SpringBoot 如何实现Session共享

HttpSession，是通过Servlet容器创建并进行管理的，创建成功以后将会保存在内存中，这里将会使用Redis解决session共享的问题。

创建项目

添加pom

添加相关的maven

<?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>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.1.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>demo</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-redis --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> <version>2.3.1.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/io.lettuce/lettuce-core --> <dependency> <groupId>io.lettuce</groupId> <artifactId>lettuce-core</artifactId> <version>6.0.0.M1</version> </dependency> <!-- https://mvnrepository.com/artifact/redis.clients/jedis --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>3.3.0</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.session/spring-session-data-redis --> <dependency> <groupId>org.springframework.session</groupId> <artifactId>spring-session-data-redis</artifactId> <version>2.3.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions><exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId></exclusion> </exclusions> </dependency> </dependencies> <build> <plugins> <plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build></project>

配置redis连接

配置redis连接

spring: redis: database: 0 host: 106.53.115.12 port: 6379 password: 12345678 jedis: pool: max-active: 8 max-idle: 8 max-wait: -1ms min-idle: 0

创建Controller用来执行测试操作

package com.example.demo;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpSession;@RestControllerpublic class HelloController { @PostMapping('/save') public String saveName(String name, HttpSession session){ session.setAttribute('name', name); return '8080'; } @GetMapping('/get') public String getName(HttpSession httpSession){ return httpSession.getAttribute('name').toString(); }}

Nginx 负载均衡

mingming@xiaoming-pc:~$ sudo apt-get install nginx

修改配置文件

upstream sang.com { server 192.168.0.1:8080 weight = 1; server 192.168.0.2:8080 weight = 1;}server { listen 80; server_name localhost; location / {proxy_pass http://sang.com;proxy_redirect default; }}

请求分发

保存数据

获取数据

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