{"id":31786,"date":"2023-06-06T12:37:51","date_gmt":"2023-05-23T06:10:11","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8node-js%e5%92%8cwebsocket%e8%bf%9b%e8%a1%8c%e8%81%8a%e5%a4%a9\/"},"modified":"2024-04-30T07:35:33","modified_gmt":"2024-04-29T23:35:33","slug":"%e4%bd%bf%e7%94%a8node-js%e5%92%8cwebsocket%e8%bf%9b%e8%a1%8c%e8%81%8a%e5%a4%a9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8node-js%e5%92%8cwebsocket%e8%bf%9b%e8%a1%8c%e8%81%8a%e5%a4%a9\/","title":{"rendered":"\u4f7f\u7528Node.js\u548cWebSocket\u8fdb\u884c\u804a\u5929"},"content":{"rendered":"

\u56e0\u4e3a\u90a3\u65f6\u5019\u5bf9\u4e8eJade\u4f5c\u4e3a\u5c4f\u5e55\u6e90\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u73b0\u5728\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u804a\u5929\u3002<\/p>\n

\u56fe\u50cf<\/h5>\n
doctype html\r\nhtml(lang=\"ja\")\r\n  head\r\n  body\r\n    h1 easy chat\r\n    input(type=\"text\",id=\"message\")\r\n    button(type=\"button\",id=\"submit\") submit\r\n    ul(id=\"messageList\")\r\n\r\n<\/code><\/pre>\n
JavaScript\u670d\u52a1\u5668<\/h5>\n
var<\/span> WebSocketServer<\/span> =<\/span> require<\/span>(<\/span>'<\/span>ws<\/span>'<\/span>).<\/span>Server<\/span>;<\/span>\r\nvar<\/span> http<\/span> =<\/span> require<\/span>(<\/span>'<\/span>http<\/span>'<\/span>);<\/span>\r\nvar<\/span> express<\/span> =<\/span> require<\/span>(<\/span>'<\/span>express<\/span>'<\/span>);<\/span>\r\nvar<\/span> app<\/span> =<\/span> express<\/span>();<\/span>\r\nvar<\/span> port<\/span> =<\/span> process<\/span>.<\/span>env<\/span>.<\/span>PORT<\/span> ||<\/span> 5000<\/span>;<\/span>\r\n\r\n\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n\/\/ setting http<\/span>\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>views<\/span>\"<\/span>,<\/span> \"<\/span>src<\/span>\"<\/span>);<\/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>jade\/chat.jade<\/span>'<\/span>);<\/span>\r\n});<\/span>\r\n\r\nvar<\/span> server<\/span> =<\/span> http<\/span>.<\/span>createServer<\/span>(<\/span>app<\/span>);<\/span>\r\nserver<\/span>.<\/span>listen<\/span>(<\/span>port<\/span>);<\/span>\r\nconsole<\/span>.<\/span>log<\/span>(<\/span>\"<\/span>Node app is running at localhost:<\/span>\"<\/span> +<\/span> port<\/span>);<\/span>\r\n\r\n\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/<\/span>\r\n\/\/ setting ws<\/span>\r\n\r\nvar<\/span> wss<\/span> =<\/span> new<\/span> WebSocketServer<\/span>({<\/span>server<\/span>:<\/span>server<\/span>});<\/span>\r\nconsole<\/span>.<\/span>log<\/span>(<\/span>\"<\/span>websocket server created<\/span>\"<\/span>);<\/span>\r\n\r\nvar<\/span> connections<\/span> =<\/span> [];<\/span>\r\n\r\n\/\/ \u63a5\u7d9a\u958b\u59cb<\/span>\r\nwss<\/span>.<\/span>on<\/span>(<\/span>'<\/span>connection<\/span>'<\/span>,<\/span> function<\/span>(<\/span>ws<\/span>)<\/span> {<\/span>\r\n  console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>websocket connection open<\/span>'<\/span>);<\/span>\r\n\r\n  connections<\/span>.<\/span>push<\/span>(<\/span>ws<\/span>);<\/span>\r\n  \/**\r\n   * ws\u53d7\u4fe1\u6642\r\n   * \u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u3051\u305f\u3089\u3001\u6642\u9593\u3068userId\u3092\u4ed8\u4e0e\u3057\u3066\u3001\u63a5\u7d9a\u3057\u3066\u3044\u308b\u5168\u54e1\u306bsend\r\n   *\/<\/span>\r\n  ws<\/span>.<\/span>on<\/span>(<\/span>'<\/span>message<\/span>'<\/span>,<\/span> function<\/span>(<\/span>json<\/span>)<\/span> {<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>message is <\/span>'<\/span> +<\/span> json<\/span>);<\/span>\r\n    var<\/span> data<\/span> =<\/span> JSON<\/span>.<\/span>parse<\/span>(<\/span>json<\/span>);<\/span>\r\n    data<\/span>.<\/span>time<\/span> =<\/span> new<\/span> Date<\/span>();<\/span>\r\n    data<\/span>.<\/span>userId<\/span> =<\/span> connections<\/span>.<\/span>indexOf<\/span>(<\/span>ws<\/span>)<\/span> +<\/span> 1<\/span>;<\/span>\r\n    wss<\/span>.<\/span>clients<\/span>.<\/span>forEach<\/span>(<\/span>function<\/span>(<\/span>client<\/span>)<\/span> {<\/span>\r\n      client<\/span>.<\/span>send<\/span>(<\/span>JSON<\/span>.<\/span>stringify<\/span>(<\/span>data<\/span>));<\/span>\r\n    });<\/span>\r\n  });<\/span>\r\n\r\n  \/\/ \u30af\u30ed\u30fc\u30ba<\/span>\r\n  ws<\/span>.<\/span>on<\/span>(<\/span>'<\/span>close<\/span>'<\/span>,<\/span> function<\/span>()<\/span> {<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>websocket connection close<\/span>'<\/span>);<\/span>\r\n  });<\/span>\r\n});<\/span>\r\n<\/code><\/pre>\n
\u524d\u7aefjs<\/h5>\n
var<\/span> host<\/span> =<\/span> location<\/span>.<\/span>origin<\/span>.<\/span>replace<\/span>(<\/span>\/^http\/<\/span>,<\/span> '<\/span>ws<\/span>'<\/span>)<\/span>\r\nvar<\/span> ws<\/span> =<\/span> new<\/span> WebSocket<\/span>(<\/span>host<\/span>);<\/span>\r\n\/\/ ws\u53d7\u4fe1<\/span>\r\nws<\/span>.<\/span>onmessage<\/span> =<\/span> function<\/span>(<\/span>event<\/span>)<\/span> {<\/span>\r\n  var<\/span> data<\/span> =<\/span> JSON<\/span>.<\/span>parse<\/span>(<\/span>event<\/span>.<\/span>data<\/span>);<\/span>\r\n  switch<\/span> (<\/span>data<\/span>.<\/span>type<\/span>)<\/span> {<\/span>\r\n    \/\/ \u30e1\u30c3\u30bb\u30fc\u30b8<\/span>\r\n    case<\/span> '<\/span>message<\/span>'<\/span>:<\/span>\r\n      \/\/ \u8868\u793a\u6587\u5b57\u5217\u4f5c\u6210<\/span>\r\n      var<\/span> line<\/span> =<\/span> \"\"<\/span>;<\/span> \r\n      line<\/span> +=<\/span> data<\/span>.<\/span>time<\/span>;<\/span>\r\n      line<\/span> +=<\/span> \"<\/span> ID:<\/span>\"<\/span> +<\/span> data<\/span>.<\/span>userId<\/span>;<\/span>\r\n      line<\/span> +=<\/span> \"<\/span> \"<\/span> +<\/span> data<\/span>.<\/span>message<\/span>;<\/span>\r\n      \/\/ \u30ea\u30b9\u30c8\u8868\u793a<\/span>\r\n      $<\/span>(<\/span>'<\/span>#messageList<\/span>'<\/span>).<\/span>append<\/span>(<\/span>'<\/span><li><\/span>'<\/span> +<\/span> line<\/span> +<\/span> '<\/span><\/li><\/span>'<\/span>);<\/span>\r\n      break<\/span>;<\/span>\r\n    default<\/span>:<\/span>\r\n      break<\/span>;<\/span>\r\n  }<\/span>\r\n};<\/span>\r\n\/\/ submit\u30dc\u30bf\u30f3\u62bc\u4e0b<\/span>\r\n$<\/span>(<\/span>'<\/span>#submit<\/span>'<\/span>).<\/span>on<\/span>(<\/span>'<\/span>click<\/span>'<\/span>,<\/span> function<\/span>()<\/span> {<\/span>\r\n  var<\/span> message<\/span> =<\/span> $<\/span>(<\/span>'<\/span>#message<\/span>'<\/span>).<\/span>val<\/span>();<\/span>\r\n  if<\/span> (<\/span>message<\/span>.<\/span>length<\/span> ><\/span> 50<\/span>)<\/span> {<\/span>\r\n    return<\/span>;<\/span>\r\n  }<\/span>\r\n  ws<\/span>.<\/span>send<\/span>(<\/span>JSON<\/span>.<\/span>stringify<\/span>({<\/span>\r\n    type<\/span>:<\/span> '<\/span>message<\/span>'<\/span>,<\/span>\r\n    message<\/span>:<\/span> message<\/span>\r\n  }));<\/span>\r\n});<\/span>\r\n<\/code><\/pre>\n
\u4ee5\u4e0b\u662f\u6e90\u4ee3\u7801\uff1a
\nhttps:\/\/github.com\/yamatatsu\/node-chat<\/p>\n","protected":false},"excerpt":{"rendered":"
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