netty socket 断线重连 代码片段
时间: 2023-11-25 21:07:42 浏览: 101
以下是一个基于Netty的socket断线重连的代码片段:
```java
public class NettyClient {
private Bootstrap bootstrap;
private EventLoopGroup group;
private Channel channel;
private String host;
private int port;
public NettyClient(String host, int port) {
this.host = host;
this.port = port;
this.bootstrap = new Bootstrap();
this.group = new NioEventLoopGroup();
this.bootstrap.group(group)
.channel(NioSocketChannel.class)
.option(ChannelOption.SO_KEEPALIVE, true)
.handler(new ChannelInitializer<SocketChannel>() {
@Override
protected void initChannel(SocketChannel ch) throws Exception {
ChannelPipeline pipeline = ch.pipeline();
// 添加自定义的handler
pipeline.addLast(new MyHandler());
}
});
}
public void start() {
try {
ChannelFuture future = bootstrap.connect(host, port).sync();
channel = future.channel();
System.out.println("连接成功");
channel.closeFuture().sync();
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
group.shutdownGracefully();
System.out.println("断开连接");
// 断线重连
reconnect();
}
}
private void reconnect() {
while (true) {
try {
Thread.sleep(5000);
ChannelFuture future = bootstrap.connect(host, port).sync();
channel = future.channel();
System.out.println("重新连接成功");
channel.closeFuture().sync();
break;
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
```
在上述代码中,我们创建了一个NettyClient类,其中包含了一个start()方法和一个reconnect()方法。在start()方法中,我们首先使用bootstrap.connect()方法连接到指定的主机和端口,然后等待连接成功。如果连接成功,我们就可以使用channel对象进行数据传输。当连接断开时,我们会进入finally块,关闭连接并调用reconnect()方法进行断线重连。在reconnect()方法中,我们使用while循环不断尝试重新连接,直到连接成功为止。
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