71 lines
2.3 KiB
Java
71 lines
2.3 KiB
Java
package io.github.ehlxr.did.common;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelFutureListener;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.*;
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import java.net.SocketAddress;
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/**
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* @author ehlxr
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*/
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public class NettyUtil {
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private static final Logger logger = LoggerFactory.getLogger(NettyUtil.class);
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/**
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* 获取 Channel 的远程 IP 地址
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*/
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public static String parseRemoteAddr(final Channel channel) {
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if (null == channel) {
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return "";
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}
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SocketAddress remote = channel.remoteAddress();
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final String addr = remote != null ? remote.toString() : "";
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if (addr.length() > 0) {
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int index = addr.lastIndexOf("/");
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if (index >= 0) {
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return addr.substring(index + 1);
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}
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return addr;
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}
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return "";
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}
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public static void closeChannel(Channel channel) {
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final String addrRemote = parseRemoteAddr(channel);
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channel.close().addListener((ChannelFutureListener) future ->
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logger.info("closeChannel: close the connection to remote address[{}] result: {}",
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addrRemote, future.isSuccess()));
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}
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public static byte[] toBytes(Object obj) throws IOException {
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ByteArrayOutputStream bos = new ByteArrayOutputStream();
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ObjectOutputStream oos = new ObjectOutputStream(bos);
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oos.writeObject(obj);
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oos.flush();
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// if (bytes.length > Constants.DECODER_FRAMELENGTH) {
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// logger.error("bytes length should not bigger than {}", Constants.DECODER_FRAMELENGTH);
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// return null;
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// } else if (bytes.length < Constants.DECODER_FRAMELENGTH) {
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// byte[] result = new byte[Constants.DECODER_FRAMELENGTH];
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//
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// // 如果长度不足，填充
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// System.arraycopy(bytes, 0, result, 0, bytes.length);
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// return result;
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// }
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return bos.toByteArray();
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}
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public static Object toObject(byte[] bts) throws IOException, ClassNotFoundException {
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ByteArrayInputStream bis = new ByteArrayInputStream(bts);
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ObjectInputStream ois = new ObjectInputStream(bis);
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return ois.readObject();
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}
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}
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