最新的效果如下面:
微信截图_20210618170108.png
前言
接webSocket 练习进行留下来demo,之前ui 进行的修改。
用netty 做了socket 的功能。
html 界面 代码
netty
<p>登录</p>
<input type="text" id="userinfo"/>
<input type="button" value="登录" onclick="CHAT.login()"/>
<div>发送消息:</div>
发送给谁
<input type="text" id="receivername"/>
发送内容
<input type="text" id="msgContent"/>
<input type="button" value="点我发送" onclick="CHAT.chat()"/>
<div>接受消息:</div>
<div id="receiveMsg" style="background-color: gainsboro;"></div>
<script type="application/javascript">
window.CHAT = {
socket: null,
init: function () {
if (window.WebSocket) {
CHAT.socket = new WebSocket("ws://192.168.1.191:8088/ws");
CHAT.socket.onopen = function () {
console.log("连接建立成功...");
},
CHAT.socket.onclose = function () {
console.log("连接关闭...");
},
CHAT.socket.onerror = function () {
console.log("发生错误...");
},
CHAT.socket.onmessage = function (e) {
console.log("接受到消息:" + e.data);
var receiveMsg = document.getElementById("receiveMsg");
var html = receiveMsg.innerHTML;
receiveMsg.innerHTML = html + "<br/>" + e.data;
}
} else {
alert("浏览器不支持websocket协议...");
}
},
chat: function () {
var userinfo = document.getElementById("userinfo");
var msg = document.getElementById("msgContent");
var receivername = document.getElementById("receivername");
var txt = "{" +
"\"active\":1," +
"\"username\":\"" + userinfo.value + "\"," +
"\"receivername\":\"" + receivername.value + "\"," +
"\"msg\":\"" + msg.value + "\"" +
"}"
CHAT.socket.send(txt);
},
login: function () {
var userinfo = document.getElementById("userinfo");
var txt = "{" +
"\"active\":0," +
"\"username\":\"" + userinfo.value + "\"," +
"\"receivername\":\"\"," +
"\"msg\":\"\"" +
"}"
CHAT.socket.send(txt);
}
};
CHAT.init();
</script>
</body>
</html>
只有登录和发送两个状态
private int active; // 0 是登录1 是发送
点击和发送 功能 就是json 之间传输就可以了。。
后台代码
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
</dependency>
spring boot 项目,创建一个新的就行。
netty 需要自己启动。。
所以写了一个自己启动功能
@Component
//如果有多个runner需要指定一些顺序
@Order(1)
public class NettyRunner implements ApplicationRunner {
@Override
public void run(ApplicationArguments args) throws Exception {
System.out.println("netty 启动了...");
/*websocket 中使用 需要启动这个*/
WSServer.WSServerRun();
}
}
发送给用户主要是
channel.writeAndFlush(
new TextWebSocketFrame(content));
获取保留channel 来发送 消息的。json 数据或其他类型 数据流转的。
发送主要的方法
@Override
protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg)
throws Exception {
// 获取客户端传输过来的消息
String content = msg.text();
Channel channel = ctx.channel();
System.out.println("接受到的数据:" + content);
// 1. 获取客户端发来的消息
UserLogin userLogin = JsonUtils.jsonToPojo(content, UserLogin.class);
if (userLogin == null) {
return;
}
int active = userLogin.getActive();
switch (active) {
case 0:
UserChannelUtils.put(userLogin.getUsername(), channel);
UserChannelUtils.sendMessage(channel,
"[服务器在]" + LocalDateTime.now()
+ "接受到消息, 登录成功");
break;
case 1:
Channel channel1 = UserChannelUtils.get(userLogin.getReceivername());
if (channel1 == null) {
UserChannelUtils.sendMessage(channel,
"[服务器在]" + LocalDateTime.now()
+ "您的好友没有登录");
} else {
UserChannelUtils.sendMessage(channel,
"[服务器在]" + LocalDateTime.now()
+ "发送成功");
UserChannelUtils.sendMessage(channel1,
"[服务器在]" + LocalDateTime.now()
+ "您的好友" + userLogin.getUsername() + "给您发送内容是:" + userLogin.getMsg());
}
break;
}
}
后台效果
微信截图_20210618172237.png
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