{"id":11256,"date":"2024-03-15T06:39:42","date_gmt":"2024-03-14T21:39:42","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%81%ae%e4%b8%ad%e6%96%87%e3%81%ae%e6%96%87%e5%ad%97%e5%8c%96%e3%81%91%e3%81%ae%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%8c%e3%81%82%e3%82%8a%e3%81%be%e3%81%99\/"},"modified":"2025-08-05T06:57:33","modified_gmt":"2025-08-04T21:57:33","slug":"java%e3%81%a7%e3%81%ae%e4%b8%ad%e6%96%87%e3%81%ae%e6%96%87%e5%ad%97%e5%8c%96%e3%81%91%e3%81%ae%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%8c%e3%81%82%e3%82%8a%e3%81%be%e3%81%99","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%81%ae%e4%b8%ad%e6%96%87%e3%81%ae%e6%96%87%e5%ad%97%e5%8c%96%e3%81%91%e3%81%ae%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%8c%e3%81%82%e3%82%8a%e3%81%be%e3%81%99\/","title":{"rendered":"java\u3067\u306e\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u306e\u89e3\u6c7a\u65b9\u6cd5\u306f\u4f55\u304c\u3042\u308a\u307e\u3059\u304b\uff1f"},"content":{"rendered":"

Java\u306b\u304a\u3051\u308b\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u554f\u984c\u306e\u89e3\u6c7a\u7b56\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n

    \n
  1. UTF-8\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002Java\u30d5\u30a1\u30a4\u30eb\u3068IDE\u5185\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u304c\u4e21\u65b9UTF-8\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u306b # -*- coding: utf-8 -*- \u3092\u8ffd\u52a0\u3057\u3066\u30a8\u30f3\u30b3\u30fc\u30c9\u65b9\u6cd5\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/li>\n
  2. \u65e5\u672c\u8a9e\u3067\u306e\u540c\u7fa9\u8a9e\uff1aUnicode\u30a8\u30b9\u30b1\u30fc\u30d7\u6587\u5b57\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u6f22\u5b57\u3092Unicode\u30a8\u30b9\u30b1\u30fc\u30d7\u6587\u5b57\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6f22\u5b57\u306e\u300c\u4e2d\u300d\u3092\u300c\\u4E2D\u300d\u3068\u5909\u63db\u3057\u307e\u3059\u3002\u7c21\u5358\u306a\u6587\u5b57\u5217\u306b\u306f\u4fbf\u5229\u3067\u3059\u304c\u3001\u591a\u304f\u306e\u6f22\u5b57\u3092\u6271\u3046\u5834\u5408\u3001\u5197\u9577\u3067\u8aad\u307f\u3065\u3089\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n
  3. InputStreamReader\u3068OutputStreamWriter\u3092\u4f7f\u7528\u3059\u308b\uff1aInputStream\u3068OutputStream\u3092\u4f7f\u7528\u3057\u305f\u8aad\u307f\u66f8\u304d\u64cd\u4f5c\u306e\u969b\u306b\u3001InputStreamReader\u3068OutputStreamWriter\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u6307\u5b9a\u3059\u308b\u3002\u4f8b\u3048\u3070\u3001InputStreamReader reader = new InputStreamReader(inputStream, “UTF-8”)\u3068 OutputStreamWriter writer = new OutputStreamWriter(outputStream, “UTF-8”)\u3002<\/li>\n
  4. String.getBytes()\u30e1\u30bd\u30c3\u30c9\u3068new String()\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\uff1a\u6587\u5b57\u5217\u3092\u30d0\u30a4\u30c8\u914d\u5217\u306b\u5909\u63db\u3059\u308b\u3068\u304d\u306b\u306f\u3001getBytes()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u65b9\u5f0f\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001byte[] bytes = str.getBytes(“UTF-8”)\uff1b\u307e\u305f\u3001\u30d0\u30a4\u30c8\u914d\u5217\u3092\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u3068\u304d\u306b\u306f\u3001new String()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u65b9\u5f0f\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001String str = new String(bytes, “UTF-8”)\u3002<\/li>\n
  5. Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u6587\u5b57\u30a8\u30f3\u30b3\u30fc\u30c9\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001web.xml\u30d5\u30a1\u30a4\u30eb\u3067\u8a2d\u5b9a\u3057\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u30d7\u30ed\u30bb\u30b9\u3067\u6587\u5b57\u3092\u30a8\u30f3\u30b3\u30fc\u30c9\u304a\u3088\u3073\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n

    \u5177\u4f53\u306e\u72b6\u6cc1\u306b\u5408\u308f\u305b\u3066\u3001\u9069\u5207\u306a\u65b9\u6cd5\u3092\u9078\u3093\u3067\u3001\u65e5\u672c\u6587\u5b57\u5316\u3051\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    Java\u306b\u304a\u3051\u308b\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u554f\u984c\u306e\u89e3\u6c7a\u7b56\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002 UTF-8\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002Java\u30d5\u30a1\u30a4\u30eb\u3068IDE\u5185\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u304c\u4e21\u65b9UTF-8\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u306b # -*- […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-11256","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\njava\u3067\u306e\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u306e\u89e3\u6c7a\u65b9\u6cd5\u306f\u4f55\u304c\u3042\u308a\u307e\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"java\u3067\u306e\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u306e\u89e3\u6c7a\u65b9\u6cd5\u306f\u4f55\u304c\u3042\u308a\u307e\u3059\u304b\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\" \/>\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\u306e\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u306e\u89e3\u6c7a\u65b9\u6cd5\u306f\u4f55\u304c\u3042\u308a\u307e\u3059\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"java\u3067\u306e\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u306e\u89e3\u6c7a\u65b9\u6cd5\u306f\u4f55\u304c\u3042\u308a\u307e\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"java\u3067\u306e\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u306e\u89e3\u6c7a\u65b9\u6cd5\u306f\u4f55\u304c\u3042\u308a\u307e\u3059\u304b\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\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u306e\u4e2d\u6587\u306e\u6587\u5b57\u5316\u3051\u306e\u89e3\u6c7a\u65b9\u6cd5\u306f\u4f55\u304c\u3042\u308a\u307e\u3059\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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