{"id":4843,"date":"2024-03-14T13:58:24","date_gmt":"2024-03-14T04:58:24","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%a7protobuf%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e8%aa%ad%e3%81%bf%e8%be%bc%e3%82%93%e3%81%a7%e9%80%86%e3%82%b7%e3%83%aa%e3%82%a2%e3%83%ab%e5%8c%96%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-03T00:06:58","modified_gmt":"2025-08-02T15:06:58","slug":"c%e3%81%a7protobuf%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e8%aa%ad%e3%81%bf%e8%be%bc%e3%82%93%e3%81%a7%e9%80%86%e3%82%b7%e3%83%aa%e3%82%a2%e3%83%ab%e5%8c%96%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/c%e3%81%a7protobuf%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e8%aa%ad%e3%81%bf%e8%be%bc%e3%82%93%e3%81%a7%e9%80%86%e3%82%b7%e3%83%aa%e3%82%a2%e3%83%ab%e5%8c%96%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"C++\u3067Protobuf\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3067\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3059\u308b\u65b9\u6cd5\u306f\uff1f"},"content":{"rendered":"<p>C++\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3092\u884c\u3046\u305f\u3081\u306b\u3001Protobuf\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u6b21\u306e\u624b\u9806\u306b\u5f93\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u5fc5\u8981\u306a\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;fstream&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">\"your_protobuf_generated_header.pb.h\"<\/span><\/span>\r\n<\/code><\/pre>\n<ol>\n<li>\u30d5\u30a1\u30a4\u30eb\u3092\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3059\u308b\u305f\u3081\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304d\u3001\u305d\u306e\u4e2d\u306e\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-function\">std::ifstream <span class=\"hljs-title\">input<\/span><span class=\"hljs-params\">(<span class=\"hljs-string\">\"your_file_name\"<\/span>, std::ios::binary)<\/span><\/span>;\r\n<span class=\"hljs-keyword\">if<\/span> (!input) {\r\n    std::cerr &lt;&lt; <span class=\"hljs-string\">\"Failed to open input file.\"<\/span> &lt;&lt; std::endl;\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">-1<\/span>;\r\n}\r\n\r\nyour_protobuf_generated_message message;\r\n<span class=\"hljs-keyword\">if<\/span> (!message.<span class=\"hljs-built_in\">ParseFromIstream<\/span>(&amp;input)) {\r\n    std::cerr &lt;&lt; <span class=\"hljs-string\">\"Failed to parse input file.\"<\/span> &lt;&lt; std::endl;\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">-1<\/span>;\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3066\u3001\u51fa\u529b\u3084\u51e6\u7406\u306a\u3069\u306e\u64cd\u4f5c\u3092\u884c\u3046\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>std::cout &lt;&lt; <span class=\"hljs-string\">\"Deserialized message: \"<\/span> &lt;&lt; message.<span class=\"hljs-built_in\">DebugString<\/span>() &lt;&lt; std::endl;\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001your_protobuf_generated_header.pb.h\u306f.proto\u30d5\u30a1\u30a4\u30eb\u306b\u57fa\u3065\u3044\u3066\u751f\u6210\u3055\u308c\u305f\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u308a\u3001Protobuf\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5b9a\u7fa9\u3068\u95a2\u9023\u3059\u308b\u95a2\u6570\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002your_protobuf_generated_message\u306f\u3001\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u30bf\u30a4\u30d7\u3092\u5b9a\u7fa9\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>C++\u3067Protobuf\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u53d6\u308a\u3001\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3059\u308b\u5358\u7d14\u306a\u4f8b\u3092\u793a\u3057\u307e\u3057\u305f\u3002\u5177\u4f53\u7684\u306a\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u8abf\u6574\u3084\u62e1\u5f35\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C++\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3092\u884c\u3046\u305f\u3081\u306b\u3001Protobuf\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u6b21\u306e\u624b\u9806\u306b\u5f93\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u5fc5\u8981\u306a\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002 #include &lt;fstream&gt; # [&hellip;]<\/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-4843","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>C++\u3067Protobuf\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3067\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3059\u308b\u65b9\u6cd5\u306f\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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content=\"C++\u3067Protobuf\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3067\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3059\u308b\u65b9\u6cd5\u306f\uff1f\" \/>\n<meta property=\"og:description\" content=\"C++\u3067Protobuf\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3067\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3059\u308b\u65b9\u6cd5\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\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/c\u3067protobuf\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3093\u3067\u9006\u30b7\u30ea\u30a2\u30eb\u5316\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" 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