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>);
复制代码1 k; R7 ^: a7 x# x. p# B. 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。
% g* h" V; {7 n' T/ @+ n( K. v: R% z, V E
- [6 `: p: l6 }6 F该套接口对象有四个用来监听套接口事件的回调: - socket.onopen = function(){. S# M5 y5 ?. F; o+ Z
- ! e, F0 R8 p9 R8 H
- //打开
+ i* Z; h, D( | i - 9 z- D9 s2 y9 Z; Q1 Z) {+ _4 G
- }! a% S5 Z0 \& w% F: e+ O" y
- % Q' `; {" b5 `% z
- " Q" P# u$ R5 J0 d$ E8 _
- socket.onmessage = function(){" Y. o# Q. n; w) k0 [$ p4 Q
- 4 T# J& v' N" s ~
- //在event.data消息数据& N6 s8 ^: E* h. I- k6 M6 P; _
- 6 k& d0 G# g/ B- A) M: m
- }
4 T" r- ^' y: `7 j
- _2 ~' N0 q" \! D; @- |- socket.onclose = function(){
6 U1 z2 p# X& h3 {8 M! s - ; d6 r* n% J5 A4 H. L
- //关闭WebSocket& _5 L! D0 h a: L) N: M: H
- 2 n9 ^' U' M) s# e. U
- }
i5 L I$ D4 }% D# h" h1 u
- c( h. J; g% |( H: h- socket.onerror = function(){
& ~1 L9 n0 p+ p - + I5 u9 O1 S3 y
- //错误触发/ e& b r8 I! P
- , ^' g0 x8 G! R8 S1 A0 l
- }
复制代码
( P" r7 p' g' }# a1 E4 M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)
复制代码
' \! C* v" [3 ^$ v
8 M* m- L' h% }& F q代码附上: - <!DOCTYPE html>
4 K0 D: _! B; {+ T8 V - <html>' [3 v" m, B' O. b& }) a
" h8 \# c8 n( l2 W* l; b5 n- <head>
4 g; q5 Q2 Y3 O8 i! I/ H - <meta charset="UTF-8">+ O+ q# y$ t' ]! Q4 r& {
- <meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" name="viewport">
' {* ~4 g9 u" {+ d7 g$ p; J - <title>WebSocket</title>& q% o2 ?0 T, N) L- B; m/ |# {" U
- </head>2 {; F7 x4 K4 {- ?4 Y& \% J$ r
5 V! b0 X8 k: y" Q }. D- <body>$ A6 {" X% Z; m& Q/ i- w+ n7 C
- </body> o, u7 m$ k6 Q. e }# F0 Z
- <script>
# f2 G1 O- @6 [) G9 X - var socket;
( G( H9 D" j0 a. Y$ Z, E6 ^/ v9 Y* }+ l - if (window.WebSocket) {
1 t8 M7 t8 M7 R% g0 ? - socket = new WebSocket("ws://localhost:8080/myapp");: M X+ A2 R& n3 T
- socket.onmessage = function(event) {6 s7 _* h0 ^0 F* k
- alert("Received data from websocket: " + event.data);
* v- L# t+ O7 j; z - }) s7 a; i/ ~) _4 ^- i
- socket.onopen = function(event) {
; f; u z8 _# f+ p - alert("Web Socket opened!");
4 ~# b& |" L0 N7 f1 w; Y j4 u$ i - };
" C$ h' H3 h0 B9 `/ a - socket.onclose = function(event) {
4 x. f9 t: M" _2 N& J - alert("Web Socket closed.");
J- T8 `; s- t! ~( C - };, g% w u w& u) ?
- } else {# y! |& D, ?3 V& c4 c, k
- alert("Your browser does not support Websockets. (Use Chrome)");
3 T; P e6 p3 f - }: E5 p. {+ G1 A) Q/ E
- ' ~( o0 f0 y) A+ t. x* b4 c( j+ d% v$ W
- function send(message) {
5 M, q3 L4 b8 A' V& n& D) p - if (!window.WebSocket) {. n4 J; e$ y' z9 d' Q9 t' [
- return;) U, E% N0 Y0 h5 [3 N7 m# p
- }5 |2 J$ W3 t; R- @
- if (socket.readyState == WebSocket.OPEN) {
+ w6 v L L7 J! I# N C1 d - socket.send(message);2 I0 Y2 }4 T. G0 o
- } else {1 r/ i6 _3 z5 N* t, e5 O
- alert("The socket is not open.");
" S8 h; y3 D& K* M( |* @ - }
% u7 o8 k! r6 B& i y - }3 }. |' J& u4 D% n; i7 X
- </script>
% X( _# G0 c; u( X0 j# g/ f U% c - 7 N/ h, S/ F# l3 W
- </html>
复制代码
6 j' }- \2 A! U' B- n1 a) m- V
. E2 P6 J$ G* n! W% {1 B4 i! W$ b5 T |