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netty_demo's Introduction

netty_demo

目的：用于学习netty相关基础知识

内容：1.netty服务器和客户端代码测试

通道channel

通道的读写操作

1.读操作

2.写操作

3.用一个FileChannel和read,write完成文件拷贝。

4.图片传输(transferFrom)

  • 注意事项：

    • BufferUnderflowException异常，放入和取出的类型应该一致。

    • 可以将普通的ByteBuffer转成只读buffer

    • MappedByteBuffer 直接在内存中进行修改

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