{"id":35,"date":"2025-06-18T16:09:51","date_gmt":"2025-06-18T08:09:51","guid":{"rendered":"https:\/\/www.bqmz001.top\/?p=35"},"modified":"2025-06-18T16:09:51","modified_gmt":"2025-06-18T08:09:51","slug":"flutter-dio%e7%9a%84%e7%ae%80%e5%8d%95%e4%bd%bf%e7%94%a8%e4%bb%a5%e5%8f%8a%e7%ae%80%e5%8d%95%e5%b0%81%e8%a3%85","status":"publish","type":"post","link":"https:\/\/www.bqmz001.top\/index.php\/2025\/06\/18\/flutter-dio%e7%9a%84%e7%ae%80%e5%8d%95%e4%bd%bf%e7%94%a8%e4%bb%a5%e5%8f%8a%e7%ae%80%e5%8d%95%e5%b0%81%e8%a3%85\/","title":{"rendered":"flutter dio\u7684\u7b80\u5355\u4f7f\u7528\u4ee5\u53ca\u7b80\u5355\u5c01\u88c5"},"content":{"rendered":"

1\u3001\u6beb\u65e0\u7591\u95ee\uff0cpubspec.yaml\u5f15\u5165<\/h2>\n
dependencies:\n  flutter:\n    sdk: flutter\n  cupertino_icons: ^1.0.8\n  dio: ^5.8.0+1\n  provider: ^6.1.5\n<\/code><\/pre>\n
provider\u8fd8\u662f\u6709\u5fc5\u8981\u5b58\u5728\u7684<\/strong><\/em>  <\/p>\n
2\u3001\u6765\u4e2aStatelessWidget<\/h2>\n
main.dart<\/h5>\n
import 'package:day01\/main_provider.dart';\nimport 'package:flutter\/material.dart';\nimport 'package:provider\/provider.dart';\n\nvoid main() {\n  runApp(\n    MultiProvider(\n      providers: [ChangeNotifierProvider(create: (context) => MainProvider())],\n      child: MyApp(),\n    ),\n  );\n}\n\nclass MyApp extends StatelessWidget {\n  const MyApp({super.key});\n  @override\n  Widget build(BuildContext context) {\n    return MaterialApp(\n      title: 'Flutter Demo',\n      theme: ThemeData(\n        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),\n      ),\n      home: const MyHomePage(title: 'Flutter Demo Home Page'),\n    );\n  }\n}\n\nclass MyHomePage extends StatelessWidget {\n  const MyHomePage({super.key, required this.title});\n\n  final String title;\n\n  @override\n  Widget build(BuildContext context) {\n    final provider = Provider.of<MainProvider>(context);\n\n    return Scaffold(\n      appBar: AppBar(\n        backgroundColor: Theme.of(context).colorScheme.inversePrimary,\n        title: Text(title),\n      ),\n      body: Center(\n        child: Column(\n          mainAxisAlignment: MainAxisAlignment.center,\n          children: <Widget>[\n            Text(provider.text),\n            ElevatedButton(\n              onPressed: provider.getList,\n              child: const Text('\u8bf7\u6c42\u6570\u636e'),\n            ),\n          ],\n        ),\n      ),\n    );\n  }\n}\n<\/code><\/pre>\n
\u8fd9\u91cc\u8fd8\u662fStatelessWidget\uff0c\u72b6\u6001\u6211\u6682\u65f6\u662f\u6253\u7b97\u5168\u6254\u5230provider\u91cc\u53bb\u7ba1\u7406\uff0c\u6240\u4ee5\u73b0\u5728\u83ab\u614c\uff0c\u63a5\u4e0b\u6765\u6574provider\u3002  <\/p>\n
3\u3001\u8865\u4e0a\u521a\u4e0a\u6765\u7684MainProvider<\/h2>\n
main_provider.dart<\/h5>\n
import 'dart:convert';\n\nimport 'package:day01\/bean\/base_bean.dart';\nimport 'package:dio\/dio.dart';\nimport 'package:flutter\/cupertino.dart';\n\nclass MainProvider with ChangeNotifier {\n\n  String _text = '';\n  String get text => _text;\n\n  void getHello() async {\n    try{\n      var response=await Dio().get("http:\/\/192.168.5.116:20080\/contact\/helloworld");\n      _text=BaseBean.fromJson(response.data).data.toString();\n    }catch(e){\n      _text='\u8bf7\u6c42\u51fa\u9519\u4e86\uff1a$e';\n    }\n    notifyListeners();\n  }\n}\n<\/code><\/pre>\n
\u5230\u8fd9\u91cc\u5c31\u53ef\u4ee5\u8fd0\u884c\u4e00\u4e0b\uff0c\u7406\u60f3\u6548\u679c\u662f\uff1a\u70b9\u51fb\u4e00\u4e0b\u8bf7\u6c42\u6570\u636e\u6309\u94ae\uff0c\u8c03\u7528provider\u7684getHello\u65b9\u6cd5\uff0c\u7136\u540e\u8bf7\u6c42\u4e00\u4e2ademo\u63a5\u53e3\uff0c\u8fd4\u56de\u4e00\u4e2ahello\u5b57\u7b26\uff0c\u901a\u8fc7notifyListeners()\u66f4\u65b0\u4ece\u800c\u663e\u793a\u5230\u9875\u9762\u7684Text\u4e0a\u3002<\/p>\n
\u597d\u4e86\u95ee\u9898\u6765\u4e86\uff1a\u6211\u603b\u4e0d\u80fd\u6bcf\u8bf7\u6c42\u4e00\u6b21\u5c31new\u4e00\u4e2aDio()\u5427<\/strong>
flutter\u518d\u7b80\u5355dio\u518d\u597d\u7528\uff0c\u4e5f\u7981\u4e0d\u4f4f\u8fd9\u4e48\u4e2a\u9020\u6cd5\u554a~\u505a\u5b89\u5353\u5f00\u53d1\u7684\u4f60\u6bcf\u6b21\u8bf7\u6c42\u90fdnew\u4e00\u4e2aRetrofit\u6216\u8005OkHttp\u4f60\u8bd5\u8bd5\uff0c\u4fdd\u8bc1\u6572\u4f60\u72d7\u5934!<\/p>\n
4\u3001\u4e0a\u83dc\uff01Dio\u5c01\u88c5\uff01<\/h2>\n
\u65e2\u7136\u90fd\u505a\u5c01\u88c5\u4e86\uff0c\u5355\u4f8b<\/strong>\u603b\u5f97\u6709\u5427\uff0cbaseUrl<\/strong>\u603b\u5f97\u6709\u5427\uff0c\u7b80\u5355\u7684\u62e6\u622a\u5668<\/strong>\u4e5f\u603b\u5f97\u6709\u5427<\/p>\n
dio_util.dart<\/h5>\n
import 'package:dio\/dio.dart';\n\nclass DioUtil {\n  String _baseUrl = 'http:\/\/192.168.5.116:20080';\n\n  static DioUtil _instance = DioUtil._internal();\n  Dio? _dio;\n\n  factory DioUtil() => _instance;\n\n  static DioUtil getInstance() => _instance;\n\n  DioUtil._internal() {\n    _dio = Dio(BaseOptions(baseUrl: _baseUrl));\n    _dio!.interceptors.add(LogInterceptor(responseBody: true));\n  }\n\n  get(\n    String url,\n    Map<String, dynamic>? queryParameters,\n    Function() load,\n    Function(dynamic data) success,\n    Function(String reason) fail,\n  ) async {\n    load();\n    var response = await _dio!.get(url, queryParameters: queryParameters);\n    if (response.statusCode == 200) {\n      if (response.data['code'] == 200) {\n        success(response.data);\n      } else {\n        fail(response.data['msg']);\n      }\n    } else {\n      fail(response.statusCode!.toString() + "_" + response.statusMessage!);\n    }\n  }\n\n  post(\n      String url,\n      Object? data,\n      Function() load,\n      Function(dynamic data) success,\n      Function(String reason) fail) async{\n    load();\n    var response = await _dio!.post(url, data: data);\n    if (response.statusCode == 200) {\n      if (response.data['code'] == 200) {\n        success(response.data);\n      } else {\n        fail(response.data['msg']);\n      }\n    } else {\n      fail(response.statusCode!.toString() + "_" + response.statusMessage!);\n    }\n  }\n\n  addHeader(String key, String value) {\n    _dio!.options.headers[key] = value;\n  }\n}\n<\/code><\/pre>\n
\u597d\u7684\uff0c\u5355\u4f8b\u6709\u4e86\uff0c\u5355\u4f8b\u8303\u4f8b\u5728\u6b64\uff1a<\/p>\n
class Singleton {\n  static final Singleton _singleton = Singleton._internal();\n\n  factory Singleton() => _singleton;\n\n  Singleton._internal() {\n    \/\/ TODO\n  }\n}\n<\/code><\/pre>\n
\u770b\u6837\u5b50\u7167\u7740\u6284\u5c31\u884c<\/p>\n
_dio!.interceptors.add(LogInterceptor(responseBody: true))\n<\/code><\/pre>\n
\u8fd9\u4e2a\u662f\u6dfb\u52a0\u81ea\u5e26\u7684\u65e5\u5fd7\u62e6\u622a\u5668\u7684\uff0c\u7528\u4e8e\u6253\u5370\u8bf7\u6c42\u54cd\u5e94<\/p>\n
\u7136\u540e\u7ed9get\u548cpost\u6574\u4e86\u4e2a\u63a5-\u5316-\u53d1<\/strong>
\u63a5<\/strong>\uff1a\u89e6\u53d1load()\u51fd\u6570\uff0c\u7ed9\u524d\u7aef\u901a\u77e5\uff0c\u7136\u540e\u5f00\u59cb\u8bf7\u6c42
\u5316<\/strong>\uff1a\u8bf7\u6c42\u5230\u4e1c\u897f\u6ca1\uff0c\u6210\u529f\u4e86\u6ca1\uff0c\u4ee5\u53ca\u5404\u79cd\u6ca1\u6210\u529fcase
\u53d1<\/strong>\uff1a\u76f4\u63a5\u62fflambda\u8868\u8fbe\u5f0f\/\u51fd\u6570\uff08\u4e0d\u7ba1\u53eb\u5565\u90fd\u662f\u4e00\u4e2a\u610f\u601d\uff09\u628a\u521a\u624d\u5904\u7406\u597d\u7684\u7ed3\u679c\u6254\u51fa\u53bb<\/p>\n
\u6700\u540e\u518d\u5199\u4e00\u4e2a\u52a0token\u7684\u65b9\u6cd5\uff1a<\/p>\n
 addHeader(String key, String value) {\n    _dio!.options.headers[key] = value;\n  }\n<\/code><\/pre>\n
\u5199\u8fd9\u4e48\u7b80\u5355\u4ec5\u4e3a\u6f14\u793a\uff0c\u7406\u8bba\u4e0a\u8bb2\u5e94\u8be5\u662f\u6254Map<String,dynamic>\u7684<\/strong><\/em><\/p>\n
5\u3001dio\u5c01\u88c5\u597d\u4e86\u548b\u7528\uff1f<\/h2>\n
\u4e0a\u83dc\uff01<\/p>\n
main_provider.dart<\/h5>\n
import 'dart:convert';\n\nimport 'package:day01\/bean\/base_bean.dart';\nimport 'package:day01\/dio_util.dart';\nimport 'package:dio\/dio.dart';\nimport 'package:flutter\/cupertino.dart';\n\nclass MainProvider with ChangeNotifier {\n  String _text = '';\n\n  String get text => _text;\n\n\n  void getHello() async {\n    await DioUtil.getInstance().get("http:\/\/192.168.5.116:20080\/contact\/helloworld",null,(){\n      _text = "loading";\n      notifyListeners();\n    },(data){\n      BaseBean bean = BaseBean.fromJson(data);\n      _text = bean.data.toString();\n      notifyListeners();\n    },(reason){\n      _text = reason;\n      notifyListeners();\n\n    });\n  }\n}\n<\/code><\/pre>\n
\u9f50\u6d3b\uff01\u5b8c\u4e8b\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
1\u3001\u6beb\u65e0\u7591\u95ee\uff0cpubspec.yaml\u5f15\u5165 dependencies: flutter: sdk: flutt […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-35","post","type-post","status-publish","format-standard","hentry","category-androidflutter"],"_links":{"self":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/comments?post=35"}],"version-history":[{"count":45,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/35\/revisions"}],"predecessor-version":[{"id":80,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/35\/revisions\/80"}],"wp:attachment":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/media?parent=35"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/categories?post=35"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/tags?post=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}