{"id":147824,"date":"2021-05-28T05:01:51","date_gmt":"2021-05-28T04:01:51","guid":{"rendered":"https:\/\/blog.jetbrains.com\/kotlin\/2021\/05\/kotlinx-serialization-1-2-released\/"},"modified":"2021-05-28T07:17:58","modified_gmt":"2021-05-28T06:17:58","slug":"kotlinx-serialization-1-2-released-ja","status":"publish","type":"kotlin","link":"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2021\/05\/kotlinx-serialization-1-2-released-ja\/","title":{"rendered":"kotlinx.serialization 1.2 \u306e\u30ea\u30ea\u30fc\u30b9: JSON \u9ad8\u901f\u51e6\u7406\u3001\u5024\u30af\u30e9\u30b9\u306e\u30b5\u30dd\u30fc\u30c8\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u898b\u76f4\u3057\u306a\u3069"},"content":{"rendered":"<p>\u5148\u65e5\u3001<code>kotlinx.serialization<\/code> 1.2 \u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\uff01 \u5f53\u793e\u306e\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5411\u3051\u30b7\u30ea\u30a2\u30eb\u5316\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u6539\u5584\u70b9\u304c\u76db\u308a\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u3001\u305d\u306e\u6982\u8981\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2021\/05\/kotlinx-serialization-1-2-released-ja\/#fast-json\">JSON \u306e\u30b7\u30ea\u30a2\u30eb\u5316\u304c\u3053\u308c\u307e\u3067\u3067\u6700\u901f\u306b\u3002<\/a> \u30d0\u30fc\u30b8\u30e7\u30f3 1.2 \u3067\u306f\u3001JSON \u3092\u578b\u5b89\u5168\u306a Kotlin \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u89e3\u91c8\u3057\u3001Kotlin \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30c6\u30ad\u30b9\u30c8\u3068\u3057\u3066\u8868\u793a\u3059\u308b\u51e6\u7406\u3092\u904e\u53bb\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3088\u308a\u3082\u6700\u5927\u3067 2 \u500d\u3082\u901f\u304f\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<li><a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2021\/05\/kotlinx-serialization-1-2-released-ja\/#15-additions\">Kotlin 1.5 \u3067\u8ffd\u52a0\u3055\u308c\u305f\u578b\u30b7\u30b9\u30c6\u30e0\u306e\u30b5\u30dd\u30fc\u30c8\u3002<\/a> Kotlin \u306e\u4ed6\u306e\u30af\u30e9\u30b9\u540c\u69d8\u306b\u3001\u5024\u30af\u30e9\u30b9\uff08value class\uff09\u30fb\u7b26\u53f7\u306a\u3057\u306e\u6570\u5024\u3092 JSON \u306b\u5909\u63db\u3057\u3001\u307e\u305f\u5143\u306b\u623b\u3059\u3068\u3044\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<li><a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2021\/05\/kotlinx-serialization-1-2-released-ja\/#api-docs\">\u65b0\u3057\u304f\u306a\u3063\u305f API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a> \u3092\u4f7f\u7528\u3059\u308c\u3070\u3001<code>kotlinx.serialization<\/code> \u304c\u63d0\u4f9b\u3059\u308b\u3059\u3079\u3066\u306e\u6a5f\u80fd\u3092\u7c21\u5358\u306b\u898b\u3064\u3051\u3089\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u30d0\u30fc\u30b8\u30e7\u30f3 1.2 \u306b\u306f\u3001<a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2021\/05\/kotlinx-serialization-1-2-released-ja\/#alt-names\">JSON \u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u4ee3\u66ff\u540d<\/a>\u306b\u5bfe\u3059\u308b\u30b5\u30dd\u30fc\u30c8\u304c\u65b0\u3057\u304f\u76db\u308a\u8fbc\u307e\u308c\u3066\u3044\u308b\u307b\u304b\u3001\u305d\u308c\u306b\u3088\u308a\u3001<a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2021\/05\/kotlinx-serialization-1-2-released-ja\/#protobuf-schemas\">Kotlin \u30af\u30e9\u30b9\u304b\u3089\u81ea\u52d5\u7684\u306b Protobuf \u30b9\u30ad\u30fc\u30de\u3092\u751f\u6210<\/a>\u3059\u308b\u65b0\u3057\u3044\u5b9f\u9a13\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3082\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306b\u3064\u3044\u3066\u306f\u3001\u305c\u3072\u3054\u610f\u898b\u3092\u304a\u805e\u304b\u305b\u304f\u3060\u3055\u3044\uff01<\/p>\n<p>\u305d\u308c\u3067\u306f\u3001\u4eca\u56de\u306e\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u95a2\u3059\u308b\u5909\u66f4\u70b9\u3084\u8ffd\u52a0\u6a5f\u80fd\u3092\u4e00\u7dd2\u306b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01 \u65e2\u306b\u5341\u5206\u7406\u89e3\u3055\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u65b9\u306f\u3001\u4e0b\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u624b\u9806\u306b\u30b8\u30e3\u30f3\u30d7\u3057\u3066\u3044\u305f\u3060\u3044\u3066\u69cb\u3044\u307e\u305b\u3093\uff01<\/p>\n<p align=\"center\"><a class=\"jb-download-button\" title=\"\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\" href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2021\/05\/kotlinx-serialization-1-2-released-ja\/#start-using\">kotlinx.serialization 1.2 \u3092\u59cb\u3081\u308b\uff01<\/a><\/p>\n<p><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/698I_AH8h6s\" height=\"445\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><br \/>\n<a href=\"https:\/\/www.youtube.com\/channel\/UCP7uiEZIqci43m22KDl0sNw?sub_confirmation=1\" target=\"_blank\" rel=\"noopener\">Kotlin YouTube \u30c1\u30e3\u30f3\u30cd\u30eb\u306b\u767b\u9332!\uff01<\/a><\/p>\n<p><a name=\"fast-json\"><\/a><\/p>\n<h2>\u3053\u308c\u307e\u3067\u3067\u6700\u901f\u3068\u306a\u308b JSON \u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u30fb\u30c7\u30b3\u30fc\u30c9<\/h2>\n<p>Kotlin \u30af\u30e9\u30b9\u3092 JSON \u306e\u6587\u5b57\u5217\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b\u6a5f\u80fd\u3068 JSON \u306e\u6587\u5b57\u5217\u3092 Kotlin \u30af\u30e9\u30b9\u306b\u5909\u63db\u3059\u308b\u6a5f\u80fd\u306f\u3001<code>kotlinx.serialization<\/code> \u306e\u6a5f\u80fd\u306e\u4e2d\u3067\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u3082\u306e\u3067\u3042\u308b\u305f\u3081\u3001\u5f53\u793e\u306f\u5e38\u306b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6539\u5584\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2021\/04\/Kotlinx.serialization-1.2_2-03.png\" alt=\"kotlinx.serialization \u3092\u4f7f\u3063\u305f JSON \u306e\u89e3\u6790: \u6700\u9ad8\u3067 55% \u3082\u30b9\u30d4\u30fc\u30c9\u30a2\u30c3\u30d7\" \/><\/p>\n<p>\u30d0\u30fc\u30b8\u30e7\u30f3 1.2 \u3067\u306f\u3001<code>kotlinx.serialization<\/code> \u306e\u5185\u90e8\u69cb\u9020\u304c\u5168\u9762\u7684\u306b\u898b\u76f4\u3055\u308c\u3001\u3053\u306e\u30b3\u30a2\u6a5f\u80fd\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5927\u5e45\u306b\u6539\u5584\u3055\u308c\u3066\u3044\u307e\u3059\u3002 JSON \u30c7\u30b3\u30fc\u30c0\u30fc (\u30c6\u30ad\u30b9\u30c8\u3092 Kotlin \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u5909\u63db) \u3092\u66f8\u304d\u76f4\u3057\u3001JSON \u30a8\u30f3\u30b3\u30fc\u30c0\u30fc (Kotlin \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30c6\u30ad\u30b9\u30c8\u306b\u5909\u63db) \u306b\u5bfe\u3059\u308b\u5927\u5e45\u306a\u6700\u9069\u5316\u3082\u5b9f\u65bd\u3057\u307e\u3057\u305f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2021\/04\/Kotlinx.serialization-1.2_2-02-1.png\" alt=\"kotlinx.serialization \u3092\u4f7f\u3063\u305f JSON \u306e\u30a8\u30f3\u30b3\u30fc\u30c9: \u6700\u9ad8\u3067 339% \u3082\u30b9\u30d4\u30fc\u30c9\u30a2\u30c3\u30d7\" \/><\/p>\n<p>\u6700\u65b0\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u3060\u3051\u3067\u3001\u5178\u578b\u7684\u306a\u30a8\u30f3\u30b3\u30fc\u30c9\u3068\u30c7\u30b3\u30fc\u30c9\u306e\u51e6\u7406\u901f\u5ea6\u304c\u6700\u9ad8\u3067 <em>2 \u500d\u3082\u30a2\u30c3\u30d7<\/em>\u3059\u308b\u3053\u3068\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002 (\u898b\u3066\u304a\u5206\u304b\u308a\u306e\u901a\u308a\u3001\u5185\u90e8\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306e\u4e2d\u306b\u306f\u3001\u3053\u3046\u3057\u305f\u65b0\u3057\u3044\u6700\u9069\u5316\u304c\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u3068\u306a\u308a\u3001\u3053\u306e\u6570\u5b57\u3092<em>\u8d85\u3048\u308b<\/em>\u3082\u306e\u3082\u3042\u308a\u307e\u3059\uff01)<\/p>\n<p>\u3053\u3046\u3057\u305f\u5909\u66f4\u304c\u52a0\u3048\u3089\u308c\u305f\u3053\u3068\u3067\u3001<code>kotlinx.serialization<\/code> \u306f\u3001\u305d\u306e\u307e\u307e\u306e\u72b6\u614b\u3067 JSON \u306e\u4ed6\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u540c\u7b49\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5b9f\u73fe\u3057\u3001\u3044\u304f\u3064\u304b\u306e\u70b9\u3067\u306f\u3088\u308a\u9ad8\u3044\u30ec\u30d9\u30eb\u306b\u9054\u3057\u3066\u3044\u307e\u3059\u3002 \u4eca\u56de\u306e\u898b\u76f4\u3057\u3067\u306f\u3001\u3068\u3066\u3082\u30b7\u30f3\u30d7\u30eb\u306a\u30b9\u30cb\u30da\u30c3\u30c8\u306b\u307e\u3067\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\n@Serializable\ndata class User(val name: String, val yearOfBirth: Int)\n\nfun main() {\n\/\/ Faster encoding...\nval data = User(&quot;Louis&quot;, 1901)\nval string = Json.encodeToString(data)\nprintln(string) \/\/ {&quot;name&quot;:&quot;Louis&quot;,&quot;yearOfBirth&quot;:1901}\n\n\/\/ ...and faster decoding!\nval obj = Json.decodeFromString(string)\nprintln(obj) \/\/ User(name=Louis, yearOfBirth=1901)\n}\n<\/pre>\n<p>\u5f53\u793e\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u57fa\u6e96\u306b\u3054\u81ea\u5206\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u8a55\u4fa1\u3059\u308c\u3070\u3001\u3053\u3046\u3057\u305f\u6539\u5584\u5185\u5bb9\u306e\u52b9\u679c\u3092\u6700\u3082\u5f37\u304f\u5b9f\u611f\u3057\u3066\u3044\u305f\u3060\u3051\u308b\u3068\u601d\u3044\u307e\u3059\u3002 \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6570\u5024\u306e\u5927\u307e\u304b\u306a\u50be\u5411\u306f\u3001<a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/pull\/1354\" target=\"_blank\" rel=\"noopener\">\u30a8\u30f3\u30b3\u30fc\u30c9<\/a>\u3068<a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/pull\/1343\" target=\"_blank\" rel=\"noopener\">\u30c7\u30b3\u30fc\u30c9<\/a>\u306b\u95a2\u3059\u308b\u5f53\u793e\u306e\u5185\u90e8\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<code>kotlinx.serialization<\/code> \u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u524d\u306e\u30ea\u30ea\u30fc\u30b9\u3092\u6bd4\u8f03\u3057\u305f\u5185\u5bb9\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><a name=\"15-additions\"><\/a><\/p>\n<h2>\u5024\u30af\u30e9\u30b9\u3068\u7b26\u53f7\u306a\u3057\u306e\u6570\u5024\u578b\u306b\u5bfe\u3059\u308b JSON \u30b7\u30ea\u30a2\u30eb\u5316 (\u9006\u30b7\u30ea\u30a2\u30eb\u5316) \u304c stable \u306b<\/h2>\n<p>Kotlin 1.5.0 \u3067\u306f\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/inline-classes.html\" target=\"_blank\" rel=\"noopener\">\u5024\u30af\u30e9\u30b9<\/a>\u3068<a href=\"https:\/\/kotlinlang.org\/docs\/basic-types.html#unsigned-integers\" target=\"_blank\" rel=\"noopener\">\u7b26\u53f7\u306a\u3057\u6574\u6570\u578b<\/a> \u3068\u3044\u3046 2 \u3064\u306e\u4fbf\u5229\u306a\u6a5f\u80fd\u304c\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306b\u5bfe\u3057\u3001<code>kotlinx.serialization<\/code> 1.2 \u3067\u306f\u3001JSON \u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u304a\u3088\u3073\u30c7\u30b3\u30fc\u30c9\u306b\u5bfe\u3059\u308b\u30d5\u30a1\u30fc\u30b9\u30c8\u30af\u30e9\u30b9\u306e\u30b5\u30dd\u30fc\u30c8\u304c\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002 \u3067\u306f\u3001\u8a73\u3057\u304f\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u5024\u30af\u30e9\u30b9\u306e\u30b5\u30dd\u30fc\u30c8<\/h3>\n<p><a href=\"https:\/\/kotlinlang.org\/docs\/inline-classes.html\" target=\"_blank\" rel=\"noopener\">\u5024\u30af\u30e9\u30b9<\/a> (\u65e7\u540d <em>inline \u30af\u30e9\u30b9<\/em>) \u306f\u3001Kotlin \u306e\u5225\u306e\u578b (number \u306a\u3069) \u3092\u5b9f\u884c\u6642\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u5897\u3084\u3055\u305a\u306b\u578b\u5b89\u5168\u306a\u624b\u6bb5\u3092\u4f7f\u3063\u3066\u30e9\u30c3\u30d7\u3059\u308b\u305f\u3081\u306e\u65b9\u6cd5\u3067\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u3088\u308a\u8a73\u7d30\u306b\u8868\u73fe\u3067\u304d\u308b\u307b\u304b\u3001\u5b89\u5168\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u305f\u3081\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4f4e\u4e0b\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><code>kotlinx.serialization<\/code> \u306b\u5099\u3048\u3089\u308c\u3066\u3044\u308b JSON \u306e\u30b7\u30ea\u30a2\u30eb\u5316\u6a5f\u80fd\u306f\u5024\u30af\u30e9\u30b9\u306b\u5bfe\u3057\u3066\u3082\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002 Kotlin \u306e\u4ed6\u306e\u30af\u30e9\u30b9\u3068\u540c\u69d8\u306b\u3001<code>value class<\/code> \u306b <code>@Serializable<\/code> \u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4ed8\u3051\u308b\u3060\u3051\u3067 OK \u3067\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\n@Serializable\nvalue class Color(val rgb: Int)\n<\/pre>\n<p>\u5024\u30af\u30e9\u30b9\u306f\u3001\u305d\u306e\u57fa\u5e95\u578b\u3068\u3057\u3066\u76f4\u63a5\u4fdd\u5b58 (\u304a\u3088\u3073\u30b7\u30ea\u30a2\u30eb\u5316) \u3055\u308c\u307e\u3059\u3002 \u3053\u308c\u306f\u3001<code>value class<\/code> \u578b\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30b7\u30ea\u30a2\u30eb\u5316\u53ef\u80fd\u306a<code>\u30c7\u30fc\u30bf\u30af\u30e9\u30b9<\/code>\u306b\u8ffd\u52a0\u3057\u3001\u305d\u306e\u51fa\u529b\u3092\u691c\u67fb\u3059\u308c\u3070\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\n\n@Serializable\ndata class NamedColor(val color: Color, val name: String)\nfun main() {\nprintln(Json.encodeToString(NamedColor(Color(0), &quot;black&quot;)))\n}\n\n\/\/ {&quot;color&quot;: 0, &quot;name&quot;: &quot;black&quot;}\n<\/pre>\n<p>\u4e0a\u306e\u4f8b\u306e <code>NamedColor<\/code> \u3067\u306f\u3001<code>\u5024\u30af\u30e9\u30b9<\/code> <code>Color<\/code> \u304c <em>\u57fa\u5e95\u306e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b<\/em> (<code>Int<\/code>) \u3068\u3057\u3066\u6271\u308f\u308c\u3066\u3044\u307e\u3059\u3002 \u3064\u307e\u308a\u3001\u3053\u3046\u3057\u305f\u578b\u3092\u6b63\u78ba\u306b\u30b7\u30ea\u30a2\u30eb\u5316\u3057\u305f\u8868\u73fe\u306e\u30e1\u30ea\u30c3\u30c8\u3092\u5f97\u306a\u304c\u3089\u3001Kotlin \u30b3\u30fc\u30c9\u5185\u3067\u6700\u5927\u306e\u578b\u5b89\u5168\u3092\u6d3b\u7528\u3067\u304d\u3001\u4e0d\u8981\u306a\u30dc\u30c3\u30af\u30b9\u5316\u3084\u30cd\u30b9\u30c8\u306f\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u5024\u30af\u30e9\u30b9\u7528\u306e\u30ab\u30b9\u30bf\u30e0\u30b7\u30ea\u30a2\u30e9\u30a4\u30b6\u306e\u30c7\u30b6\u30a4\u30f3\u306f\u3001\u73fe\u5728\u3082\u6539\u826f\u4e2d\u3067\u3059\u306e\u3067\u3001\u73fe\u6642\u70b9\u3067\u3082\u5b9f\u9a13\u7684\u306a\u4f7f\u7528\u3068\u306a\u3063\u3066\u307e\u3059\u3002 \u3053\u306e\u30c8\u30d4\u30c3\u30af\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306f\u3001<a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/blob\/master\/docs\/inline-classes.md#using-inline-classes-in-your-custom-serializers\" target=\"_blank\" rel=\"noopener\">GitHub \u306b\u8a18\u8f09\u306e\u3053\u3061\u3089\u306e docs<\/a> \u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u7b26\u53f7\u306a\u3057\u6574\u6570\u306e\u30b5\u30dd\u30fc\u30c8<\/h3>\n<p><a href=\"https:\/\/kotlinlang.org\/docs\/basic-types.html#unsigned-integers\" target=\"_blank\" rel=\"noopener\">\u7b26\u53f7\u306a\u3057\u6574\u6570<\/a>\u306f\u3001Kotlin \u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u65b0\u305f\u306b\u52a0\u308f\u3063\u305f\u7a2e\u985e\u306e\u6574\u6570\u3067\u3001<em>\u8ca0\u4ee5\u5916\u306e\u6570\u5024<\/em>\u306e\u578b\u3092\u4f7f\u7528\u3057\u305f\u308a\u3001\u6f14\u7b97\u3092\u884c\u3063\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 Kotlin 1.5.0 \u306e\u30ea\u30ea\u30fc\u30b9\u306b\u3088\u308a\u3001\u4ee5\u4e0b\u306e\u7b26\u53f7\u306a\u3057\u6570\u5024\u578b\u3092\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li><code>UByte<\/code>\u30010\uff5e255 \u306e\u5024<\/li>\n<li><code>UShort<\/code>\u30010\uff5e65535 \u306e\u5024<\/li>\n<li><code>UInt<\/code>\u30010\uff5e2^32 \u2013 1 \u306e\u5024<\/li>\n<li><code>ULong<\/code>\u30010\uff5e2^64 \u2013 1 \u306e\u5024<\/li>\n<\/ul>\n<p><code>kotlinx.serialization<\/code> \u306e JSON \u30a8\u30f3\u30b3\u30fc\u30c0\u30fc\u3068\u30c7\u30b3\u30fc\u30c0\u30fc\u306f\u3001\u521d\u671f\u8a2d\u5b9a\u306e\u72b6\u614b\u3067\u3053\u308c\u3089\u306e\u578b\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002 \u4ed6\u306e\u6570\u5024\u578b\u3068\u540c\u69d8\u306b\u3001\u7b26\u53f7\u306a\u3057\u6574\u6570\u578b\u3082\u5207\u308a\u6368\u3066\u3084\u30e9\u30c3\u30d4\u30f3\u30b0\u3001\u7b26\u53f7\u4ed8\u304d\u306e\u578b\u3078\u306e\u5909\u63db\u306a\u3069\u306f\u3055\u308c\u305a\u306b\u3001\u901a\u5e38\u306e\u6570\u5024\u8868\u73fe (<code>.toString<\/code> \u3092\u547c\u3073\u51fa\u3057\u305f\u3068\u304d\u3068\u540c\u3058\u8868\u73fe) \u3067\u30b7\u30ea\u30a2\u30eb\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\n@Serializable\nclass Counter(val counted: UByte, val description: String)\n\n@Serializable\nclass BigCounter(val counted: ULong)\n\nval counted = 239.toUByte()\nprintln(Json.encodeToString(Counter(counted, &quot;tries&quot;)))\n\/\/ {&quot;counted&quot;:239,&quot;description&quot;:&quot;tries&quot;}\n\nprintln(Json.encodeToString(BigCounter(ULong.MAX_VALUE)))\n\/\/ {&quot;counted&quot;:18446744073709551615}\n<\/pre>\n<p>\u5024\u30af\u30e9\u30b9\u3068\u7b26\u53f7\u306a\u3057\u6574\u6570\u306e\u4f7f\u7528\u306f\u3001\u73fe\u5728 JSON \u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u4eca\u5f8c\u306e\u30ea\u30ea\u30fc\u30b9\u3067\u306f\u3001CBOR \u3068 Protobuf \u306e\u76f4\u63a5\u7684\u306a\u7d71\u5408\u3082\u63d0\u4f9b\u3057\u307e\u3059\u306e\u3067\u3001\u3054\u671f\u5f85\u304f\u3060\u3055\u3044\uff01<\/p>\n<p><code>kotlinx.serialization<\/code> \u3084\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e Kotlin \u306e\u4eca\u5f8c\u306e\u30ea\u30ea\u30fc\u30b9\u306b\u95a2\u3059\u308b\u6700\u65b0\u60c5\u5831\u3092\u628a\u63e1\u3057\u3066\u304a\u304d\u305f\u3044\u65b9\u306f\u3001\u672c\u30d6\u30ed\u30b0\u8a18\u4e8b\u306e\u6a2a\u306b\u3042\u308b\u30d5\u30a9\u30fc\u30e0\u3088\u308a <em>Kotlin \u88fd\u54c1\u306e\u6700\u65b0\u60c5\u5831\u306b\u95a2\u3059\u308b\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u306b\u767b\u9332<\/em>\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><code>kotlinx.serialization<\/code> \u306b\u304a\u3051\u308b\u5024\u30af\u30e9\u30b9\u3068\u7b26\u53f7\u306a\u3057\u578b\u306e\u4f7f\u7528\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306f\u3001<a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/blob\/master\/docs\/inline-classes.md\" target=\"_blank\" rel=\"noopener\">documentation on GitHub<\/a> \u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><a name=\"alt-names\"><\/a><\/p>\n<h2>JSON \u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u4f7f\u3046\u4ee3\u66ff\u540d\u306e\u30b5\u30dd\u30fc\u30c8<\/h2>\n<p>\u5f8c\u65b9\u4e92\u63db\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306a\u3069\u306e\u7406\u7531\u304b\u3089\u3001\u610f\u5473\u306f\u540c\u3058\u3067\u3082\u3001\u540d\u524d\u304c\u7570\u306a\u308b JSON \u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30d1\u30fc\u30b9\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002 \u65b0\u3057\u3044 <code>@JsonNames<\/code> \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u3048\u3070\u3001JSON \u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u4ee3\u66ff\u540d\u3092\u4ed8\u3051\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u4ee3\u66ff\u540d\u306f\u30c7\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u901a\u3057\u3066\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3092\u8aac\u660e\u3059\u308b\u305f\u3081\u306b\u3001\u4f8b\u3092 1 \u3064\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002 \u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u4ee5\u4e0b\u306e 2 \u3064\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u3069\u3061\u3089\u304b\u3092\u8fd4\u3059\u3068\u4eee\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\n{&quot;name&quot;:&quot;kotlinx.serialization&quot;}\n\/* ...or: *\/\n{&quot;title&quot;:&quot;kotlinx.serialization&quot;}\n<\/pre>\n<p><code>name<\/code> \u3068 <code>title<\/code> \u306f\u3001\u3068\u3082\u306b\u540c\u3058\u610f\u5473\u3092\u6301\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u3053\u308c\u3089\u3092\u79c1\u305f\u3061\u306e Kotlin \u30af\u30e9\u30b9\u5185\u306b\u3042\u308b\u540c\u3058\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u3057\u305f\u3044\u3068\u3057\u307e\u3059\u3002 \u65b0\u3057\u3044 <code>@JsonNames<\/code> \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308c\u3070\u3001<code>title<\/code> \u3092 <code>name<\/code> \u30ad\u30fc\u306e\u4ee3\u66ff\u30ad\u30fc\u3068\u3057\u3066\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\n@Serializable\ndata class Project(@JsonNames(&quot;title&quot;) val name: String)\n<\/pre>\n<p>\u3053\u308c\u306f\u3001\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3068\u30c7\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u4e21\u65b9\u3067<em>\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u540d\u524d\u5909\u66f4<\/em>\u3092\u8a31\u53ef\u3059\u308b\u4e00\u65b9\u3067\u3001<em>\u4ee3\u66ff\u306e\u6307\u5b9a<\/em>\u306f\u8a31\u53ef\u3057\u306a\u3044\u3068\u3044\u3046 <code>@SerialName<\/code> \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u306f\u7570\u306a\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u540c\u3058\u5024\u3092\u610f\u5473\u3059\u308b\u304c\u9055\u3046\u540d\u524d\u3092\u6301\u3064\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u8fd4\u3059\u30b5\u30fc\u30d3\u30b9\u306e\u64cd\u4f5c\u3084\u30b9\u30ad\u30fc\u30de\u306e\u79fb\u884c\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30b9\u30e0\u30fc\u30ba\u306a\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u304c\u7c21\u5358\u306b\u884c\u3048\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u3092\u671f\u5f85\u3057\u3066\u3044\u307e\u3059\uff01<\/p>\n<p><a name=\"api-docs\"><\/a><\/p>\n<h2>\u65b0\u3057\u304f\u306a\u3063\u305f API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/h2>\n<p><code>kotlinx.serialization<\/code> \u3092\u3067\u304d\u308b\u3060\u3051\u5b89\u5fc3\u3057\u3066\u3001\u697d\u3057\u304f\u5b66\u3093\u3067\u3044\u305f\u3060\u3051\u308b\u3088\u3046\u3001\u5f53\u793e\u306f\u6570\u591a\u304f\u306e\u53c2\u7167\u8cc7\u6599\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u306b\u52aa\u3081\u3066\u3044\u307e\u3059\u3002 \u305d\u306e 1 \u3064\u304c <a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/blob\/master\/docs\/serialization-guide.md\" target=\"_blank\" rel=\"noopener\">Kotlin Serialization Guide on GitHub<\/a> \u3067\u3059\u3002\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u63d0\u4f9b\u3059\u308b\u6a5f\u80fd\u306e\u624b\u5f15\u304d\u3068\u306a\u3063\u3066\u304a\u308a\u3001\u5927\u5207\u306a\u30dd\u30a4\u30f3\u30c8\u3092\u3059\u3079\u3066\u76db\u308a\u8fbc\u3093\u3060\u4f8b\u304c\u3044\u304f\u3064\u3082\u542b\u307e\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u5404\u6a5f\u80fd\u3092\u76f4\u611f\u7684\u306b\u7406\u89e3\u3067\u304d\u308b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ed6\u306b\u3082\u3001\u5168\u9762\u7684\u306b\u6539\u8a02\u3057\u305f <a href=\"https:\/\/kotlin.github.io\/kotlinx.serialization\/\" target=\"_blank\" rel=\"noopener\">kotlinx.serialization API documentation<\/a> \u304c\u3042\u308a\u307e\u3059\u3002 Kotlin \u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u30a8\u30f3\u30b8\u30f3 <a href=\"https:\/\/github.com\/Kotlin\/dokka\" target=\"_blank\" rel=\"noopener\">Dokka<\/a> \u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u57fa\u3065\u304d\u3001\u65b0\u3057\u3044 API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u306f\u3001\u65b0\u3057\u3044\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u304b\u3064\u30e2\u30c0\u30f3\u306a\u30c7\u30b6\u30a4\u30f3\u3084\u7406\u89e3\u3057\u3084\u3059\u3044\u30b7\u30f3\u30dc\u30eb\u304c\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2021\/04\/image1.png\" alt=\"\u65b0\u3057\u3044 API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u4f8b\u3001\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u306e\u306f JsonElement \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\" \/><\/p>\n<p align=\"center\"><a class=\"jb-download-button\" title=\"\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\" href=\"https:\/\/kotlin.github.io\/kotlinx.serialization\/\" target=\"_blank\" rel=\"noopener\">kotlinx.serialization \u306e\u65b0\u3057\u304f\u306a\u3063\u305f API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u8a73\u3057\u304f\u3054\u89a7\u304f\u3060\u3055\u3044\uff01<\/a><\/p>\n<p><a name=\"protobuf-schemas\"><\/a><\/p>\n<h2>Protobuf: Kotlin \u30af\u30e9\u30b9\u304b\u3089\u306e\u30b9\u30ad\u30fc\u30de\u751f\u6210\u306e\u5b9f\u9a13\u7684\u30b5\u30dd\u30fc\u30c8<\/h2>\n<p><a href=\"https:\/\/developers.google.com\/protocol-buffers\" target=\"_blank\" rel=\"noopener\">Protocol Buffers<\/a> (Protobuf) \u306f\u3001Google \u304c\u958b\u767a\u3057\u305f<em>\u30d0\u30a4\u30ca\u30ea\u30b7\u30ea\u30a2\u30eb\u5316\u306e\u5f62\u5f0f<\/em>\u3067\u3042\u308a\u3001\u69cb\u9020\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 \u30d0\u30a4\u30ca\u30ea\u5f62\u5f0f\u3067\u3042\u308b\u305f\u3081\u3001JSON \u3084 XML \u3088\u308a\u3082\u7a7a\u9593\u52b9\u7387\u304c\u512a\u308c\u3066\u3044\u308b\u3068\u540c\u6642\u306b\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u9593\u3067\u306e\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u4f7f\u7528\u3067\u304d\u308b<em>\u8a00\u8a9e\u306b\u4f9d\u5b58\u3057\u306a\u3044\u69cb\u9020<\/em>\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p><code>kotlinx.serialization<\/code> \u3067\u306f\u3001<em>\u5b9f\u9a13\u7684\u5b89\u5b9a\u6027\uff08experimental\uff09<\/em>\u3068\u3057\u3066<a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/blob\/master\/docs\/formats.md#protobuf-experimental\" target=\"_blank\" rel=\"noopener\">\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5bfe\u5fdc\u306e Protobuf \u3092\u4f7f\u3063\u305f\u30b7\u30ea\u30a2\u30eb\u5316<\/a> (<a href=\"https:\/\/developers.google.com\/protocol-buffers\/docs\/proto\" target=\"_blank\" rel=\"noopener\">proto2 \u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u3092\u4f7f\u7528<\/a>) \u3092\u884c\u3048\u307e\u3059\u3002 \u4ed6\u306e\u5f62\u5f0f\u3068\u540c\u69d8\u306b\u3001\u30af\u30e9\u30b9\u306f <code>@Serializable<\/code> \u3068\u3057\u3066\u6ce8\u91c8\u3057\u3001\u30d3\u30eb\u30c8\u30a4\u30f3\u30e1\u30bd\u30c3\u30c9 <code>encode<\/code> \/ <code>decode<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\n@Serializable\ndata class Project(val name: String, val language: String)\n\nfun main() {\nval data = Project(&quot;kotlinx.serialization&quot;, &quot;Kotlin&quot;)\nval bytes = ProtoBuf.encodeToByteArray(data)\nprintln(bytes.toAsciiHexString())\nval obj = ProtoBuf.decodeFromByteArray(bytes)\nprintln(obj)\n}\n<\/pre>\n<p>Kotlin \u30af\u30e9\u30b9\u3092\u3044\u308f\u3086\u308b<em>\u4fe1\u983c\u3067\u304d\u308b\u60c5\u5831\u6e90(source of truth)<\/em>\u3068\u3057\u3001\u307e\u305f\u4fbf\u5229\u306a<a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/blob\/master\/docs\/formats.md#protobuf-experimental\" target=\"_blank\" rel=\"noopener\">\u30ab\u30b9\u30bf\u30de\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3<\/a>\u3082\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001 <code>kotlinx.serialization<\/code> \u306f\u3001\u30c7\u30fc\u30bf\u306e\u30d0\u30a4\u30ca\u30ea\u30b9\u30ad\u30fc\u30de\u3092\u63a8\u8ad6\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308aProtobuf \u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3092<em>\u8907\u6570\u306e Kotlin \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u9593\u3067\u7c21\u6f54\u3067\u4fbf\u5229\u306b\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/em><\/p>\n<p><code>kotlinx.serialization<\/code> 1.2 \u306b\u306f\u3001<em>Protocol Buffers \u306e\u5b9f\u9a13\u7684\u306a\u30b9\u30ad\u30fc\u30de\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc<\/em>\u3082\u642d\u8f09\u3055\u308c\u307e\u3057\u305f\u3002 Kotlin \u306e\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u304b\u3089 <code>.proto<\/code> \u30d5\u30a1\u30a4\u30eb\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u305d\u308c\u3092\u4f7f\u3063\u3066 Python \u3084 C++, TypeScript \u306a\u3069\u3001\u4ed6\u306e\u8a00\u8a9e\u3067\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u30b9\u30ad\u30fc\u30de\u3092\u8868\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u65b0\u3057\u3044\u30b9\u30ad\u30fc\u30de\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u306e\u4f7f\u7528\u3092\u958b\u59cb\u3059\u308b\u624b\u9806\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/blob\/master\/docs\/formats.md#protobuf-experimental\" target=\"_blank\" rel=\"noopener\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u306e\u8a72\u5f53\u3059\u308b\u624b\u9806\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><code>.proto<\/code> \u30d5\u30a1\u30a4\u30eb\u304c\u751f\u6210\u3055\u308c\u305f\u3089\u3001\u30ea\u30dd\u30b8\u30c8\u30ea\u306b\u4fdd\u7ba1\u3057\u3001\u4ed6\u306e\u8a00\u8a9e\u3067\u8868\u73fe\u3055\u308c\u305f Kotlin \u30af\u30e9\u30b9\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001Kotlin \u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u5185\u3067\u76f4\u63a5\u30b9\u30ad\u30fc\u30de\u3092\u7ba1\u7406\u3067\u304d\u308b\u3068\u3044\u3046\u5229\u4fbf\u6027\u3092\u7dad\u6301\u3057\u306a\u304c\u3089\u3001<em>\u8907\u6570\u8a00\u8a9e\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/em>\u3067\u3082 <code>kotlinx.serialization<\/code> \u304c\u63d0\u4f9b\u3059\u308b Protobuf \u3068\u306e\u7d71\u5408\u3092\u7c21\u5358\u306b\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u3092\u671f\u5f85\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f Protobuf \u30b9\u30ad\u30fc\u30de\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u306e<em>\u6700\u521d\u306e\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3<\/em>\u3068\u3044\u3046\u3053\u3068\u3082\u3042\u308a\u3001\u7686\u3055\u307e\u304b\u3089\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u7279\u306b\u91cd\u8981\u8996\u3057\u3066\u3044\u307e\u3059\u3002 \u662f\u975e\u3068\u3082\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002\u7686\u3055\u307e\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3001\u30e2\u30c7\u30eb\u3084 <code>.proto<\/code> \u30d5\u30a1\u30a4\u30eb\u306e\u7ba1\u7406\u65b9\u6cd5\u3001\u76f4\u9762\u3057\u305f\u554f\u984c\u3001\u3042\u308c\u3070\u3044\u3044\u306a\u3068\u601d\u308f\u308c\u308b\u6a5f\u80fd\u306a\u3069\u3092 <a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/issues\" target=\"_blank\" rel=\"noopener\">GitHub \u306e\u8ab2\u984c\u30c8\u30e9\u30c3\u30ab\u30fc<\/a>\u3088\u308a\u77e5\u3089\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30b9\u30ad\u30fc\u30de\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u3044\u304f\u3064\u304b\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002 \u5927\u307e\u304b\u306a\u539f\u5247\u3068\u3057\u3066\u306f\u3001<code>kotlinx.serialization<\/code> \u306b\u642d\u8f09\u3055\u308c\u3066\u3044\u308b protobuf \u306e\u5b9f\u88c5\u3092\u4f7f\u3063\u3066 Kotlin \u30af\u30e9\u30b9\u3092\u30b7\u30ea\u30a2\u30eb\u5316\u3067\u304d\u308b\u5834\u5408\u306f\u3001\u30b9\u30ad\u30fc\u30de\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u304c\u305d\u308c\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u306f\u3001<a href=\"https:\/\/kotlin.github.io\/kotlinx.serialization\/kotlinx-serialization-protobuf\/kotlinx-serialization-protobuf\/kotlinx.serialization.protobuf\/-proto-buf\/index.html\" target=\"_blank\" rel=\"noopener\">\u540c\u3058\u5236\u9650<\/a>\u304c\u9069\u7528\u3055\u308c\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3082\u3042\u308a\u307e\u3059\u3002 \u4ee5\u4e0b\u3001\u6ce8\u610f\u70b9\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>Kotlin \u306e<em>\u30af\u30e9\u30b9\u540d\u3068\u30d7\u30ed\u30d1\u30c6\u30a3\u540d<\/em>\u306f\u3001<a href=\"https:\/\/developers.google.com\/protocol-buffers\/docs\/reference\/proto2-spec\" target=\"_blank\" rel=\"noopener\">protobuf \u306e\u4ed5\u69d8<\/a>\u306b\u6e96\u62e0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u4e0d\u6b63\u306a\u6587\u5b57\u3092\u542b\u307e\u306a\u3044\u3002<\/li>\n<li>Kotlin \u306e <em>null \u8a31\u5bb9\u6027<\/em>\u306f\u30b9\u30ad\u30fc\u30de\u306b\u53cd\u6620\u3055\u308c\u306a\u3044 (proto2 \u306f\u305d\u308c\u5c02\u7528\u306e\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u3092\u6301\u305f\u306a\u3044\u305f\u3081)\u3002 Protocol Buffer \u304c\u63d0\u4f9b\u3059\u308b<em>\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u30d5\u30a3\u30fc\u30eb\u30c9<\/em>\u306f\u3001Kotlin \u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u304c<em>\u30c7\u30d5\u30a9\u30eb\u30c8\u5024<\/em>\u3092\u5b9a\u7fa9\u3059\u308b\u304b\u3069\u3046\u304b\u306b\u57fa\u3065\u3044\u3066\u4f7f\u7528\u3055\u308c\u308b\u3002<\/li>\n<li>Kotlin \u306e<em>\u30c7\u30d5\u30a9\u30eb\u30c8\u5024<\/em>\u306f\u30b9\u30ad\u30fc\u30de\u306b\u542b\u307e\u308c\u306a\u3044\u3002 (\u3064\u307e\u308a\u3001\u5225\u306e\u8a00\u8a9e\u3067\u306e\u5b9f\u88c5\u306b\u304a\u3044\u3066\u3082\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u4e00\u8cab\u6027\u3092\u81ea\u3089\u4fdd\u8a3c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002)<\/li>\n<\/ul>\n<p><a name=\"start-using\"><\/a><\/p>\n<h2>kotlinx.serialization 1.2 \u3092\u3054\u4f7f\u7528\u304f\u3060\u3055\u3044\uff01<\/h2>\n<p>\u672c\u30ea\u30ea\u30fc\u30b9\u306e\u6982\u8981\u306f\u4ee5\u4e0a\u3067\u3059\uff01 <em>JSON \u306e\u9ad8\u901f\u5316\u3055\u308c\u305f\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30fb\u30c7\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6a5f\u80fd \u3084 Kotlin 1.5 \u3067\u65b0\u305f\u306b\u8ffd\u52a0\u3055\u308c\u305f\u578b\u30b7\u30b9\u30c6\u30e0\u306e\u30b5\u30dd\u30fc\u30c8\u3001Protobuf \u306e\u30b9\u30ad\u30fc\u30de\u751f\u6210\u306a\u3069<\/em>\u3092\u3055\u3063\u305d\u304f\u6d3b\u7528\u3057\u305f\u3044\u3068\u3044\u3046\u65b9\u306f\u3001\u4eca\u3059\u3050\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<p><code>kotlinx.serialization<\/code> \u3092\u65e2\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u65b9\u306f\u3001\u30d0\u30fc\u30b8\u30e7\u30f3 1.2 \u306b\u3059\u3070\u3084\u304f\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3057\u3066\u3044\u305f\u3060\u3051\u307e\u3059 (<code>kotlinx.serialization<\/code> \u3092\u307e\u3060\u304a\u8a66\u3057\u3067\u306a\u3044\u65b9\u306f\u3001\u662f\u975e\u3053\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u59cb\u3081\u3066\u304f\u3060\u3055\u3044\uff01) \u307e\u305a\u306f\u3001<code>build.gradle.kts<\/code> \u30d5\u30a1\u30a4\u30eb\u306e <code>plugins<\/code> \u30d6\u30ed\u30c3\u30af\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\nplugins {\nkotlin(&quot;jvm&quot;) version &quot;1.5.0&quot; \/\/ or kotlin(&quot;multiplatform&quot;) or any other kotlin plugin\nkotlin(&quot;plugin.serialization&quot;) version &quot;1.5.0&quot;\n}\n<\/pre>\n<p>\u305d\u3057\u3066\u3001\u30e9\u30f3\u30bf\u30a4\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u00a0<code>dependencies<\/code> \u30d6\u30ed\u30c3\u30af\u3092\u66f4\u65b0\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u4f7f\u7528\u3059\u308b\u5f62\u5f0f\u306a\u3069\u3082\u4e00\u7dd2\u306b\u66f4\u65b0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" theme=\"idea\" indent=\"4\" style=\"visibility: hidden; padding: 36px 0;\">\ndependencies {\nimplementation(&quot;org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.1&quot;)\nimplementation(&quot;org.jetbrains.kotlinx:kotlinx-serialization-protobuf:1.2.1&quot;)\n\/\/ . . .\n}\n<\/pre>\n<h2>\u52d5\u753b\u3068\u305d\u306e\u4ed6\u306e\u60c5\u5831<\/h2>\n<ul>\n<li><a href=\"https:\/\/youtu.be\/698I_AH8h6s\" target=\"_blank\" rel=\"noopener\">kotlinx.serialization 1.2 \u306e\u52d5\u753b<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/\" target=\"_blank\" rel=\"noopener\">GitHub \u306e\u30e9\u30a4\u30d6\u30e9\u30ea<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/blob\/master\/docs\/serialization-guide.md\" target=\"_blank\" rel=\"noopener\">kotlinx.serialization \u4f7f\u7528\u30ac\u30a4\u30c9<\/a><\/li>\n<li><a href=\"https:\/\/kotlin.github.io\/kotlinx.serialization\/\" target=\"_blank\" rel=\"noopener\">API \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a><\/li>\n<li><a href=\"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2021\/05\/kotlin-1-5-0-released\/\">Kotlin 1.5.0 \u30ea\u30ea\u30fc\u30b9\u306b\u95a2\u3059\u308b\u30d6\u30ed\u30b0\u8a18\u4e8b<\/a><\/li>\n<\/ul>\n<h3>\u554f\u984c\u306b\u76f4\u9762\u3057\u305f\u5834\u5408<\/h3>\n<ul>\n<li>\u554f\u984c\u3092 <a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\/issues\" target=\"_blank\" rel=\"noopener\">GitHub \u306e\u8ab2\u984c\u30c8\u30e9\u30c3\u30ab\u30fc<\/a>\u306b\u5831\u544a\u3059\u308b\u3002<\/li>\n<li>Kotlin Slack \u306e #serialization \u30c1\u30e3\u30f3\u30cd\u30eb\u3067\u30d8\u30eb\u30d7\u3092\u6c42\u3081\u308b (<a href=\"https:\/\/surveys.jetbrains.com\/s3\/kotlin-slack-sign-up\" target=\"_blank\" rel=\"noopener\">\u62db\u5f85\u3092\u53d7\u3051\u308b<\/a>)\u3002<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.youtube.com\/channel\/UCP7uiEZIqci43m22KDl0sNw?sub_confirmation=1\" target=\"_blank\" rel=\"noopener\">Kotlin YouTube \u30c1\u30e3\u30f3\u30cd\u30eb\u306b\u3054\u767b\u9332\u304f\u3060\u3055\u3044\uff01<\/a> \u697d\u3057\u304f (\u30c7) \u30b7\u30ea\u30a2\u30eb\u5316\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n","protected":false},"author":811,"featured_media":137329,"comment_status":"closed","ping_status":"closed","template":"","categories":[909],"tags":[671],"cross-post-tag":[],"acf":[],"_links":{"self":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/147824"}],"collection":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin"}],"about":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/types\/kotlin"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/users\/811"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/comments?post=147824"}],"version-history":[{"count":9,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/147824\/revisions"}],"predecessor-version":[{"id":147847,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/147824\/revisions\/147847"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/media\/137329"}],"wp:attachment":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/media?parent=147824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/categories?post=147824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/tags?post=147824"},{"taxonomy":"cross-post-tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/cross-post-tag?post=147824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}