vue+SSM+Netty实现ws通信
1、在application中初始化netty服务器
public static void main(String[] args) {
SpringApplication.run(PartialPressureApplication.class, args);
try {
new NettyServer(12345).start();
System.out.println("https://blog.csdn.net/moshowgame");
System.out.println("http://127.0.0.1:6688/netty-websocket/index");
}catch(Exception e) {
System.out.println("NettyServerError:"+e.getMessage());
}
}
创建NettyServer类
public class NettyServer {
private final int port;
public NettyServer(int port) {
this.port = port;
}
public void start() throws Exception {
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup group = new NioEventLoopGroup();
try {
ServerBootstrap sb = new ServerBootstrap();
sb.option(ChannelOption.SO_BACKLOG, 1024);
sb.group(group, bossGroup) // 绑定线程池
.channel(NioServerSocketChannel.class) // 指定使用的channel
.localAddress(this.port)// 绑定监听端口
.childHandler(new ChannelInitializer<SocketChannel>() { // 绑定客户端连接时候触发操作
@Override
protected void initChannel(SocketChannel ch) throws Exception {
System.out.println("收到新连接");
//websocket协议本身是基于http协议的，所以这边也要使用http解编码器
ch.pipeline().addLast(new HttpServerCodec());
//以块的方式来写的处理器
ch.pipeline().addLast(new ChunkedWriteHandler());
ch.pipeline().addLast(new HttpObjectAggregator(8192));
ch.pipeline().addLast(new MyWebSocketHandler());
ch.pipeline().addLast(new WebSocketServerProtocolHandler("/ws", null, true, 65536 * 10));
}
});
ChannelFuture cf = sb.bind().sync(); // 服务器异步创建绑定
System.out.println(NettyServer.class + " 启动正在监听： " + cf.channel().localAddress());
cf.channel().closeFuture().sync(); // 关闭服务器通道
} finally {
group.shutdownGracefully().sync(); // 释放线程池资源
bossGroup.shutdownGracefully().sync();
}
}
}
创建管理池
/**
* MyChannelHandlerPool
* 通道组池，管理所有websocket连接
* @author zhengkai.blog.csdn.net
* @date 2019-06-12
*/
public class MyChannelHandlerPool {
public MyChannelHandlerPool(){}
public static ChannelGroup channelGroup = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
}
创建handler处理类
public class MyWebSocketHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
System.out.println("与客户端建立连接，通道开启！");
//添加到channelGroup通道组
MyChannelHandlerPool.channelGroup.add(ctx.channel());
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
System.out.println("与客户端断开连接，通道关闭！");
//添加到channelGroup 通道组
MyChannelHandlerPool.channelGroup.remove(ctx.channel());
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
//首次连接是FullHttpRequest，处理参数 by zhengkai.blog.csdn.net
if (null != msg && msg instanceof FullHttpRequest) {
FullHttpRequest request = (FullHttpRequest) msg;
String uri = request.uri();
Map paramMap = getUrlParams(uri);
System.out.println("接收到的参数是：" + JSON.toJSONString(paramMap));
ctx.writeAndFlush(new TextWebSocketFrame("server:"+JSON.toJSONString(paramMap)));
//如果url包含参数，需要处理
if (uri.contains("?")) {
String newUri = uri.substring(0, uri.indexOf("?"));
System.out.println(newUri);
request.setUri(newUri);
}
} else if (msg instanceof TextWebSocketFrame) {
//正常的TEXT消息类型
TextWebSocketFrame frame = (TextWebSocketFrame) msg;
System.out.println("客户端收到服务器数据：" + frame.text());
sendAllMessage(frame.text());
ctx.writeAndFlush(new TextWebSocketFrame("server:"+frame.text()));
}
super.channelRead(ctx, msg);
}
@Override
protected void channelRead0(ChannelHandlerContext channelHandlerContext, TextWebSocketFrame textWebSocketFrame) throws Exception {
}
private void sendAllMessage(String message) {
//收到信息后，群发给所有channel
MyChannelHandlerPool.channelGroup.writeAndFlush(new TextWebSocketFrame(message));
}
private static Map getUrlParams(String url) {
Map<String, String> map = new HashMap<>();
url = url.replace("?", ";");
if (!url.contains(";")) {
return map;
}
if (url.split(";").length > 0) {
String[] arr = url.split(";")[1].split("&");
for (String s : arr) {
String key = s.split("=")[0];
String value = s.split("=")[1];
map.put(key, value);
}
return map;
} else {
return map;
}
}
}
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前端socket.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Netty-Websocket</title>
<script type="text/javascript">
// by zhengkai.blog.csdn.net
var socket;
if(!window.WebSocket){
window.WebSocket = window.MozWebSocket;
}
if(window.WebSocket){
socket = new WebSocket("ws://127.0.0.1:12345/ws?uid=666&gid=777");
socket.onmessage = function(event){
var ta = document.getElementById('responseText');
ta.value += event.data+"\r\n";
};
socket.onopen = function(event){
var ta = document.getElementById('responseText');
ta.value += event.data+"\r\n";
ta.value = "Netty-WebSocket服务器。。。。。。连接 \r\n";
};
socket.onclose = function(event){
var ta = document.getElementById('responseText');
ta.value = "Netty-WebSocket服务器。。。。。。关闭 \r\n";
};
}else{
alert("您的浏览器不支持WebSocket协议！");
}
function send(message){
if(!window.WebSocket){return;}
if(socket.readyState == WebSocket.OPEN){
socket.send(message);
}else{
alert("WebSocket 连接没有建立成功！");
}
}
</script>
</head>
<body>
<form onSubmit="return false;">
<label>ID</label><input type="text" name="uid" value="${uid!!}" /> <br />
<label>TEXT</label><input type="text" name="message" value="这里输入消息" /> <br />
<br /> <input type="button" value="发送ws消息"
onClick="send(this.form.uid.value+':'+this.form.message.value)" />
<hr color="black" />
<h3>服务端返回的应答消息</h3>
<textarea id="responseText" style="width: 1024px;height: 300px;"></textarea>
</form>
</body>
</html>
