<!-- 创立形式 1 -->
ByteBuf buffer = Unpooled.buffer(10);
<!-- 创立形式 2-->
ByteBuf byteBuf = Unpooled.copiedBuffer("hello,world!", Charset.forName("utf-8"));
int len = byteBuf.readableBytes(); // 可读的字节数 12
System.out.println("len=" + len);
// 应用 for 取出各个字节
for (int i = 0; i < len; i++) {System.out.println((char) byteBuf.getByte(i)); // 强行转为字符串,否则会间接打印 ASCII 码
}
// 依照某个范畴读取
System.out.println(byteBuf.getCharSequence(0, 4, Charset.forName("utf-8")));
System.out.println(byteBuf.getCharSequence(4, 6, Charset.forName("utf-8")));
ByteBuf byteBuf1 = Unpooled.copiedBuffer(byteBuf);
byte[] bytes = ByteBufUtil.getBytes(byteBuf1);
<!-- 读取 -->
ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);
byte[] newBytes = new byte[bytes.length];
while (inputStream.read(newBytes)!=-1){inputStream.close();
System.out.println(new String(newBytes));
}
<!-- 读取一部分 -->
ByteArrayInputStream inputStream1 = new ByteArrayInputStream(bytes,2,5);
byte[] newBytes1 = new byte[bytes.length];
while (inputStream1.read(newBytes1)!=-1){inputStream1.close();
System.out.println(new String(newBytes1));
}