Redis总结及设置营业状态案例

Redis简介:

rRedis服务开启与停止:

服务开启:

在Redis配置文件中输入cmd进入命令行输入redis-server

redis-cli.exe -h -p：连接到redis服务

设置密码:在redis.windows.conf中找到requirepass 密码

服务停止：

在服务开启的界面按ctrl+c

Redis数据类型:

各种数据类型的特点:

Redis常用命令:

在java中操作Reids:

Redis的java客户端:

1.导入Spring Data Redis的maven坐标

XML 复制代码

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

2.配置Redis数据源

XML 复制代码

sky:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    host: localhost
    port: 3306
    database: sky_take_out
    username: root
    password: CHC52099
    maintainTimeStats: true
  redis:
    host: localhost
    port: 6379
    database: 10

3.编写配置类，创建RedisTemplate对象

java 复制代码

package com.sky.config;

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.StringRedisSerializer;

@Configuration
@Slf4j
public class RedisConfiguration {
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        log.info("开始创建redis模板对象...");
        RedisTemplate redisTemplate = new RedisTemplate();
        //设置redis的连接工厂对象
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        //设置redis的key序列化器
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        return redisTemplate;
    }
}

4.通过RedisTemplate对象操作Redis

java 复制代码

package com.sky.test;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.*;

import java.util.concurrent.TimeUnit;

@SpringBootTest
public class SpringDataRedis {
    @Autowired
    private RedisTemplate redisTemplate;

    @Test
    public void testRedisTemplate() {
        System.out.println(redisTemplate);
        ValueOperations valueOperations = redisTemplate.opsForValue();
        HashOperations hashOperations = redisTemplate.opsForHash();
        ListOperations listOperations = redisTemplate.opsForList();
        SetOperations setOperations = redisTemplate.opsForSet();
        ZSetOperations zSetOperations = redisTemplate.opsForZSet();
    }

    /**
     * 操作字符串类型的数据
     */
    @Test
    public void testString() {
        redisTemplate.opsForValue().set("hello", "world");
        System.out.println(redisTemplate.opsForValue().get("hello"));
        redisTemplate.opsForValue().setIfAbsent("hello", "sky");
        redisTemplate.opsForValue().setIfPresent("hello", "sky",3, TimeUnit.MINUTES);
    }
    @Test
    public void testHash(){
        redisTemplate.opsForHash().put("sky","name","sky");
        redisTemplate.opsForHash().put("sky","age",18);
        System.out.println(redisTemplate.opsForHash().get("sky","name"));
        System.out.println(redisTemplate.opsForHash().get("sky","age"));
    }
}

设置营业状态:

需求说明：

controller层:

java 复制代码

package com.sky.controller.admin;

import com.sky.result.Result;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
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.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController("adminShopController")
@RequestMapping("/admin/shop")
@Api(tags = "店铺相关接口")
@Slf4j
public class ShopController {
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 设置店铺营业状态
     *
     * @param status
     * @return
     */
    @RequestMapping("/{status}")
    @ApiOperation("设置店铺状态")
    public Result setStatus(@PathVariable Integer status) {
        log.info("设置店铺状态为:{}", status == 1 ? "营业中" : "打烊了");
        redisTemplate.opsForValue().set("SHOP_STATUS", status);
        return Result.success();
    }
    @GetMapping("/status")
    @ApiOperation("获取店铺营业状态")
    public Result<Integer> getStatus() {
        Integer status = (Integer) redisTemplate.opsForValue().get("SHOP_STATUS");
        log.info("获取店铺营业状态为:{}", status == 1 ? "营业中" : "打烊了");
        return Result.success(status);
    }

}

然后拿接口文档测试没有问题