最专业的企业营销型网站建设价格,石家庄免费做网站,高密网站开发,网站做半透明度的优势安装Redis使用yum命令#xff0c;直接将redis安装到linux服务器#xff1a;yum -y install redis启动redis使用以下命令#xff0c;以后台运行方式启动redis#xff1a;redis -server /etc/redis.conf 操作redis使用以下命令启动redis客户端#xff1a;redis-cli设置…安装Redis使用yum命令直接将redis安装到linux服务器yum -y install redis启动redis使用以下命令以后台运行方式启动redisredis -server /etc/redis.conf 操作redis使用以下命令启动redis客户端redis-cli设置远程连接1. 将 redis 配置文件下载到本地redis 配置文件是 linux 下的 /etc/redis.conf 2. 将 redis.conf 中的 “bind 127.0.0.1”注释掉3. 将 redis.conf 中的“protected-mode yes” 改为“protected-mode no”4. 将修改后的 redis.conf 上传至 liunx 下的 /etc 目录5. 使用命令“redis-cli shutdown”先关闭 redis 服务再使用“redis-server /etc/redis.conf ”启动 redis 服务注意在连接redis终端的之前一定要开放安全组SpringBoot集成Redis1.添加redis依赖或者是在pom.xml文件中配置一下依赖dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-data-redis/artifactId
/dependency2.配置Redis(主要是配置前三个)spring.redis.database0
spring.redis.port6379
spring.redis.host82.157.146.10
spring.redis.lettuce.pool.min-idle5
spring.redis.lettuce.pool.max-idle10
spring.redis.lettuce.pool.max-active8
spring.redis.lettuce.pool.max-wait1ms
spring.redis.lettuce.shutdown-timeout100ms3.操作Redis操作字段package com.example.demo.controller;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;RestController
public class RedisController {Autowiredprivate StringRedisTemplate stringRedisTemplate;/*** 将字符串存贮到redis* param key* param value* return*/RequestMapping(/setredis)public String setRedis(String key,String value){if(StringUtils.hasLength(key) StringUtils.hasLength(value)){//在redis中存储数据stringRedisTemplate.opsForValue().set(key,value);return 设置成功;}else{return 请检查输入的值是否正确;}}/*** 从redis中获取对象* param key* return*/RequestMapping(/getredis)public String getRedis(String key){if(StringUtils.hasLength(key)){//获取redis中的valueString s stringRedisTemplate.opsForValue().get(key);return s;}else{return 获取失败;}}
}
结果操作对象package com.example.demo.model;import lombok.Data;Data
public class User {private int id;private String name;private String password;
}package com.example.demo.controller;import com.example.demo.model.User;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;RestController
public class RedisController {private User user;private final String object_redis_key user_1;Autowiredprivate ObjectMapper objectMapper;Autowiredprivate StringRedisTemplate stringRedisTemplate;/*** 使用双重效验锁来构建一个单例 user 对象*/public User getUser(){if(user null){synchronized (this){if(user null){user new User();user.setId(1);user.setName(韩梅梅);user.setPassword(123);}}}return user;}/*** 讲对象存储到redis中* return*/RequestMapping(/setobj)public String setObj() throws JsonProcessingException {User user getUser();String userStr objectMapper.writeValueAsString(user);stringRedisTemplate.opsForValue().set(object_redis_key,userStr);return 操作成功!;}RequestMapping(/getobj)public User getObj() throws JsonProcessingException {String userStr stringRedisTemplate.opsForValue().get(object_redis_key);User user objectMapper.readValue(userStr, User.class);return user;}
}
结果使用字典的方式来存储redis的优点可以获取单个值节省带宽。缺点是存取写起来程序都比较麻烦。Session的持久化创建项目添加依赖 dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-data-redis/artifactId/dependencydependencygroupIdorg.springframework.session/groupIdartifactIdspring-session-data-redis/artifactId/dependency修改配置spring.session.store-typeredis
server.servlet.session.timeout1800
spring.session.redis.flush-modeon_save
spring.session.redis.namespacespring:session
spring.redis.host82.157.14.10
spring.redis.password
spring.redis.port6379存储和读取代码package com.example.demo.model;import lombok.Data;import java.io.Serializable;Data
public class User implements Serializable {private int id;private String username;private String password;
}
package com.example.demo.controller;import com.example.demo.model.User;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;RestController
public class UserController {private final String user_session_key session_1;RequestMapping(/login)public boolean login(HttpSession session){// ... 省去验证过程User user new User();user.setId(1);user.setUsername(王五);user.setPassword(123);session.setAttribute(user_session_key,user);return true;}RequestMapping(/getsess)public User getSess(HttpServletRequest request){HttpSession session request.getSession(false);if(session ! null){return (User) session.getAttribute(user_session_key);}return null;}
}
上面的操作表示已经将session存储到redis中了这是即使重启程序输入相应的路由也能读取redis中的数据这时如果将redis中的session信息删除掉再去获得session就获取不到了
