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BIO：Block IO 同步阻塞式 IO，就是我们平常使用的传统 IO，它的特点是模式简单使用方便，并发处理能力低。NIO：New IO 同步非阻塞 IO，是传统 IO 的升级，客户端和服务器端通过 Channel（通道）通讯，实现了多路复用。AIO&#x...

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