layout | category | title | tagline | tag | lock | ||
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itstack-demo-netty-1 |
netty案例,netty4.1基础入门篇七《嗨!NettyClient》 |
by 付政委 |
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need |
作者:小傅哥
博客:https://bugstack.cn
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在前六章的案例中使用socket模拟器链接我们的NettyServer,进行通信测试。本章节我们写一个helloworld版的NettyClient客户端,与我们的socket模拟器进行通信。在netty中客户端与服务端的写法基本类似,注意一些细节即可,这也是netty的强大之处,它把nio流与sokcet封装的相当简单易用。
- jdk1.8【jdk1.7以下只能部分支持netty】
- Netty4.1.36.Final【netty3.x 4.x 5每次的变化较大,接口类名也随着变化】
- telnet 测试【可以现在你的win7机器上测试这个命令,用于链接到服务端的测试命令】
itstack-demo-netty-1-07
└── src
├── main
│ └── java
│ └── org.itstack.demo.netty.client
│ ├── MyChannelInitializer.java
│ └── NettyClient.java
└── test
└── java
└── org.itstack.demo.netty.test
└── ApiTest.java
MyChannelInitializer.java
/**
* 虫洞栈:https://bugstack.cn
* 公众号:bugstack虫洞栈 {获取学习源码}
* Create by fuzhengwei on 2019
*/
public class MyChannelInitializer extends ChannelInitializer<SocketChannel> {
@Override
protected void initChannel(SocketChannel channel) throws Exception {
System.out.println("链接报告开始");
System.out.println("链接报告信息:本客户端链接到服务端。channelId:" + channel.id());
System.out.println("链接报告完毕");
}
}
NettyClient.java
/**
* 虫洞栈:https://bugstack.cn
* 公众号:bugstack虫洞栈 {获取学习源码}
* Create by fuzhengwei on 2019
*/
public class NettyClient {
public static void main(String[] args) {
new NettyClient().connect("127.0.0.1", 7397);
}
private void connect(String inetHost, int inetPort) {
EventLoopGroup workerGroup = new NioEventLoopGroup();
try {
Bootstrap b = new Bootstrap();
b.group(workerGroup);
b.channel(NioSocketChannel.class);
b.option(ChannelOption.AUTO_READ, true);
b.handler(new MyChannelInitializer());
ChannelFuture f = b.connect(inetHost, inetPort).sync();
System.out.println("itstack-demo-netty client start done. {关注公众号:bugstack虫洞栈,获取源码}");
f.channel().closeFuture().sync();
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
workerGroup.shutdownGracefully();
}
}
}
启动模拟器NetAssist 设置TCP Server
启动客户端NettyClient
执行结果
链接报告开始
链接报告信息:本客户端链接到服务端。channelId:ea1df0b3
链接报告完毕
itstack-demo-netty client start done. {关注公众号:bugstack虫洞栈,获取源码}
Process finished with exit code -1
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