{"id":564,"date":"2019-10-03T23:13:01","date_gmt":"2019-10-03T14:13:01","guid":{"rendered":"http:\/\/www.typea.info\/blog\/index.php\/2019\/10\/03\/flutter_httpclient\/"},"modified":"2020-04-27T23:04:42","modified_gmt":"2020-04-27T14:04:42","slug":"flutter_httpclient","status":"publish","type":"post","link":"https:\/\/www.typea.info\/blog\/index.php\/2019\/10\/03\/flutter_httpclient\/","title":{"rendered":"Flutter : HttpClient"},"content":{"rendered":"<p><a href=\"https:\/\/www.amazon.co.jp\/%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%9F%E3%83%B3%E3%82%B0%E8%A8%80%E8%AA%9EDart-%E3%82%A2%E3%82%B9%E3%82%AD%E3%83%BC%E6%9B%B8%E7%B1%8D-%EF%BC%A3%EF%BD%88%EF%BD%92%EF%BD%89%EF%BD%93-%EF%BC%A2%EF%BD%95%EF%BD%83%EF%BD%8B%EF%BD%85%EF%BD%94%EF%BD%94-ebook\/dp\/B00JB3CWZI\/ref=as_li_ss_il?__mk_ja_JP=%E3%82%AB%E3%82%BF%E3%82%AB%E3%83%8A&amp;keywords=Dart&amp;qid=1570111868&amp;sr=8-5&amp;linkCode=li2&amp;tag=typea09-22&amp;linkId=bb5da684cafb481fe12e583bcdda177d&amp;language=ja_JP\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" src=\"\/\/ws-fe.amazon-adsystem.com\/widgets\/q?_encoding=UTF8&amp;ASIN=B00JB3CWZI&amp;Format=_SL160_&amp;ID=AsinImage&amp;MarketPlace=JP&amp;ServiceVersion=20070822&amp;WS=1&amp;tag=typea09-22&amp;language=ja_JP\" border=\"0\"><\/a><img loading=\"lazy\" decoding=\"async\" width=\"1\" height=\"1\" style=\"margin: 0px !important; border: currentcolor !important; border-image: none !important;\" alt=\"\" src=\"https:\/\/ir-jp.amazon-adsystem.com\/e\/ir?t=typea09-22&amp;language=ja_JP&amp;l=li2&amp;o=9&amp;a=B00JB3CWZI\" border=\"0\"><\/p>\n<p>Xamarin \u2013&gt; Flutter \u306e\u6e96\u5099\u304c\u3067\u304d\u305f\u306e\u3067\u3001<\/p>\n<p><a href=\"https:\/\/www.typea.info\/blog\/index.php\/2019\/10\/03\/xamarin_flutter\">https:\/\/www.typea.info\/blog\/index.php\/2019\/10\/03\/xamarin_flutter<\/a><\/p>\n<p>\u306a\u308c\u308b\u305f\u3081\u306b\u3001\u57fa\u672c\u7684\u306a\u6a5f\u80fd\u3092\u8a66\u3057\u3066\u307f\u308b\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.typea.info\/blog\/index.php\/2019\/10\/03\/flutter\">\u753b\u9762\u9077\u79fb<\/a><\/li>\n<li><a href=\"https:\/\/www.typea.info\/blog\/index.php\/2019\/10\/03\/flutter_dialog\">Dialog<\/a><\/li>\n<\/ul>\n<p>\u306b\u7d9a\u3044\u3066\u3001HttpClient<\/p>\n<h2>HttpClient<\/h2>\n<p>\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u305f\u3089\u3001<a href=\"https:\/\/www.typea.info\/blog\/index.php\/2019\/04\/06\/google_app_engine_java_standard_spring_boot\">GAE\u306b\u7f6e\u3044\u305f\u758e\u901a\u7528\u306eAPI<\/a>\u3092\u547c\u3073\u51fa\u3057\u3066\u3001\u7d50\u679c\u3092\u30c0\u30a4\u30a2\u30ed\u30b0\u306b\u8868\u793a\u3057\u3066\u307f\u308b\u3002<\/p>\n<p>\u5408\u308f\u305b\u3066\u3001HTTP\u30d8\u30c3\u30c0\u306e\u5185\u5bb9\u3092\u30ed\u30b0\u306b\u5410\u304d\u51fa\u3059\u3002<\/p>\n<pre class=\"prettyprint linenums\">import 'dart:convert';\nimport 'dart:io';\n\nimport 'package:flutter\/material.dart';\n\nclass SecondRoute extends StatelessWidget{\n\n  Future&lt;void&gt; _handleHello(BuildContext context) async {\n    String message;\n    HttpClient client = new HttpClient();\n    await client.getUrl(Uri.parse(\"https:\/\/favophrase.com\/api\/hello\"))\n      .then((HttpClientRequest request) {\n        return request.close();\n      })\n      .then((HttpClientResponse response) {\n        print(\"&lt;status&gt; ${response.statusCode}\");\n        response.headers.forEach((k, v){\n          print(\"&lt;header&gt; $k:$v\");\n        });\n        response.transform(utf8.decoder).listen((contents){\n          print(\"&lt;contents&gt; $contents\");\n          message = contents;\n        });\n       });\n\n    return showDialog&lt;void&gt;(\n      context: context,\n      barrierDismissible: false,\n      builder: (BuildContext context) {\n        return AlertDialog(\n          title: Text('Hello'),\n          content: Column(\n            children: &lt;Widget&gt;[\n              Text(message),\n            ],\n          ),\n          actions: &lt;Widget&gt;[\n            FlatButton(\n              child: Text('OK'),\n              onPressed: () {\n                Navigator.of(context).pop();\n              },\n            ),\n          ],\n        );\n      },\n    );\n  }\n\n  @override\n  Widget build(BuildContext context) {\n    return Scaffold(\n      appBar: AppBar(),\n      body: Center(\n        child: Column(\n          children: &lt;Widget&gt;[\n            Text(\n              'Second Screen.',\n            ),\n            RaisedButton(\n              onPressed: (){\n                _handleHello(context);\n              },\n              child: Text('Hello'),\n            ),\n            RaisedButton(\n              onPressed: () {\n                Navigator.pop(context);\n              },\n              child: Text('Back'),\n            ),\n          ]\n        ),\n      ),\n    );\n  }\n}<\/pre>\n<p>\u30ed\u30b0\u306b\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3001HTTP\u30d8\u30c3\u30c0\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u51fa\u529b<\/p>\n<pre class=\"prettyprint linenums\">\n\n\n\n\n\n\n10-03 22:57:23.773 7372-7459\/info.typea.favo_phrase I\/flutter: &lt;status&gt; 200\n10-03 22:57:23.773 7372-7459\/info.typea.favo_phrase I\/flutter: &lt;header&gt; x-cloud-trace-context:[12a5548da17d4857f598d572e6a7437d;o=1]\n10-03 22:57:23.773 7372-7459\/info.typea.favo_phrase I\/flutter: &lt;header&gt; content-type:[text\/plain;charset=utf-8]\n10-03 22:57:23.773 7372-7459\/info.typea.favo_phrase I\/flutter: &lt;header&gt; date:[Thu, 03 Oct 2019 13:57:21 GMT]\n10-03 22:57:23.773 7372-7459\/info.typea.favo_phrase I\/flutter: &lt;header&gt; content-length:[42]\n10-03 22:57:23.773 7372-7459\/info.typea.favo_phrase I\/flutter: &lt;header&gt; server:[Google Frontend]\n10-03 22:57:23.793 7372-7459\/info.typea.favo_phrase I\/flutter: &lt;contents&gt; Hello. This is FavoPhrase Web Service API.\n<\/pre>\n<p><a href=\"https:\/\/www.typea.info\/blog\/wp-content\/uploads\/image\/Flutter--HttpClient_142FD\/flutter_httpclient1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"201\" height=\"355\" title=\"flutter_httpclient1\" style=\"display: inline; background-image: none;\" alt=\"flutter_httpclient1\" src=\"https:\/\/www.typea.info\/blog\/wp-content\/uploads\/image\/Flutter--HttpClient_142FD\/flutter_httpclient1_thumb.png\" border=\"0\"><\/a><\/p>\n<p>\u30a2\u30e9\u30fc\u30c8\u30c0\u30a4\u30a2\u30ed\u30b0\u306b\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u8868\u793a<\/p>\n<p><a href=\"https:\/\/www.typea.info\/blog\/wp-content\/uploads\/image\/Flutter--HttpClient_142FD\/flutter_httpclient2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"201\" height=\"354\" title=\"flutter_httpclient2\" style=\"display: inline; background-image: none;\" alt=\"flutter_httpclient2\" src=\"https:\/\/www.typea.info\/blog\/wp-content\/uploads\/image\/Flutter--HttpClient_142FD\/flutter_httpclient2_thumb.png\" border=\"0\"><\/a><\/p>\n<p>\u306a\u304b\u306a\u304b\u3044\u3044\u611f\u3058\u3060\u306a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Xamarin \u2013&gt; Flutter \u306e\u6e96\u5099\u304c\u3067\u304d\u305f\u306e\u3067\u3001 https:\/\/www.typea.info\/blog\/index.php\/2019\/10\/03\/xamarin_flutter \u306a\u308c\u308b\u305f\u3081\u306b\u3001\u57fa\u672c\u7684\u306a\u6a5f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","footnotes":""},"categories":[111],"tags":[],"class_list":["post-564","post","type-post","status-publish","format-standard","hentry","category-flutter"],"veu_head_title_object":{"title":"","add_site_title":""},"_links":{"self":[{"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/posts\/564","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=564"}],"version-history":[{"count":1,"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/posts\/564\/revisions"}],"predecessor-version":[{"id":743,"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/posts\/564\/revisions\/743"}],"wp:attachment":[{"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=564"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=564"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.typea.info\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=564"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}