{"id":1462,"date":"2024-11-12T20:55:33","date_gmt":"2024-11-12T12:55:33","guid":{"rendered":"https:\/\/note.ui11.cc\/?p=1462"},"modified":"2024-11-18T20:47:11","modified_gmt":"2024-11-18T12:47:11","slug":"javaweb%e5%a4%8d%e4%b9%a0","status":"publish","type":"post","link":"https:\/\/note.ui11.cc\/index.php\/2024\/11\/12\/javaweb%e5%a4%8d%e4%b9%a0\/","title":{"rendered":"JavaWeb\u590d\u4e60"},"content":{"rendered":"\n

\u57fa\u672c\u6982\u5ff5\uff1a<\/p>\n\n\n\n

\u9996\u5148web\u5c31\u662f\u7f51\u9875\u7684\u610f\u601d\uff0c<\/p>\n\n\n\n

\u9759\u6001web:html\uff0ccss<\/p>\n\n\n\n

\u6280\u672f\u6808\uff1aServlet\/JSP ASP PHP \u5728java\u4e2d\uff0c\u52a8\u6001web\u8d44\u6e90\u5f00\u53d1\u7684\u6280\u672f\u7edf\u79f0\u4e3ajavaweb<\/p>\n\n\n\n

JavaWeb\u5e94\u7528\u7a0b\u5e8f<\/p>\n\n\n\n

web\u5e94\u7528\u7a0b\u5e8f\uff1a\u53ef\u4ee5\u63d0\u4f9b\u6d4f\u89c8\u5668\u7684\u7a0b\u5e8f<\/p>\n\n\n\n

\u8fd9\u4e2a\u7edf\u4e00\u7684web\u8d44\u6e90\u4f1a\u88ab\u653e\u5728\u540c\u4e00\u4e2a\u6587\u4ef6\u5939\u4e0b\uff0cweb\u5e94\u7528\u7a0b\u5e8f–>tomcat\uff1a\u670d\u52a1\u5668<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u670d\u52a1\u539f\u7406\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u9759\u6001web\u5b58\u5728\u7f3a\u70b9\uff0c\u9875\u9762\u65e0\u6cd5\u52a8\u6001\u66f4\u65b0\uff0c\u6240\u6709\u7528\u6237\u770b\u5230\u7684\u90fd\u662f\u540c\u4e00\u4e2a\u9875\u9762<\/p>\n\n\n\n

\u80fd\u591f\u8ba9\u9875\u9762\u52a8\u8d77\u6765\u7684\u6280\u672f\uff1aJavaScript<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u52a8\u6001web\u670d\u52a1\u5668\uff1a<\/p>\n\n\n\n

ASP:\u5fae\u8f6f\u7684\uff0c\u56fd\u5185\u6700\u65e9\u6d41\u884c\u7684<\/p>\n\n\n\n

PHP:php\u5f00\u53d1\u901f\u5ea6\u5f88\u5feb\uff0c\u529f\u80fd\u5f3a\u5927\uff0c\u8de8\u5e73\u53f0\uff0c\u4ee3\u7801\u7b80\u5355<\/p>\n\n\n\n

\u65e0\u6cd5\u627f\u8f7d\u5927\u8bbf\u95ee\u91cf\u7684\u60c5\u51b5<\/p>\n\n\n\n

JSP\/SERVLET:<\/p>\n\n\n\n

B\/S\u67b6\u6784\uff1a\u6d4f\u89c8\u5668\u548c\u670d\u52a1\u5668<\/p>\n\n\n\n

C\/S\u67b6\u6784\uff1a\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668<\/p>\n\n\n\n

sun\u516c\u53f8\u4e3b\u63a8B\/S\u67b6\u6784<\/p>\n\n\n\n

\u670d\u52a1\u5668\u5c31\u662f\u7528\u6765\u5904\u7406\u7528\u6237\u7684\u4e00\u4e9b\u8bf7\u6c42\u548c\u54cd\u5e94<\/p>\n\n\n\n

\u4ec0\u4e48\u662fHTTP:<\/p>\n\n\n\n

HTTP(\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae)\uff1a\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u8bf7\u6c42\u54cd\u5e94\u534f\u8bae \u5b83\u901a\u5e38\u8fd0\u884c\u5728TCP\u4e0a\uff0c<\/p>\n\n\n\n

\u6587\u672c\uff1ahtml \u5b57\u7b26\u4e32<\/p>\n\n\n\n

\u8d85\u6587\u672c\uff1a\u56fe\u7247\uff0c\u97f3\u4e50\uff0c\u89c6\u9891\uff0c\u5b9a\u4f4d\uff0c\u5730\u56fe<\/p>\n\n\n\n

\u9ed8\u8ba4\u7aef\u53e380 \uff0chttps\u9ed8\u8ba4\u7aef\u53e3443 \uff08\u5b89\u5168\u7684\uff09<\/p>\n\n\n\n

http\u4e24\u4e2a\u65f6\u4ee3\uff1a<\/p>\n\n\n\n

http1.0:<\/p>\n\n\n\n

HTTP\/1.0<\/p>\n\n\n\n

http\/1.0\u5ba2\u6237\u7aef\u53ef\u4ee5\u4e0eweb\u670d\u52a1\u5668\u8fde\u63a5\u540e\uff0c\u53ea\u80fd\u83b7\u5f97\u4e00\u4e2aweb\u8d44\u6e90\uff0c\u65ad\u5f00\u8fde\u63a5<\/p>\n\n\n\n

http2.0:<\/p>\n\n\n\n

http\/1.1\uff1a\u5ba2\u6237\u7aef\u53ef\u4ee5\u4e0eweb\u670d\u52a1\u5668\u8fde\u63a5\u540e\uff0c\u53ef\u4ee5\u83b7\u5f97\u591a\u4e2aweb\u8d44\u6e90<\/p>\n\n\n\n

\u8bf7\u6c42\u5934\uff1a<\/strong><\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u54cd\u5e94\u4f53\uff1a<\/strong><\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u54cd\u5e94\u72b6\u6001\u7801\uff1a<\/p>\n\n\n\n

MAVEN\u9879\u76ee\u67b6\u6784\u7ba1\u7406\u5de5\u5177<\/p>\n\n\n\n

Servlet:<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u628a\u5b9e\u73b0\u4e86Servlet\u63a5\u53e3\u7684\u7a0b\u5e8f\u53eb\u505aServlet<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

Servlet\u63a5\u53e3\u6709\u51e0\u4e2a\u65b9\u6cd5\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u540c\u65f6\u5b83\u4e5f\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5e38\u91cf\uff1a\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u7f16\u5199\u4e00\u4e2aServlet\u7a0b\u5e8f\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u7f16\u5199Servlet\u6620\u5c04\uff1a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

<\/p>\n\n\n\n

\u521b\u5efa\u4e00\u4e2amaven\u9879\u76ee\uff1a<\/strong><\/summary>\n

\u9996\u76f8\u9009\u62e9\u521b\u5efa\u9879\u76ee\uff0c\u9009\u62e9maven\u6a21\u5757<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u7136\u540e\u547d\u540d\uff1a\u6bd4\u5982\u6211\u4eec\u5c31\u53ebTest001<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n<\/details>\n\n\n\n

\u521d\u59cb\u9879\u76ee\u6211\u4eec\u9009\u62e9quick-start<\/p>\n\n\n\n

\u8fd9\u6837\u6211\u4eec\u5c31\u5c31\u521b\u5efa\u597d\u4e86\u4e00\u4e2a\u521d\u59cb\u7684maven\u9879\u76ee<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u6211\u4eec\u53ef\u4ee5\u5220\u9664ser\u76ee\u5f55\uff0c\u56e0\u4e3a\u521d\u59cbmaven\u9879\u76eeTest001\u4ee5\u540e\u4e00\u822c\u505a\u7236\u5de5\u7a0b<\/p>\n\n\n\n

\u6211\u4eec\u5728\u7236\u5de5\u7a0b\u5f15\u5165\u7684\u5f15\u6765\u5b50\u5de5\u7a0b\u90fd\u53ef\u4ee5\u7528\uff0c\u5b50\u5de5\u7a0b\u4e0d\u5fc5\u518d\u6b21\u5f15\u5165<\/p>\n\n\n\n

\u6211\u4eec\u5728\u7236\u5de5\u7a0b\u5f15\u5165jsp\u548cservlet\u4f9d\u8d56\uff1a<\/p>\n\n\n\n

<dependency>\n      <groupId>javax.servlet.jsp<\/groupId>\n      <artifactId>javax.servlet.jsp-api<\/artifactId>\n      <version>2.3.3<\/version>\n    <\/dependency>\n    <dependency>\n      <groupId>javax.servlet<\/groupId>\n      <artifactId>javax.servlet-api<\/artifactId>\n      <version>4.0.1<\/version>\n    <\/dependency><\/code><\/pre>\n\n\n\n
\u63a5\u4e0b\u6765\u6211\u4eec\u521b\u5efa\u5b50\u5de5\u7a0bTest002<\/p>\n\n\n\n
\u9009\u62e9\u521b\u5efa\u65b0\u7684moudle<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
Archertype\u6211\u4eec\u9009\u62e9pache.maven.archetypes:maven-archetype-webapp<\/p>\n\n\n\n
\u521b\u5efajava\u76ee\u5f55\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u521b\u5efa\u5305com.it.servlet<\/p>\n\n\n\n
\u521b\u5efa\u7c7bHelloServlet,\u7ee7\u627fHttpServlet<\/p>\n\n\n\n
\u91cd\u5199get\u548cpost\u8bf7\u6c42\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u7f16\u5199\u7b80\u5355\u7684\u5185\u5bb9\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u66f4\u65b0web.xml\u5185\u5bb9\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<web-app xmlns=\"http:\/\/xmlns.jcp.org\/xml\/ns\/javaee\"\n         xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n         xsi:schemaLocation=\"http:\/\/xmlns.jcp.org\/xml\/ns\/javaee http:\/\/xmlns.jcp.org\/xml\/ns\/javaee\/web-app_4_0.xsd\"\n         version=\"4.0\"\n         metadata-complete=\"true\">\n<\/web-app><\/code><\/pre>\n\n\n\n
\u5f15\u5165\u6ce8\u518cServlet\u548c\u7f16\u5199\u8bf7\u6c42\u8def\u5f84\uff1a<\/p>\n\n\n\n
<servlet>
  <servlet-name>hello<\/servlet-name>
  <servlet-class>com.it.servlet.HellowServlet<\/servlet-class>
<\/servlet>

<servlet-mapping>
  <servlet-name>hello<\/servlet-name>
  <url-pattern>\/hello<\/url-pattern>
<\/servlet-mapping><\/pre>\n\n\n\n
\u914d\u7f6etomcat<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
D:\\VScode\\cqwaimai\\apache-tomcat-8.5.50\\apache-tomcat-8.5.50<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
war\u5305\u8def\u5f84\u4e00\u5b9a\u586b\u597d\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u8bf7\u6c42\u8def\u5f84\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
Servlec\u4e0etomcat\u7684\u5173\u7cfb\u56fe\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u5728web.xml\u4e2d\u53ef\u4ee5\u5199select\u548cselect\u7684Mapping\u95ee\u9898\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
getServletContext<\/strong>\uff1a
<\/pre>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
getServletContext<\/strong>\u53ef\u4ee5\u5728Servlet\u4e4b\u95f4\u5171\u4eab\u6570\u636e\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
package com.it.servlet;\n\nimport javax.servlet.ServletContext;\nimport javax.servlet.ServletException;\nimport javax.servlet.http.HttpServlet;\nimport javax.servlet.http.HttpServletRequest;\nimport javax.servlet.http.HttpServletResponse;\nimport java.io.IOException;\nimport java.io.PrintWriter;\n\npublic class HellowServlet extends HttpServlet {\n\n\n    @Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        System.out.println(\"\u4f60\u597d\");\n        String username=\"\u4ed8\u52c7\u95ef\";\n\n        ServletContext servletContext = this.getServletContext();\n\n        servletContext.setAttribute(\"username\",username);\/\/\u5c06\u4e00\u4e2a\u6570\u636e\u4fdd\u5b58\u5230servletContext\uff0c\u540d\u5b57\u4e3ausername,\n        \/\/\u503c\u4e3a username \u4e5f\u5c31\u662f \u201c\u4ed8\u6c38\u95ef\u201d\n        PrintWriter writer = resp.getWriter();\/\/\u54cd\u5e94\u6d41\n\n        writer.print(\"Hello Servlet\");\n    }\n\n    @Override\n    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\n    }\n}\n<\/code><\/pre>\n\n\n\n
package com.it.servlet;\n\nimport javax.servlet.ServletContext;\nimport javax.servlet.ServletException;\nimport javax.servlet.http.HttpServlet;\nimport javax.servlet.http.HttpServletRequest;\nimport javax.servlet.http.HttpServletResponse;\nimport java.io.IOException;\nimport java.io.PrintWriter;\n\npublic class GetServlet extends HttpServlet {\n\n    @Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        ServletContext servletContext = this.getServletContext();\n        String username = (String) servletContext.getAttribute(\"username\");\n        resp.setContentType(\"text\/html\");\n        resp.setCharacterEncoding(\"UTF-8\");\n        System.out.println(\"\u8f93\u51fa\u4e86\u59d3\u540d\"+username);\n         resp.getWriter().print(\"\u59d3\u540d\"+username);\n    }\n\n    @Override\n    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\n    }\n}\n<\/code><\/pre>\n\n\n\n
\u90a3\u4e48\u6211\u4eec\u5728\u7b2c\u4e00\u4e2aServlet\u4e2d\u8bbe\u7f6e\u7684username\u7684\u503c\u5c31\u53ef\u4ee5\u5728\u7b2c\u4e8c\u4e2aServlet\u4e2d\u62ff\u5230\uff0c\u524d\u63d0\u5fc5\u987b\u5148\u8bbf\u95ee\u7b2c\u4e00\u4e2aServlet\uff0c\u8fd9\u6837\u624d\u80fd\u628ausername\u7684\u503c\u8bbe\u7f6e\u4e3a\u6211\u4eec\u60f3\u8981\u7684\u503c\uff0c\u5426\u8d23\u6211\u4eec\u5728\u7b2c\u4e8c\u4e2aServlet\u4e2d\u62ff\u5230\u7684\u503c\u5c31\u4f4dnull;<\/p>\n\n\n\n
dispatcher:\u8f6c\u53d1<\/p>\n\n\n\n
deprecated\uff1a\u5df2\u8fc7\u65f6\u7684<\/p>\n\n\n\n
\u83b7\u53d6\u521d\u59cb\u5316\u53c2\u6570\uff1a<\/p>\n\n\n\n
\u4e00\uff1a\u5728xml\u6587\u4ef6\u4e2d\u5b9a\u4e49\u521d\u59cb\u5316\u53c2\u6570<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u7b2c\u4e8c\u6b65\uff1a<\/p>\n\n\n\n
\u83b7\u53d6\u521d\u59cb\u5316\u53c2\u6570\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u8bf7\u6c42\u8f6c\u53d1\uff1a<\/strong><\/p>\n\n\n\n
\u901a\u4fd7\u7684\u8bb2\u5c31\u662f\uff0c\u8bf7\u6c42\u8def\u5f84A\u7684\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u8bf7\u6c42\u8def\u5f84B\u4e86<\/p>\n\n\n\n
\u5728xml\u6b63\u5e38\u914d\u7f6e<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u7136\u540e\u5728\u5728\u8f6c\u53d1\u7c7b\u4e2d\u8c03\u7528getRequestDispatcher\u63a5\u53e3<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u5373\u53ef\u5b9e\u73b0\u8f6c\u53d1<\/p>\n\n\n\n
\u8bfb\u53d6\u8d44\u6e90\u6587\u4ef6\uff1a<\/p>\n\n\n\n
Properties<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u521b\u5efa\u4e00\u4e2aPropertirs\u6587\u4ef6\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u6d41\u6765\u8bfb\u53d6\u6587\u4ef6\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\u8bfb\u53d6\u6210\u529f:<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
Servlet\u91cc\u9762\u6709\u8fde\u4e2a\u53c2\u6570HttpServletResponse,HttpServletRequest<\/p>\n\n\n\n
\u5bf9\u4e8eResponse:\u8d1f\u8d23\u5411\u6d4f\u89c8\u5668\u53d1\u9001\u6570\u636e\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
getOutputstream()\u7528\u6765\u53d1\u9001\u6d41\u7684\u65b9\u6cd5\uff0c\u6bd4\u5982\u6587\u4ef6\uff0c\u56fe\u7247\uff0c\u6216\u8005\u97f3\u9891<\/p>\n\n\n\n
getwriter(\uff09\u4e00\u822c\u7528\u6765\u4f20\u8f93\u6587\u5b57\u7c7b\u7684<\/p>\n\n\n\n
\u5e38\u89c1\u5e94\u7528\uff1a<\/strong><\/em><\/p>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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