{"id":11986,"date":"2024-03-15T10:45:25","date_gmt":"2024-03-15T01:45:25","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%81%aehttpurlconnection%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/"},"modified":"2025-08-05T10:21:47","modified_gmt":"2025-08-05T01:21:47","slug":"java%e3%81%a7%e3%81%aehttpurlconnection%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%81%aehttpurlconnection%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%81%af%ef%bc%9f\/","title":{"rendered":"Java\u3067\u306eHttpURLConnection\u306e\u4f7f\u3044\u65b9\u306f\uff1f"},"content":{"rendered":"<p>Java\u3067HttpURLConnection\u3092\u4f7f\u7528\u3057\u3066HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<ol>\n<li>URL\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u3066\u3001URL\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n<li>\u63a5\u7d9a\u3092\u958b\u304f()<\/li>\n<li>URLConnection\u3092HttpURLConnection\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u30ad\u30e3\u30b9\u30c8\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u306a\u305c\u306a\u3089\u3001\u305d\u308c\u306fURLConnection\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3060\u304b\u3089\u3067\u3059\u3002<\/li>\n<li>\u30ea\u30af\u30a8\u30b9\u30c8\u30e1\u30bd\u30c3\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/li>\n<li>setRequestProperty()\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u5165\u529b\u3092\u8a31\u53ef\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<li>\u51fa\u529b\u3092\u8a2d\u5b9a\u3059\u308b(setDoOutput())<\/li>\n<li>\u63a5\u7d9a\u3057\u307e\u3059\u3002<\/li>\n<li>\u30ea\u30af\u30a8\u30b9\u30c8\u30dc\u30c7\u30a3\u3092\u9001\u4fe1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308c\u3070\u3001\u51fa\u529b\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u53d6\u5f97\u3057\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u30dc\u30c7\u30a3\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u3002<\/li>\n<li>\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u304c200\u306e\u5834\u5408\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u6210\u529f\u3057\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>InputStream\u3092\u53d6\u5f97\u3059\u308b<\/li>\n<li>\u30d0\u30c3\u30d5\u30a1\u4ed8\u304d\u30ea\u30fc\u30c0\u30fc<\/li>\n<li>\u63a5\u7d9a\u3092\u5207\u308b (setsuzoku wo kiru)<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.io.BufferedReader;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.InputStreamReader;\r\n<span class=\"hljs-keyword\">import<\/span> java.net.HttpURLConnection;\r\n<span class=\"hljs-keyword\">import<\/span> java.net.URL;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">HttpURLConnectionExample<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        <span class=\"hljs-keyword\">try<\/span> {\r\n            <span class=\"hljs-comment\">\/\/ \u521b\u5efaURL\u5bf9\u8c61<\/span>\r\n            <span class=\"hljs-type\">URL<\/span> <span class=\"hljs-variable\">url<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">URL<\/span>(<span class=\"hljs-string\">\"http:\/\/example.com\"<\/span>);\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u6253\u5f00URL\u8fde\u63a5<\/span>\r\n            <span class=\"hljs-type\">HttpURLConnection<\/span> <span class=\"hljs-variable\">connection<\/span> <span class=\"hljs-operator\">=<\/span> (HttpURLConnection) url.openConnection();\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u8bf7\u6c42\u65b9\u6cd5<\/span>\r\n            connection.setRequestMethod(<span class=\"hljs-string\">\"GET\"<\/span>);\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u8bbe\u7f6e\u8bf7\u6c42\u5934\u4fe1\u606f<\/span>\r\n            connection.setRequestProperty(<span class=\"hljs-string\">\"User-Agent\"<\/span>, <span class=\"hljs-string\">\"Mozilla\/5.0\"<\/span>);\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u53d1\u9001\u8bf7\u6c42<\/span>\r\n            connection.connect();\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u54cd\u5e94\u72b6\u6001\u7801<\/span>\r\n            <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">statusCode<\/span> <span class=\"hljs-operator\">=<\/span> connection.getResponseCode();\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u5224\u65ad\u662f\u5426\u8bf7\u6c42\u6210\u529f<\/span>\r\n            <span class=\"hljs-keyword\">if<\/span> (statusCode == HttpURLConnection.HTTP_OK) {\r\n                <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u54cd\u5e94\u8f93\u5165\u6d41<\/span>\r\n                <span class=\"hljs-type\">BufferedReader<\/span> <span class=\"hljs-variable\">reader<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">BufferedReader<\/span>(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">InputStreamReader<\/span>(connection.getInputStream()));\r\n                \r\n                <span class=\"hljs-comment\">\/\/ \u8bfb\u53d6\u54cd\u5e94\u6570\u636e<\/span>\r\n                String line;\r\n                <span class=\"hljs-type\">StringBuilder<\/span> <span class=\"hljs-variable\">response<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">StringBuilder<\/span>();\r\n                <span class=\"hljs-keyword\">while<\/span> ((line = reader.readLine()) != <span class=\"hljs-literal\">null<\/span>) {\r\n                    response.append(line);\r\n                }\r\n                reader.close();\r\n                \r\n                <span class=\"hljs-comment\">\/\/ \u8f93\u51fa\u54cd\u5e94\u6570\u636e<\/span>\r\n                System.out.println(response.toString());\r\n            } <span class=\"hljs-keyword\">else<\/span> {\r\n                System.out.println(<span class=\"hljs-string\">\"\u8bf7\u6c42\u5931\u8d25\uff0c\u72b6\u6001\u7801\uff1a\"<\/span> + statusCode);\r\n            }\r\n            \r\n            <span class=\"hljs-comment\">\/\/ \u5173\u95ed\u8fde\u63a5<\/span>\r\n            connection.disconnect();\r\n        } <span class=\"hljs-keyword\">catch<\/span> (Exception e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u6ce8\u610f\uff1a\u4e0a\u8a18\u306e\u4f8b\u3067\u306fURL\u30a2\u30c9\u30ec\u30b9\u306f\u30b5\u30f3\u30d7\u30eb\u3067\u3059\u3002\u5b9f\u969b\u306b\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u5b9f\u969b\u306eURL\u30a2\u30c9\u30ec\u30b9\u306b\u7f6e\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067HttpURLConnection\u3092\u4f7f\u7528\u3057\u3066HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a URL\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u3066\u3001URL\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 \u63a5\u7d9a\u3092\u958b\u304f() URLConnection\u3092HttpUR [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[16,26],"class_list":["post-11986","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-16","tag-26"],"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\u3067\u306eHttpURLConnection\u306e\u4f7f\u3044\u65b9\u306f\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Java\u3067\u306eHttpURLConnection\u306e\u4f7f\u3044\u65b9\u306f\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" 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content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u306ehttpurlconnection\u306e\u4f7f\u3044\u65b9\u306f\uff1f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T01:45:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-05T01:21:47+00:00\" \/>\n<meta name=\"author\" content=\"\u82bd\u4f9d, \u96e8\u591c\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u82bd\u4f9d, \u96e8\u591c\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"4\u5206\" \/>\n<script type=\"application\/ld+json\" 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