{"id":601,"date":"2021-02-26T17:26:47","date_gmt":"2021-02-26T08:26:47","guid":{"rendered":"http:\/\/www.opentone.co.jp\/ot-lab\/?p=601"},"modified":"2025-05-12T10:06:21","modified_gmt":"2025-05-12T01:06:21","slug":"%e3%80%90html5%e3%80%91websocket%e3%81%a8java%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%81%ae%e3%81%94%e7%b4%b9%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/www.opentone.co.jp\/ot-lab\/all\/web-system\/%e3%80%90html5%e3%80%91websocket%e3%81%a8java%e3%82%b5%e3%83%b3%e3%83%97%e3%83%ab%e3%83%97%e3%83%ad%e3%82%b0%e3%83%a9%e3%83%a0%e3%81%ae%e3%81%94%e7%b4%b9%e4%bb%8b","title":{"rendered":"\u3010HTML5\u3011WebSocket\u3068Java\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u3054\u7d39\u4ecb"},"content":{"rendered":"\n<p>\u7686\u69d8\u3053\u3093\u306b\u3061\u306f\u3002t.i.\u3067\u3054\u3056\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30bf\u30a4\u30c8\u30eb\u306eWebSocket\u3068\u306f\u3001HTML5\u306e\u76ee\u7389\u3067\u3042\u308b\u6700\u8fd1\u8003\u3048\u3089\u308c\u305f\u901a\u4fe1\u898f\u683c\u306e\u4e00\u3064\u3067\u3059\u3002<br>(\u53b3\u5bc6\u8a00\u3046\u3068\u3001\u4eca\u306f\u3082\u3046HTML5\u304b\u3089\u5207\u308a\u96e2\u3055\u308c\u305f\u4e00\u3064\u306e\u898f\u683c\u3068\u3057\u3066\u691c\u8a0e\u304c\u9032\u3093\u3067\u3044\u307e\u3059)<br>\u4eca\u56de\u306e\u8a18\u4e8b\u3067\u306f\u3001\u6700\u521d\u306b\u65e2\u5b58\u306e\u901a\u4fe1\u898f\u683cHTTP\u3068WebSocket\u306e\u9055\u3044\u3092\u7c21\u5358\u306b\u8aac\u660e\u3057\u305f\u5f8c\u3001JavaScript\u3068Java(Tomcat)\u306b\u3088\u308b\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u3054\u7d39\u4ecb\u81f4\u3057\u307e\u3059\u3002<br>(\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001Eclipse\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4e00\u5f0f\u3092zip\u306b\u307e\u3068\u3081\u305f\u3082\u306e\u304c\u7528\u610f\u3057\u3066\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u76f4\u3050\u306b\u81ea\u5206\u306e\u74b0\u5883\u3067\u8a66\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u305d\u306e1 HTTP\u3068WebSocket\u306e\u9055\u3044<\/h3>\n\n\n\n<p>HTTP\u3068WebSocket\u306e\u5927\u304d\u306a\u9055\u3044\u306f\u300e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057(\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30b5\u30fc\u30d0\u304b\u3089\u306e\u60c5\u5831\u3092\u5373\u5ea7\u306b\u53d7\u3051\u53d6\u308c\u308b)\u300f\u304b\u5426\u304b\u3068\u3001\u53cc\u65b9\u5411\u30c7\u30fc\u30bf\u901a\u4fe1\u304c\u53ef\u80fd\u304b\u5426\u304b\u3067\u3059\u3002<br>\u3053\u306e\u300e\u7e4b\u304e\u3063\u3071\u306a\u3057\u300f\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7684\u30fb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u7684\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u6b63\u3057\u304f\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u7c21\u5358\u306b\u3054\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057<\/h4>\n\n\n\n<p>HTTP\u3067\u306f\u300c\u901a\u4fe1\u8def\u4f5c\u6210 \u2192 \u8981\u6c42(\u30d5\u30a1\u30a4\u30eb\u304f\u3060\u3055\u3044) \u2192 \u5fdc\u7b54(\u3069\u3046\u305e) \u2192 \u901a\u4fe1\u8def\u524a\u9664\u300d\u3092\u4f55\u5ea6\u3082\u7e70\u308a\u8fd4\u3057\u3066\u3044\u307e\u3057\u305f\u3002<br>\u305f\u3060\u3057\u901a\u4fe1\u8def\u4f5c\u6210\u306f\u30b3\u30b9\u30c8\u306e\u9ad8\u3044\u4f5c\u696d\u306a\u306e\u3067\u3001\u5f8c\u306b\u4e00\u3064\u306e\u901a\u4fe1\u8def\u3092\u4f7f\u3044\u307e\u308f\u3059\u65b9\u6cd5\u304c\u51fa\u3066\u6765\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"874\" height=\"369\" src=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01.png\" alt=\"\" class=\"wp-image-603\" srcset=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01.png 874w, https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-300x127.png 300w, https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-768x324.png 768w\" sizes=\"(max-width: 874px) 100vw, 874px\" \/><\/figure><\/div>\n\n\n\n<p><br>\u56f31. \u300e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057\u300f\u306e\u6bd4\u8f03<\/p>\n\n\n\n<p>\u53f3\u304c\u300e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057\u300f\u3067\u3059\u3002<br>\u5177\u4f53\u7684\u306b\u306f\u300cHTTP Keep-Alive\u300d\u3092\u4f7f\u3046\u3053\u3068\u3067\u5b9f\u73fe\u3057\u3066\u3044\u3066\u3001\u307b\u307c\u5168\u3066\u306e\u30d6\u30e9\u30a6\u30b6\u30fb\u30b5\u30fc\u30d0\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<br>\u30e1\u30ea\u30c3\u30c8\u306f\u3001\u5c0f\u3055\u3044\u8981\u6c42\/\u5fdc\u7b54\u304c\u4f55\u5ea6\u3082\u767a\u751f\u3059\u308b\u5834\u5408\u306e\u51e6\u7406\u304c\u65e9\u304f\u306a\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057<\/h4>\n\n\n\n<p>\u3053\u3061\u3089\u304c\u4eca\u56de\u306e\u30e1\u30a4\u30f3\u3067\u3059\u3002<br>\u308f\u304b\u308a\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u306b\u3001\u30c1\u30e3\u30c3\u30c8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3(\u8907\u6570\u4eba\u304c\u540c\u6642\u306b\u304a\u3057\u3083\u3079\u308a)\u3092\u4f8b\u3068\u3057\u3066\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>\u3053\u3053\u3067\u8a00\u3046\u300e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057\u300f\u306f\u3001\u300e\u4ed6\u306e\u4eba\u306e\u767a\u8a00\u304c\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u5206\u304b\u308b\u300f\u3092\u30a4\u30e1\u30fc\u30b8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"880\" height=\"481\" src=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig02.png\" alt=\"\" class=\"wp-image-604\" srcset=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig02.png 880w, https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig02-300x164.png 300w, https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig02-768x420.png 768w\" sizes=\"(max-width: 880px) 100vw, 880px\" \/><\/figure><\/div>\n\n\n\n<p><br>\u56f32. \u300e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057\u300f\u306e\u6bd4\u8f03<\/p>\n\n\n\n<p>\u53f3\u304c\u300e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057\u300f\u3067\u3059\u3002<br>\u4e00\u822c\u7684\u306b\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308bAjax\u3067\u306f\u3001\u5de6\u306e\u3088\u3046\u306b\u5b9a\u671f\u7684\u306b\u767a\u8a00\u304c\u3042\u3063\u305f\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<br>\u5b9f\u969b\u306b\u306f\u3053\u306e\u78ba\u8a8d\u9593\u9694\u3092\u975e\u5e38\u306b\u77ed\u304f\u3059\u308b\u3053\u3068\u3067\u3001\u307b\u307c\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u767a\u8a00\u6709\u7121\u3092\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>Comet\u3068\u547c\u3070\u308c\u308b\u53f3\u306e\u624b\u6cd5\u3067\u306f\u3001\u5fc5\u8981\u306a\u6642\u307e\u3067\u5fdc\u7b54\u3092\u8fd4\u3055\u305a\u306b\u3060\u3093\u307e\u308a\u3092\u6c7a\u3081\u8fbc\u307f\u307e\u3059\u3002<br>\u767a\u8a00\u304c\u3042\u3063\u305f\u6642\u306b\u521d\u3081\u3066\u5fdc\u7b54\u3092\u8fd4\u3057\u307e\u3059\u306e\u3067\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u767a\u8a00\u304c\u3042\u3063\u305f\u3053\u3068\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3057\u3066\u3001\u4eca\u56de\u7d39\u4ecb\u3059\u308bWebSocket\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f62\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"685\" height=\"418\" src=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig03.png\" alt=\"\" class=\"wp-image-605\" srcset=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig03.png 685w, https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig03-300x183.png 300w\" sizes=\"(max-width: 685px) 100vw, 685px\" \/><\/figure><\/div>\n\n\n\n<p><br>\u56f33. WebSocket\u306e\u4f8b<\/p>\n\n\n\n<p>\u5fdc\u7b54\u3092\u8fd4\u3057\u305f\u5f8c\u306f\u3001\u300c\u3044\u3064\u3067\u3082\u5373\u5ea7\u306b\u767a\u8a00(\u30c7\u30fc\u30bf)\u3092\u6295\u3052\u3089\u308c\u308b\u3057\u53d7\u3051\u53d6\u308c\u308b\u300d\u3068\u3044\u3046\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002<br>\u5373\u5ea7\u306b\u5909\u66f4(\u767a\u8a00\u304c\u3042\u3063\u305f\u3053\u3068)\u3092\u77e5\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u300e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u7684\u306b\u7e4b\u304e\u3063\u3071\u306a\u3057\u300f\u3068\u3044\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u3053\u306eWebSocket\u304c\u524d\u8ff0\u306eComet\u3068\u7279\u306b\u7570\u306a\u3063\u3066\u3044\u308b\u306e\u306f\u4ee5\u4e0b2\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5fdc\u7b54\u3092\u8fd4\u3057\u305f\u5f8c\u306f\u3001\u8981\u6c42\/\u5fdc\u7b54\u3068\u306f\u5168\u304f\u7570\u306a\u308b\u5f62\u3067\u30c7\u30fc\u30bf\u3092\u3084\u308a\u53d6\u308a\u3059\u308b<\/li><li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u30b5\u30fc\u30d0\u3078\u3001\u30b5\u30fc\u30d0\u304b\u3089\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3078\u3068\u3044\u3046\u53cc\u65b9\u5411\u306e\u3084\u308a\u53d6\u308a\u304c\u53ef\u80fd<\/li><\/ul>\n\n\n\n<p>WebSocket\u306f\u5168\u3066\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u4e3b\u8981\u306a\u6700\u65b0\u30d6\u30e9\u30a6\u30b6\u3067\u3042\u308c\u3070\u307b\u307c\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059(\u5bfe\u5fdc\u72b6\u6cc1\u306f<a href=\"http:\/\/ja.wikipedia.org\/wiki\/WebSocket#.E3.82.AF.E3.83.A9.E3.82.A4.E3.82.A2.E3.83.B3.E3.83.88\">WebSocket\u306eWiki<\/a>\u304c\u8a73\u3057\u3044\u3067\u3059)\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u305d\u306e2 JavaScript\u3068Java(Tomcat)\u306b\u3088\u308b\u30b5\u30f3\u30d7\u30eb<\/h3>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u30b5\u30f3\u30d7\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>\u3088\u304f\u898b\u304b\u3051\u308b\u591a\u4eba\u6570\u30c1\u30e3\u30c3\u30c8\u3092\u53d6\u308a\u4e0a\u3052\u3066\u307f\u307e\u3057\u305f\u3002<br>\u305f\u3060\u3057\u30b5\u30fc\u30d0\u5074\u306f\u4ee5\u4e0b2\u3064\u306e\u7406\u7531\u3088\u308aNode.js\u3067\u306f\u306a\u304fJava(Tomcat)\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<br>\u25a0\u7406\u75311. \u30b5\u30fc\u30d0\u30a2\u30d7\u30ea\u306fJavaScript\u3088\u308aJava\u3067\u4f5c\u308b\u3053\u3068\u304c\u591a\u3044<br>\u30b5\u30fc\u30d0\u30b5\u30a4\u30c9JavaScript\u3068\u3044\u3046\u3082\u306e\u3082\u5b58\u5728\u3057\u3066\u306f\u3044\u307e\u3059\u304c\u3001\u6b63\u76f4Node.js\u4ee5\u5916\u306f\u672a\u7d4c\u9a13\u3068\u3044\u3046\u4eba\u304c\u591a\u3044\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<br>\u25a0\u7406\u75312. Node.js\u306e\u30d7\u30ed\u30bb\u30b9\u7ba1\u7406\u65b9\u6cd5\u304c\u78ba\u7acb\u3057\u3066\u3044\u306a\u3044<br>\u300c\u3084\u3063\u305f\u30b5\u30f3\u30d7\u30eb\u304c\u52d5\u3044\u305f\u52d5\u3044\u305f\u300d\u30ec\u30d9\u30eb\u3067\u3042\u308c\u3070\u3001\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u304b\u3089<br>% node foo.js<br>\u3067\u3082\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u696d\u52d9\u5229\u7528\u306a\u3069\u3082\u8996\u91ce\u306b\u5165\u308c\u308b\u3068Tomcat\u7ba1\u7406\u306e\u65b9\u304c\u671b\u307e\u3057\u3044\u3068\u601d\u3044\u307e\u3059(WebLogic\u3084JBoss\u306e\u65b9\u304c\u3088\u308a\u826f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u30b5\u30f3\u30d7\u30eb\u3068\u3044\u3046\u3053\u3068\u3067\u2026\u2026)\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u30b5\u30f3\u30d7\u30eb\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074(JavaScript)<\/h4>\n\n\n\n<pre class=\"wp-block-preformatted\">[html]\n&lt;html&gt;\n&lt;head&gt;\n&lt;meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\"&gt;\n&lt;title&gt;WebSocket Sample&lt;\/title&gt;\n&lt;script src=\"http:\/\/code.jquery.com\/jquery-latest.min.js\"&gt;&lt;\/script&gt;\n&lt;script&gt;\n$(function(){\n\t\/\/ WebSocket\u4f5c\u6210\n\tvar ws = new WebSocket(\"ws:\/\/localhost:8080\/WebSocketSample\/echo\");\n\n\t\/\/ WebSocket open\u6642\u306e\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u767b\u9332\n\tws.onopen = function(){\n\t\t$(\"#log\").prepend(\"&amp;lt;onopen&amp;gt; \" + \"&lt;br\/&gt;\");\n\t}\n\n\t\/\/ WebSocket message\u53d7\u4fe1\u6642\u306e\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u767b\u9332\n\tws.onmessage = function(message){\n\t\t$(\"#log\").prepend(message.data + \"&lt;br\/&gt;\");\n\t}\n\n\t\/\/ WebSocket error\u6642\u306e\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u767b\u9332\n\tws.onerror = function(){\n\t\t$(\"#log\").prepend(\"&amp;lt;onerror&amp;gt; \" + \"&lt;br\/&gt;\");\n\t}\n\n\t\/\/ WebSocket close\u6642\u306e\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u767b\u9332\n\tws.onclose = function(){\n\t\t$(\"#log\").prepend(\"&amp;lt;onclose&amp;gt; \" + \"&lt;br\/&gt;\");\n\t}\n\n\t\/\/ Window\u304c\u9589\u3058\u3089\u308c\u305f(\u4f8b\uff1a\u30d6\u30e9\u30a6\u30b6\u3092\u9589\u3058\u305f)\u6642\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u8a2d\u5b9a\n\t$(window).unload(function() {\n\t\tws.onclose(); \/\/ WebSocket close\n\t})\n\n\t\/\/ \u30ad\u30fc\u5165\u529b\u6642\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u8a2d\u5b9a\n\t$(\"#message\").keyup(function(e){\n\t\tws.send($(\"#message\").val()); \/\/ WebSocket\u3092\u4f7f\u3044\u30b5\u30fc\u30d0\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\n\t});\n\n})\n&lt;\/script&gt;\n&lt;\/head&gt;\n&lt;body&gt;&lt;input type=\"text\" id=\"message\" \/&gt;&lt;div id=\"log\" \/&gt;&lt;\/body&gt;\n&lt;\/html&gt;\n[\/html]<\/pre>\n\n\n\n<p>9\u884c\u76ee\u306enew WebSocket(&#8220;\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8&#8221;)\u3067WebSocket\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<br>\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306fws(http\u306e\u4ee3\u308f\u308a)\u307e\u305f\u306fwss(https\u306e\u4ee3\u308f\u308a)\u3067\u59cb\u3081\u307e\u3059\u3002<br>\u305d\u3057\u3066WebSocket\u306bonopen, onmessage, onerror, onclose\u306e\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u3092\u30bb\u30c3\u30c8\u3057\u307e\u3059\u3002<br>\u305d\u308c\u305e\u308c\u76f4\u611f\u7684\u306b\u308f\u304b\u308b\u30a4\u30d9\u30f3\u30c8\u540d\u3060\u3068\u601d\u3044\u307e\u3059\u3002<br>\u8a73\u7d30\u306f<a href=\"http:\/\/www.w3.org\/TR\/websockets\/\">The WebSocket API<\/a>\u3092\u5fa1\u89a7\u304f\u3060\u3055\u3044(<a href=\"http:\/\/www.hcn.zaq.ne.jp\/___\/WEB\/WebSocket-ja.html\">\u65e5\u672c\u8a9e\u8a33\u3092\u3057\u3066\u304f\u3060\u3055\u3063\u3066\u3044\u308b\u65b9\u306e\u30da\u30fc\u30b8<\/a>)<br>\u4e00\u822c\u7684\u306a\u6d41\u308c\u306f open \u2192 message \u2192 message \u2192 &#8230; \u2192 message \u2192 close \u3068\u306a\u308a\u307e\u3059\u3002<br>\u30e1\u30c3\u30bb\u30fc\u30b8\u9001\u4fe1\u306e\u969b\u306f\u300138\u884c\u76ee\u306e\u3088\u3046\u306bWebSocket\u306b\u5bfe\u3057send(&#8220;\u9001\u4fe1\u30e1\u30c3\u30bb\u30fc\u30b8&#8221;)\u3092\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u30b5\u30fc\u30d0\u5074(Java\/Tomcat)<\/h4>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u30b5\u30fc\u30d0\u5074\u3067\u3059\u3002<br>\u30b5\u30fc\u30d0\u5074\u306f\u3001Java(Tomcat7.0.39)\u3067\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059(\u305d\u306e\u4ed6\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3060\u3068\u30e1\u30bd\u30c3\u30c9\u304c\u7570\u306a\u308a\u52d5\u304b\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059)\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[java]\nimport java.io.IOException;\nimport java.nio.ByteBuffer;\nimport java.nio.CharBuffer;\nimport java.util.Set;\nimport java.util.concurrent.CopyOnWriteArraySet;\nimport java.util.concurrent.atomic.AtomicInteger;\n\nimport javax.servlet.annotation.WebServlet;\nimport javax.servlet.http.HttpServletRequest;\n\nimport org.apache.catalina.websocket.MessageInbound;\nimport org.apache.catalina.websocket.StreamInbound;\nimport org.apache.catalina.websocket.WebSocketServlet;\nimport org.apache.catalina.websocket.WsOutbound;\n\n@WebServlet(value = { \"\/echo\" })\npublic class EchoServlet extends WebSocketServlet {\n\n\t\/**\n\t * serialVersionUID\n\t *\/\n\tprivate static final long serialVersionUID = 6946416208261279049L;\n\n\t\/**\n\t * \u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306aID\u30ab\u30a6\u30f3\u30bf\n\t *\/\n\tprivate static final AtomicInteger idCounter = new AtomicInteger(1);\n\n\t\/**\n\t * \u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306aEchoInbound\u306eSet\n\t *\/\n\tprivate static final Set echoInboundSet = new CopyOnWriteArraySet();\n\n\t@Override\n\tprotected StreamInbound createWebSocketInbound(String subProtocol,\n\t\t\tHttpServletRequest request) {\n\t\treturn new EchoInbound(idCounter.getAndIncrement());\n\t}\n\n\t\/**\n\t * \u5168\u4f53\u306bEcho\u3059\u308bWebSocket\n\t *\/\n\tprivate class EchoInbound extends MessageInbound {\n\n\t\tprivate String id;\n\n\t\tpublic EchoInbound(int id) {\n\t\t\tthis.id = Integer.toString(id);\n\t\t}\n\n\t\t@Override\n\t\tprotected void onOpen(WsOutbound outbound) {\n\t\t\tSystem.out.println(\"onOpen\");\n\t\t\techoInboundSet.add(this);\n\n\t\t\ttry {\n\t\t\t\toutbound.writeTextMessage(CharBuffer.wrap(\"YOU ARE \" + id));\n\t\t\t\ttalk(\"JOIN \" + id);\n\t\t\t} catch (IOException e) {\n\t\t\t\te.printStackTrace();\n\t\t\t}\n\t\t}\n\n\t\t@Override\n\t\tprotected void onClose(int status) {\n\t\t\tSystem.out.println(\"onClose(status = \" + status + \")\");\n\t\t\techoInboundSet.remove(this);\n\t\t\ttry {\n\t\t\t\ttalk(\"PART \" + id);\n\t\t\t} catch (IOException e) {\n\t\t\t\te.printStackTrace();\n\t\t\t}\n\t\t}\n\n\t\t@Override\n\t\tprotected void onBinaryMessage(ByteBuffer message) throws IOException {\n\t\t\tSystem.out.println(\"onBinaryMessage\");\n\t\t}\n\n\t\t@Override\n\t\tprotected void onTextMessage(CharBuffer message) throws IOException {\n\t\t\ttalk(id + \"&gt; \" + message);\n\t\t}\n\n\t\tprivate void talk(String message) throws IOException{\n\t\t\tCharBuffer charBuffer = CharBuffer.wrap(message);\n\t\t\tfor (MessageInbound echoInbound : echoInboundSet) {\n\t\t\t\techoInbound.getWsOutbound().writeTextMessage(charBuffer);\n\t\t\t\tcharBuffer.position(0);\n\t\t\t}\n\t\t}\n\t}\n}\n[\/java]<\/pre>\n\n\n\n<p>\u30dd\u30a4\u30f3\u30c8\u306f\u4ee5\u4e0b5\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>16\u884c\u76ee\uff1a@WebServlet(value = { &#8220;\/echo&#8221; }) \u3092\u66f8\u304f(web.xml\u306e\u8a18\u8ff0\u304c\u4e0d\u8981)<\/li><li>17\u884c\u76ee\uff1aWebSocketServlet\u3092\u7d99\u627f\u3057\u305f\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3092\u4f5c\u6210\u3059\u308b<\/li><li>43\u884c\u76ee\uff1aMessageInbound(StreamInbound\u3067\u3082\u53ef)\u3092\u7d99\u627f\u3057\u305f\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b(\u30e1\u30a4\u30f3\u3068\u306a\u308b\u30af\u30e9\u30b9\u3067\u3059)<\/li><li>81\u884c\u76ee\uff1aMessageInbound#onTextMessage\u306b\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u30c6\u30ad\u30b9\u30c8\u3092\u53d7\u3051\u53d6\u3063\u305f\u969b\u306e\u51e6\u7406\u3092\u66f8\u304f<\/li><li>57\u884c\u76ee\u300188\u884c\u76ee\uff1a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u30c6\u30ad\u30b9\u30c8\u3092\u6e21\u3059\u6642\u306f\u3001outbound(#getWsOutbound\u3067\u53d6\u5f97\u53ef\u80fd)\u306b\u5bfe\u3057#writeTextMessage\u3092\u5b9f\u884c\u3059\u308b<\/li><\/ul>\n\n\n\n<p>\u4eca\u56de\u306f\u591a\u4eba\u6570\u30c1\u30e3\u30c3\u30c8\u3067\u63a5\u7d9a\u7ba1\u7406\u304c\u5fc5\u8981\u306a\u305f\u3081#onOpen\u3084#onClose\u3001echoInboundSet\u304c\u30bd\u30fc\u30b9\u306b\u3042\u308a\u307e\u3059\u304c\u3001\u63a5\u7d9a\u7ba1\u7406\u304c\u4e0d\u8981\u3067\u3042\u308c\u3070\u3053\u308c\u3089\u306f\u4e0d\u8981\u3067\u3059\u306e\u3067\u66f4\u306b\u7c21\u5358\u306b\u306a\u308a\u307e\u3059\u3002<br>\u30d7\u30ed\u30b0\u30e9\u30e0\u306e@Override\u90e8\u5206\u306e\u8a73\u7d30\u306f<a href=\"http:\/\/tomcat.apache.org\/tomcat-7.0-doc\/web-socket-howto.html\">Tomcat\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u5fa1\u89a7\u4e0b\u3055\u3044\u3002<br>\u203bTomcat\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u901a\u308a\u3001Tomcat\u306eWebSocket\u306f\u307e\u3060\u958b\u767a\u6bb5\u968e\u3067\u3059\u306e\u3067\u3054\u6ce8\u610f\u4e0b\u3055\u3044<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5b9f\u884c\u7d50\u679c<\/h4>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"306\" height=\"426\" src=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig04.png\" alt=\"\" class=\"wp-image-606\" srcset=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig04.png 306w, https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig04-215x300.png 215w\" sizes=\"(max-width: 306px) 100vw, 306px\" \/><\/figure><\/div>\n\n\n\n<p>Firefox20\u3067\u5b9f\u884c\u3057\u305f\u7d50\u679c\u3067\u3059\u3002<br>\u76f8\u624b\u304c\u4e00\u6587\u5b57\u5165\u529b\u3059\u308b\u5ea6\u306b\u6587\u5b57\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<br>\u56f34. Firefox\u3067\u306e\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u304a\u308f\u308a\u306b<\/h3>\n\n\n\n<p>\u4eca\u56de\u306fWebSocket\u306b\u3064\u3044\u3066\u3001\u65e2\u5b58\u306e\u901a\u4fe1\u898f\u683cHTTP\u3068\u306e\u9055\u3044\u3068Java\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<br>\u7d39\u4ecb\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u306fEclipse\u3067\u30a4\u30f3\u30dd\u30fc\u30c8\u53ef\u80fd\u306a\u5f62\u5f0f\u3067UP\u3057\u3066\u304a\u304d\u307e\u306e\u3067\u3001\u662f\u975e\u3068\u3082WebSocket\u3092\u304a\u8a66\u3057\u4e0b\u3055\u3044\u3002<br><a href=\"http:\/\/labs.opentone.co.jp\/wp-content\/uploads\/2013\/04\/WebSocketSample.zip\">WebSocketSample.zip<\/a><br>\u203bEclipse\u3067\u30a6\u30a3\u30f3\u30c9\u30a6 \u2192 \u8a2d\u5b9a \u2192 \u30b5\u30fc\u30d0 \u2192 \u30e9\u30f3\u30bf\u30a4\u30e0\u74b0\u5883 \u3067Tomcat7.0.39\u3092\u8ffd\u52a0\u3057\u3001WebSocketSample\u30d7\u30ed\u30b8\u30a7\u30af\u30c8 \u2192 \u30d7\u30ed\u30d1\u30c6\u30a3 \u2192 Java\u306e\u30d3\u30eb\u30c9\u30fb\u30d1\u30b9 \u2192 \u30e9\u30a4\u30d6\u30e9\u30ea\u30fc \u2192 \u30e9\u30a4\u30d6\u30e9\u30ea\u30fc\u306e\u8ffd\u52a0 \u2192 \u30b5\u30fc\u30d0\u30fb\u30e9\u30f3\u30bf\u30a4\u30e0 \u3067\u5148\u306b\u8ffd\u52a0\u3057\u305fTomcat7.0.39\u3092\u8a2d\u5b9a<\/p>\n\n\n\n<p>WebSocket\u306b\u3064\u3044\u3066\u7d30\u304b\u3044\u3068\u3053\u308d\u307e\u3067\u77e5\u308a\u305f\u3044\u3068\u3044\u3046\u65b9\u306f\u3001\u672c\u5bb6\u672c\u5143\u306e <a href=\"http:\/\/www.ietf.org\/rfc\/rfc6455.txt\">RFC 6455 The WebSocket Protocol<\/a>\u3092\u8aad\u3080\u3068\u3044\u3044\u3068\u601d\u3044\u307e\u3059(<a href=\"http:\/\/www.hcn.zaq.ne.jp\/___\/WEB\/RFC6455-ja.html\">\u65e5\u672c\u8a9e\u8a33\u3092\u3057\u3066\u304f\u3060\u3055\u3063\u3066\u3044\u308b\u65b9\u306e\u30da\u30fc\u30b8<\/a>)\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u3067\u306f\u6b21\u56de\u3092\u304a\u697d\u3057\u307f\u306b\u3002&nbsp;<\/p>\n<div class=\"opent-_2\" style=\"margin-top: 10px;margin-right: 10px;margin-bottom: 10px;margin-left: 10px;\" id=\"opent-3764785716\"><a href=\"https:\/\/www.opentone.co.jp\/backlog\/\" aria-label=\"twitter_backlogskt_new\"><img src=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2023\/02\/twitter_backlogskt_new.jpg\" alt=\"\"  srcset=\"https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2023\/02\/twitter_backlogskt_new.jpg 1024w, https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2023\/02\/twitter_backlogskt_new-300x157.jpg 300w, https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2023\/02\/twitter_backlogskt_new-768x401.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" width=\"384\" height=\"200\"   \/><\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>\u7686\u69d8\u3053\u3093\u306b\u3061\u306f\u3002t.i.\u3067\u3054\u3056\u3044\u307e\u3059\u3002 \u30bf\u30a4\u30c8\u30eb\u306eWebSocket\u3068\u306f\u3001HTML5\u306e\u76ee\u7389\u3067\u3042\u308b\u6700\u8fd1<\/p>\n","protected":false},"author":1,"featured_media":603,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[28],"tags":[],"class_list":["post-601","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web-system",""],"acf":[],"aioseo_notices":[],"uagb_featured_image_src":{"full":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01.png",874,369,false],"thumbnail":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-150x150.png",150,150,true],"medium":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-300x127.png",300,127,true],"medium_large":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-768x324.png",640,270,true],"large":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01.png",640,270,false],"1536x1536":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01.png",874,369,false],"2048x2048":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01.png",874,369,false],"engage-mag-carousel-img":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-783x369.png",783,369,true],"engage-mag-carousel-img-landscape":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-783x225.png",783,225,true],"engage-mag-carousel-large-img":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01.png",874,369,false],"engage-mag-carousel-large-img-landscape":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-874x287.png",874,287,true],"engage-mag-large-thumb":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01.png",874,369,false],"engage-mag-small-thumb":["https:\/\/www.opentone.co.jp\/ot-lab\/wp-content\/uploads\/sites\/11\/2021\/02\/2522_fig01-350x220.png",350,220,true]},"uagb_author_info":{"display_name":"ah106rx4o4","author_link":"https:\/\/www.opentone.co.jp\/ot-lab\/author\/ah106rx4o4"},"uagb_comment_info":0,"uagb_excerpt":"\u7686\u69d8\u3053\u3093\u306b\u3061\u306f\u3002t.i.\u3067\u3054\u3056\u3044\u307e\u3059\u3002 \u30bf\u30a4\u30c8\u30eb\u306eWebSocket\u3068\u306f\u3001HTML5\u306e\u76ee\u7389\u3067\u3042\u308b\u6700\u8fd1","_links":{"self":[{"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/posts\/601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/comments?post=601"}],"version-history":[{"count":1,"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/posts\/601\/revisions"}],"predecessor-version":[{"id":607,"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/posts\/601\/revisions\/607"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/media\/603"}],"wp:attachment":[{"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/media?parent=601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/categories?post=601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.opentone.co.jp\/ot-lab\/wp-json\/wp\/v2\/tags?post=601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}