关于java:NettyUtils

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import io.netty.buffer.ByteBuf;
import static io.netty.buffer.ByteBufUtil.appendPrettyHexDump;
import static io.netty.util.internal.StringUtil.NEWLINE;


public class NettyUtils {public static void log(ByteBuf buffer) {int length = buffer.readableBytes();
        int rows = length / 16 + (length % 15 == 0 ? 0 : 1) + 4;
        StringBuilder buf = new StringBuilder(rows * 80 * 2)
                .append("read index:").append(buffer.readerIndex())
                .append("write index:").append(buffer.writerIndex())
                .append("capacity:").append(buffer.capacity())
                .append(NEWLINE);
        appendPrettyHexDump(buf, buffer);
        System.out.println(buf.toString());
    }

}

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