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cicadasmile
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JavaEE基础(04)：会话跟踪，Session和Cookie详解
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‎README.md‎

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@@ -18,11 +18,12 @@ Java基础类型，容器，并发，IO流，面向对象，Web编程等代码
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|项目名称|GitHub地址|GitEE地址|推荐指数|
2020
|:---|:---|:---|:---|
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|Java描述常用设计模式,算法,数据结构|[GitHub·点这里](https://github.com/cicadasmile/model-arithmetic-parent)|[GitEE·点这里](https://gitee.com/cicadasmile/model-arithmetic-parent)|☆☆☆☆☆|
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|Java基础、进阶、并发、面向对象、Web开发|[GitHub·点这里](https://github.com/cicadasmile/java-base-parent)|[GitEE·点这里](https://gitee.com/cicadasmile/java-base-parent)|☆☆☆☆|
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|SpringCloud微服务架构实战综合案例|[GitHub·点这里](https://github.com/cicadasmile/husky-spring-cloud)|[GitEE·点这里](https://gitee.com/cicadasmile/husky-spring-cloud)|☆☆☆☆☆|
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|SpringCloud微服务基础组件案例详解|[GitHub·点这里](https://github.com/cicadasmile/spring-cloud-base)|[GitEE·点这里](https://gitee.com/cicadasmile/spring-cloud-base)|☆☆☆|
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|SpringCloud实现分库分表模式下数据库实时扩容|[GitHub·点这里](https://github.com/cicadasmile/cloud-shard-jdbc)|[GitEE·点这里](https://gitee.com/cicadasmile/cloud-shard-jdbc)|☆☆☆☆☆|
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|SpringBoot框架基础应用入门到进阶|[GitHub·点这里](https://github.com/cicadasmile/spring-boot-base)|[GitEE·点这里](https://gitee.com/cicadasmile/spring-boot-base)|☆☆☆☆|
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|SpringBoot框架整合开发常用中间件|[GitHub·点这里](https://github.com/cicadasmile/middle-ware-parent)|[GitEE·点这里](https://gitee.com/cicadasmile/middle-ware-parent)|☆☆☆☆☆|
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|Spring+Mvc框架基础案例详解|[GitHub·点这里](https://github.com/cicadasmile/spring-mvc-parent)|[GitEE·点这里](https://gitee.com/cicadasmile/spring-mvc-parent)|☆☆|
27-
|Java描述常用设计模式,算法,数据结构|[GitHub·点这里](https://github.com/cicadasmile/model-arithmetic-parent)|[GitEE·点这里](https://gitee.com/cicadasmile/model-arithmetic-parent)|☆☆☆☆☆|
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|Linux系统基础、运维,常用操作积累|[GitHub·点这里](https://github.com/cicadasmile/linux-system-base)|[GitEE·点这里](https://gitee.com/cicadasmile/linux-system-base)|☆☆☆|

‎java-ee-base-parent/node04-servlet-session/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>java-ee-base-parent</artifactId>
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<groupId>com.java.ee.parent</groupId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.node04.session</groupId>
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<artifactId>node04-servlet-session</artifactId>
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<packaging>war</packaging>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.8</maven.compiler.source>
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<maven.compiler.target>1.8</maven.compiler.target>
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<jstl.version>1.2</jstl.version>
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<servlet-api.version>2.5</servlet-api.version>
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<jsp-api.version>2.0</jsp-api.version>
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</properties>
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<dependencies>
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<!-- JSP相关 依赖包-->
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<dependency>
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<groupId>jstl</groupId>
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<artifactId>jstl</artifactId>
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<version>${jstl.version}</version>
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</dependency>
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>jsp-api</artifactId>
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<version>${jsp-api.version}</version>
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<scope>provided</scope>
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</dependency>
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<!-- servlet依赖包 -->
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<dependency>
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<groupId>javax.servlet</groupId>
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<artifactId>servlet-api</artifactId>
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<version>${servlet-api.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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</dependency>
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</dependencies>
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</project>

‎java-ee-base-parent/node04-servlet-session/src/main/java/com/node04/servlet/impl/CookieServletOne.java‎

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package com.node04.servlet.impl;
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import javax.servlet.ServletException;
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import javax.servlet.http.Cookie;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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public class CookieServletOne extends HttpServlet {
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@Override
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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response.setContentType("text/html;charset=utf-8");
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// 创建Cookie
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Cookie cookie = new Cookie("author","cicada");
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// 设置生命周期 1小时
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cookie.setMaxAge(60*60);
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response.addCookie(cookie) ;
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response.getWriter().print("Hello:Cookie");
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}
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@Override
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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System.out.println("doPost...");
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Cookie[] cookies = request.getCookies() ;
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for (Cookie cookie:cookies){
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System.out.println("Name："+cookie.getName());
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System.out.println("Value："+cookie.getValue());
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}
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response.setContentType("text/html;charset=utf-8");
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String userName = request.getParameter("userName") ;
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response.getWriter().print("Hello:"+userName);
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}
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}

‎java-ee-base-parent/node04-servlet-session/src/main/java/com/node04/servlet/impl/CookieServletTwo.java‎

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package com.node04.servlet.impl;
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import javax.servlet.ServletException;
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import javax.servlet.http.Cookie;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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public class CookieServletTwo extends HttpServlet {
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@Override
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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response.setContentType("text/html;charset=utf-8");
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// 创建Cookie
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Cookie cookie = new Cookie("author","smile");
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// 设置生命周期 2小时
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cookie.setMaxAge(60*60*2);
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response.addCookie(cookie) ;
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response.getWriter().print("Hello:Cookie");
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}
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@Override
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protected void doPost(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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response.setContentType("text/html;charset=utf-8");
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Cookie[] cookies = request.getCookies() ;
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for (Cookie cookie:cookies){
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if (cookie.getName().equals("author")){
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cookie.setMaxAge(0);
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response.addCookie(cookie);
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}
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}
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String userName = request.getParameter("userName") ;
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response.getWriter().print("Hello:"+userName);
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}
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}

‎java-ee-base-parent/node04-servlet-session/src/main/java/com/node04/servlet/impl/SessionServletOne.java‎

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package com.node04.servlet.impl;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import java.io.IOException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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public class SessionServletOne extends HttpServlet {
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@Override
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protected void doGet(HttpServletRequest request, HttpServletResponse response)
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throws ServletException, IOException {
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response.setContentType("text/html;charset=utf-8");
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SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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HttpSession session = request.getSession(true) ;
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Date createTime = new Date(session.getCreationTime());
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Date lastAccessTime = new Date(session.getLastAccessedTime());
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session.setAttribute("author","cicada");
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response.getWriter().print(
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"SessionId：" + session.getId() + "<br/>"+
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"User Author：" + session.getAttribute("author")+"<br/>"+
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"Create Time：" + dateFormat.format(createTime)+"<br/>"+
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"Last Access Time："+dateFormat.format(lastAccessTime));
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}
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}

‎java-ee-base-parent/node04-servlet-session/src/main/webapp/WEB-INF/web.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns="http://java.sun.com/xml/ns/javaee"
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xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
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id="WebApp_ID" version="3.0">
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<display-name>cicada_servlet</display-name>
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<context-param>
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<param-name>encoding</param-name>
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<param-value>UTF-8</param-value>
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</context-param>
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<servlet>
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<servlet-name>cookieServletOne</servlet-name>
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<servlet-class>com.node04.servlet.impl.CookieServletOne</servlet-class>
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</servlet>
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<servlet-mapping>
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<servlet-name>cookieServletOne</servlet-name>
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<url-pattern>/cookieServletOne</url-pattern>
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</servlet-mapping>
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<servlet>
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<servlet-name>cookieServletTwo</servlet-name>
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<servlet-class>com.node04.servlet.impl.CookieServletTwo</servlet-class>
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</servlet>
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<servlet-mapping>
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<servlet-name>cookieServletTwo</servlet-name>
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<url-pattern>/cookieServletTwo</url-pattern>
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</servlet-mapping>
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<servlet>
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<servlet-name>sessionServletOne</servlet-name>
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<servlet-class>com.node04.servlet.impl.SessionServletOne</servlet-class>
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</servlet>
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<servlet-mapping>
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<servlet-name>sessionServletOne</servlet-name>
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<url-pattern>/sessionServletOne</url-pattern>
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</servlet-mapping>
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</web-app>

‎java-ee-base-parent/node04-servlet-session/src/main/webapp/index.jsp‎

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<html>
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<body>
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<hr/>
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<h2>Session</h2>
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<hr/>
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</body>
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</html>

‎java-ee-base-parent/node04-servlet-session/src/main/webapp/request.jsp‎

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<html>
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<head>
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<title>index.html</title>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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</head>
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<body>
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<hr/>
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<h2>CREATE Cookie</h2>
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<form method="GET" action="/cookieServletOne">
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userName:<input type="text" name="userName"/>
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<input type="submit" value="SUBMIT"/>
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</form>
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<hr/>
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<h2>GET Cookie</h2>
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<form method="POST" action="/cookieServletOne">
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userName:<input type="text" name="userName"/>
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<input type="submit" value="SUBMIT"/>
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</form>
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<hr/>
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<h2>UPDATE Cookie</h2>
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<form method="GET" action="/cookieServletTwo">
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userName:<input type="text" name="userName"/>
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<input type="submit" value="SUBMIT"/>
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</form>
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<hr/>
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<h2>DELETE Cookie</h2>
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<form method="POST" action="/cookieServletTwo">
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userName:<input type="text" name="userName"/>
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<input type="submit" value="SUBMIT"/>
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</form>
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</body>
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</html>

‎java-ee-base-parent/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>java-base-parent</artifactId>
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<groupId>com.java.parent</groupId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.java.ee.parent</groupId>
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<artifactId>java-ee-base-parent</artifactId>
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<packaging>pom</packaging>
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<modules>
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<module>node01-servlet-life</module>
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<module>node02-servlet-api</module>
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<module>node03-servlet-http</module>
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<module>node04-servlet-session</module>
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</modules>
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</project>

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