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发布（发送消息）

要发布消息，您可以像其他操作一样，使用底层的 [Reactive]RedisConnection 或高层的 [Reactive]RedisOperations。这两个实体都提供 publish 方法，该方法接受消息和目标通道作为参数。虽然 RedisConnection 需要原始数据（字节数组），但 [Reactive]RedisOperations 允许将任意对象作为消息传递，如下例所示：spring-doc.cadn.net.cn

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Reactivespring-doc.cadn.net.cn

// send message through connection
RedisConnection con = …
byte[] msg = …
byte[] channel = …
con.pubSubCommands().publish(msg, channel);

// send message through RedisOperations
RedisOperations operations = …
Long numberOfClients = operations.convertAndSend("hello!", "world");

// send message through connection
ReactiveRedisConnection con = …
ByteBuffer[] msg = …
ByteBuffer[] channel = …
con.pubSubCommands().publish(msg, channel);

// send message through ReactiveRedisOperations
ReactiveRedisOperations operations = …
Mono<Long> numberOfClients = operations.convertAndSend("hello!", "world");