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。
springboot连接redis
pom.xml文件中引入spring-boot-starter-redis,版本可自行选择
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<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-redis</artifactId> <version> 1.3 . 8 .RELEASE</version> </dependency> |
application.properties
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#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
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@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
redis动态切换database
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
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@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
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原文链接：https://www.cnblogs.com/yuwentims/articles/9736905.html
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