众所周知，redis多有个db，在jedis中可以使用select方法去动态的选择redis的database，但在springboot提供的StringRedisTemplate中确，没有该方法，好在StringRedisTemplate预留了一个setConnectionFactory方法，本文主为通过修改ConnectionFactory从而达到动态切换database的效果。
pom.xml文件中引入spring-boot-starter-redis,版本可自行选择
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-redis</artifactId>
<version>1.3.8.RELEASE</version>
</dependency>application.properties
#redis配置 spring.redis.database=0 spring.redis.host=127.0.0.1 spring.redis.port=6379 spring.redis.password=pwd spring.redis.timeout=0 spring.redis.pool.max-active=8 spring.redis.pool.max-idle=8 spring.redis.pool.max-wait=-1 spring.redis.pool.min-idle=0
TestCRedis.java
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = Application.class)
public class TestCRedis{
protected static Logger LOGGER = LoggerFactory.getLogger(TestCRedis.class);
@Autowired
private StringRedisTemplate stringRedisTemplate;
@Test
public void t1(){
ValueOperations<String, String> stringStringValueOperations = stringRedisTemplate.opsForValue();
stringStringValueOperations.set("testkey","testvalue");
String testkey = stringStringValueOperations.get("testkey");
LOGGER.info(testkey);
}
}运行TestCRedis.t1(),控制台打印“testvalue”redis连接成功
首先使用redis-cli,在redis的0、1、2三个库中，分别设置test 的值，分别为;0、1、2
TestCRedis.java
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = Application.class)
public class TestCRedis{
protected static Logger LOGGER = LoggerFactory.getLogger(TestCRedis.class);
@Autowired
private StringRedisTemplate stringRedisTemplate;
@Test
public void t1(){
ValueOperations<String, String> stringStringValueOperations = stringRedisTemplate.opsForValue();
stringStringValueOperations.set("testkey","testvalue");
String testkey = stringStringValueOperations.get("testkey");
LOGGER.info(testkey);
}
public void t2() {
for (int i = 0; i <= 2; i++) {
JedisConnectionFactory jedisConnectionFactory = (JedisConnectionFactory) stringRedisTemplate.getConnectionFactory();
jedisConnectionFactory.setDatabase(i);
stringRedisTemplate.setConnectionFactory(jedisConnectionFactory);
ValueOperations valueOperations = stringRedisTemplate.opsForValue();
String test = (String) valueOperations.get("test");
LOGGER.info(test);
}
}运行TestCRedis.t2(),控制台分别打印 “0、1、2”，database切换成功
