660e\u5185\u90e8\u7c7b--%>\n <%!\n public static class A {\n private Integer id = 12;\n private String abc = \"abc\";\n }\n %>\n\n<%-- ii. \u8868\u8fbe\u5f0f\u811a\u672c\uff08\u5e38\u7528\uff09--%>\n<%-- \u8868\u8fbe\u5f0f\u811a\u672c\u7684\u683c\u5f0f\u662f\uff1a<%= \u8868\u8fbe\u5f0f %>--%>\n<%-- \u8868\u8fbe\u5f0f\u811a\u672c\u7684\u4f5c\u7528\u662f\uff1a\u7684 jsp \u9875\u9762\u4e0a\u8f93\u51fa\u6570\u636e\u3002--%>\n<%-- --%>\n<%-- \u8868\u8fbe\u5f0f\u811a\u672c\u7684\u7279\u70b9\uff1a--%>\n<%-- 1\u3001\u6240\u6709\u7684\u8868\u8fbe\u5f0f\u811a\u672c\u90fd\u4f1a\u88ab\u7ffb\u8bd1\u5230_jspService() \u65b9\u6cd5\u4e2d--%>\n<%-- 2\u3001\u8868\u8fbe\u5f0f\u811a\u672c\u90fd\u4f1a\u88ab\u7ffb\u8bd1\u6210\u4e3a out.print()\u8f93\u51fa\u5230\u9875\u9762\u4e0a--%>\n<%-- 3\u3001\u7531\u4e8e\u8868\u8fbe\u5f0f\u811a\u672c\u7ffb\u8bd1\u7684\u5185\u5bb9\u90fd\u5728_jspService() \u65b9\u6cd5\u4e2d,\u6240\u4ee5_jspService()\u65b9\u6cd5\u4e2d\u7684\u5bf9\u8c61\u90fd\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u3002--%>\n<%-- 4\u3001\u8868\u8fbe\u5f0f\u811a\u672c\u4e2d\u7684\u8868\u8fbe\u5f0f\u4e0d\u80fd\u4ee5\u5206\u53f7\u7ed3\u675f\u3002--%>\n\n<%-- 1. \u8f93\u51fa\u6574\u578b--%>\n <%=12 %> <br\/>\n<%-- 2. \u8f93\u51fa\u6d6e\u70b9\u578b--%>\n <%=12.12 %> <br\/>\n<%-- 3. \u8f93\u51fa\u5b57\u7b26\u4e32--%>\n <%=\"\u6211\u662f\u5b57\u7b26\u4e32\" %> <br\/>\n<%-- 4. \u8f93\u51fa\u5bf9\u8c61--%>\n <%=map%> <br\/>\n <%=request.getParameter(\"username\")%>\n\n<%-- iii. \u4ee3\u7801\u811a\u672c--%>\n<%-- \u4ee3\u7801\u811a\u672c\u7684\u683c\u5f0f\u662f\uff1a--%>\n<%-- <% java \u8bed\u53e5 %>--%>\n<%-- \u4ee3\u7801\u811a\u672c\u7684\u4f5c\u7528\u662f\uff1a\u53ef\u4ee5\u5728 jsp \u9875\u9762\u4e2d\uff0c\u7f16\u5199\u6211\u4eec\u81ea\u5df1\u9700\u8981\u7684\u529f\u80fd\uff08\u5199\u7684\u662f java \u8bed\u53e5\uff09\u3002--%>\n<%-- --%>\n<%-- \u4ee3\u7801\u811a\u672c\u7684\u7279\u70b9\u662f\uff1a--%>\n<%-- 1\u3001\u4ee3\u7801\u811a\u672c\u7ffb\u8bd1\u4e4b\u540e\u90fd\u5728_jspService \u65b9\u6cd5\u4e2d--%>\n<%-- 2\u3001\u4ee3\u7801\u811a\u672c\u7531\u4e8e\u7ffb\u8bd1\u5230_jspService()\u65b9\u6cd5\u4e2d\uff0c\u6240\u4ee5\u5728_jspService()\u65b9\u6cd5\u4e2d\u7684\u73b0\u6709\u5bf9\u8c61\u90fd\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u3002--%>\n<%-- 3\u3001\u8fd8\u53ef\u4ee5\u7531\u591a\u4e2a\u4ee3\u7801\u811a\u672c\u5757\u7ec4\u5408\u5b8c\u6210\u4e00\u4e2a\u5b8c\u6574\u7684 java \u8bed\u53e5\u3002--%>\n<%-- 4\u3001\u4ee3\u7801\u811a\u672c\u8fd8\u53ef\u4ee5\u548c\u8868\u8fbe\u5f0f\u811a\u672c\u4e00\u8d77\u7ec4\u5408\u4f7f\u7528\uff0c\u5728 jsp \u9875\u9762\u4e0a\u8f93\u51fa\u6570\u636e--%>\n\n<%-- 1. \u4ee3\u7801\u811a\u672c----if \u8bed\u53e5--%>\n <%\n int i = 12;\n if (i == 12) {\n System.out.println(\"\u6211\u597d\u5e05\uff01\uff01\");\n } else {\n System.out.println(\"\u6211\u9a97\u4eba\u7684\uff01\uff01\");\n }\n %>\n\n <%\n int k = 12;\n if (k == 12) {\n %>\n <h1>\u6211\u597d\u5e05\uff01\uff01<\/h1>\n <%\n } else {\n %>\n <h1>\u6211\u9a97\u4eba\u7684\uff01<\/h1>\n <%\n }\n %>\n <br\/>\n<%-- 2. \u4ee3\u7801\u811a\u672c----for \u5faa\u73af\u8bed\u53e5--%>\n <%\n for (int j = 0; j < 10; j++){\n System.out.println(j);\n }\n %>\n\n <table border=\"1\" cellpadding=\"0\">\n <%\n for (int j = 0; j < 10; j++){\n %>\n <tr>\n <td>\u7b2c <%=j + 1%> \u884c<\/td>\n <\/tr>\n <%\n }\n %>\n <\/table>\n<%-- 3. \u7ffb\u8bd1\u540e java \u6587\u4ef6\u4e2d_jspService \u65b9\u6cd5\u5185\u7684\u4ee3\u7801\u90fd\u53ef\u4ee5\u5199--%>\n <%\n String username = request.getParameter(\"username\");\n System.out.println(\"\u7528\u6237\u540d\u7684\u8bf7\u6c42\u53c2\u6570\u503c\u662f\uff1a\" + username);\n %>\n\n<%-- jsp \u4e2d\u7684\u4e09\u79cd\u6ce8\u91ca--%>\n\n<%-- i. html \u6ce8\u91ca--%>\n <!-- \u8fd9\u662fhtml\u6ce8\u91ca -->\n<%-- html \u6ce8\u91ca\u4f1a\u88ab\u7ffb\u8bd1\u5230 java \u6e90\u4ee3\u7801\u4e2d\u3002\u5728_jspService \u65b9\u6cd5\u91cc\uff0c\u4ee5 out.writer \u8f93\u51fa\u5230\u5ba2\u6237\u7aef\u3002--%>\n\n<%-- ii. java \u6ce8\u91ca--%>\n <%\n \/\/ \u5355\u884cjava\u6ce8\u91ca\n \/* \u591a\u884cjava\u6ce8\u91ca *\/\n %>\n<%-- java \u6ce8\u91ca\u4f1a\u88ab\u7ffb\u8bd1\u5230 java \u6e90\u4ee3\u7801\u4e2d\u3002--%>\n\n<%-- iii. jsp \u6ce8\u91ca--%>\n <%-- \u8fd9\u662fjsp\u6ce8\u91ca --%>\n<%-- jsp \u6ce8\u91ca\u53ef\u4ee5\u6ce8\u6389\uff0cjsp \u9875\u9762\u4e2d\u6240\u6709\u4ee3\u7801\u3002--%>\n\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\n<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/7\n Time: \u4e0b\u5348 5:15\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n<\/head>\n<body>\n \u5f88\u62b1\u6b49\uff0c\u60a8\u8bbf\u95ee\u7684\u9875\u9762\u670d\u52a1\u5668\u51fa\u73b0\u9519\u8bef\uff0c\u7a0b\u5e8f\u733f\u5c0f\u54e5\u6b63\u5728\u52aa\u529b\u4e3a\u60a8\u62a2\u4fee\uff01\uff01\uff01\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\njsp-jsp\u4e2d\u7684\u4e5d\u5927\u5185\u7f6e\u5bf9\u8c61\u3001jsp-\u56db\u4e2a\u57df\u5bf9\u8c61\u7684\u6f14\u793a\u3001jsp-\u5e38\u7528\u6807\u7b7e \u4e4b \u8bf7\u6c42\u8f6c\u53d1<\/p>\n\n\n\n
jsp \u4e2d\u7684\u5185\u7f6e\u5bf9\u8c61\uff0c\u662f\u6307 Tomcat \u5728\u7ffb\u8bd1 jsp \u9875\u9762\u6210\u4e3a Servlet \u6e90\u4ee3\u7801\u540e\uff0c\u5185\u90e8\u63d0\u4f9b\u7684\u4e5d\u5927\u5bf9\u8c61\uff0c\u53eb\u5185\u7f6e\u5bf9\u8c61\u3002<\/p>\n\n\n\n![\"\"](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/figure>\n\n\n\n<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/7\n Time: \u4e0b\u5348 7:35\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n<\/head>\n<body>\n <h1>scope.jsp\u9875\u9762<\/h1>\n\n<%-- jsp \u56db\u5927\u57df\u5bf9\u8c61--%>\n\n<%-- \u56db\u4e2a\u57df\u5bf9\u8c61\u5206\u522b\u662f\uff1a--%>\n<%-- pageContext (PageContextImpl \u7c7b) \u5f53\u524d jsp \u9875\u9762\u8303\u56f4\u5185\u6709\u6548--%>\n<%-- request (HttpServletRequest \u7c7b \u4e00\u6b21\u8bf7\u6c42\u5185\u6709\u6548--%>\n<%-- session (HttpSession \u7c7b) \u4e00\u4e2a\u4f1a\u8bdd\u8303\u56f4\u5185\u6709\u6548\uff08\u6253\u5f00\u6d4f\u89c8\u5668\u8bbf\u95ee\u670d\u52a1\u5668\uff0c\u76f4\u5230\u5173\u95ed\u6d4f\u89c8\u5668\uff09--%>\n<%-- application (ServletContext \u7c7b) \u6574\u4e2a web \u5de5\u7a0b\u8303\u56f4\u5185\u90fd\u6709\u6548\uff08\u53ea\u8981 web \u5de5\u7a0b\u4e0d\u505c\u6b62\uff0c\u6570\u636e\u90fd\u5728\uff09--%>\n\n<%-- \u57df\u5bf9\u8c61\u662f\u53ef\u4ee5\u50cf Map \u4e00\u6837\u5b58\u53d6\u6570\u636e\u7684\u5bf9\u8c61\u3002\u56db\u4e2a\u57df\u5bf9\u8c61\u529f\u80fd\u4e00\u6837\u3002\u4e0d\u540c\u7684\u662f\u5b83\u4eec\u5bf9\u6570\u636e\u7684\u5b58\u53d6\u8303\u56f4\u3002--%>\n\n<%-- \u867d\u7136\u56db\u4e2a\u57df\u5bf9\u8c61\u90fd\u53ef\u4ee5\u5b58\u53d6\u6570\u636e\u3002\u5728\u4f7f\u7528\u4e0a\u5b83\u4eec\u662f\u6709\u4f18\u5148\u987a\u5e8f\u7684\u3002--%>\n\n<%-- \u56db\u4e2a\u57df\u5728\u4f7f\u7528\u7684\u65f6\u5019\uff0c\u4f18\u5148\u987a\u5e8f\u5206\u522b\u662f\uff0c\u4ed6\u4eec\u4ece\u5c0f\u5230\u5927\u7684\u8303\u56f4\u7684\u987a\u5e8f\u3002--%>\n\n<%-- pageContext ====>>> request ====>>> session ====>>> application--%>\n\n <%\n \/\/ \u5f80\u56db\u4e2a\u57df\u4e2d\u90fd\u5206\u522b\u4fdd\u5b58\u4e86\u6570\u636e\n pageContext.setAttribute(\"key\",\"pageContext\");\n request.setAttribute(\"key\",\"request\");\n session.setAttribute(\"key\",\"session\");\n application.setAttribute(\"key\",\"application\");\n %>\n pageContext\u57df\u662f\u5426\u6709\u503c\uff1a<%=pageContext.getAttribute(\"key\")%> <br\/>\n request\u57df\u662f\u5426\u6709\u503c\uff1a<%=request.getAttribute(\"key\")%> <br\/>\n session\u57df\u662f\u5426\u6709\u503c\uff1a<%=session.getAttribute(\"key\")%> <br\/>\n application\u57df\u662f\u5426\u6709\u503c\uff1a<%=application.getAttribute(\"key\")%> <br\/>\n\n <%\n request.getRequestDispatcher(\"\/scope2.jsp\").forward(request,response);\n %>\n\n <%--\n jsp \u6807\u7b7e-\u8f6c\u53d1\n\n <jsp:forward page=\"\"><\/jsp:forward> \u662f\u8bf7\u6c42\u8f6c\u53d1\u6807\u7b7e\uff0c\u5b83\u7684\u529f\u80fd\u5c31\u662f\u8bf7\u6c42\u8f6c\u53d1\n page \u5c5e\u6027\u8bbe\u7f6e\u8bf7\u6c42\u8f6c\u53d1\u7684\u8def\u5f84\n --%>\n <jsp:forward page=\"\/scope2.jsp\"><\/jsp:forward>\n\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\n<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/7\n Time: \u4e0b\u5348 7:45\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n<\/head>\n<body>\n <h1>scope2.jsp\u9875\u9762<\/h1>\n pageContext\u57df\u662f\u5426\u6709\u503c\uff1a<%=pageContext.getAttribute(\"key\")%> <br\/>\n request\u57df\u662f\u5426\u6709\u503c\uff1a<%=request.getAttribute(\"key\")%> <br\/>\n session\u57df\u662f\u5426\u6709\u503c\uff1a<%=session.getAttribute(\"key\")%> <br\/>\n application\u57df\u662f\u5426\u6709\u503c\uff1a<%=application.getAttribute(\"key\")%> <br\/>\n\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\njsp-out\u548cresponse\u8f93\u51fa\u7684\u533a\u522b<\/p>\n\n\n\n
<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/7\n Time: \u4e0b\u5348 7:56\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n<\/head>\n<body>\n\n<%--\n jsp \u4e2d\u7684 out \u8f93\u51fa\u548c response.getWriter \u8f93\u51fa\u7684\u533a\u522b\n\n response \u4e2d\u8868\u793a\u54cd\u5e94\uff0c\u6211\u4eec\u7ecf\u5e38\u7528\u4e8e\u8bbe\u7f6e\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7684\u5185\u5bb9\uff08\u8f93\u51fa\uff09\n out \u4e5f\u662f\u7ed9\u7528\u6237\u505a\u8f93\u51fa\u4f7f\u7528\u7684\u3002\n\n \u7531\u4e8e jsp \u7ffb\u8bd1\u4e4b\u540e\uff0c\u5e95\u5c42\u6e90\u4ee3\u7801\u90fd\u662f\u4f7f\u7528 out \u6765\u8fdb\u884c\u8f93\u51fa\uff0c\u6240\u4ee5\u4e00\u822c\u60c5\u51b5\u4e0b\u3002\u6211\u4eec\u5728 jsp \u9875\u9762\u4e2d\u7edf\u4e00\u4f7f\u7528 out \u6765\u8fdb\u884c\u8f93\u51fa\u3002\n \u907f\u514d\u6253\u4e71\u9875\u9762\u8f93\u51fa\u5185\u5bb9\u7684\u987a\u5e8f\u3002\n\n out.write() \u8f93\u51fa\u5b57\u7b26\u4e32\u6ca1\u6709\u95ee\u9898\n out.print() \u8f93\u51fa\u4efb\u610f\u6570\u636e\u90fd\u6ca1\u6709\u95ee\u9898\uff08\u90fd\u8f6c\u6362\u6210\u4e3a\u5b57\u7b26\u4e32\u540e\u8c03\u7528\u7684 write \u8f93\u51fa\uff09\n\n \u6df1\u5165\u6e90\u7801\uff0c\u6d45\u51fa\u7ed3\u8bba\uff1a\u5728 jsp \u9875\u9762\u4e2d\uff0c\u53ef\u4ee5\u7edf\u4e00\u4f7f\u7528 out.print()\u6765\u8fdb\u884c\u8f93\u51fa\n--%>\n\n <%\n out.write(\"out\u8f93\u51fa1 <br\/>\");\n out.flush();\n out.write(\"out\u8f93\u51fa2 <br\/>\");\n\n response.getWriter().write(\"response\u8f93\u51fa1 <br\/>\");\n response.getWriter().write(\"response\u8f93\u51fa2 <br\/>\");\n %>\n\n <%\n out.write(\"12\");\n out.print(\"12\");\n out.write(12);\n out.print(12);\n %>\n\n<\/body>\n<\/html>\n\n<\/code><\/pre>\n\n\n\npackage top.qaqaq.P182;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-07 \u4e0b\u5348 8:16\n *\/\npublic class demo {\n\n public static void main(String[] args) {\n int i = 1;\n System.out.println((char) i);\n\n char c = '1';\n System.out.println((int) c);\n }\n}\n<\/code><\/pre>\n\n\n\njsp-\u5e38\u7528\u6807\u7b7e \u4e4b \u9759\u6001\u5305\u542b\u3001jsp-\u5e38\u7528\u6807\u7b7e \u4e4b \u52a8\u6001\u5305\u542b<\/p>\n\n\n\n
<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/7\n Time: \u4e0b\u5348 8:36\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n<\/head>\n<body>\n \u5934\u90e8\u4fe1\u606f <br\/>\n \u4e3b\u9898\u5185\u5bb9 <br\/>\n <%--\n jsp \u9759\u6001\u5305\u542b\n\n <%@include file=\"\"%> \u5c31\u662f\u9759\u6001\u5305\u542b\n file \u5c5e\u6027\u6307\u5b9a\u4f60\u8981\u5305\u542b\u7684jsp\u9875\u9762\u8def\u5f84\n \u5730\u5740\u4e2d\u7b2c\u4e00\u4e2a\u659c\u6760 \/ \u8868\u793a\u4e3ahttp:\/\/ip:port\/\u5de5\u7a0b\u8def\u5f84\/ \u6620\u5c04\u5230\u4ee3\u7801\u7684web\u76ee\u5f55\n\n \u9759\u6001\u5305\u542b\u7684\u7279\u70b9\uff1a\n 1. \u9759\u6001\u5305\u542b\u4e0d\u4f1a\u7ffb\u8bd1\u88ab\u5305\u542b\u7684jsp\u9875\u9762\n 2. \u9759\u6001\u5305\u542b\u5176\u5b9e\u662f\u628a\u88ab\u5305\u542b\u7684jsp\u9875\u9762\u7684\u4ee3\u7801\u62f7\u8d1d\u5230\u5305\u542b\u7684\u4f4d\u7f6e\u6267\u884c\u8f93\u51fa\u3002\n\n --%>\n <%@include file=\"\/include\/footer.jsp\"%>\n\n <%--\n jsp \u52a8\u6001\u5305\u542b\n\n <jsp:include page=\"\"><\/jsp:include> \u8fd9\u662f\u52a8\u6001\u5305\u542b\n page \u5c5e\u6027\u662f\u6307\u5b9a\u4f60\u8981\u5305\u542b\u7684jsp\u9875\u9762\u7684\u8def\u5f84\n \u52a8\u6001\u5305\u542b\u4e5f\u53ef\u4ee5\u50cf\u9759\u6001\u5305\u542b\u4e00\u6837\u3002\u628a\u88ab\u5305\u542b\u7684\u5185\u5bb9\u6267\u884c\u8f93\u51fa\u5230\u5305\u542b\u4f4d\u7f6e\n\n \u52a8\u6001\u5305\u542b\u7684\u7279\u70b9\uff1a\n 1. \u52a8\u6001\u5305\u542b\u4f1a\u628a\u5305\u542b\u7684jsp\u9875\u9762\u4e5f\u7ffb\u8bd1\u6210\u4e3ajava\u4ee3\u7801\n 2. \u52a8\u6001\u5305\u542b\u5e95\u5c42\u4ee3\u7801\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\u53bb\u8c03\u7528\u88ab\u5305\u542b\u7684jsp\u9875\u9762\u6267\u884c\u8f93\u51fa\u3002\n JspRuntimeLibrary.include(request, response, \"\/include\/footer.jsp\", out, false);\n 3. \u52a8\u6001\u5305\u542b\uff0c\u8fd8\u53ef\u4ee5\u4f20\u9012\u53c2\u6570\n --%>\n <jsp:include page=\"\/include\/footer.jsp\">\n <jsp:param name=\"username\" value=\"bbj\"\/>\n <jsp:param name=\"password\" value=\"root\"\/>\n <\/jsp:include>\n\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\n<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/7\n Time: \u4e0b\u5348 8:37\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n<\/head>\n<body>\n \u9875\u811a\u4fe1\u606f <br\/>\n \u6539\u4e8c\u4e0b <%=request.getParameter(\"password\")%>\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\njsp-\u7ec3\u4e60\u4e00\uff1a\u4e5d\u4e5d\u4e58\u6cd5\u53e3\u8bc0\u8868<\/p>\n\n\n\n
<%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/8\n Time: \u4e0a\u5348 11:58\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n <style type=\"text\/css\">\n\n table{\n width: 650px;\n }\n <\/style>\n<\/head>\n<body>\n <%--\u7ec3\u4e60\u4e00\uff1a\u5728 jsp \u9875\u9762\u4e2d\u8f93\u51fa\u4e5d\u4e5d\u4e58\u6cd5\u53e3\u8bc0\u8868--%>\n <h1 align=\"center\">\u4e5d\u4e5d\u4e58\u6cd5\u53e3\u8bc0\u8868<\/h1>\n <table align=\"center\">\n <%\n for (int i = 1; i <= 9; i++){\n %>\n <tr>\n <%\n for (int j = 1; j <= i; j++){\n %>\n <td>\n <%=i + \"x\" + j + \"=\" + (i * j)%>\n <\/td>\n <%\n }\n %>\n <\/tr>\n <%\n }\n %>\n <\/table>\n\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\njsp-\u7ec3\u4e60\u4e8c\uff1a\u904d\u5386\u8f93\u51fa10\u4e2a\u5b66\u751f\u4fe1\u606f\u5230\u8868\u683c\u4e2d<\/p>\n\n\n\n
<%@ page import=\"java.util.List\" %>\n<%@ page import=\"top.qaqaq.P187.Student\" %>\n<%@ page import=\"java.util.ArrayList\" %><%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/8\n Time: \u4e0b\u5348 12:11\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n <style>\n table{\n border: 1px blue solid;\n width: 600px;\n border-collapse: collapse;\n }\n td,th{\n border: 1px blue solid;\n }\n <\/style>\n<\/head>\n<body>\n <%--\u7ec3\u4e60\u4e8c\uff1ajsp \u8f93\u51fa\u4e00\u4e2a\u8868\u683c\uff0c\u91cc\u9762\u6709 10 \u4e2a\u5b66\u751f\u4fe1\u606f\u3002--%>\n <%\n List<Student> studentList = new ArrayList<Student>();\n for (int i = 0; i < 10; i++) {\n int t = i + 1;\n studentList.add(new Student(t,\"name\" + t, 18 + t, \"phone\" + t));\n }\n %>\n\n <table>\n <tr>\n <td>\u7f16\u53f7<\/td>\n <td>\u59d3\u540d<\/td>\n <td>\u5e74\u9f84<\/td>\n <td>\u7535\u8bdd<\/td>\n <td>\u64cd\u4f5c<\/td>\n <\/tr>\n <%\n for (Student student : studentList){\n %>\n <tr>\n <td>\n <%=student.getId()%>\n <\/td>\n <td>\n <%=student.getName()%>\n <\/td>\n <td>\n <%=student.getAge()%>\n <\/td>\n <td>\n <%=student.getPhone()%>\n <\/td>\n <td>\u5220\u9664\u3001\u4fee\u6539<\/td>\n <\/tr>\n <%\n }\n %>\n <\/table>\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\njsp-\u8bf7\u6c42\u8f6c\u53d1\u7684\u4f7f\u7528\u8bf4\u660e<\/p>\n\n\n\n
package top.qaqaq.P188;\n\nimport jakarta.servlet.ServletException;\nimport jakarta.servlet.http.HttpServlet;\nimport jakarta.servlet.http.HttpServletRequest;\nimport jakarta.servlet.http.HttpServletResponse;\nimport top.qaqaq.P187.Student;\n\nimport java.io.IOException;\nimport java.util.ArrayList;\nimport java.util.List;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-08 \u4e0b\u5348 1:05\n *\/\npublic class SearchStudentServlet extends HttpServlet {\n @Override\n protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\/\/ super.doGet(req, resp);\n\n \/\/ \u83b7\u53d6\u8bf7\u6c42\u7684\u53c2\u6570\n \/\/ \u53d1sql\u8bed\u53e5\u67e5\u8be2\u5b66\u751f\u7684\u4fe1\u606f\n \/\/ \u4f7f\u7528for\u5faa\u73af\u751f\u6210\u67e5\u8be2\u5230\u7684\u6570\u636e\u505a\u6a21\u62df\n List<Student> studentList = new ArrayList<Student>();\n for (int i = 0; i < 10; i++) {\n int t = i + 1;\n studentList.add(new Student(t, \"name\" + t, 18 + t, \"phone\" + t));\n }\n \/\/ \u4fdd\u5b58\u67e5\u8be2\u5230\u7684\u7ed3\u679c(\u5b66\u751f\u4fe1\u606f)\u5230request\u57df\u4e2d\n req.setAttribute(\"stuList\", studentList);\n \/\/ \u8bf7\u6c42\u8f6c\u53d1\u5230showStudent.jsp\u9875\u9762\n req.getRequestDispatcher(\"\/test\/showStudent.jsp\").forward(req, resp);\n\n }\n}\n<\/code><\/pre>\n\n\n\n<%@ page import=\"java.util.List\" %>\n<%@ page import=\"top.qaqaq.P187.Student\" %>\n<%@ page import=\"java.util.ArrayList\" %><%--\n Created by IntelliJ IDEA.\n User: ZRich\n Date: 2022\/12\/8\n Time: \u4e0b\u5348 12:11\n To change this template use File | Settings | File Templates.\n--%>\n<%@ page contentType=\"text\/html;charset=UTF-8\" language=\"java\" %>\n<html>\n<head>\n <title>Title<\/title>\n <style>\n table{\n border: 1px blue solid;\n width: 600px;\n border-collapse: collapse;\n }\n td,th{\n border: 1px blue solid;\n }\n <\/style>\n<\/head>\n<body>\n <%--\u7ec3\u4e60\u4e8c\uff1ajsp \u8f93\u51fa\u4e00\u4e2a\u8868\u683c\uff0c\u91cc\u9762\u6709 10 \u4e2a\u5b66\u751f\u4fe1\u606f\u3002--%>\n <%\n List<Student> studentList = (List<Student>) request.getAttribute(\"stuList\");\n %>\n\n <table>\n <tr>\n <td>\u7f16\u53f7<\/td>\n <td>\u59d3\u540d<\/td>\n <td>\u5e74\u9f84<\/td>\n <td>\u7535\u8bdd<\/td>\n <td>\u64cd\u4f5c<\/td>\n <\/tr>\n <%\n for (Student student : studentList){\n %>\n <tr>\n <td>\n <%=student.getId()%>\n <\/td>\n <td>\n <%=student.getName()%>\n <\/td>\n <td>\n <%=student.getAge()%>\n <\/td>\n <td>\n <%=student.getPhone()%>\n <\/td>\n <td>\u5220\u9664\u3001\u4fee\u6539<\/td>\n <\/tr>\n <%\n }\n %>\n <\/table>\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\n <servlet>\n <servlet-name>SearchStudentServlet<\/servlet-name>\n <servlet-class>top.qaqaq.P188.SearchStudentServlet<\/servlet-class>\n <\/servlet>\n <servlet-mapping>\n <servlet-name>SearchStudentServlet<\/servlet-name>\n <url-pattern>\/searchStudentServlet<\/url-pattern>\n <\/servlet-mapping><\/code><\/pre>\n\n\n\njsp-\u4ec0\u4e48\u662fListener\u76d1\u542c\u5668\u3001jsp-ServletContextListener\u76d1\u542c\u5668\u6f14\u793a<\/p>\n\n\n\n
\u4ec0\u4e48\u662f Listener \u76d1\u542c\u5668\uff1f<\/p>\n\n\n\n
1\u3001Listener \u76d1\u542c\u5668\u5b83\u662f JavaWeb \u7684\u4e09\u5927\u7ec4\u4ef6\u4e4b\u4e00\u3002JavaWeb \u7684\u4e09\u5927\u7ec4\u4ef6\u5206\u522b\u662f\uff1aServlet \u7a0b\u5e8f\u3001Filter \u8fc7\u6ee4\u5668\u3001Listener \u76d1\u542c\u5668\u3002\n2\u3001Listener \u5b83\u662f JavaEE \u7684\u89c4\u8303\uff0c\u5c31\u662f\u63a5\u53e3\n3\u3001\u76d1\u542c\u5668\u7684\u4f5c\u7528\u662f\uff0c\u76d1\u542c\u67d0\u79cd\u4e8b\u7269\u7684\u53d8\u5316\u3002\u7136\u540e\u901a\u8fc7\u56de\u8c03\u51fd\u6570\uff0c\u53cd\u9988\u7ed9\u5ba2\u6237\uff08\u7a0b\u5e8f\uff09\u53bb\u505a\u4e00\u4e9b\u76f8\u5e94\u7684\u5904\u7406\u3002<\/code><\/pre>\n\n\n\nServletContextListener \u76d1\u542c\u5668<\/p>\n\n\n\n
ServletContextListener \u5b83\u53ef\u4ee5\u76d1\u542c ServletContext \u5bf9\u8c61\u7684\u521b\u5efa\u548c\u9500\u6bc1\u3002\n\nServletContext \u5bf9\u8c61\u5728 web \u5de5\u7a0b\u542f\u52a8\u7684\u65f6\u5019\u521b\u5efa\uff0c\u5728 web \u5de5\u7a0b\u505c\u6b62\u7684\u65f6\u5019\u9500\u6bc1\u3002\n\n\u76d1\u542c\u5230\u521b\u5efa\u548c\u9500\u6bc1\u4e4b\u540e\u90fd\u4f1a\u5206\u522b\u8c03\u7528 ServletContextListener \u76d1\u542c\u5668\u7684\u65b9\u6cd5\u53cd\u9988\u3002<\/code><\/pre>\n\n\n\n\u4e24\u4e2a\u65b9\u6cd5\u5206\u522b\u662f\uff1a<\/p>\n\n\n\n
public interface ServletContextListener extends EventListener {\n\/**\n* \u5728 ServletContext \u5bf9\u8c61\u521b\u5efa\u4e4b\u540e\u9a6c\u4e0a\u8c03\u7528\uff0c\u505a\u521d\u59cb\u5316\n*\/\npublic void contextInitialized(ServletContextEvent sce);\n\/**\n* \u5728 ServletContext \u5bf9\u8c61\u9500\u6bc1\u4e4b\u540e\u8c03\u7528\n*\/\npublic void contextDestroyed(ServletContextEvent sce);\n}<\/code><\/pre>\n\n\n\n\u5982\u4f55\u4f7f\u7528 ServletContextListener \u76d1\u542c\u5668\u76d1\u542c ServletContext \u5bf9\u8c61\u3002
\u4f7f\u7528\u6b65\u9aa4\u5982\u4e0b\uff1a
1\u3001\u7f16\u5199\u4e00\u4e2a\u7c7b\u53bb\u5b9e\u73b0 ServletContextListener
2\u3001\u5b9e\u73b0\u5176\u4e24\u4e2a\u56de\u8c03\u65b9\u6cd5
3\u3001\u5230 web.xml \u4e2d\u53bb\u914d\u7f6e\u76d1\u542c\u5668<\/p>\n\n\n\n
package top.qaqaq.P190;\n\nimport jakarta.servlet.ServletContextEvent;\nimport jakarta.servlet.ServletContextListener;\n\n\/**\n * @author RichieZhang\n * @create 2022-12-08 \u4e0b\u5348 1:34\n *\/\npublic class MyServletContextListenerImpl implements ServletContextListener {\n @Override\n public void contextInitialized(ServletContextEvent sce) {\n\/\/ ServletContextListener.super.contextInitialized(sce);\n System.out.println(\"ServletContext\u5bf9\u8c61\u88ab\u521b\u5efa\u4e86\");\n }\n\n @Override\n public void contextDestroyed(ServletContextEvent sce) {\n\/\/ ServletContextListener.super.contextDestroyed(sce);\n System.out.println(\"ServletContext\u5bf9\u8c61\u88ab\u9500\u6bc1\u4e86\");\n }\n}\n<\/code><\/pre>\n\n\n\n <!-- \u914d\u7f6e\u76d1\u542c\u5668 -->\n <listener>\n <listener-class>top.qaqaq.P190.MyServletContextListenerImpl<\/listener-class>\n <\/listener><\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"jsp-\u4ec0\u4e48\u662fjsp\uff0c\u4ee5\u53ca\u5b83\u6709\u4ec0\u4e48\u4f5c\u7528\u3001jsp-jsp\u7684\u5c0f\u7ed3\u3001jsp-jsp\u9875\u9762\u7684\u672c\u8d28\u3001jsp-jsp\u7684pag […]<\/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-2223","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\/2223"}],"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=2223"}],"version-history":[{"count":3,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2223\/revisions"}],"predecessor-version":[{"id":2706,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/2223\/revisions\/2706"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/12\/image-100-1024x443.png\")
<\/div><\/figure>\n\n\n\n