websocket java端口配置
时间: 2023-11-19 08:07:27 浏览: 199
以下是websocket在Java端口配置的步骤:
1.添加依赖项
在Maven项目中,需要在pom.xml文件中添加以下依赖项:
```xml
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.1.25.Final</version>
</dependency>
```
2.创建WebSocketServer
创建一个WebSocketServer类,继承自ChannelInitializer,并实现initChannel方法。在initChannel方法中,添加以下代码:
```java
@Override
protected void initChannel(SocketChannel ch) throws Exception {
ChannelPipeline pipeline = ch.pipeline();
pipeline.addLast(new HttpServerCodec());
pipeline.addLast(new ChunkedWriteHandler());
pipeline.addLast(new HttpObjectAggregator(65536));
pipeline.addLast(new WebSocketServerProtocolHandler("/websocket"));
pipeline.addLast(new TextWebSocketFrameHandler());
}
```
3.创建TextWebSocketFrameHandler
创建一个TextWebSocketFrameHandler类,继承自SimpleChannelInboundHandler,并实现channelRead0方法。在channelRead0方法中,添加以下代码:
```java
@Override
protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg) throws Exception {
Channel incoming = ctx.channel();
for (Channel channel : channels) {
if (channel != incoming) {
channel.writeAndFlush(new TextWebSocketFrame("[" + incoming.remoteAddress() + "]" + msg.text()));
} else {
channel.writeAndFlush(new TextWebSocketFrame("[you]" + msg.text()));
}
}
}
```
4.启动WebSocketServer
在main方法中,添加以下代码:
```java
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
try {
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.childHandler(new WebSocketServerInitializer());
Channel ch = b.bind(port).sync().channel();
ch.closeFuture().sync();
} finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
```
其中,port是你想要绑定的端口号。
5.测试WebSocketServer
启动WebSocketServer后,可以使用浏览器或者其他WebSocket客户端连接到该服务器。在浏览器中,可以使用以下JavaScript代码连接到WebSocketServer:
```javascript
var socket = new WebSocket("ws://localhost:8080/websocket");
socket.onmessage = function(event) {
console.log("Received message: " + event.data);
};
socket.send("Hello, server!");
```
以上是websocket在Java端口配置的步骤,希望对你有所帮助。
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