{"id":31805,"date":"2023-08-30T17:16:03","date_gmt":"2023-10-15T06:20:37","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90%e6%95%99%e7%a8%8b%e3%80%91%e4%bd%bf%e7%94%a8nodejs%e5%92%8csocketio\/"},"modified":"2024-04-30T20:47:26","modified_gmt":"2024-04-30T12:47:26","slug":"%e3%80%90%e6%95%99%e7%a8%8b%e3%80%91%e4%bd%bf%e7%94%a8nodejs%e5%92%8csocketio","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90%e6%95%99%e7%a8%8b%e3%80%91%e4%bd%bf%e7%94%a8nodejs%e5%92%8csocketio\/","title":{"rendered":"\u3010\u6559\u7a0b\u3011\u4f7f\u7528NodeJS\u548cSocketIO"},"content":{"rendered":"

\u8ba9\u6211\u4eec\u5f00\u53d1\u4e00\u4e2a\u7b80\u5355\u7684Nodejs\uff0bSocketIO\u7684AppChat\uff01
\n\u6bcf\u4e2a\u6280\u672f\u7684\u5b98\u65b9\u7f51\u7ad9\uff1a
\n– Node.js
\n– Socket.io<\/p>\n

\u4f7f\u7528\u8fc7\u7684\u6280\u672f\u7248\u672c<\/h1>\n

EJS: 2.6.1
\nExpress: 4.16.3
\nSocket.io: 2.1.1
\nJQuery: 3.3.1
\nNode.js: 10.14.1<\/p>\n

Socket.io \u7684\u4e2d\u6587\u91ca\u4e49\u662f\u5957\u63a5\u5b57.io\u3002<\/h1>\n
\"Screen<\/div>\n

\u9879\u76ee\u76ee\u5f55<\/h1>\n

\u8bf7\u5728\u7ec8\u7aef\u4e2d\u8f93\u5165npm init\u2192npm install express ejs socket.io\u6765\u5f00\u59cb\u3002
\n\u7136\u540e\uff0c\u8ba9\u6211\u4eec\u521b\u5efa\u4ee5\u4e0b\u7c7b\u4f3c\u7684\u76ee\u5f55\uff01<\/p>\n

.\r\n\u251c\u2500\u2500 public\r\n\u2502   \u251c\u2500\u2500 jquery-3.3.1.min.js\r\n\u2502   \u2514\u2500\u2500 layout.css\r\n\u2502   \u2514\u2500\u2500 main.js\r\n\u251c\u2500\u2500  views\r\n\u2502   \u2514\u2500\u2500 home.ejs\r\n\u251c\u2500\u2500 server.js\r\n\u251c\u2500\u2500 package.json\r\n<\/code><\/pre>\n
\u5728Jquery\u7684\u5b98\u65b9\u7f51\u7ad9\u4e0a\u4e0b\u8f7d\u6587\u4ef6\uff0c\u7136\u540e\u5c06\u5176\u590d\u5236\u5230\u516c\u5171\u76ee\u5f55\u3002<\/p>\n
\u7f16\u7801<\/h1>\n
body<\/span> {<\/span>\r\n    background-color<\/span>:<\/span> #e75400<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#wrapper<\/span> {<\/span>\r\n    width<\/span>:<\/span> 600px<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#username<\/span> {<\/span>\r\n    background-color<\/span>:<\/span> transparent<\/span>;<\/span>\r\n    border<\/span>:<\/span> solid<\/span> 1px<\/span> black<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#left<\/span>,<\/span> #right<\/span> {<\/span>\r\n    min-height<\/span>:<\/span> 30%<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#left<\/span> {<\/span>\r\n    width<\/span>:<\/span> 30%<\/span>;<\/span>\r\n    float<\/span>:<\/span> left<\/span>;<\/span>\r\n    background-color<\/span>:<\/span> #99d88c<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#right<\/span> {<\/span>\r\n    width<\/span>:<\/span> 70%<\/span>;<\/span>\r\n    float<\/span>:<\/span> right<\/span>;<\/span>\r\n    background-color<\/span>:<\/span> #f5f788<\/span>;<\/span>\r\n    text-align<\/span>:<\/span> right<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#box-title<\/span> {<\/span>\r\n    border<\/span>:<\/span> solid<\/span> 1px<\/span> black<\/span>;<\/span>\r\n    padding<\/span>:<\/span> 5px<\/span>;<\/span>\r\n    text-align<\/span>:<\/span> center<\/span>;<\/span>\r\n    font-weight<\/span>:<\/span> bold<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#box-content<\/span> {<\/span>\r\n    border<\/span>:<\/span> solid<\/span> 1px<\/span> black<\/span>;<\/span>\r\n    padding<\/span>:<\/span> 5px<\/span>;<\/span>\r\n    border-top<\/span>:<\/span> none<\/span>;<\/span>\r\n    text-align<\/span>:<\/span> center<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#list-message<\/span> {<\/span>\r\n    height<\/span>:<\/span> 200px<\/span>;<\/span>\r\n    background-color<\/span>:<\/span> #fcb3f0<\/span>;<\/span>\r\n    margin-bottom<\/span>:<\/span> 15px<\/span>;<\/span>\r\n    overflow-y<\/span>:<\/span> scroll<\/span>;<\/span>\r\n    resize<\/span>:<\/span> none<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#message<\/span> {<\/span>\r\n    width<\/span>:<\/span> 85%<\/span>;<\/span>\r\n}<\/span>\r\n\r\n#send-message<\/span> {<\/span>\r\n    width<\/span>:<\/span> 13%<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
var<\/span> express<\/span> =<\/span> require<\/span>(<\/span>'<\/span>express<\/span>'<\/span>);<\/span>\r\n\r\n\r\nvar<\/span> app<\/span> =<\/span> express<\/span>();<\/span>\r\n\r\napp<\/span>.<\/span>use<\/span>(<\/span>express<\/span>.<\/span>static<\/span>(<\/span>'<\/span>.\/public<\/span>'<\/span>));<\/span>\r\napp<\/span>.<\/span>set<\/span>(<\/span>'<\/span>view engine<\/span>'<\/span>,<\/span> '<\/span>ejs<\/span>'<\/span>);<\/span>\r\napp<\/span>.<\/span>set<\/span>(<\/span>'<\/span>views<\/span>'<\/span>,<\/span> '<\/span>.\/views<\/span>'<\/span>);<\/span>\r\n\r\nvar<\/span> server<\/span> =<\/span> require<\/span>(<\/span>'<\/span>http<\/span>'<\/span>).<\/span>Server<\/span>(<\/span>app<\/span>);<\/span>\r\nvar<\/span> io<\/span> =<\/span> require<\/span>(<\/span>'<\/span>socket.io<\/span>'<\/span>)(<\/span>server<\/span>);<\/span>\r\nserver<\/span>.<\/span>listen<\/span>(<\/span>process<\/span>.<\/span>env<\/span>.<\/span>PORT<\/span> ||<\/span> 3000<\/span>);<\/span>\r\n\r\nvar<\/span> arrayUser<\/span> =<\/span> [];<\/span>\r\n\r\nio<\/span>.<\/span>on<\/span>(<\/span>'<\/span>connection<\/span>'<\/span>,<\/span> function<\/span>(<\/span>socket<\/span>)<\/span> {<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>Client <\/span>'<\/span> +<\/span> socket<\/span>.<\/span>id<\/span> +<\/span> '<\/span> connected<\/span>'<\/span>);<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>client-send-username<\/span>'<\/span>,<\/span> function<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\r\n        if<\/span>(<\/span>arrayUser<\/span>.<\/span>indexOf<\/span>(<\/span>data<\/span>)<\/span> >=<\/span> 0<\/span>)<\/span> {<\/span>\r\n            socket<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>server-send-fail<\/span>'<\/span>);<\/span>\r\n        }<\/span> else<\/span> {<\/span>\r\n            arrayUser<\/span>.<\/span>push<\/span>(<\/span>data<\/span>);<\/span>\r\n            socket<\/span>.<\/span>username<\/span> =<\/span> data<\/span>;<\/span>\r\n            socket<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>server-send-success<\/span>'<\/span>,<\/span> data<\/span>);<\/span>\r\n            io<\/span>.<\/span>sockets<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>server-send-array-user<\/span>'<\/span>,<\/span> arrayUser<\/span>);<\/span>\r\n        }<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>logout<\/span>'<\/span>,<\/span> function<\/span>()<\/span> {<\/span>\r\n        arrayUser<\/span>.<\/span>splice<\/span>(<\/span>arrayUser<\/span>.<\/span>indexOf<\/span>(<\/span>socket<\/span>.<\/span>username<\/span>),<\/span> 1<\/span>);<\/span>\r\n        socket<\/span>.<\/span>broadcast<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>server-send-array-user<\/span>'<\/span>,<\/span> arrayUser<\/span>);<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>user-send-message<\/span>'<\/span>,<\/span> function<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\r\n        io<\/span>.<\/span>sockets<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>server-send-message<\/span>'<\/span>,<\/span> {<\/span>\r\n            username<\/span>:<\/span> socket<\/span>.<\/span>username<\/span>,<\/span>\r\n            message<\/span>:<\/span> data<\/span>\r\n        });<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>user-typing-message<\/span>'<\/span>,<\/span> function<\/span>()<\/span> {<\/span>\r\n        socket<\/span>.<\/span>broadcast<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>server-send-typing<\/span>'<\/span>,<\/span> socket<\/span>.<\/span>username<\/span>);<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>user-stop-typing-message<\/span>'<\/span>,<\/span> function<\/span>()<\/span> {<\/span>\r\n        socket<\/span>.<\/span>broadcast<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>server-send-stop-typing<\/span>'<\/span>,<\/span> socket<\/span>.<\/span>username<\/span>);<\/span>\r\n    })<\/span>\r\n})<\/span>\r\n\r\napp<\/span>.<\/span>get<\/span>(<\/span>'<\/span>\/<\/span>'<\/span>,<\/span> function<\/span>(<\/span>req<\/span>,<\/span> res<\/span>)<\/span> {<\/span>\r\n    res<\/span>.<\/span>render<\/span>(<\/span>'<\/span>home<\/span>'<\/span>);<\/span>\r\n})<\/span>\r\n<\/code><\/pre>\n
\u53ea\u6709\u628a\u6240\u6709socket.io\u5904\u7406\u7684\u4ee3\u7801\u653e\u8fdbio.on\u51fd\u6570\u5185\uff0c\u4ee3\u7801\u624d\u80fd\u8fd0\u884c\u3002<\/p>\n
<!DOCTYPE html>\r\n<html>\r\n<head>\r\n    <meta charset=\"utf-8\">\r\n    <title> Demo chat app <\/title>\r\n    <script type=\"text\/javascript\" src=\"jquery-3.3.1.min.js\"><\/script>\r\n    <script type=\"text\/javascript\" src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/socket.io\/2.1.1\/socket.io.js\"><\/script>\r\n    <script type=\"text\/javascript\" src=\"main.js\"><\/script>\r\n    <link rel=\"stylesheet\" type=\"text\/css\" href=\"layout.css\">\r\n<\/head>\r\n<body>\r\n    <div id=\"wrapper\">\r\n        <div id=\"login-form\">\r\n            <h3> What is your name ? <\/h3>\r\n            <input type=\"text\" id=\"username\" name=\"username\" >\r\n            <input type=\"button\" value=\"Register\" id=\"register\" >\r\n        <\/div>\r\n        <div id=\"chat-form\">\r\n            <div id=\"left\">\r\n                <div id=\"box-title\">\r\n                    Online Users\r\n                <\/div>\r\n                <div id=\"box-content\">\r\n\r\n                <\/div>\r\n            <\/div>\r\n            <div id=\"right\">\r\n                <div id=\"welcome\">\r\n                    Hello <span id=\"current-user\">  <\/span>\r\n                    <input type=\"button\" id=\"logout\" name=\"\" value=\"Logout\">\r\n                <\/div>\r\n                <div id=\"list-message\" scrollable>\r\n\r\n                <\/div>\r\n                <div id=\"input-message\">\r\n                    <input type=\"text\" id=\"message\" name=\"\" placeholder=\"Input message here\">\r\n                    <input type=\"button\" id=\"send-message\" name=\"\" value=\"Send\">\r\n                <\/div>\r\n            <\/div>\r\n        <\/div>   \r\n    <\/div>\r\n<\/body>\r\n<\/html>\r\n<\/code><\/pre>\n
\u4e3a\u4e86\u5728main.js\u4e2d\u4f7f\u7528socket.io\uff0c\u5728home.ejs\u4e2d\u9700\u8981\u5305\u542bsocket.io\u7684CDN\u94fe\u63a5\u3002<\/p>\n
var<\/span> socket<\/span> =<\/span> io<\/span>(<\/span>'<\/span>http:\/\/localhost:3000<\/span>'<\/span>);<\/span>\r\n\r\n$<\/span>(<\/span>document<\/span>).<\/span>ready<\/span>(<\/span>function<\/span>()<\/span> {<\/span>\r\n    $<\/span>(<\/span>'<\/span>#login-form<\/span>'<\/span>).<\/span>show<\/span>();<\/span>\r\n    $<\/span>(<\/span>'<\/span>#chat-form<\/span>'<\/span>).<\/span>hide<\/span>();<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>server-send-fail<\/span>'<\/span>,<\/span> function<\/span>()<\/span> {<\/span>\r\n        alert<\/span>(<\/span>'<\/span>The username is already exists !<\/span>'<\/span>);<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>server-send-success<\/span>'<\/span>,<\/span> function<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\r\n        console<\/span>.<\/span>log<\/span>(<\/span>data<\/span>);<\/span>\r\n        $<\/span>(<\/span>'<\/span>#current-user<\/span>'<\/span>).<\/span>html<\/span>(<\/span>data<\/span>);<\/span>\r\n        $<\/span>(<\/span>'<\/span>#login-form<\/span>'<\/span>).<\/span>hide<\/span>(<\/span>2000<\/span>);<\/span>\r\n        $<\/span>(<\/span>'<\/span>#chat-form<\/span>'<\/span>).<\/span>show<\/span>(<\/span>1000<\/span>);<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>server-send-array-user<\/span>'<\/span>,<\/span> function<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\r\n        $<\/span>(<\/span>'<\/span>#box-content<\/span>'<\/span>).<\/span>html<\/span>(<\/span>''<\/span>);<\/span>\r\n        data<\/span>.<\/span>forEach<\/span>(<\/span>function<\/span>(<\/span>username<\/span>)<\/span> {<\/span>\r\n            $<\/span>(<\/span>'<\/span>#box-content<\/span>'<\/span>).<\/span>append<\/span>(<\/span>'<\/span><div class=\"user-online\"> <\/span>'<\/span> +<\/span> username<\/span> +<\/span> '<\/span><\/div><\/span>'<\/span>);<\/span>\r\n        });<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>server-send-message<\/span>'<\/span>,<\/span> function<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\r\n        $<\/span>(<\/span>'<\/span>#list-message<\/span>'<\/span>).<\/span>append<\/span>(<\/span>'<\/span><div><\/span>'<\/span> +<\/span> data<\/span>.<\/span>username<\/span> +<\/span> '<\/span>: <\/span>'<\/span> +<\/span> data<\/span>.<\/span>message<\/span> +<\/span> '<\/span><\/div><\/span>'<\/span>);<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>server-send-typing<\/span>'<\/span>,<\/span> function<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\r\n        $<\/span>(<\/span>'<\/span>#list-message<\/span>'<\/span>).<\/span>append<\/span>(<\/span>'<\/span><div id=\"<\/span>'<\/span> +<\/span> data<\/span> +<\/span> '<\/span>\"><\/span>'<\/span> +<\/span> data<\/span> +<\/span> '<\/span> is typing message ... <\/div><\/span>'<\/span>);<\/span>\r\n    });<\/span>\r\n\r\n    socket<\/span>.<\/span>on<\/span>(<\/span>'<\/span>server-send-stop-typing<\/span>'<\/span>,<\/span> function<\/span>(<\/span>data<\/span>)<\/span> {<\/span>\r\n        $<\/span>(<\/span>'<\/span>#<\/span>'<\/span>+<\/span>data<\/span>).<\/span>remove<\/span>();<\/span>\r\n    });<\/span>\r\n\r\n    $<\/span>(<\/span>'<\/span>#register<\/span>'<\/span>).<\/span>click<\/span>(<\/span>function<\/span>()<\/span> {<\/span>\r\n        socket<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>client-send-username<\/span>'<\/span>,<\/span> $<\/span>(<\/span>'<\/span>#username<\/span>'<\/span>).<\/span>val<\/span>());<\/span>\r\n    });<\/span>\r\n\r\n    $<\/span>(<\/span>'<\/span>#logout<\/span>'<\/span>).<\/span>click<\/span>(<\/span>function<\/span>()<\/span> {<\/span>\r\n        socket<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>logout<\/span>'<\/span>);<\/span>\r\n        $<\/span>(<\/span>'<\/span>#login-form<\/span>'<\/span>).<\/span>show<\/span>(<\/span>1000<\/span>);<\/span>\r\n        $<\/span>(<\/span>'<\/span>#chat-form<\/span>'<\/span>).<\/span>hide<\/span>(<\/span>2000<\/span>);<\/span>\r\n    });<\/span>\r\n\r\n    $<\/span>(<\/span>'<\/span>#send-message<\/span>'<\/span>).<\/span>click<\/span>(<\/span>function<\/span>()<\/span> {<\/span>\r\n        socket<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>user-send-message<\/span>'<\/span>,<\/span> $<\/span>(<\/span>'<\/span>#message<\/span>'<\/span>).<\/span>val<\/span>());<\/span>\r\n    });<\/span>\r\n\r\n    $<\/span>(<\/span>'<\/span>#message<\/span>'<\/span>).<\/span>focus<\/span>(<\/span>function<\/span>()<\/span> {<\/span>\r\n        socket<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>user-typing-message<\/span>'<\/span>);<\/span>\r\n    });<\/span>\r\n\r\n    $<\/span>(<\/span>'<\/span>#message<\/span>'<\/span>).<\/span>focusout<\/span>(<\/span>function<\/span>()<\/span> {<\/span>\r\n        socket<\/span>.<\/span>emit<\/span>(<\/span>'<\/span>user-stop-typing-message<\/span>'<\/span>);<\/span>\r\n    });<\/span>\r\n})<\/span>\r\n<\/code><\/pre>\n
\u91cd\u8981\u4e8b\u4ef6
\n1. \u5ba2\u6237\u7aef\u53d1\u9001\u7528\u6237\u540d\uff1a\u70b9\u51fb”\u6ce8\u518c”\u6309\u94ae\u540e\uff0c\u5c06\u53d1\u51fa\u4e8b\u4ef6\u3002
\n– \u670d\u52a1\u5668\u53d1\u9001\u6210\u529f\uff1a\u5982\u679c\u6ce8\u518c\u7684\u540d\u79f0\u4e0d\u5b58\u5728\u3002
\n– \u670d\u52a1\u5668\u53d1\u9001\u5931\u8d25\uff1a\u5982\u679c\u6ce8\u518c\u7684\u540d\u79f0\u5df2\u5b58\u5728\u3002
\n2. \u6ce8\u9500\uff1a\u53d1\u9001\u4e8b\u4ef6\u4ee5\u8fdb\u884c\u767b\u51fa\u3002
\n3. \u7528\u6237\u53d1\u9001\u6d88\u606f\u3002
\n4. \u7528\u6237\u6b63\u5728\u8f93\u5165\u6d88\u606f\u3002
\n5. \u7528\u6237\u505c\u6b62\u8f93\u5165\u6d88\u606f\u3002<\/p>\n
\u7ed3\u679c (ji\u00e9 gu\u01d2)<\/h1>\n
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