Spring Boot 实践2 --项目中使用 Redis

背景：基于实践1中，我们使用Redis做为缓存。

(转载请注明来源:cnblogs coder-fang)

1. POM中加入依赖:

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

2. 在application.properties中加入配置:

   spring.redis.host=127.0.0.1
   spring.redis.port=6379
   spring.redis.pool.max-idle=8
   spring.redis.pool.max-active=8

3. 创建RedisConfig类，并注入RedisTemplate bean:

   package com.test.demo.config;
   
   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.core.StringRedisTemplate;
   
   @Configuration
   public class RedisConfig {
   
       @Bean
       public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory)
       {
           StringRedisTemplate stringRedisTemplate = new StringRedisTemplate(factory);
           return stringRedisTemplate;
       }
   }

4. 实现redisRepostory通用功能:

   package com.test.demo.db.repo.nosql;
   
   import java.util.concurrent.TimeUnit;
   
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.data.redis.core.RedisTemplate;
   import org.springframework.stereotype.Repository;
   
   @Repository
   public class RedisRepository {
   
       @Autowired
       RedisTemplate<String, String> redisTemplate;
   
       public void add(String key,String value) {
           redisTemplate.opsForValue().set(key, value);
       }
       public void add(String key,String value,Long time) {
           redisTemplate.opsForValue().set(key, value, time, TimeUnit.MINUTES);
       }
   
       public String get(String key) {
           return redisTemplate.opsForValue().get(key);
       }
   
       public void delete(String key) {
           redisTemplate.opsForValue().getOperations().delete(key);
       }
   
   }

5. 创建单元测试并运行:
   
   

   package com.test.demo;
   
   import static org.junit.Assert.assertEquals;
   import static org.junit.Assert.assertNull;
   import org.junit.Test;
   import org.junit.runner.RunWith;
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.boot.test.context.SpringBootTest;
   import org.springframework.test.context.junit4.SpringRunner;
   
   import com.test.demo.db.repo.nosql.RedisRepository;
   
   @RunWith(SpringRunner.class)
   @SpringBootTest
   public class RedisTest {
   
       @Autowired
       RedisRepository redisRepo;
   
       @Test
       public void testRedis(){
           redisRepo.add("test", "123", 1L);
           String val = redisRepo.get("test");
           assertEquals(val, "123");
           System.out.println(val);
           val = redisRepo.get("321");
           System.out.println(val);
           assertNull(val);
       }
   }

YES,项目中使用redis已完成。