官方參考文檔
redisson-spring-boot-starter 官方文檔
一）、引入Redisson整合Spring Boot依賴
<!-- Spring Boot 相關依賴 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
<exclusions>
<exclusion>
<groupId>io.lettuce</groupId>
<artifactId>lettuce-core</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- 引入Jedis客戶端依賴 -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.1</version>
</dependency>
<!-- 引入Redisson依賴 -->
<dependency>
<groupId>org.redisson</groupId>
<artifactId>redisson-spring-boot-starter</artifactId>
<version>3.12.5</version>
</dependency>
二）、通過YAML文件配置Redisson單節點模式
需要另行創建redisson-single.yml文件，名字可以自定義，但是要和接下來的Bean配置一致
singleServerConfig:
idleConnectionTimeout: 10000
connectTimeout: 10000
timeout: 3000
retryAttempts: 3
retryInterval: 1500
# 如果Redis服務端配置有密碼需要替換password的值
password: null
subscriptionsPerConnection: 5
clientName: null
# 替換爲自己真實Redis服務端連接
address: "redis://127.0.0.1:6379"
subscriptionConnectionMinimumIdleSize: 1
subscriptionConnectionPoolSize: 50
connectionMinimumIdleSize: 24
connectionPoolSize: 64
database: 0
dnsMonitoringInterval: 5000
threads: 16
nettyThreads: 32
codec: !<org.redisson.codec.FstCodec> {}
transportMode: "NIO"
三）、編寫Redisson配置對象
/**
* Redisson配置類
*
* @author MoCha
* @date 2020/4/25
*/
@Configuration
public class RedissonConfig {
@Bean(destroyMethod = "shutdown")
public RedissonClient redisson() throws IOException {
return Redisson.create(
Config.fromYAML(new ClassPathResource("redisson-single.yml").getInputStream()));
}
}
四）、分佈式鎖運用
/**
* 測試Redisson分佈式鎖
*
* @author MoCha
* @date 2020/4/25
*/
@Slf4j
@RestController
@RequiredArgsConstructor(onConstructor = @__(@Autowired))
public class RedissonController {
private final RedissonClient redissonClient;
@GetMapping("/test")
public String testLock() {
RLock coffeeLock = redissonClient.getLock("coffee");
log.info("進入方法");
try {
// 嘗試加鎖，最多等待20秒，上鎖以後5秒自動解鎖
Future<Boolean> coffeeLockFuture = coffeeLock.tryLockAsync(20, 5, TimeUnit.SECONDS);
boolean result = coffeeLockFuture.get();
if (result) {
log.info("我獲得了鎖");
Coffee coffee = coffeeService.getById(1);
if (coffee.getStock() > 0) {
coffee.setStock(coffee.getStock() - 1);
coffeeService.updateById(coffee);
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
log.info("我釋放了鎖");
coffeeLock.unlock();
}
return "success";
}
}
關於Redisson 中文Wiki文檔的坑
明明都是官方Github的文檔，但是中文語言的Wiki文檔，在單節點模式配置很明顯就問題，
剛開始我是看了中文的Wiki，然後發現報錯，一看源碼才發現SingleServerConfig和
org.redisson.config.Config根本就沒有中文Wiki文檔Yaml文件的一些配置。
然後我又看了英文文檔的，發現兩個文檔的配置有出入。果斷英文文檔的配置是可以使用
的。配置後確實沒問題。不得不說，這個坑，會把一開始看中文文檔的朋友給整懵了。
Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "pingTimeout" (class org.redisson.config.SingleServerConfig), not marked as ignorable (25 known properties: "timeout", "subscriptionsPerConnection", "keepAlive", "sslKeystorePassword", "retryInterval", "retryAttempts", "idleConnectionTimeout", "sslTruststorePassword", "sslEnableEndpointIdentification", "address", "sslTruststore", "username", "connectTimeout", "subscriptionConnectionPoolSize", "password", "sslProvider", "tcpNoDelay", "connectionMinimumIdleSize", "subscriptionConnectionMinimumIdleSize", "sslKeystore", "pingConnectionInterval", "clientName", "connectionPoolSize", "database", "dnsMonitoringInterval"])
at [Source: (StringReader); line: 3, column: 20] (through reference chain: org.redisson.config.Config["singleServerConfig"]->org.redisson.config.SingleServerConfig["pingTimeout"])
