{"id":5945,"date":"2024-04-17T00:39:11","date_gmt":"2024-04-16T16:39:11","guid":{"rendered":"http:\/\/zyg.luchers.cn\/?p=5945"},"modified":"2024-04-17T00:39:11","modified_gmt":"2024-04-16T16:39:11","slug":"%e4%b8%83%e3%80%81servlet","status":"publish","type":"post","link":"http:\/\/zyg.luchers.cn\/index.php\/2024\/04\/17\/%e4%b8%83%e3%80%81servlet\/","title":{"rendered":"\u4e03\u3001Servlet"},"content":{"rendered":"

\u4e03\u3001Servlet<\/h1>\n

1\u3001Servlet\u6280\u672f<\/h2>\n

1.1\u3001\u4ec0\u4e48\u662fServlet<\/h3>\n

1\u3001Servlet \u662fJavaEE\u89c4\u8303\u4e4b\u4e00\u3002\u89c4\u8303\u5c31\u662f\u63a5\u53e3<\/p>\n

2\u3001Servlet \u662fJavaWeb\u4e09\u5927\u7ec4\u4ef6\u4e4b\u4e00<\/p>\n

3\u3001JavaWeb\u4e09\u5927\u7ec4\u4ef6\u5c31\u662f\uff1aServlet\u7a0b\u5e8f\u3001Filter\u8fc7\u6ee4\u5668\u3001Listener\u76d1\u542c\u5668<\/p>\n

4\u3001Servlet\u662f\u8fd0\u884c\u5728\u670d\u52a1\u5668\u4e0a\u7684\u5458\u5de5java\u5c0f\u7a0b\u5e8f\uff0c\u5b83\u53ef\u4ee5\u63a5\u6536\u5ba2\u6237\u7aef\u53d1\u9001\u8fc7\u6765\u7684\u8bf7\u6c42\uff0c\u5e76\u54cd\u5e94\u6570\u636e\u7ed9\u5ba2\u6237\u7aef\u3002<\/strong><\/p>\n

5\u3001Servlet=Server+applet<\/p>\n

6\u3001Servlet\uff1a\u670d\u52a1\u7aef\u7684\u5c0f\u7a0b\u5e8f<\/p>\n

7\u3001\u4f8b\u5b50<\/p>\n

\"image-20230408220725800\"<\/div><\/p>\n

\u2764\ufe0f\u2764\ufe0f\u2764\ufe0f\u2764\ufe0f8\u3001\u8fc7\u7a0b<\/p>\n

\"image-20230408220813463\"<\/div><\/p>\n

1.2\u3001\u5b9e\u73b0Servlet\u7a0b\u5e8f<\/h3>\n

1\u3001\u6b65\u9aa4<\/h4>\n

1\u3001\u7f16\u5199\u4e00\u4e2a\u7c7b\u53bb\u5b9e\u73b0Servlet\u63a5\u53e3<\/p>\n

2\u3001\u5b9e\u73b0service\u65b9\u6cd5\uff0c\u5904\u7406\u8bf7\u6c42\uff0c\u5e76\u54cd\u5e94\u6570\u636e<\/p>\n

3\u3001\u5230web.xml\u4e2d\u53bb\u914d\u7f6eservlet\u7a0b\u5e8f\u7684\u8bbf\u95ee\u5730\u5740<\/p>\n

2\u3001\u4f8b\u5b50<\/h4>\n

1\u3001java\u4ee3\u7801\uff08servlet\uff09<\/p>\n

package com.qtServlet;\n\nimport javax.servlet.*;\nimport java.io.IOException;\nimport java.io.PrintWriter;\n\npublic class HelloServlet implements Servlet {\n    @Override\n    public void init(ServletConfig servletConfig) throws ServletException {\n\n    }\n\n    @Override\n    public ServletConfig getServletConfig() {\n        return null;\n    }\n\n    @Override\n    public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {\n        System.out.println("Hello Servlet \u88ab\u8bbf\u95ee\u4e86");\n    }\n\n    @Override\n    public String getServletInfo() {\n        return null;\n    }\n\n    @Override\n    public void destroy() {\n\n    }\n}\n<\/code><\/pre>\n
2\u3001web.xml<\/p>\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\n    <servlet>\n        <servlet-name>helloServlet<\/servlet-name>\n        <servlet-class>com.qtServlet.HelloServlet<\/servlet-class>\n    <\/servlet>\n    <servlet-mapping>\n        <servlet-name>helloServlet<\/servlet-name>\n        <url-pattern>\/helloServlet<\/url-pattern>\n    <\/servlet-mapping>\n\n<\/web-app>\n<\/code><\/pre>\n
3\u3001index.html<\/p>\n
<!DOCTYPE html>\n<html lang="en">\n<head>\n    <meta charset="UTF-8">\n    <title>w\u6211\u662f\u9996\u9875<\/title>\n<\/head>\n<body>\n    <h1>\u6211\u662f\u5927\u5237\u4e2a\uff01\uff01\uff01<\/h1>\n\n    <a href="\/06_servlet\/helloServlet">\u8fdb\u5165servlet<\/a>\n<\/body>\n<\/html><\/code><\/pre>\n
3\u3001\u8def\u5f84<\/h4>\n
\"image-20230408225921918\"<\/div><\/p>\n
1.3\u3001Servlet\u5730\u5740\u5982\u4f55\u5b9a\u4f4d\u5230Servlet\u7a0b\u5e8f<\/h3>\n
1\u3001\u56fe\u89e3<\/h4>\n
\"image-20230408211113884\"<\/div><\/p>\n
1.4\u3001Servlet\u751f\u547d\u5468\u671f<\/h3>\n
1\u3001\u65b9\u6cd5\u987a\u5e8f<\/h4>\n
\"image-20230408213918732\"<\/div><\/p>\n
1.5\u3001GET\u548cPOST\u8bf7\u6c42\u7684\u5206\u53d1\u5904\u7406<\/h3>\n
1\u3001\u5185\u5bb9<\/p>\n
\"image-20230408214020356\"<\/div><\/p>\n
1.6\u3001\u901a\u8fc7\u7ee7\u627fHTTPServlet\u5b9e\u73b0Servlelt\u7a0b\u5e8f<\/h3>\n
1\u3001\u65b9\u6cd5<\/p>\n
@Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        System.out.println("\u8fd9\u91cc\u662fGet\u65b9\u6cd5");\n    }\n\n    @Override\n    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        System.out.println("\u8fd9\u91cc\u662fPOST\u65b9\u6cd5");\n    }<\/code><\/pre>\n
1.7\u3001\u4f7f\u7528Idea\u521b\u5efaServlet<\/h3>\n
1\u3001\u6b65\u9aa4<\/h4>\n
1\u3001\u5bf9src\u53f3\u952e\uff0cNew\uff0cServlet<\/p>\n
1.8\u3001\u6574\u4e2aServlet\u7c7b\u7684\u7ee7\u627f\u4f53\u7cfb<\/h3>\n
1\u3001\u7ee7\u627f\u4f53\u7cfb\u56fe<\/h4>\n
\"image-20230409010255730\"<\/div><\/p>\n
2\u3001ServletConfig\u7c7b<\/h2>\n
1\u3001\u662fservlet\u7a0b\u5e8f\u7684\u914d\u7f6e\u4fe1\u606f\u7c7b<\/p>\n
2\u3001Servlet\u7a0b\u5e8f\u548cServletConfig\u5bf9\u8c61\u90fd\u662fTomcat\u8d1f\u8d23\u521b\u5efa\uff0c\u6211\u4eec\u8d1f\u8d23\u4f7f\u7528<\/p>\n
3\u3001Servlet\u67e5\u8be2\u9ed8\u8ba4\u7b2c\u4e00\u6b21\u8bbf\u95ee\u7684\u65f6\u5019\u521b\u5efa\uff0cServletConfig\u662f\u6bcf\u4e2aServlet\u7a0b\u5e8f\u521b\u5efa\u65f6\uff0c\u5c31\u521b\u5efa\u4e00\u4e2a\u5bf9\u5e94\u7684ServletConfig\u5bf9\u8c61<\/p>\n
4\u3001\u6bcf\u4e2aServletConfig\u4fe1\u606f\u5728\u6bcf\u4e2aServlet\u662f\u72ec\u7acb\u7684<\/p>\n
2.1\u3001ServletConfig\u7c7b\u7684\u4e09\u5927\u4f5c\u7528<\/h3>\n
1\u3001\u53ef\u4ee5\u83b7\u53d6Servlet\u7a0b\u5e8f\u7684\u522b\u540dservlet-name\u7684\u503c<\/p>\n
2\u3001\u83b7\u53d6\u521d\u59cb\u5316\u53c2\u6570init-param\u7684\u503c<\/p>\n
3\u3001\u83b7\u53d6\u53bbServletContext\u5bf9\u8c61<\/p>\n
4\u3001\u8be5\u7c7b\u4e00\u822c\u5728 init\u4e2d\u4f7f\u7528<\/strong><\/p>\n
5\u3001\u91cd\u5199init\u65b9\u6cd5\u91cc\u9762\uff0c\u4e00\u5b9a\u8981\u8c03\u7528\u5f17\u96f7\u7684init(ServletConfig)\u64cd\u4f5c<\/strong><\/p>\n
3\u3001ServletContext\u7c7b<\/h2>\n
3.1\u3001\u4ec0\u4e48\u662fServletContext<\/h3>\n
1\u3001ServletContext\u662f\u4e00\u4e2a\u63a5\u53e3\uff0c\u8868\u793aServlet\u4e0a\u4e0b\u6587<\/p>\n
2\u3001\u4e00\u4e2aweb\u5de5\u7a0b\uff0c\u53ea\u6709\u4e00\u4e2aServletC\u5bf9\u8c61\u5b9e\u4f8b<\/p>\n
3\u3001ServletContext\u5bf9\u8c61\u662f\u4e00\u4e2a\u57df\u5bf9\u8c61<\/p>\n
4\u3001ServletContext\u662f\u5728web\u5de5\u7a0b\u90e8\u7f72\u542f\u52a8\u7684\u65f6\u5019\u521b\u5efa\u3002\u5728web\u5de5\u7a0b\u505c\u6b62\u7684\u65f6\u5019\u9500\u6bc1<\/p>\n
1\u3001\u4ec0\u4e48\u662f\u57df\u5bf9\u8c61<\/h4>\n
1\u3001\u57df\u5bf9\u8c61\uff0c\u662f\u53ef\u4ee5\u50cfMap\u4e00\u6837\u5b58\u53d6\u6570\u636e\u7684\u5bf9\u8c61\uff0c\u53eb\u57df\u5bf9\u8c61<\/p>\n
2\u3001\u8fd9\u91cc\u7684\u57df\u6307\u7684\u662f\u5b58\u53d6\u6570\u636e\u7684\u64cd\u4f5c\u8303\u56f4\uff0c\u6574\u4e2aweb\u5de5\u7a0b\u3002<\/p>\n
2\u3001Map\u548c\u57df\u5bf9\u8c61\u6bd4\u8f83<\/h4>\n
\"image-20230410121051908\"<\/div><\/p>\n
3.2\u3001ServletContext\u7c7b\u7684\u56db\u4e2a\u4f5c\u7528<\/h3>\n
1\u3001\u5185\u5bb9<\/h4>\n
1\u3001\u83b7\u53d6web.xml \u4e2d\u7684\u914d\u7f6e\u4e0a\u4e0b\u6587\u53c2\u6570context-param<\/p>\n
2\u3001\u83b7\u53d6\u5f53\u524d\u7684\u5de5\u7a0b\u8def\u5f84\uff0c\u683c\u5f0f\uff1a\/\u5de5\u7a0b\u8def\u5f84<\/p>\n
3\u3001\u83b7\u53d6\u5de5\u7a0b\u90e8\u7f72\u540e\u5728\u670d\u52a1\u5668\u786c\u76d8\u4e0a\u7684\u7edd\u5bf9\u8def\u5f84<\/p>\n
4\u3001\u50cfMap \u4e00\u6837\u5b58\u53d6\u6570\u636e<\/p>\n
2\u3001\u4f8b\u5b50<\/h4>\n
1\u3001xml\u6587\u4ef6<\/p>\n
<servlet>\n        <servlet-name>ContextServlet<\/servlet-name>\n        <servlet-class>com.qt.Servlets.ContextServlet<\/servlet-class>\n        <init-param>\n            <param-name>username<\/param-name>\n            <param-value>root<\/param-value>\n        <\/init-param>\n        <init-param>\n            <param-name>url<\/param-name>\n            <param-value>jdbc:mysql:localhost:3306\/test<\/param-value>\n        <\/init-param>\n        <init-param>\n            <param-name>password<\/param-name>\n            <param-value>root<\/param-value>\n        <\/init-param>\n    <\/servlet>\n\n    <servlet-mapping>\n        <servlet-name>ContextServlet<\/servlet-name>\n        <url-pattern>\/context2<\/url-pattern>\n    <\/servlet-mapping><\/code><\/pre>\n
2\u3001java\u6587\u4ef6<\/p>\n
package com.qt.Servlets;\n\nimport javax.servlet.ServletConfig;\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;\n\npublic class ContextServlet extends HttpServlet {\n    @Override\n    public void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException {\n\/\/        super.init();\n        ServletContext context = getServletConfig().getServletContext();\n\n\/\/        \u83b7\u53d6\u521d\u59cb\u5316\u53c2\u6570init-param\n        System.out.println("\u521d\u59cb\u5316\u53c2\u6570username\u7684\u503c\u662f\uff1a"+context.getInitParameter("username"));\n        System.out.println("\u521d\u59cb\u5316\u53c2\u6570url\u7684\u503c\u662f\uff1a"+context.getInitParameter("url"));\n\/\/        \u83b7\u53d6ServletContext\u5bf9\u8c61\n        System.out.println(context);\n\n        System.out.println("\u5f53\u524d\u5de5\u7a0b\u8def\u5f84"+context.getContextPath());\n\n        System.out.println("\u5de5\u7a0b\u90e8\u7f72\u7684\u8def\u5f84\uff1a"+context.getRealPath("\/"));\n\n\/\/        System.out.println("\u5de5\u7a0b\u4e0b\u7684css");\n\n        System.out.println("\u4fdd\u5b58\u4e4b\u524d\uff0c\u83b7\u53d6Context\u7684key1\u503c\u662f\uff1a"+context.getAttribute("key1"));\n\n        context.setAttribute("key1","value1");\n\n        System.out.println("\u83b7\u53d6Context\u7684key1\u503c"+context.getAttribute("key1"));\n    }\n}\n<\/code><\/pre>\n
4\u3001HTTP\u534f\u8bae<\/h2>\n
4.1\u3001\u4ec0\u4e48\u662fHTTP\u534f\u8bae<\/h3>\n
1\u3001\u5185\u5bb9<\/h4>\n
1\u3001\u534f\u8bae\u662f\u6307\u53cc\u65b9\uff0c\u6216\u591a\u65b9\uff0c\u76f8\u4e92\u7ea6\u5b9a\u597d\uff0c\u5927\u5bb6\u90fd\u9700\u8981\u9075\u5b88\u7684\u89c4\u5219\uff0c\u53eb\u534f\u8bae\u3002<\/p>\n
2\u3001HTTP\u534f\u8bae\uff0c\u662f\u6307\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u901a\u4fe1\u65f6\uff0c\u53d1\u9001\u7684\u6570\u636e\uff0c\u9700\u8981\u9075\u5b88\u7684\u89c4\u5219\uff0c\u53ebHTTP\u534f\u8bae<\/p>\n
3\u3001HTTP\u534f\u8bae\u4e2d\u7684\u6570\u636e\u4e5f\u53eb\u62a5\u6587\u3002<\/p>\n
4.2\u3001\u8bf7\u6c42\u7684HTTP\u534f\u8bae\u7684\u683c\u5f0f<\/h3>\n
1\u3001\u5ba2\u6237\u7aef\u7ed9\u670d\u52a1\u5668\u53d1\u9001\u7684\u6570\u636e\u53eb\u8bf7\u6c42<\/p>\n
2\u3001\u670d\u52a1\u5668\u7ed9\u5ba2\u6237\u7aef\u56de\u4f20\u6570\u636e\u53eb\u54cd\u5e94<\/p>\n
3\u3001\u8bf7\u6c42\u53c8\u5206\u4e3aGET\u8bf7\u6c42\u548cPOST\u8bf7\u6c42<\/p>\n
1\u3001GET\u8bf7\u6c42\u5185\u5bb9\u683c\u5f0f<\/h4>\n
1\u3001\u5185\u5bb9<\/p>\n
\"image-20230410134507608\"<\/div><\/p>\n
2\u3001\u56fe\u89e3<\/p>\n
\"image-20230410134545951\"<\/div><\/p>\n
2\u3001POST\u8bf7\u6c42\u5185\u5bb9\u683c\u5f0f<\/h4>\n
1\u3001\u5185\u5bb9<\/p>\n
\"image-20230410134635989\"<\/div><\/p>\n
2\u3001\u56fe\u89e3<\/p>\n
\"image-20230410134654055\"<\/div><\/p>\n
3\u3001\u5e38\u7528\u7684\u8bf7\u6c42\u5934\u8bf4\u660e<\/h4>\n\n\n\n\n\n\n\n\n
\u8bf7\u6c42\u5934<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n
Accept<\/td>\n\u8868\u793a\u5ba2\u6237\u7aef\u53ef\u4ee5\u63a5\u53d7\u7684\u6570\u636e\u7c7b\u578b<\/td>\n<\/tr>\n
Accept-Language<\/td>\n\u8868\u793a\u5ba2\u6237\u7aef\u53ef\u4ee5\u63a5\u6536\u7684\u8bed\u8a00\u7c7b\u578b<\/td>\n<\/tr>\n
User-Agent<\/td>\n\u8868\u793a\u5ba2\u6237\u7aef\u6d4f\u89c8\u5668\u7684\u4fe1\u606f<\/td>\n<\/tr>\n
Host<\/td>\n\u8868\u793a\u8bf7\u6c42\u65f6\u7684\u670d\u52a1\u5668ip\u548c\u7aef\u53e3\u53f7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4\u3001\u54ea\u4e9b\u662fGET\u8bf7\u6c42\uff0c\u54ea\u4e9b\u662fPOST\u8bf7\u6c42<\/h4>\n
1\u3001GET\u8bf7\u6c42<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Get\u8bf7\u6c42\u6709\uff1a<\/th>\n<\/tr>\n<\/thead>\n
form\u6807\u7b7e   method=get<\/td>\n<\/tr>\n
a\u6807\u7b7e<\/td>\n<\/tr>\n
link\u6807\u7b7e\u5f15\u5165css<\/td>\n<\/tr>\n
Script\u6807\u7b7e\u5f15\u5165js\u6587\u4ef6<\/td>\n<\/tr>\n
img\u6807\u7b7e\u5f15\u5165\u56fe\u7247<\/td>\n<\/tr>\n
iframe\u5f15\u5165html\u9875\u9762<\/td>\n<\/tr>\n
\u5728\u6d4f\u89c8\u5668\u5730\u5740\u680f\u4e2d\u8f93\u5165\u5730\u5740\u540e\u56de\u8f66<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
2\u3001POST\u8bf7\u6c42<\/p>\n\n\n\n\n\n
POST\u8bf7\u6c42\u6709\uff1a<\/th>\n<\/tr>\n<\/thead>\n
form\u6807\u7b7e     method=post<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4.3\u3001\u54cd\u5e94\u7684HTTP\u534f\u8bae\u683c\u5f0f<\/h3>\n
1\u3001\u5185\u5bb9<\/h4>\n
\"image-20230410135234572\"<\/div><\/p>\n
2\u3001\u56fe\u4f8b<\/h4>\n
\"image-20230410135254968\"<\/div><\/p>\n
4.4\u3001\u5e38\u7528\u7684\u54cd\u5e94\u7801\u8bf4\u660e<\/h3>\n\n\n\n\n\n\n\n\n
\u54cd\u5e94\u7801<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n
200<\/td>\n\u8868\u793a\u8bf7\u6c42\u6210\u529f<\/td>\n<\/tr>\n
302<\/td>\n\u8868\u793a\u8bf7\u6c42\u91cd\u5b9a\u5411<\/td>\n<\/tr>\n
404<\/td>\n\u8868\u793a\u8bf7\u6c42\u670d\u52a1\u5668\u5df2\u7ecf\u6536\u5230\u4e86\uff0c\u4f46\u662f\u4f60\u8981\u7684\u6570\u636e\u4e0d\u5b58\u5728\uff08\u8bf7\u6c42\u5730\u5740\u9519\u8bef\uff09<\/td>\n<\/tr>\n
500<\/td>\n\u8868\u793a\u670d\u52a1\u5668\u5df2\u7ecf\u6536\u5230\u8bf7\u6c42\uff0c\u4f46\u670d\u52a1\u5668\u5185\u90e8\u9519\u8bef\uff08\u4ee3\u7801\u9519\u8bef\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
4.5\u3001MIME\u7c7b\u578b\u8bf4\u660e<\/h3>\n
1\u3001\u8bf4\u660e\u662fMIME<\/h4>\n
1\u3001MIME\u662fHTTP\u534f\u8bae\u4e2d\u7684\u6570\u636e\u7c7b\u578b<\/p>\n
2\u3001MIME\u7684\u82f1\u6587\u5168\u79f0\u662f\u201cMultipurpose Internet Mail Extensions\u201d\u591a\u529f\u80fd\u7684Internet\u90ae\u4ef6\u6269\u5145\u670d\u52a1\u3002<\/p>\n
3\u3001MIME\u7c7b\u578b\u7684\u683c\u5f0f\u662f"\u5927\u7c7b\u578b\/\u5c0f\u7c7b\u578b"\uff0c\u5e76\u4e0e\u67d0\u4e00\u79cd\u6587\u4ef6\u7684\u6269\u5c55\u540d\u76f8\u5bf9\u5e94<\/p>\n
2\u3001\u5e38\u89c1\u7684MIME\u7c7b\u578b<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u6587\u4ef6<\/th>\n\u6269\u5c55\u540d<\/th>\nMIME\u7c7b\u578b<\/th>\n<\/tr>\n<\/thead>\n
\u8d85\u6587\u672c\u6807\u7b7e\u8bed\u8a00\u6587\u672c<\/td>\n.html\uff0chtm<\/td>\ntext\/html<\/td>\n<\/tr>\n
\u666e\u901a\u6587\u672c<\/td>\n.txt<\/td>\ntext\/plain<\/td>\n<\/tr>\n
RTF\u6587\u672c<\/td>\n.rtf<\/td>\napplication\/rtf<\/td>\n<\/tr>\n
GIF\u56fe\u5f62<\/td>\n.gif<\/td>\nimage\/gif<\/td>\n<\/tr>\n
JPEG\u56fe\u5f62<\/td>\n.jpeg\uff0c.jpg<\/td>\nimage\/jpeg<\/td>\n<\/tr>\n
au\u58f0\u97f3\u6587\u4ef6<\/td>\n.au<\/td>\naudio\/basic<\/td>\n<\/tr>\n
MIDI\u97f3\u4e50\u6587\u4ef6<\/td>\n.mid\uff0c.midi<\/td>\naudio\/midi\uff0caudio\/x-midi<\/td>\n<\/tr>\n
RealAudio\u97f3\u4e50\u6587\u4ef6<\/td>\n.ra\uff0c.ram<\/td>\naudio\/x-pn-realaudio<\/td>\n<\/tr>\n
MPEG\u6587\u4ef6<\/td>\n.mpg\uff0c.mpeg<\/td>\nvideo\/mpeg<\/td>\n<\/tr>\n
AVI\u6587\u4ef6<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
GZIP\u6587\u4ef6<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
TAR\u6587\u4ef6<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
3\u3001\u8c37\u6b4c\u5982\u4f55\u67e5\u770bHTTP\u534f\u8bae<\/h4>\n
1\u3001\u8c37\u6b4c<\/p>\n
\"image-20230410140927172\"<\/div><\/p>\n
5\u3001HTTPServletRequest<\/h2>\n
5.1\u3001HTTPServletRequest\u7c7b\u6709\u4ec0\u4e48\u4f5c\u7528<\/h3>\n
1\u3001\u5185\u5bb9<\/h4>\n
1\u3001\u6bcf\u6b21\u53ea\u8981\u6709\u8bf7\u6c42\u8fdb\u5165Tomcat\u670d\u52a1\u5668\uff0cTomcat\u670d\u52a1\u5668\u5c31\u4f1a\u628a\u8bf7\u6c42\u8fc7\u6765\u7684HTTP\u534f\u8bae\u4fe1\u606f\u89e3\u6790\u5c01\u88c5\u5230Request\u5bf9\u8c61\u4e2d\u3002\u7136\u540e\u4f20\u9012\u5230servlet\u65b9\u6cd5\uff08doGet\u548cdoPost\uff09\u4e2d\u7ed9\u6211\u4eec\u4f7f\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7HTTPServletRequest\u5bf9\u8c61\uff0c\u83b7\u53d6\u6240\u6709\u8bf7\u6c42\u7684\u4fe1\u606f<\/p>\n
5.2\u3001HTTPServletRequest\u7c7b\u7684\u5e38\u7528\u65b9\u6cd5<\/h3>\n
1\u3001\u5185\u5bb9<\/h4>\n
\"image-20230410151803323\"<\/div><\/p>\n
2\u3001\u4f8b\u5b50<\/h4>\n
1\u3001java\u4ee3\u7801<\/p>\n
package com.qt.servlet;\n\nimport javax.servlet.ServletException;\nimport javax.servlet.http.HttpServlet;\nimport javax.servlet.http.HttpServletRequest;\nimport javax.servlet.http.HttpServletResponse;\nimport java.io.IOException;\n\npublic class RequestAPIServlet extends HttpServlet {\n    @Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n\/\/        \u83b7\u53d6\u8bf7\u6c42\u7684\u8d44\u6e90\u8def\u5f84\n        System.out.println("URI=="+req.getRequestURI());\n\/\/        \u547c\u6c14\u8bf7\u6c42\u7684\u540c\u610f\u8d44\u6e90\u5b9a\u4f4d\u7b26\uff08\u7edd\u5bf9\u8def\u5f84\uff09\n        System.out.println("URL=="+req.getRequestURL());\n\/\/        \u83b7\u53d6\u5ba2\u6237\u7aef\u7684ip\u5730\u5740\n        System.out.println("\u5730\u5740ip\uff1a"+req.getRemoteHost());\n\/\/        \u83b7\u53d6\u8bf7\u6c42\u5934\n        System.out.println("\u8bf7\u6c42\u5934\uff1a"+req.getHeader("User-Agent"));\n\/\/        \u83b7\u53d6\u8bf7\u6c42\u7684\u65b9\u5f0fget\u6216\u8005post\n        System.out.println("\u8bf7\u6c42\u65b9\u5f0f\uff1a"+req.getMethod());\n    }\n\n    @Override\n    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        super.doPost(req, resp);\n    }\n}\n<\/code><\/pre>\n
2\u3001web.xml\u4ee3\u7801<\/p>\n
    <servlet>\n        <servlet-name>RequestAPIServlet<\/servlet-name>\n        <servlet-class>com.qt.servlet.RequestAPIServlet<\/servlet-class>\n    <\/servlet>\n    <servlet-mapping>\n        <servlet-name>RequestAPIServlet<\/servlet-name>\n        <url-pattern>\/requestAPIServlet<\/url-pattern>\n    <\/servlet-mapping><\/code><\/pre>\n
5.3\u3001\u5982\u4f55\u83b7\u53d6\u8bf7\u6c42\u53c2\u6570<\/h3>\n
1\u3001\u4f8b\u5b50<\/h4>\n
1\u3001java\u4ee3\u7801<\/p>\n
package com.qt.servlet;\n\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.util.Arrays;\n\npublic class ParameterServlet extends HttpServlet {\n    @Override\n    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {\n        String username = req.getParameter("username");\n        String password = req.getParameter("password");\n        String[] hobby = req.getParameterValues("hobby");\n\n        System.out.println("\u7528\u6237\u540d\uff1a"+username);\n        System.out.println("\u5bc6\u7801"+password);\n        System.out.println("\u5174\u8da3\u7231\u597d\uff1a"+ Arrays.asList(hobby));\n    }\n}<\/code><\/pre>\n
2\u3001html\u4ee3\u7801<\/p>\n
<!DOCTYPE html>\n<html lang="en">\n<head>\n    <meta charset="UTF-8">\n    <title>Title<\/title>\n<\/head>\n<body>\n    <form action="http:\/\/localhost:8080\/07_servlet\/parameterServlet" method="get" >\n        \u7528\u6237\u540d\uff1a<input type="text" name="username"><br\/>\n        \u5bc6\u7801\uff1a<input type="text" name="password"><br\/>\n        \u5174\u8da3\u7231\u597d\uff1a<input type="checkbox" name="hobby" value="cpp">c++\n                <input type="checkbox" name="hobby" value="java">java\n                <input type="checkbox" name="hobby" value="js">JavaScript<br\/>\n        <input type="submit" >\n\n    <\/form>\n\n<\/body>\n<\/html><\/code><\/pre>\n
3\u3001web.xml\u4ee3\u7801<\/p>\n
<servlet>\n    <servlet-name>ParameterServlet<\/servlet-name>\n    <servlet-class>com.qt.servlet.ParameterServlet<\/servlet-class>\n<\/servlet>\n<servlet-mapping>\n    <servlet-name>ParameterServlet<\/servlet-name>\n    <url-pattern>\/parameterServlet<\/url-pattern>\n<\/servlet-mapping><\/code><\/pre>\n
2\u3001doGet\u8bf7\u6c42\u7684\u4e2d\u6587\u4e71\u7801\u89e3\u51b3<\/h4>\n
1\u3001\u5185\u5bb9<\/p>\n
\"image-20230410152214350\"<\/div><\/p>\n
3\u3001doPost\u8bf7\u6c42\u7684\u4e2d\u6587\u4e71\u7801\u89e3\u51b3<\/h4>\n
1\u3001\u5185\u5bb9<\/p>\n
\"image-20230410152236382\"<\/div><\/p>\n
2\u3001\u6ce8\u610f\uff1a\u8be5\u65b9\u6cd5\u8981\u5199\u5728\u8bf7\u6c42\u6700\u524d\u9762\uff0c\u5426\u5219\u4e0d\u7ba1\u7528<\/p>\n
5.4\u3001\u8bf7\u6c42\u7684\u8f6c\u53d1<\/h3>\n
1\u3001\u4ec0\u4e48\u662f\u8bf7\u6c42\u8f6c\u53d1<\/h4>\n
1\u3001\u8bf7\u6c42\u8f6c\u53d1\u662f\u6307\uff0c\u670d\u52a1\u5668\u6536\u5230\u8bf7\u6c42\u540e\uff0c\u4ece\u4e00\u6b21\u8d44\u6e90\u8df3\u5230\u53e6\u4e00\u4e2a\u8d44\u6e90\u7684<\/p>\n
2\u3001\u8bf7\u6c42\u8f6c\u53d1\u7684\u7279\u70b9<\/h4>\n
1\u3001\u6d4f\u89c8\u5668\u5730\u5740\u680f\u6ca1\u6709\u53d8\u5316<\/p>\n
2\u3001\u4ed6\u4eec\u662f\u4e00\u6b21\u8bf7\u6c42<\/p>\n
3\u3001\u4ed6\u4eec\u5171\u4eabRequest\u57df\u4e2d\u7684\u6570\u636e<\/p>\n
4\u3001\u53ef\u4ee5\u8f6c\u53d1\u5230WEB-INF\u76ee\u5f55\u4e0b<\/p>\n
5\u3001\u4e0d\u53ef\u4ee5\u8bbf\u95ee\u5de5\u7a0b\u4ee5\u5916\u7684\u8d44\u6e90<\/p>\n
3\u3001\u56fe\u89e3\u8f6c\u53d1\u8bf7\u6c42<\/h4>\n
1\u3001\u5185\u5bb9<\/p>\n
\"image-20230410160700514\"<\/div><\/p>\n
5.5\u3001base\u6807\u7b7e\u7684\u4f5c\u7528<\/h3>\n
1\u3001base\u6807\u7b7e<\/h4>\n
1\u3001\\\uff1a\u53ef\u4ee5\u8bbe\u7f6e\u5f53\u524d\u9875\u9762\u4e2d\u6240\u6709\u76f8\u5bf9\u8def\u5f84\u5de5\u4f5c\u65f6\uff0c\u53c2\u7167\u54ea\u4e2a\u8def\u5f84\u6765\u8fdb\u884c\u8df3\u8f6c\u3002<\/p>\n
2\u3001\u683c\u5f0f\uff1a\\\u5176\u4e2dxxx\u4e3a\u5730\u5740<\/p>\n
2\u3001\u56fe\u89e3\u4f5c\u7528<\/h4>\n
\"image-20230410224440401\"<\/div><\/p>\n
5.6\u3001Web\u4e2d\u7684\u76f8\u5bf9\u8def\u5f84\u548c\u7edd\u5bf9\u8def\u5f84<\/h3>\n
1\u3001\u76f8\u5bf9\u8def\u5f84<\/h4>\n
1\u3001
\"image-20230410225154091\"<\/div><\/p>\n
2\u3001\u7edd\u5bf9\u8def\u5f84<\/h4>\n
1\u3001
\"image-20230410225512136\"<\/div><\/p>\n
3\u3001\u5b9e\u9645\u5f00\u53d1\u4e2d<\/h4>\n
1\u3001\u7edd\u5bf9\u8def\u5f84<\/p>\n
2\u3001base+\u76f8\u5bf9\u8def\u5f84<\/p>\n
5.7\u3001web\u4e2d\u7684 \/ \u659c\u6760\u7684\u4e0d\u540c\u542b\u4e49<\/h3>\n
1\u3001\u5728web\u4e2d<\/h4>\n
1\u3001\u662f\u4e00\u79cd\u7edd\u5bf9\u8def\u5f84<\/p>\n
2\u3001\u5728\u6d4f\u89c8\u5668\u89e3\u6790\u4e2d<\/h4>\n
1\u3001\u5f97\u5230\u7684\u5730\u5740\u662f\uff1ahttp:\/\/ip:port\/<\/a><\/p>\n
2\u3001\\\u659c\u6760\\<\/a><\/p>\n
3\u3001\u5728\u670d\u52a1\u5668\u89e3\u6790\u4e2d<\/h4>\n
1\u3001\u5f97\u5230\u7684\u5730\u5740\u662f\uff1ahttp:\/\/ip\/port\/\u5de5\u7a0b\u8def\u5f84<\/a><\/p>\n
2\u3001<\/p>\n
\"image-20230410225817224\"<\/div><\/p>\n
3\u3001\u7279\u6b8a\u60c5\u51b5\uff1aresponse.sendRediect("\/");   \u628a\u659c\u6760\u53d1\u9001\u7ed9\u6d4f\u89c8\u5668\u89e3\u6790\u3002\u5f97\u5230\u7684http:\/\/ip:port\/<\/p>\n
6\u3001HTTPServletResponse\u7c7b<\/h2>\n
6.1\u3001HTTPServletResponse\u7c7b\u7684\u4f5c\u7528<\/h3>\n
1\u3001HttpServletResponse\u7c7b\u548cHttpServletResquest\u7c7b\u4e00\u6837\uff0c\u6bcf\u6b21\u8bf7\u6c42\u8fdb\u6765\uff0cTomcat\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2aResponse\u5bf9\u8c61\u4f20\u9012\u7ed9Servlet\u7a0b\u5e8f\u53bb\u4f7f\u7528\u3002HttpServletResquest\u8868\u793a\u8bf7\u6c42\u8fc7\u6765\u7684\u4fe1\u606f\uff0cHttpS\u800cvletResquest\u8868\u793a\u6240\u6709\u54cd\u5e94\u7684\u4fe1\u606f\u3002<\/p>\n
2\u3001\u5982\u679c\u6211\u4eec\u9700\u8981\u8bbe\u7f6e\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7684\u4fe1\u606f\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7HTTPServletResponse\u5bf9\u8c61\u6765\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n
6.2\u3001\u4e24\u4e2a\u8f93\u51fa\u6d41\u8bf4\u660e<\/h3>\n
1\u3001\u5185\u5bb9<\/h4>\n
\"image-20230410232634544\"<\/div><\/p>\n
2\u3001\u6ce8\u610f<\/h4>\n
1\u3001\u4e24\u4e2a\u6d41\u540c\u65f6\u53ea\u80fd\u4f7f\u7528\u4e00\u4e2a<\/p>\n
2\u3001\u4f7f\u7528\u4e86\u5b57\u8282\u6d41\uff0c\u5c31\u4e0d\u80fd\u518d\u4f7f\u7528\u5b57\u7b26\u6d41\uff0c\u53cd\u4e4b\u4ea6\u7136\uff0c\u5426\u5219\u5c31\u4f1a\u62a5\u9519<\/p>\n
6.3\u3001\u5982\u4f55\u5f80\u5ba2\u6237\u7aef\u56de\u4f20\u6570\u636e<\/h3>\n
1\u3001\u4f8b\u5b50<\/h4>\n
\"image-20230411001550121\"<\/div><\/p>\n
6.4\u3001\u54cd\u5e94\u7684\u4e71\u7801\u89e3\u51b3<\/h3>\n
1\u3001\u65b9\u5f0f\u4e00(\u4e0d\u63a8\u8350\u4f7f\u7528)<\/h4>\n
1\u3001\u8bbe\u7f6e\u670d\u52a1\u5668\u5b57\u7b26\u96c6\u4e3aUTF-8<\/p>\n
2\u3001\u901a\u8fc7\u54cd\u5e94\u5934\uff0c\u8bbe\u7f6e\u6d4f\u89c8\u5668\u4e5f\u4f7f\u7528UTF-8<\/p>\n
3\u3001\u4f8b\u5b50<\/p>\n
\"image-20230411001649734\"<\/div><\/p>\n
2\u3001\u65b9\u5f0f\u4e8c(\u63a8\u8350\u4f7f\u7528)<\/h4>\n
1\u3001\u540c\u65f6\u8bbe\u7f6e\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7684\u5b57\u7b26\u96c6\uff0c\u8fd8\u8bbe\u7f6e\u4e86\u54cd\u5e94\u5934<\/p>\n
2\u3001\u8be5\u65b9\u6cd5\u4e5f\u5fc5\u987b\u5728\u83b7\u53d6\u6d41\u5bf9\u8c61\u4e4b\u524d\u4f7f\u7528<\/p>\n
3\u3001\u4f8b\u5b50<\/p>\n
\"image-20230411001744845\"<\/div><\/p>\n
6.5\u3001\u8bf7\u6c42\u91cd\u5b9a\u5411<\/h3>\n
1\u3001\u4ec0\u4e48\u662f\u91cd\u5b9a\u5411<\/h4>\n
1\u3001\u8bf7\u6c42\u91cd\u5b9a\u5411\uff0c\u662f\u6307\u5ba2\u6237\u7aef\u7ed9\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\uff0c\u670d\u52a1\u5668\u63a5\u6536\u5230\u8bf7\u6c42\u540e\uff0c\u5728\u7ed9\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u4e2a\u5730\u5740\uff0c\u5ba2\u6237\u7aef\u53bb\u91cd\u65b0\u8bbf\u95ee\u5730\u5740\u3002\u53eb\u91cd\u5b9a\u5411\uff08\u56e0\u4e3a\u5ba2\u6237\u7aef\u7b2c\u4e00\u6b21\u8bbf\u95ee\u7684\u5730\u5740\u53ef\u80fd\u5e9f\u5f03\u4e86 \uff09<\/p>\n
2\u3001\u91cd\u5b9a\u5411\u56fe\u89e3<\/h4>\n
\"image-20230411001945338\"<\/div><\/p>\n
3\u3001\u91cd\u5b9a\u5411\u7684\u7279\u70b9<\/h4>\n
1\u3001\u6d4f\u89c8\u5668\u5730\u5740\u680f\u4f1a\u53d1\u751f\u53d8\u5316<\/p>\n
2\u3001\u4e24\u6b21\u8bf7\u6c42<\/p>\n
3\u3001\u4e0d\u5171\u4eabRequest\u57df\u4e2d\u7684\u6570\u636e<\/p>\n
4\u3001\u4e0d\u80fd\u8bbf\u95eeWEB-INF\u4e0b\u7684\u8d44\u6e90<\/p>\n
5\u3001\u53ef\u4ee5\u8bbf\u95ee\u5de5\u7a0b\u4ee5\u5916\u7684\u8d44\u6e90<\/p>\n
4\u3001\u91cd\u5b9a\u5411\u65b9\u6cd5\u4e00<\/h4>\n
1\u3001\u6b65\u9aa4<\/p>\n
\uff081\uff09\u8bbe\u7f6e\u54cd\u5e94\u72b6\u6001\u7801<\/p>\n
\uff082\uff09\u8bbe\u7f6e\u54cd\u5e94\u5934\uff0c\u8bf4\u660e\u65b0\u7684\u5730\u5740\u5728\u54ea<\/p>\n
2\u3001\u4f8b\u5b50<\/p>\n
\"image-20230411002137749\"<\/div><\/p>\n
5\u3001\u91cd\u5b9a\u5411\u65b9\u6cd5\u4e8c\uff08\u63a8\u8350\u4f7f\u7528\uff09<\/h4>\n
1\u3001\u4f7f\u7528sendRedirect\u65b9\u6cd5<\/p>\n
2\u3001\u4f8b\u5b50<\/p>\n
\"image-20230411002209111\"<\/div><\/p>\n
7\u3001JavaEE\u9879\u76ee\u7684\u4e09\u5c42\u67b6\u6784<\/h2>\n
7.1\u3001\u56fe\u793a<\/h3>\n
1\u3001\u5185\u5bb9<\/p>\n
\"image-20230412231645559\"<\/div><\/p>\n
2\u3001\u5206\u5c42<\/p>\n
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