Redis简单实例

矫情吗；* 2021-09-19 11:14 411阅读 0赞

参考文章[Spring Boot缓存注解@Cacheable、@CacheEvict、@CachePut使用][Spring Boot_Cacheable_CacheEvict_CachePut]

项目结构

![20190517145523153.png][]

下面直接上代码

1.pom.xml

<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>

2.RedisConfig

package com.zpc.timor.redis2.config;
    
    import org.springframework.cache.annotation.CachingConfigurerSupport;
    import org.springframework.cache.annotation.EnableCaching;
    import org.springframework.cache.interceptor.KeyGenerator;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import java.lang.reflect.Method;
    
    /**
     * @Author timor
     * @Date 2019/5/16
     */
    @Configuration
    @EnableCaching
    public class RedisConfig extends CachingConfigurerSupport {
    
        /**
         * 用来设置key的值，eg：user-key2::com.zpc.timor.redis2.web.UserControllergetUser
         * @return
         */
        @Bean
        public KeyGenerator keyGenerator() {
            return new KeyGenerator() {
                @Override
                public Object generate(Object target, Method method, Object... params) {
                    StringBuilder sb = new StringBuilder();
                    sb.append(target.getClass().getName());
                    sb.append("-");
                    sb.append(method.getName());
                    for (Object obj : params) {
                        sb.append(obj.toString());
                    }
                    return sb.toString();
                }
            };
        }
    }

#redis
    spring.redis.hostName=127.0.0.1
    spring.redis.port=6379
    
    spring.redis.database=0
    spring.redis.password=
    spring.redis.lettuce.pool.max-active=8
    spring.redis.lettuce.pool.max-wait=-1
    spring.redis.lettuce.pool.max-idle=8
    spring.redis.lettuce.pool.min-idle=0
    spring.redis.timeout=3000ms

package com.zpc.timor.redis2.web;
    
    import com.zpc.timor.redis2.model.User;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.cache.annotation.Cacheable;
    import org.springframework.data.redis.core.StringRedisTemplate;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import javax.servlet.http.HttpSession;
    import java.util.UUID;
    import java.util.concurrent.TimeUnit;
    
    /**
     * @Author timor
     * @Date 2019/5/16
     */
    @RestController
    //@Controller
    public class UserController {
    
        @Autowired
        private StringRedisTemplate  redisTemplate;
    
        /**
         * Cacheable后面的value是存入redis的文件夹名称，keyGenerator会根据配置生成key的值，不配置的时候是这样：user-key2::SimpleKey []
         * @return
         */
        @RequestMapping("/getUser")
        @Cacheable(value="user-key2")
        public User getUser() {
            User user=new User("aa@126.com", "aa", "aa123456", "aa","123");
            System.out.println("若下面没出现“无缓存的时候调用”字样且能打印出数据表示测试成功");
    
            redisTemplate.opsForValue().set("timor","i am timor",30,TimeUnit.SECONDS);
            return user;
        }
    
    
        @RequestMapping("/uid")
        String uid(HttpSession session) {
            UUID uid = (UUID) session.getAttribute("uid");
            if (uid == null) {
                uid = UUID.randomUUID();
            }
            session.setAttribute("uid", uid);
            return session.getId();
        }
    
    
        /**
         * 设置Redis
         * @return
         */
        @RequestMapping("/setRedisValue")
        public String setRedisValue(){
            int i = 1;
    //        for (int i = 0;i < 300;i++){
                redisTemplate.opsForValue().set("timor"+i,"i am timor "+i,30,TimeUnit.SECONDS);
    //        }
            return "success";
        }
    
        /**
         * 获取Redis
         * @return
         */
        @RequestMapping("/getRedisValue")
        public String getRedisValue(){
            String value = redisTemplate.opsForValue().get("timor1");
            return value;
        }
    }

package com.zpc.timor.redis2.config;
    
    import org.springframework.context.annotation.Configuration;
    import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
    
    /**
     * @Author timor
     * @Date 2019/5/16
     */
    @Configuration
    @EnableRedisHttpSession(maxInactiveIntervalInSeconds = 86400*30)
    public class SessionConfig {
    }

package com.zpc.timor.redis2.model;
    
    import java.io.Serializable;
    
    /**
     * @Author timor
     * @Date 2019/5/16
     */
    public class User implements Serializable {
    
        private static final long serialVersionUID = 1L;
        private Long id;
        private String userName;
        private String password;
        private String email;
        private String nickname;
        private String regTime;
    
    
        public User() {
            super();
        }
        public User(String email, String nickname, String password, String userName, String regTime) {
            super();
            this.email = email;
            this.nickname = nickname;
            this.password = password;
            this.userName = userName;
            this.regTime = regTime;
        }
    
        @Override
        public String toString() {
            return "User{" +
                    "id=" + id +
                    ", userName='" + userName + '\'' +
                    ", password='" + password + '\'' +
                    ", email='" + email + '\'' +
                    ", nickname='" + nickname + '\'' +
                    ", regTime='" + regTime + '\'' +
                    '}';
        }
    
        public Long getId() {
            return id;
        }
    
        public void setId(Long id) {
            this.id = id;
        }
    
        public String getUserName() {
            return userName;
        }
    
        public void setUserName(String userName) {
            this.userName = userName;
        }
    
        public String getPassword() {
            return password;
        }
    
        public void setPassword(String password) {
            this.password = password;
        }
    
        public String getEmail() {
            return email;
        }
    
        public void setEmail(String email) {
            this.email = email;
        }
    
        public String getNickname() {
            return nickname;
        }
    
        public void setNickname(String nickname) {
            this.nickname = nickname;
        }
    
        public String getRegTime() {
            return regTime;
        }
    
        public void setRegTime(String regTime) {
            this.regTime = regTime;
        }
    }

[Spring Boot_Cacheable_CacheEvict_CachePut]: https://blog.csdn.net/dreamhai/article/details/80642010
[20190517145523153.png]: /images/20210716/dabd5705eebf4bdca1dd0f118e146537.png