{"id":75813,"date":"2024-03-20T16:14:53","date_gmt":"2024-03-20T07:14:53","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%83%90%e3%83%83%e3%82%af%e3%82%a8%e3%83%b3%e3%83%89%e3%81%8b%e3%82%89%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%ab%e3%81%97%e3%81%a6%e3%83%a1%e3%83%83%e3%82%bb%e3%83%bc%e3%82%b8%e3%82%92\/"},"modified":"2025-08-11T13:48:42","modified_gmt":"2025-08-11T04:48:42","slug":"java%e3%83%90%e3%83%83%e3%82%af%e3%82%a8%e3%83%b3%e3%83%89%e3%81%8b%e3%82%89%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%ab%e3%81%97%e3%81%a6%e3%83%a1%e3%83%83%e3%82%bb%e3%83%bc%e3%82%b8%e3%82%92","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%83%90%e3%83%83%e3%82%af%e3%82%a8%e3%83%b3%e3%83%89%e3%81%8b%e3%82%89%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%ab%e3%81%97%e3%81%a6%e3%83%a1%e3%83%83%e3%82%bb%e3%83%bc%e3%82%b8%e3%82%92\/","title":{"rendered":"Java\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304b\u3089\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306b\u30d7\u30c3\u30b7\u30e5\u3067\u304d\u307e\u3059\u304b\uff1f"},"content":{"rendered":"<p>WebSocket\u3092\u5229\u7528\u3057\u3066\u3001Java\u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304b\u3089\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002WebSocket\u306f\u3001\u5358\u4e00\u306eTCP\u63a5\u7d9a\u4e0a\u3067\u5168\u4e8c\u91cd\u901a\u4fe1\u3092\u884c\u3046\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u304c\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306b\u7a4d\u6975\u7684\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>WebSocket \u306e\u6a5f\u80fd\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001Java API for WebSocket (javax.websocket) \u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u7c21\u5358\u306a\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>javax.websocket.Endpoint<\/li>\n<li>\u30aa\u30f3\u30aa\u30fc\u30d7\u30f3<\/li>\n<li>\u7d42\u4e86\u6642<\/li>\n<li>\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f<\/li>\n<li>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u53d7\u4fe1\u6642<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> javax.websocket.*;\r\n<span class=\"hljs-keyword\">import<\/span> javax.websocket.server.ServerEndpoint;\r\n\r\n<span class=\"hljs-meta\">@ServerEndpoint(\"\/websocket\")<\/span>\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyWebSocketEndpoint<\/span> {\r\n\r\n    <span class=\"hljs-meta\">@OnOpen<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onOpen<\/span><span class=\"hljs-params\">(Session session)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u5728\u5ba2\u6237\u7aef\u8fde\u63a5\u65f6\u6267\u884c\u7684\u64cd\u4f5c<\/span>\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@OnClose<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onClose<\/span><span class=\"hljs-params\">(Session session, CloseReason closeReason)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u5728\u5ba2\u6237\u7aef\u5173\u95ed\u8fde\u63a5\u65f6\u6267\u884c\u7684\u64cd\u4f5c<\/span>\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@OnError<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onError<\/span><span class=\"hljs-params\">(Session session, Throwable throwable)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u5728\u53d1\u751f\u9519\u8bef\u65f6\u6267\u884c\u7684\u64cd\u4f5c<\/span>\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@OnMessage<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onMessage<\/span><span class=\"hljs-params\">(Session session, String message)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u63a5\u6536\u5230\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6d88\u606f\u65f6\u6267\u884c\u7684\u64cd\u4f5c<\/span>\r\n    }\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>javax.websocket.server.ServerApplicationConfig<\/li>\n<li>\u30a2\u30ce\u30c6\u30fc\u30c8\u3055\u308c\u305f\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u30af\u30e9\u30b9\u3092\u53d6\u5f97\u3059\u308b<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.util.Set;\r\n<span class=\"hljs-keyword\">import<\/span> javax.websocket.Endpoint;\r\n<span class=\"hljs-keyword\">import<\/span> javax.websocket.server.ServerApplicationConfig;\r\n<span class=\"hljs-keyword\">import<\/span> javax.websocket.server.ServerEndpointConfig;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">WebSocketConfig<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">ServerApplicationConfig<\/span> {\r\n\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> Set&lt;Class&lt;?&gt;&gt; getAnnotatedEndpointClasses(Set&lt;Class&lt;?&gt;&gt; scanned) {\r\n        <span class=\"hljs-keyword\">return<\/span> scanned;\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> Set&lt;ServerEndpointConfig&gt; <span class=\"hljs-title function_\">getEndpointConfigs<\/span><span class=\"hljs-params\">(Set&lt;Class&lt;? extends Endpoint&gt;&gt; scanned)<\/span> {\r\n        <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">null<\/span>;\r\n    }\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u6700\u7d42\u7684\u306b\u306fWeb.xml\u30d5\u30a1\u30a4\u30eb\u306bWebSocket\u306e\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3068\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u30de\u30c3\u30d4\u30f3\u30b0\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">servlet<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">servlet-name<\/span>&gt;<\/span>javax.websocket.server.ServletContainer<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">servlet-name<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">servlet-class<\/span>&gt;<\/span>org.glassfish.jersey.servlet.ServletContainer<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">servlet-class<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">init-param<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">param-name<\/span>&gt;<\/span>javax.ws.rs.Application<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">param-name<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">param-value<\/span>&gt;<\/span>com.example.WebSocketConfig<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">param-value<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">init-param<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">servlet<\/span>&gt;<\/span>\r\n\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">servlet-mapping<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">servlet-name<\/span>&gt;<\/span>javax.websocket.server.ServletContainer<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">servlet-name<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">url-pattern<\/span>&gt;<\/span>\/websocket\/*<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">url-pattern<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">servlet-mapping<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>Java \u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304b\u3089\u30bb\u30c3\u30b7\u30e7\u30f3\u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e getBasicRemote().sendText() \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d7\u30c3\u30b7\u30e5\u51fa\u6765\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u305f\u3068\u3048\u3070\u3001onOpen \u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u30bb\u30c3\u30b7\u30e7\u30f3\u30fb\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u683c\u7d0d\u3057\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d7\u30c3\u30b7\u30e5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3068\u304d\u306b session.getBasicRemote().sendText(\u201cmessage\u201d) \u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3067\u306f\u3001Java\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304b\u3089\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3059\u308b\u305f\u3081\u306b WebSoket API \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001JavaScript \u3067\u306f\u3001new WebSocket(url) \u3067 WebSocket \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3057\u3001onmessage \u30a4\u30d9\u30f3\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\u3057\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">var<\/span> socket = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">WebSocket<\/span>(<span class=\"hljs-string\">\"ws:\/\/localhost:8080\/websocket\"<\/span>);\r\nsocket.<span class=\"hljs-property\">onmessage<\/span> = <span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">event<\/span>) {\r\n    <span class=\"hljs-keyword\">var<\/span> message = event.<span class=\"hljs-property\">data<\/span>;\r\n    <span class=\"hljs-comment\">\/\/ \u5904\u7406\u63a5\u6536\u5230\u7684\u6d88\u606f<\/span>\r\n};\r\n<\/code><\/pre>\n<p>WebSocket\u3092\u4f7f\u7528\u3057\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d7\u30c3\u30b7\u30e5\u3059\u308b\u57fa\u672c\u7684\u306a\u624b\u9806\u306f\u4ee5\u4e0a\u306e\u901a\u308a\u3067\u3059\u3002\u5177\u4f53\u7684\u306a\u8981\u671b\u3084\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u3088\u3063\u3066\u306f\u3001\u3055\u3089\u306b\u8a2d\u5b9a\u3084\u64cd\u4f5c\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>WebSocket\u3092\u5229\u7528\u3057\u3066\u3001Java\u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304b\u3089\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002WebSocket\u306f\u3001\u5358\u4e00\u306eTCP\u63a5\u7d9a\u4e0a\u3067\u5168\u4e8c\u91cd\u901a\u4fe1\u3092\u884c\u3046\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u304c\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306b\u7a4d\u6975\u7684\u306b\u30e1\u30c3\u30bb\u30fc\u30b8 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-75813","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304b\u3089\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306b\u30d7\u30c3\u30b7\u30e5\u3067\u304d\u307e\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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