Spring Boot入门系列之：九、Spring Boot整合Redis

￡神魔★判官ぃ 2022-04-23 01:58 190阅读 0赞

# Spring Boot Redis #

## 开发环境 ##

开发工具： Intellij IDEA 2018.2.6

springboot: 2.0.7.RELEASE

jdk： 1.8.0\_192

maven: 3.6.0

redis: 4.0.12

## redis 简介 ##

**什么是 redis ？**

Redis 是一个开源（BSD许可）的，内存中的数据结构存储系统，它可以用作数据库、缓存和消息中间件。 它支持多种类型的数据结构，如 字符串（strings）， 散列（hashes）， 列表（lists）， 集合（sets）， 有序集合（sorted sets） 与范围查询， bitmaps， hyperloglogs 和 地理空间（geospatial） 索引半径查询。 Redis 内置了 复制（replication），LUA脚本（Lua scripting）， LRU驱动事件（LRU eviction），事务（transactions） 和不同级别的 磁盘持久化（persistence）， 并通过 Redis哨兵（Sentinel）和自动 分区（Cluster）提供高可用性（high availability）。

## 搭建项目 ##

*  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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    
        <groupId>com.andy</groupId>
        <artifactId>spring-boot-redis</artifactId>
        <version>1.0.7.RELEASE</version>
        <modelVersion>4.0.0</modelVersion>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>io.spring.platform</groupId>
                    <artifactId>platform-bom</artifactId>
                    <version>Cairo-SR6</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <dependencies>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-redis</artifactId>
            </dependency>
    
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.7.0</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>UTF-8</encoding>
                    </configuration>
                </plugin>
    
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <version>2.0.6.RELEASE</version>
                    <configuration>
                        
                        <layout>ZIP</layout>
                    </configuration>
                    <executions>
                        <execution>
                            <goals>
                                <goal>repackage</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
        </build>
    
    </project>

*  application.yml

server:
      port: 8081
      servlet:
        context-path: /
    
    spring:
      application:
        name: spring-redis
      redis:
        # 数据库索引
        database: 3
        # 连接超时时间
        timeout: 10000ms
        # ip地址
        host: 127.0.0.1
        # 端口
        port: 6379
        # 密码
        # password:
        jedis:
          pool:
            # 最大连接数
            max-active: 8
            # 最大阻塞等待时间(负数表示没限制)
            max-wait: -1ms
            # 最大空闲
            max-idle: 8
            # 最小空闲
            min-idle: 0

*  启动类

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cache.annotation.EnableCaching;
    
    /**
     * @author Leone
     * @since 2018-05-11
     **/
    @EnableCaching
    @SpringBootApplication
    public class RedisApplication {
        public static void main(String[] args) {
            SpringApplication.run(RedisApplication.class, args);
        }
    }

*  RedisConfig.java

import com.fasterxml.jackson.annotation.JsonAutoDetect;
    import com.fasterxml.jackson.annotation.PropertyAccessor;
    import com.fasterxml.jackson.databind.ObjectMapper;
    import org.springframework.cache.CacheManager;
    import org.springframework.cache.annotation.CachingConfigurerSupport;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.data.redis.cache.RedisCacheConfiguration;
    import org.springframework.data.redis.cache.RedisCacheManager;
    import org.springframework.data.redis.connection.RedisConnectionFactory;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
    import org.springframework.data.redis.serializer.RedisSerializer;
    import org.springframework.data.redis.serializer.StringRedisSerializer;
    
    import java.time.Duration;
    import java.util.HashMap;
    import java.util.HashSet;
    import java.util.Map;
    import java.util.Set;
    
    /**
     * <p> redis配置
     *
     * @author Leone
     * @since 2018-07-19
     **/
    @Configuration
    public class RedisConfig extends CachingConfigurerSupport {
    
    
        @Bean
        public CacheManager cacheManager(RedisConnectionFactory factory) {
            // 生成一个默认配置，通过config对象即可对缓存进行自定义配置
            RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
            // 设置缓存的默认过期时间，也是使用Duration设置
            config = config.entryTtl(Duration.ofMinutes(1))
                    // 不缓存空值
                    .disableCachingNullValues();
    
            // 设置一个初始化的缓存空间set集合
            Set<String> cacheNames = new HashSet<>();
            cacheNames.add("my-redis-cache1");
            cacheNames.add("my-redis-cache2");
    
            // 对每个缓存空间应用不同的配置
            Map<String, RedisCacheConfiguration> configMap = new HashMap<>();
            configMap.put("my-redis-cache1", config);
            configMap.put("my-redis-cache2", config.entryTtl(Duration.ofSeconds(120)));
    
            // 使用自定义的缓存配置初始化一个cacheManager
            return RedisCacheManager.builder(factory)
                    // 注意这两句的调用顺序，一定要先调用该方法设置初始化的缓存名，再初始化相关的配置
                    .initialCacheNames(cacheNames)
                    .withInitialCacheConfigurations(configMap)
                    .build();
        }
    
        /**
         * 设置 redis 入库 各种类型 k v 序列化
         *
         * @param redisConnectionFactory
         * @return
         */
        @Bean
        public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
    //        RedisSerializer<String> stringSerializer = new StringRedisSerializer();
    
            Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
    
            ObjectMapper objectMapper = new ObjectMapper();
    
            objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
            objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
    
            jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
    
            RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
            redisTemplate.setConnectionFactory(redisConnectionFactory);
            redisTemplate.setKeySerializer(jackson2JsonRedisSerializer);
            redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
            redisTemplate.setHashKeySerializer(jackson2JsonRedisSerializer);
            redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
            redisTemplate.afterPropertiesSet();
            return redisTemplate;
        }
    
    }

*  User.java

import java.io.Serializable;
    import java.util.Date;
    
    /**
     * <p>
     *
     * @author Leone
     * @since 2018-03-02
     **/
    public class User implements Serializable {
    
        private Long userId;
    
        private String account;
    
        private String password;
    
        private String description;
    
        private Integer age;
    
        private Date createTime;
    
        private boolean deleted;
    
        public User() {
        }
    
        public User(Long userId, String account, String password, String description, Integer age, Date createTime, Boolean deleted) {
            this.userId = userId;
            this.account = account;
            this.password = password;
            this.description = description;
            this.age = age;
            this.createTime = createTime;
            this.deleted = deleted;
        }
    
        public Long getUserId() {
            return userId;
        }
    
        public void setUserId(Long userId) {
            this.userId = userId;
        }
    
        public String getAccount() {
            return account;
        }
    
        public void setAccount(String account) {
            this.account = account;
        }
    
        public String getPassword() {
            return password;
        }
    
        public void setPassword(String password) {
            this.password = password;
        }
    
        public String getDescription() {
            return description;
        }
    
        public void setDescription(String description) {
            this.description = description;
        }
    
        public Integer getAge() {
            return age;
        }
    
        public void setAge(Integer age) {
            this.age = age;
        }
    
        public Date getCreateTime() {
            return createTime;
        }
    
        public void setCreateTime(Date createTime) {
            this.createTime = createTime;
        }
    
        public boolean isDeleted() {
            return deleted;
        }
    
        public void setDeleted(boolean deleted) {
            this.deleted = deleted;
        }
    }

*  RedisPrefix.java

/**
     * redis 前缀生成器
     *
     * @author Leone
     * @since 2018-07-08
     **/
    public class RedisPrefix {
    
        public static String userCatch(String uuid) {
            return "app.user:" + uuid;
        }
    
    }

*  RedisController.java

import com.andy.redis.service.RedisCacheService;
    import com.andy.redis.service.RedisService;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import javax.annotation.Resource;
    
    /**
     * @author Leone
     * @since 2018-07-08
     **/
    @RestController
    @RequestMapping("/api/redis")
    public class RedisController {
    
        @Resource
        private RedisService redisService;
    
        @Resource
        private RedisCacheService redisCacheService;
    
        @GetMapping("/list")
        public String list() {
            return "list: " + redisService.list() + " !";
        }
    
        @GetMapping("/value")
        public String value() {
            return "value: " + redisService.value() + " !";
        }
    
        @GetMapping("/set")
        public String set() {
            return "set " + redisService.set() + " !";
        }
    
    
        @GetMapping("/zSet")
        public String zSet() {
            return "zSet " + redisService.zSet() + " !";
        }
    
        @GetMapping("/hash")
        public String hash() {
            return "hash " + redisService.hash() + " !";
        }
    
    
        @GetMapping("/catch")
        public String userCatch() {
            return redisCacheService.userCatch();
        }
    
    }

*  RedisService.java

import com.andy.redis.config.RedisPrefix;
    import com.andy.redis.util.EntityFactory;
    import com.andy.redis.util.RandomUtil;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.data.redis.connection.RedisZSetCommands;
    import org.springframework.data.redis.core.*;
    import org.springframework.stereotype.Service;
    
    import javax.annotation.Resource;
    import java.util.*;
    import java.util.concurrent.TimeUnit;
    
    /**
     * <p>
     *
     * @author Leone
     * @since 2018-08-11
     **/
    @Slf4j
    @Service
    public class RedisService {
    
        @Resource
        private RedisTemplate<String, Object> redisTemplate;
    
        /**
         * 相当于队列操作
         *
         * @return
         */
        public long list() {
            log.info("list:{}", 1);
            for (int i = 0; i < 10; i++) {
                String key = RedisPrefix.userCatch("list"), value = RandomUtil.getName();
                Long push = redisTemplate.opsForList().leftPush(key, value);
                log.info("leftPush key:[{}] -- value:[{}]", key, value);
            }
    
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
    
            for (int i = 0; i < 9; i++) {
                Object result = redisTemplate.opsForList().rightPop(RedisPrefix.userCatch("list"));
                log.info("leftPop key:[{}] -- value:[{}]", i, result);
            }
    
            return 1;
        }
    
        /**
         * set 普通 字符串或对象 类型数据
         *
         * @return
         */
        public long value() {
            log.info("value:{}", 1);
            redisTemplate.opsForValue().set(RedisPrefix.userCatch(RandomUtil.getNum(6)), EntityFactory.getUser(), 120, TimeUnit.SECONDS);
            return 1;
        }
    
    
        /**
         * set 操作
         *
         * @return
         */
        public long set() {
            log.info("set:{}", 1);
            // set值
            Long add = redisTemplate.opsForSet().add("key1", "dd", "bb", "ee", "aa");
    
            // 获取值
            Set<Object> resultSet = redisTemplate.opsForSet().members("key1");
    
            // 获取变量中值的长度
            Long size = redisTemplate.opsForSet().size("key1");
    
            // 随机获取变量中的元素
            Object randomVal = redisTemplate.opsForSet().randomMember("key1");
    
            // 随机获取变量中指定个数的元素
            List<Object> randomValues = redisTemplate.opsForSet().randomMembers("key1", 3);
    
            //  检查给定的元素是否在变量中
            Boolean isMember = redisTemplate.opsForSet().isMember("key1", "ff");
    
            // 转移变量的元素值到目的变量
            //Boolean move = redisTemplate.opsForSet().move("key1", "aa", "ee");
    
            // 弹出变量中的元素
            //List<Object> key1 = redisTemplate.opsForSet().pop("key1", 1);
    
            // 批量移除变量中的元素。
            //Long remove = redisTemplate.opsForSet().remove("key1", "aa", "bb");
    
            // 匹配获取键值对，ScanOptions.NONE为获取全部键值对；ScanOptions.scanOptions().match("C").build()匹配获取键位map1的键值对,不能模糊匹配。
            /*Cursor<Object> cursor = redisTemplate.opsForSet().scan("setValue", ScanOptions.scanOptions().match("c").build());
            while (cursor.hasNext()){
                Object object = cursor.next();
                System.out.println("通过scan(K key, ScanOptions options)方法获取匹配的值:" + object);
            }*/
    
            log.info("size: {} randomVal: {} randomValues: {} resultSet: {} isMember: {}", size, randomVal, randomValues, resultSet, isMember);
            return 1;
        }
    
    
        public long zSet() {
            log.info("zSet:{}", 1);
            redisTemplate.opsForZSet().add(RedisPrefix.userCatch(RandomUtil.getNum(6)), EntityFactory.getUser(), 3);
    
            redisTemplate.opsForZSet().add("zSetValue", "A", 1);
            redisTemplate.opsForZSet().add("zSetValue", "B", 3);
            redisTemplate.opsForZSet().add("zSetValue", "C", 2);
            redisTemplate.opsForZSet().add("zSetValue", "D", 5);
    
            // 获取指定区间的元素
            Set zSetValue = redisTemplate.opsForZSet().range("zSetValue", 0, -1);
            log.info("range: {}", zSetValue);
    
    
            // 用于获取满足非score的排序取值。这个排序只有在有相同分数的情况下才能使用，如果有不同的分数则返回值不确定。
            RedisZSetCommands.Range range = new RedisZSetCommands.Range();
            // range.gt("A");
            range.lt("D");
            zSetValue = redisTemplate.opsForZSet().rangeByLex("zSetValue", range);
            log.info("rangeByLex: {}", zSetValue);
    
            // 通过TypedTuple方式新增数据
            ZSetOperations.TypedTuple<Object> typedTuple1 = new DefaultTypedTuple<>("E", 6.0);
            ZSetOperations.TypedTuple<Object> typedTuple2 = new DefaultTypedTuple<>("F", 7.0);
            ZSetOperations.TypedTuple<Object> typedTuple3 = new DefaultTypedTuple<>("G", 5.0);
            Set<ZSetOperations.TypedTuple<Object>> typedTupleSet = new HashSet<>();
    
            typedTupleSet.add(typedTuple1);
            typedTupleSet.add(typedTuple2);
            typedTupleSet.add(typedTuple3);
            redisTemplate.opsForZSet().add("typedTupleSet", typedTupleSet);
            zSetValue = redisTemplate.opsForZSet().range("typedTupleSet", 0, -1);
            log.info("添加元素:{}", zSetValue);
    
            long count = redisTemplate.opsForZSet().count("zSetValue", 1, 5);
            log.info("获取区间值的个数:{}", count);
    
            return 1;
        }
    
        /**
         * @return
         */
        public long hash() {
            log.info("hash:{}", 1);
            // put() 添加
            redisTemplate.opsForHash().put("he1", "key1", EntityFactory.getUser());
            redisTemplate.opsForHash().put("he1", "key2", EntityFactory.getUser());
            redisTemplate.opsForHash().put("he1", "key3", EntityFactory.getUser());
            Map<Object, Object> entries = redisTemplate.opsForHash().entries("he1");
            log.info("put:{}", entries);
    
            // putAll() 批量添加
            Map<String, Object> param = new HashMap<>();
            param.put("key1", EntityFactory.getUser());
            param.put("key2", EntityFactory.getUser());
            param.put("key3", EntityFactory.getUser());
            redisTemplate.opsForHash().putAll("he2", param);
            log.info("putAll:{}", redisTemplate.opsForHash().entries("he2"));
    
            // delete() 删除指定key
            redisTemplate.opsForHash().delete("he3", "key1");
            log.info("delete:{}", redisTemplate.opsForHash().entries("he3"));
    
            // hasKey() 判断某个key是否存在
            log.info("hasKey:{}", redisTemplate.opsForHash().hasKey("he2", "key2"));
    
            // get() 获取值
            log.info("get:{}", redisTemplate.opsForHash().get("he2", "key1"));
    
            // multiGet() 批量获取
            log.info("multiGet:{}", redisTemplate.opsForHash().multiGet("he2", Arrays.asList("key1", "key2")));
    
            // 获取所有key
            log.info("keys:{}", redisTemplate.opsForHash().keys("he2"));
    
            // 获取所有key size
            log.info("size:{}", redisTemplate.opsForHash().size("he2"));
    
            // 获取所有key values
            log.info("values:{}", redisTemplate.opsForHash().values("he2"));
    
            Cursor<Map.Entry<Object, Object>> scan = redisTemplate.opsForHash().scan("he2", ScanOptions.NONE);
            while (scan.hasNext()) {
                Map.Entry<Object, Object> entry = scan.next();
                log.info("key:{} -- value:{}", entry.getKey(), entry.getValue());
            }
    
            return 1;
        }
    }

[传送门][Link 1]

[Link 1]: https://github.com/janlle/spring-boot-examples