Spring Boot 中配置 Redis 连接池的详细

一、添加依赖

在 pom.xml 文件中添加以下依赖：

<dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId></dependency>
</dependencies>

二、配置 Redis 连接池

（一）通过 Java 配置类

创建一个配置类，用于定义 Redis 连接工厂和连接池配置：

import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {@Beanpublic LettuceConnectionFactory redisConnectionFactory() {RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();redisStandaloneConfiguration.setHostName("localhost");redisStandaloneConfiguration.setPort(6379);GenericObjectPoolConfig<Object> poolConfig = new GenericObjectPoolConfig<>();poolConfig.setMaxTotal(10); // 最大连接数poolConfig.setMaxIdle(5); // 最大空闲连接数poolConfig.setMinIdle(1); // 最小空闲连接数poolConfig.setMaxWaitMillis(2000); // 获取连接的最大等待时间LettucePoolingClientConfiguration poolingClientConfig = LettucePoolingClientConfiguration.builder().poolConfig(poolConfig).build();return new LettuceConnectionFactory(redisStandaloneConfiguration, poolingClientConfig);}@Beanpublic RedisTemplate<String, Object> redisTemplate() {RedisTemplate<String, Object> template = new RedisTemplate<>();template.setConnectionFactory(redisConnectionFactory());template.setKeySerializer(new StringRedisSerializer());template.setValueSerializer(new StringRedisSerializer());return template;}
}

（二）通过 `application.properties` 文件

在 application.properties 文件中添加以下配置：

spring.redis.host=localhost
spring.redis.port=6379
spring.redis.database=0
spring.redis.lettuce.pool.max-active=10
spring.redis.lettuce.pool.max-idle=5
spring.redis.lettuce.pool.min-idle=1
spring.redis.lettuce.pool.max-wait=-1

三、测试 Redis 操作

创建一个简单的控制器来测试 Redis 的基本操作：

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.RequestParam;
import org.springframework.web.bind.annotation.RestController;@RestController
public class RedisController {@Autowiredprivate RedisTemplate<String, Object> redisTemplate;@GetMapping("/set")public String set(@RequestParam String key, @RequestParam String value) {redisTemplate.opsForValue().set(key, value);return "Value set successfully";}@GetMapping("/get")public String get(@RequestParam String key) {return (String) redisTemplate.opsForValue().get(key);}@GetMapping("/delete")public String delete(@RequestParam String key) {redisTemplate.delete(key);return "Value deleted successfully";}
}