spring boot学习第七篇:通过spring boot使用redis

news2024/11/28 14:41:46

1、pom.xml文件里面增加如下依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

2、yml文件增加如下配置：

  redis:
    host: localhost
    port: 6379
    password: heming
    database: 10

配置结构如下图所示：

3、新增RedisConfiguration.java类


import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;

@Configuration
@Slf4j
public class RedisConfiguration {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        //创建Template
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        //设置连接工厂
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        //设置序列化工具
        GenericJackson2JsonRedisSerializer jsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
        //key和hashKey采用string序列化方式
        redisTemplate.setKeySerializer(RedisSerializer.string());
        redisTemplate.setHashKeySerializer(RedisSerializer.string());
        //value和hashValue采用Json序列化方式
        redisTemplate.setValueSerializer(jsonRedisSerializer);
        redisTemplate.setHashValueSerializer(jsonRedisSerializer);
        return redisTemplate;
    }

}

4、新增RedisTestController.java类


import com.hmblogs.backend.entity.Girl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.concurrent.TimeUnit;

@RestController
@Slf4j
public class RedisTestController {

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * redis test
     * @return
     */
    @GetMapping(value = "/redisTest")
    public void getGirlList(){
        log.info("bbbbb");
        redisTemplate.opsForValue().set("name","小明"); // 设置k v
        String city = (String) redisTemplate.opsForValue().get("name"); // 拿到key为name的值
        log.info(city);
    }

    /**
     * redis test
     * @return
     */
    @GetMapping(value = "/redisTestJson")
    public void redisTestJson(){
        log.info("ccccc");
        Girl girlData = new Girl();
        girlData.setId(1);
        girlData.setCupSize("xxxx");
        girlData.setAge(12);
        redisTemplate.opsForValue().set("user:100",girlData);
        Girl girl = (Girl) redisTemplate.opsForValue().get("user:100");
        log.info(girl.toString());
    }
}

4、验证

浏览器直接访问GET接口

http://localhost:8081/redisTest

然后查看数据

发现没有乱码。

访问GET接口http://localhost:8081/redisTestJson

查看redis数据，如下图所示：

5、操作哈希类型数据

/**
     * redis test
     * @return
     */
    @GetMapping(value = "/redisTestHash")
    public void redisTestHash(){
        log.info("ddddd");
        HashOperations hashOperations = redisTemplate.opsForHash();

        hashOperations.put("100","name","tom"); // 设置k为100，哈希k为name v为100
        hashOperations.put("100","age","20");

        String name = (String) hashOperations.get("100", "name"); // 获取k为100，hashk为name的v
        log.info(name);

        Set keys = hashOperations.keys("100"); // 获取k为100的集合k
        log.info(keys.toString());

        List values = hashOperations.values("100"); // 获取k为100的集合v
        log.info(values.toString());

        hashOperations.delete("100","age"); // 删除age字段
    }

访问http://localhost:8081/redisTestHash

查看数据

6、操作列表类型数据

/**
     * redis test
     * @return
     */
    @GetMapping(value = "/redisTestList")
    public void redisTestList(){
        log.info("eeeee");
        //lpush lrange rpop llen
        ListOperations listOperations = redisTemplate.opsForList();

        listOperations.leftPushAll("mylist","a","b","c"); // 往k为mylist插入a，b，c
        log.info(listOperations.range("mylist", 0, -1).toString());

        listOperations.leftPush("mylist","d"); // 插入d
        List mylist = listOperations.range("mylist", 0, -1);
        log.info(mylist.toString()); // 输出

        listOperations.rightPop("mylist"); // 删除

        Long size = listOperations.size("mylist");
        log.info(size.toString());
        log.info(listOperations.range("mylist", 0, -1).toString());
    }

访问如下接口：http://localhost:8081/redisTestList

服务端console打印如下：

rpop的时候，移除了最先放入的a，规则就是先进先出。

数据如下图所示：

7、操作集合类型数据

/**
     * redis test
     * @return
     */
    @GetMapping(value = "/redisTestSet")
    public void redisTestSet(){
        log.info("fffff");
        //sadd smembers scard sinter sunion srem
        SetOperations setOperations = redisTemplate.opsForSet();

        setOperations.add("set1","a","b","c","d"); // 往set1 插入abcd
        setOperations.add("set2","a","b","x","y"); // 往set2 插入abxy

        Set members1 = setOperations.members("set1");
        log.info("set1:"+members1); // 输出

        Long size = setOperations.size("set1");
        log.info(size.toString()); // 输出

        Set members2 = setOperations.members("set2");
        log.info("set2:"+members2); // 输出

        Set intersect = setOperations.intersect("set1", "set2"); // 他们的交集
        log.info("inter:"+intersect);

        Set union = setOperations.union("set1", "set2");// 他们的并集
        log.info("union:"+union);

        setOperations.remove("set1","a","b"); // 在set1里面删除ab
    }

查看服务端的console打印如下：

查看set1的数据，如下图所示：

查看set2的数据，如下图所示：

8、操作有序集合类型数据

/**
     * redis test
     * @return
     */
    @GetMapping(value = "/redisTestZSet")
    public void redisTestZSet(){
        log.info("ggggg");
        //zadd zrange zincrby zrem
        ZSetOperations zSetOperations = redisTemplate.opsForZSet();

        zSetOperations.add("zset1","a",10); // 设置k为zset1v为a，分数为10
        zSetOperations.add("zset1","b",12); //同理
        zSetOperations.add("zset1","c",9); // 同理
        Set zset1 = zSetOperations.range("zset1", 0, -1);
        log.info(zset1.toString()); // 输出

        zSetOperations.incrementScore("zset1","c",10); // 为k为zset1v为c的加10分
        Set zsetAfter = zSetOperations.range("zset1", 0, -1);
        log.info(zsetAfter.toString()); // 输出

        zSetOperations.remove("zset1","a","b"); // 删除ab
        Set zsetDel = zSetOperations.range("zset1", 0, -1);
        log.info(zsetDel.toString()); // 输出

    }

查看console打印如下：

查看数据，如下图所示：

9、通用命令操作

/**
     * redis test
     * @return
     */
    @GetMapping(value = "/redisTestCommon")
    public void redisTestCommon(){
        log.info("hhhhh");
        //keys exists type del
        Set keys = redisTemplate.keys("*"); // 查找所有符合给定模式( pattern)的 key
        log.info(keys.toString());

        Boolean name = redisTemplate.hasKey("name");
        log.info(name.toString());
        Boolean set1 = redisTemplate.hasKey("set1");
        log.info(set1.toString());

        for (Object key : keys) {
            DataType type = redisTemplate.type(key); // 查找他们的类型是什么
            log.info(type.name());
        }

        redisTemplate.delete("mylist"); // 删除mylist
        log.info("删除后：");
        for (Object key : keys) {
            DataType type = redisTemplate.type(key); // 查找他们的类型是什么
            log.info(type.name());
        }
    }

查看console打印如下内容：