SpringBoot项目中Redis配置多数据库

背景：
一个小需求，单Redis服务实例下根据业务配置多个数据库，需要自定义Redis配置稍作改动才能实现，此时就不能RedisTemplate一步就位了~

注： Redis使用 单线程-多路复用 IO模型 ，别把多业务的并发全加在一个redis实例上，最好多实例或者集群处理！

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基本的配置我就不多说了，可以参考我之前的博客：SpringBoot 整合 Redis 使用详解

直接上步骤：

在 application.yml 中添加参数配置：

redis:
  //此处设置多业务对应数据库
  database:
    fore: 0
    wechat: 1
  host: 117.133.13.74
  password: yjyj
  port: 6379
  timeout: 3000
  pool:
    max-idle: 30
    min-idle: 0
    max-wait: -1

增加自定义配置类：

**
 * @Author: yuanj
 * @Date: 2019/2/16 16:35
 */
@Configuration
@EnableAutoConfiguration
public class RedisConfig {

    @Value("${redis.database.fore}")
    private int foreDatabase;

    @Value("${redis.database.wechat}")
    private int wechatDatabase;

    @Value("${redis.host}")
    private String host;

    @Value("${redis.password}")
    private String password;

    @Value("${redis.port}")
    private int port;

    @Value("${redis.timeout}")
    private int timeout;

    @Value("${redis.pool.max-idle}")
    private int maxIdle;

    @Value("${redis.pool.min-idle}")
    private int minIdle;

    @Value("${redis.pool.max-wait}")
    private long maxWait;

    @Bean
    public JedisPoolConfig getJedisPoolConfig() {
        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
        jedisPoolConfig.setMaxIdle(maxIdle);
        jedisPoolConfig.setMinIdle(minIdle);
        jedisPoolConfig.setMaxWaitMillis(maxWait);
        return jedisPoolConfig;
    }


    @Bean(name = "foreRedisTemplate")
    public RedisTemplate getForeRedisTemplate(){

        JedisConnectionFactory connectionFactory = new JedisConnectionFactory();
        connectionFactory.setPoolConfig(getJedisPoolConfig());
        connectionFactory.setDatabase(foreDatabase);	//此处配置database
        connectionFactory.setHostName(host);
        connectionFactory.setPassword(password);
        connectionFactory.setPort(port);
        connectionFactory.setTimeout(timeout);
        connectionFactory.afterPropertiesSet();			//记得添加这行！

        StringRedisTemplate stringRedisTemplate = new StringRedisTemplate(connectionFactory);
        return stringRedisTemplate;
    }

    @Bean(name = "wechatRedisTemplate")
    public RedisTemplate getWechatRedisTemplate(){

        JedisConnectionFactory connectionFactory = new JedisConnectionFactory();
        connectionFactory.setPoolConfig(getJedisPoolConfig());
        connectionFactory.setDatabase(wechatDatabase);
        connectionFactory.setHostName(host);
        connectionFactory.setPassword(password);
        connectionFactory.setPort(port);
        connectionFactory.setTimeout(timeout);
        connectionFactory.afterPropertiesSet();

        StringRedisTemplate stringRedisTemplate = new StringRedisTemplate(connectionFactory);
        return stringRedisTemplate;
    }

}

测试：

@RestController
public class TestController {

	@Autowired
	private RedisConfig redisConfig;

	@Autowired
	private RedisTemplate foreRedisTemplate;

	@Autowired
	private RedisTemplate wechatRedisTemplate;

	@RequestMapping(value = "/testRedis", method = RequestMethod.GET)
	public String test() {
//        RedisTemplate foreRedisTemplate = redisConfig.getForeRedisTemplate();
		ValueOperations operations = foreRedisTemplate.opsForValue();
		operations.set("age", "11");

//        RedisTemplate wechatRedisTemplate = redisConfig.getWechatRedisTemplate();
		ValueOperations operations2 = wechatRedisTemplate.opsForValue();
		operations2.set("address", "bj");

		return "OK";
	}
}

注意：上面既可以直接autowire两个RedisTemplate，也可以通过redisConfig得到。

o ~

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