Spring Boot 中使用 Jedis 来操作 Redis

把之前老的项目切换到用 Spring Boot 时，由于抛弃了 xml 配置文件的使用，需要把之前 Jedis 配置现在用注解的形式重新实现一遍。

老的代码

• config.properties

# redis数据库连接配置(covert)
redis.url=redis://:name@host:6379/2
# 最大实例数
redis.maxTotal=100
# 最大空闲实例数
redis.maxIdle=10
# (创建实例时)最大等待时间
redis.maxWaitMillis=10000
# (创建实例时)是否验证
redis.testOnBorrow=true

• spring.xml

<!--加载外部数据库配置-->
<context:property-placeholder location="classpath:config.properties" file-encoding="utf-8" ignore-unresolvable="true"/>

<!-- 配置redis池，依次为最大实例数，最大空闲实例数，(创建实例时)最大等待时间，(创建实例时)是否验证 -->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
    <property name="maxTotal" value="${redis.maxTotal}"/>
    <property name="maxIdle" value="${redis.maxIdle}"/>
    <property name="maxWaitMillis" value="${redis.maxWaitMillis}"/>
    <property name="testOnBorrow" value="${redis.testOnBorrow}"/>
</bean>
<bean id="convertShardInfo" class="redis.clients.jedis.JedisShardInfo">
    <constructor-arg name="host" value="${redis.url}"/>
</bean>
<bean id="convertJedisPool" class="redis.clients.jedis.ShardedJedisPool">
    <constructor-arg index="0" ref="jedisPoolConfig"/>
    <constructor-arg index="1">
        <list>
            <ref bean="convertShardInfo"/>
        </list>
    </constructor-arg>
</bean>

新的代码

• application.yml

# redis数据库连接配置(covert)
redisConfig:
  url: "redis://:name@host:6379/2"
  # 最大实例数
  maxTotal: 100
  # 最大空闲实例数
  maxIdle: 10
  # (创建实例时)最大等待时间
  maxWaitMillis: 10000
  # (创建实例时)是否验证
  testOnBorrow: true

• RedisConfig.java

package com.raventech.web.models.yml;

@Component
@ConfigurationProperties(prefix = "redisConfig")
public class RedisConfig implements Serializable {
    private static final long serialVersionUID = 1097752157567754456L;
    private String url;
    private Integer maxTotal;
    private Integer maxIdle;
    private Long maxWaitMillis;
    private Boolean testOnBorrow;
    ......

• JedisConfiguration.java

@Configuration
@ComponentScan({"com.raventech.web.models.yml"}) // 解决 Configuration 注解中使用 Autowired 注解 IDE 报错
public class JedisConfiguration {
    @Autowired
    RedisConfig redisConfig;

    @Bean
    public ShardedJedisPool convertJedisPool() {
        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
        jedisPoolConfig.setMaxTotal(redisConfig.getMaxTotal());
        jedisPoolConfig.setMaxIdle(redisConfig.getMaxIdle());
        jedisPoolConfig.setMaxWaitMillis(redisConfig.getMaxWaitMillis());
        jedisPoolConfig.setTestOnBorrow(redisConfig.getTestOnBorrow());
        List<JedisShardInfo> jedisShardInfoList = new ArrayList<>();
        jedisShardInfoList.add(new JedisShardInfo(redisConfig.getUrl()));
        return new ShardedJedisPool(jedisPoolConfig, jedisShardInfoList);
    }
}

应用

@Autowired
private ShardedJedisPool convertJedisPool;

public String convertRedisGet(String key) {
    ShardedJedis resource = convertJedisPool.getResource();
    String result = resource.get(key);
    resource.close();
    return result;
}
}