配置步骤
步骤1
创建项目
步骤2
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>cn.guangjun.spring.boot2</groupId>
<artifactId>springboot2-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<artifactId>springboot2-session</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot2-session</name>
<description>springboot2-session</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.17</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.22</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.8.4</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.12</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>步骤3
application.yaml
server:
port: 9000
spring:
datasource:
druid:
url: jdbc:mysql://172.17.4.136:3603/springboot2?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=CTT
driver-class-name: com.mysql.cj.jdbc.Driver
username: root
password: P@ssw0rd
initial-size: 2
max-active: 2
min-idle: 1
max-wait: 1000
#preparestatement
pool-prepared-statements: true
max-pool-prepared-statement-per-connection-size: 20
max-open-prepared-statements: 20
validation-query: select 1
validation-query-timeout: 2000
test-on-borrow: false
test-on-return: false
test-while-idle: true
time-between-eviction-runs-millis: 2000
min-evictable-idle-time-millis: 600000
max-evictable-idle-time-millis: 900000
filters: stat,wall,log4j #??????????
filter:
stat:
enabled: true
db-type: mysql
log-slow-sql: false
slow-sql-millis: 2000
wall:
enabled: true
db-type: mysql
config:
delete-allow: false
drop-table-allow: false
aop-patterns: com.alibaba.druid.spring.boot.demo.service.*
web-stat-filter:
# enabled: true #????StatFilter???false
# url-pattern:
# exclusions:
# session-stat-enable:
# session-stat-max-count:
# principal-session-name:
# principal-cookie-name:
# profile-enable:
enabled: true
url-pattern: "/*"
exclusions: "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*"
# StatViewServlet????????Druid Wiki???_StatViewServlet??
stat-view-servlet:
url-pattern: "/druid/*"
# IP???(????????????????)
allow: 127.0.0.1
# IP??? (??????deny???allow)
deny: 192.0.0.1
# ??HTML?????Reset All???
reset-enable: false
# ???
login-username: admin
# ????
login-password: 123456
# ??????????????????
enabled: true
redis:
database: 10
# Redis IP
host: 172.17.4.136
password: Hu@123#!
client-type: jedis
jedis:
pool:
max-active: 50
max-wait: 5
max-idle: 20
min-idle: 5
timeout: 5000
步骤4
@Configuration
//maxInactiveIntervalInSeconds：设置session有效时间 默认1800，单位秒。
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 60*30)
public class HttpSessionConfig {
@Bean
public ServletListenerRegistrationBean servletListenerRegistrationBean(){
ServletListenerRegistrationBean servletListenerRegistrationBean = new ServletListenerRegistrationBean();
servletListenerRegistrationBean.setListener(new OnLineCountListener());
return servletListenerRegistrationBean;
}
}
@WebListener
public class OnLineCountListener implements HttpSessionListener {
private final static Logger LOG = LoggerFactory.getLogger(OnLineCountListener.class);
private AtomicInteger onLineCount = new AtomicInteger(0);
public void sessionCreated(HttpSessionEvent event) {
LOG.info("创建Session");
event.getSession().getServletContext().setAttribute("onLineCount", onLineCount.incrementAndGet());
}
@Override
public void sessionDestroyed(HttpSessionEvent event) {
LOG.info("销毁Session");
event.getSession().getServletContext().setAttribute("onLineCount", onLineCount.decrementAndGet());
}
}@WebListener
public class SessionListener implements HttpSessionListener, HttpSessionAttributeListener {
public static final Logger logger= LoggerFactory.getLogger(SessionListener.class);
@Override
public void attributeAdded(HttpSessionBindingEvent httpSessionBindingEvent) {
logger.info("--attributeAdded--");
HttpSession session=httpSessionBindingEvent.getSession();
logger.info("key----:"+httpSessionBindingEvent.getName());
logger.info("value---:"+httpSessionBindingEvent.getValue());
}
@Override
public void attributeRemoved(HttpSessionBindingEvent httpSessionBindingEvent) {
logger.info("--attributeRemoved--");
}
@Override
public void attributeReplaced(HttpSessionBindingEvent httpSessionBindingEvent) {
logger.info("--attributeReplaced--");
}
@Override
public void sessionCreated(HttpSessionEvent event) {
System.out.println("---sessionCreated----");
logger.info("---sessionCreated----");
HttpSession session = event.getSession();
ServletContext application = session.getServletContext();
// 在application范围由一个HashSet集保存所有的session
HashSet sessions = (HashSet) application.getAttribute("sessions");
if (sessions == null) {
sessions = new HashSet();
application.setAttribute("sessions", sessions);
}
// 新创建的session均添加到HashSet集中
sessions.add(session);
// 可以在别处从application范围中取出sessions集合
// 然后使用sessions.size()获取当前活动的session数，即为“在线人数”
}
@Override
public void sessionDestroyed(HttpSessionEvent event) throws ClassCastException {
logger.info("---sessionDestroyed----");
HttpSession session = event.getSession();
logger.info("deletedSessionId: "+session.getId());
System.out.println(session.getCreationTime());
System.out.println(session.getLastAccessedTime());
ServletContext application = session.getServletContext();
HashSet sessions = (HashSet) application.getAttribute("sessions");
// 销毁的session均从HashSet集中移除
sessions.remove(session);
}
}步骤5
@RestController
public class SessionController {
@RequestMapping("/session1")
public Object session1(@RequestParam("username") String username, HttpServletRequest request, HttpSession session) {
Cookie[] cookies = request.getCookies();
if (cookies != null && cookies.length > 0) {
for (Cookie cookie : cookies) {
if (cookie.getName().contains("JSESSION")) {
System.out.println(cookie.getName() + "=" + cookie.getValue());
}
}
}
Object value = session.getAttribute("username");
if (value == null) {
session.setAttribute("username", "{username: '" + username+ "', age: 28}");
value = session.getAttribute("username");
} else {
System.out.println("用户存在");
}
return "username=" + value;
}
@RequestMapping("/session2")
public Object session2(@RequestParam("username") String username, HttpServletRequest request, HttpSession session) {
session.setAttribute("username",username);
return username;
}
}步骤6
测试
