spring boot集成redis

遵守“約定大於配置”原則的Spring boot集成常用的NO SQL是很方便的，本例拿redis做一個簡單的demo，使用Redis的set和get命令。
引入redis的依賴包。

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

在@Configuration或者集成了這個註解的註解標識的類中聲明一個Redis的bean，本例是在入口類上聲明的Bean：

@SpringBootApplication
public class Application {
    @Bean
    StringRedisTemplate template(RedisConnectionFactory connectionFactory) {
        return new StringRedisTemplate(connectionFactory);
    }

    public static void main(String[] args) throws InterruptedException {
        SpringApplication.run(Application.class, args);
    }
}

在Controller裏注入StringRedisTemplate:

@RestController
public class RedisController {
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @RequestMapping("/redis/set")
    public ResultBean set(@RequestParam(name = "name", defaultValue = "CYF") String name){
        stringRedisTemplate.opsForValue().set("test", name);
        return ResultBean.ok();
    }
    @RequestMapping("/redis/get")
    public ResultBean set(){
        String value = stringRedisTemplate.opsForValue().get("test");
        return ResultBean.ok(value);
    }
}

啓動項目，並訪問:
set命令:

get命令:

本例下redis是默認訪問的127.0.0.1 6379的redis server，我們可以修改配置讓其訪問指定的redis server。
到spring boot的官方說明上可以找到對應配置，把這些配置寫到resources/appcation.properties這裏就不做演示了。

# REDIS (RedisProperties)
spring.redis.cluster.max-redirects= # Maximum number of redirects to follow when executing commands across the cluster.
spring.redis.cluster.nodes= # Comma-separated list of "host:port" pairs to bootstrap from.
spring.redis.database=0 # Database index used by the connection factory.
spring.redis.url= # Connection URL, will override host, port and password (user will be ignored), e.g. redis://user:[email protected]:6379
spring.redis.host=localhost # Redis server host.
spring.redis.password= # Login password of the redis server.
spring.redis.ssl=false # Enable SSL support.
spring.redis.pool.max-active=8 # Max number of connections that can be allocated by the pool at a given time. Use a negative value for no limit.
spring.redis.pool.max-idle=8 # Max number of "idle" connections in the pool. Use a negative value to indicate an unlimited number of idle connections.
spring.redis.pool.max-wait=-1 # Maximum amount of time (in milliseconds) a connection allocation should block before throwing an exception when the pool is exhausted. Use a negative value to block indefinitely.
spring.redis.pool.min-idle=0 # Target for the minimum number of idle connections to maintain in the pool. This setting only has an effect if it is positive.
spring.redis.port=6379 # Redis server port.
spring.redis.sentinel.master= # Name of Redis server.
spring.redis.sentinel.nodes= # Comma-separated list of host:port pairs.
spring.redis.timeout=0 # Connection timeout in milliseconds.

從配置上可以看到，既支持單個redis，也支持redis集羣和連接池，還是很強大的，中小型的併發量是可以支持的了。