{"id":73970,"date":"2024-03-20T13:45:20","date_gmt":"2024-03-20T04:45:20","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java-%e3%81%a7%e5%a4%a7%e5%ae%b9%e9%87%8f%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e9%ab%98%e9%80%9f%e3%81%ab%e3%82%a2%e3%83%83%e3%83%97%e3%83%ad%e3%83%bc%e3%83%89%e3%81%99%e3%82%8b%e6%96%b9\/"},"modified":"2025-08-11T05:11:07","modified_gmt":"2025-08-10T20:11:07","slug":"java-%e3%81%a7%e5%a4%a7%e5%ae%b9%e9%87%8f%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e9%ab%98%e9%80%9f%e3%81%ab%e3%82%a2%e3%83%83%e3%83%97%e3%83%ad%e3%83%bc%e3%83%89%e3%81%99%e3%82%8b%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java-%e3%81%a7%e5%a4%a7%e5%ae%b9%e9%87%8f%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e9%ab%98%e9%80%9f%e3%81%ab%e3%82%a2%e3%83%83%e3%83%97%e3%83%ad%e3%83%bc%e3%83%89%e3%81%99%e3%82%8b%e6%96%b9\/","title":{"rendered":"Java \u3067\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u3092\u9ad8\u901f\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u65b9\u6cd5"},"content":{"rendered":"<p>\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u306e\u9ad8\u901f\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e2\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30d5\u30a1\u30a4\u30eb\u306e\u4e00\u90e8\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u305f\u5f8c\u306b\u901a\u4fe1\u304c\u5207\u65ad\u3057\u3066\u3057\u307e\u3063\u305f\u969b\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6e08\u307f\u306e\u90e8\u5206\u3092\u8a8d\u8b58\u3057\u3001\u4e2d\u65ad\u3057\u305f\u7b87\u6240\u304b\u3089\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3092\u518d\u958b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6642\u9593\u306e\u77ed\u7e2e\u3084\u30c7\u30fc\u30bf\u8ee2\u9001\u91cf\u306e\u524a\u6e1b\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<li>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9: \u5927\u898f\u6a21\u30d5\u30a1\u30a4\u30eb\u3092\u8907\u6570\u306e\u30c1\u30e3\u30f3\u30af\u306b\u5206\u5272\u3057\u3001\u8907\u6570\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3053\u308c\u3089\u306e\u30c1\u30e3\u30f3\u30af\u3092\u540c\u6642\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002\u5404\u30b9\u30ec\u30c3\u30c9\u306f1\u3064\u306e\u30c1\u30e3\u30f3\u30af\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3092\u62c5\u5f53\u3057\u3001\u8907\u6570\u306e\u30c1\u30e3\u30f3\u30af\u3092\u540c\u6642\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3067\u304d\u308b\u305f\u3081\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u901f\u5ea6\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u304c\u5b8c\u4e86\u3059\u308b\u3068\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u3053\u308c\u3089\u306e\u30c1\u30e3\u30f3\u30af\u30921\u3064\u306e\u5b8c\u5168\u306a\u30d5\u30a1\u30a4\u30eb\u306b\u7d50\u5408\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u3092\u9ad8\u901f\u3067\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u65b9\u6cd5\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.io.File;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.FileInputStream;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.IOException;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.InputStream;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.OutputStream;\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_\">FileUploader<\/span> {\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">BUFFER_SIZE<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">4096<\/span>;\r\n\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_\">uploadFile<\/span><span class=\"hljs-params\">(String uploadUrl, File file)<\/span> <span class=\"hljs-keyword\">throws<\/span> IOException {\r\n        <span class=\"hljs-type\">HttpURLConnection<\/span> <span class=\"hljs-variable\">conn<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-literal\">null<\/span>;\r\n        <span class=\"hljs-type\">OutputStream<\/span> <span class=\"hljs-variable\">outputStream<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-literal\">null<\/span>;\r\n        <span class=\"hljs-type\">InputStream<\/span> <span class=\"hljs-variable\">inputStream<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-literal\">null<\/span>;\r\n\r\n        <span class=\"hljs-keyword\">try<\/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>(uploadUrl);\r\n            conn = (HttpURLConnection) url.openConnection();\r\n            conn.setDoOutput(<span class=\"hljs-literal\">true<\/span>);\r\n            conn.setRequestMethod(<span class=\"hljs-string\">\"POST\"<\/span>);\r\n\r\n            <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">boundary<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"*****\"<\/span>;\r\n            conn.setRequestProperty(<span class=\"hljs-string\">\"Content-Type\"<\/span>, <span class=\"hljs-string\">\"multipart\/form-data; boundary=\"<\/span> + boundary);\r\n\r\n            outputStream = conn.getOutputStream();\r\n            <span class=\"hljs-type\">FileInputStream<\/span> <span class=\"hljs-variable\">fileInputStream<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FileInputStream<\/span>(file);\r\n\r\n            <span class=\"hljs-type\">byte<\/span>[] buffer = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">byte<\/span>[BUFFER_SIZE];\r\n            <span class=\"hljs-type\">int<\/span> bytesRead;\r\n            <span class=\"hljs-keyword\">while<\/span> ((bytesRead = fileInputStream.read(buffer)) != -<span class=\"hljs-number\">1<\/span>) {\r\n                outputStream.write(buffer, <span class=\"hljs-number\">0<\/span>, bytesRead);\r\n            }\r\n\r\n            outputStream.flush();\r\n            fileInputStream.close();\r\n\r\n            <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u670d\u52a1\u7aef\u8fd4\u56de\u7ed3\u679c<\/span>\r\n            inputStream = conn.getInputStream();\r\n            <span class=\"hljs-comment\">\/\/ \u5904\u7406\u670d\u52a1\u7aef\u8fd4\u56de\u7ed3\u679c<\/span>\r\n            <span class=\"hljs-comment\">\/\/ ...<\/span>\r\n        } <span class=\"hljs-keyword\">finally<\/span> {\r\n            <span class=\"hljs-keyword\">if<\/span> (outputStream != <span class=\"hljs-literal\">null<\/span>) {\r\n                outputStream.close();\r\n            }\r\n            <span class=\"hljs-keyword\">if<\/span> (inputStream != <span class=\"hljs-literal\">null<\/span>) {\r\n                inputStream.close();\r\n            }\r\n            <span class=\"hljs-keyword\">if<\/span> (conn != <span class=\"hljs-literal\">null<\/span>) {\r\n                conn.disconnect();\r\n            }\r\n        }\r\n    }\r\n\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-type\">String<\/span> <span class=\"hljs-variable\">uploadUrl<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"http:\/\/example.com\/upload\"<\/span>;\r\n        <span class=\"hljs-type\">File<\/span> <span class=\"hljs-variable\">file<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">File<\/span>(<span class=\"hljs-string\">\"path\/to\/your\/file\"<\/span>);\r\n\r\n        <span class=\"hljs-keyword\">try<\/span> {\r\n            uploadFile(uploadUrl, file);\r\n        } <span class=\"hljs-keyword\">catch<\/span> (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>HTTP \u63a5\u7d9a\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6a5f\u80fd\u3092\u5b9f\u88c5\u3057\u307e\u3057\u305f\u3002`uploadFile` \u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001\u6700\u521d\u306b HTTP \u30ea\u30af\u30a8\u30b9\u30c8 \u30d8\u30c3\u30c0\u30fc\u306e Content-Type \u3092 multipart\/form-data \u306b\u8a2d\u5b9a\u3057\u3001\u30d5\u30a1\u30a4\u30eb\u5185\u5bb9\u3092\u51fa\u529b\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u8fd4\u3055\u308c\u305f\u7d50\u679c\u3092\u53d6\u5f97\u3057\u3066\u3001\u9069\u5207\u306b\u51e6\u7406\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u306e\u9ad8\u901f\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e2\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002 \u30d5\u30a1\u30a4\u30eb\u306e\u4e00\u90e8\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u305f\u5f8c\u306b\u901a\u4fe1\u304c\u5207\u65ad\u3057\u3066\u3057\u307e\u3063\u305f\u969b\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u6e08\u307f\u306e\u90e8\u5206\u3092\u8a8d\u8b58\u3057\u3001\u4e2d\u65ad\u3057\u305f\u7b87\u6240\u304b\u3089\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3092\u518d\u958b\u3059\u308b\u3053\u3068\u304c\u3067\u304d [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-73970","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 \u3067\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u3092\u9ad8\u901f\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Java \u3067\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u3092\u9ad8\u901f\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u65b9\u6cd5\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\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java-\u3067\u5927\u5bb9\u91cf\u30d5\u30a1\u30a4\u30eb\u3092\u9ad8\u901f\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u65b9\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta 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