如果你要有一个支持 WebSocket的服务器(Java、Php等),可以在浏览器中使用一个新的WebSocket服务协议,来打开一个链接: - <font color="rgb(0, 0, 136)">var</font> socket = <font color="rgb(0, 0, 136)">new</font> WebSocket(<font color="rgb(0, 153, 0)">"ws://172.0.0.1:8080/SpringWebSocketPush/websck"</font>);
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8 a" Z, `3 {$ ]! L与http://这一URL 前缀等价的WebSocket 前缀 是 ws:// ,安全 WebSocket 则有一个与http://等价的 wss:// 前缀。 2 o! Q, S6 I3 C! Q0 C% L, ~
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该套接口对象有四个用来监听套接口事件的回调: - socket.onopen = function(){
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" e7 t4 i' X2 D' j1 [! ~- //打开
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- socket.onmessage = function(){& W# K& J0 b! A5 |, Z$ u7 L
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- //在event.data消息数据
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p5 }; Q4 O, F0 a2 l9 V5 Y- //关闭WebSocket% D L" G/ }/ Z& }, G8 \
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+ r6 o; D7 B' F# M! V6 I- socket.onerror = function(){- }% U* Q" O& g1 }
/ {1 s0 C- ~7 t6 g- //错误触发
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通过套接口发送数据,调用socket.send: - <font color="rgb(79, 79, 79)">socket</font>.<font color="rgb(79, 79, 79)">send</font>(message)
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& V$ O8 j( z# ^# ^6 W8 V代码附上: - <!DOCTYPE html>, w: c" \ W) N, J, ?' Z( `
- <html>
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- <head>
5 `) F! c; T8 f6 s# Q2 r - <meta charset="UTF-8">
& e6 W& {9 e7 i! G - <meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" name="viewport"> z' [3 k {- K+ \7 k/ k- `3 k
- <title>WebSocket</title>
2 [0 p) N7 v% G- p O9 q - </head>
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( Y) v% E i( `. q* r- <body>8 _; p4 |+ {6 l0 z
- </body>8 w x) h: l6 A* [9 v0 U
- <script>
7 E. k2 G1 @7 E ]% U3 m - var socket;
0 ^8 U% X9 G' J+ b. Z; u, } - if (window.WebSocket) {
; m9 R s( T. C' \: l% V& p - socket = new WebSocket("ws://localhost:8080/myapp");5 z8 S' Z8 q0 M) C7 u
- socket.onmessage = function(event) {* s6 F2 P" q: t
- alert("Received data from websocket: " + event.data);
5 j+ e/ O( Q! b2 U$ r5 L8 Z - }
9 j& a+ b9 X9 B2 C+ ~2 c6 f - socket.onopen = function(event) {
# j; G/ X! X: I! B$ T - alert("Web Socket opened!");7 U; s1 U# C% G! R3 m) Y% Z
- };
" x1 b) K* d% I2 x1 B( ` - socket.onclose = function(event) {
1 Y( t* W$ m4 o7 W9 X9 ^ - alert("Web Socket closed.");
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. G8 ^9 p. L! `* h: l - } else {
' \ O& X' }, n! ?. w) J0 o - alert("Your browser does not support Websockets. (Use Chrome)");
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- function send(message) {
/ s& I1 k( F% P ] _' K: s. Y& z - if (!window.WebSocket) {
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- if (socket.readyState == WebSocket.OPEN) {2 D9 v( m. t5 y2 S
- socket.send(message);9 c6 }1 R& H2 ~% d% w
- } else {0 I* Q2 s: H+ \: j+ \
- alert("The socket is not open.");$ y4 V) o& b3 _9 k7 m* X/ v% b5 P- d
- }
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- e9 M7 Q" j% `) x( b$ ?4 [ - </script>
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- </html>
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