Flutter网络功能增强插件_iwu_pack_network的使用

在现代移动应用开发中，网络请求是一个非常重要的功能。为了简化网络请求的处理，我们推荐使用_iwu_pack_network插件。该插件不仅提供了简单的API接口，还增强了网络请求的功能，如超时控制、请求日志记录等。

插件安装

首先，在你的pubspec.yaml文件中添加以下依赖：

dependencies:
  _iwu_pack_network: ^1.0.0

然后运行以下命令来获取依赖：

flutter pub get

基本用法

导入插件

在你的Dart文件中导入插件：

import 'package:_iwu_pack_network/_iwu_pack_network.dart';

发送GET请求

以下是一个简单的GET请求示例：

void fetchUserData() async {
  // 创建一个网络请求实例
  final response = await NetworkRequest.get(
    url: 'https://jsonplaceholder.typicode.com/users/1',
    headers: {'Content-Type': 'application/json'},
  );

  // 检查响应状态码是否成功
  if (response.statusCode == 200) {
    print('用户数据: ${response.body}');
  } else {
    print('请求失败: ${response.statusCode}');
  }
}

发送POST请求

以下是一个POST请求示例：

void submitFormData() async {
  // 创建一个网络请求实例
  final response = await NetworkRequest.post(
    url: 'https://jsonplaceholder.typicode.com/posts',
    body: {
      'title': 'foo',
      'body': 'bar',
      'userId': 1,
    },
    headers: {'Content-Type': 'application/json'},
  );

  // 检查响应状态码是否成功
  if (response.statusCode == 200) {
    print('提交成功: ${response.body}');
  } else {
    print('请求失败: ${response.statusCode}');
  }
}

超时设置

你可以通过设置超时时间来避免长时间等待请求结果：

void fetchWithTimeout() async {
  // 设置超时时间为5秒
  final response = await NetworkRequest.get(
    url: 'https://jsonplaceholder.typicode.com/users/1',
    headers: {'Content-Type': 'application/json'},
    timeout: Duration(seconds: 5),
  );

  if (response.statusCode == 200) {
    print('用户数据: ${response.body}');
  } else {
    print('请求超时或失败');
  }
}

请求日志记录

为了调试方便，可以启用日志记录功能：

void enableLogging() async {
  // 启用日志记录
  NetworkRequest.enableLogging();

  final response = await NetworkRequest.get(
    url: 'https://jsonplaceholder.typicode.com/users/1',
    headers: {'Content-Type': 'application/json'},
  );

  if (response.statusCode == 200) {
    print('用户数据: ${response.body}');
  } else {
    print('请求失败: ${response.statusCode}');
  }
}

完整示例

以下是一个完整的示例，展示了如何使用_iwu_pack_network插件进行GET和POST请求：

import 'package:flutter/material.dart';
import 'package:_iwu_pack_network/_iwu_pack_network.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('_iwu_pack_network 示例')),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              ElevatedButton(
                onPressed: fetchUserData,
                child: Text('获取用户数据'),
              ),
              SizedBox(height: 20),
              ElevatedButton(
                onPressed: submitFormData,
                child: Text('提交表单数据'),
              ),
              SizedBox(height: 20),
              ElevatedButton(
                onPressed: fetchWithTimeout,
                child: Text('带超时的GET请求'),
              ),
              SizedBox(height: 20),
              ElevatedButton(
                onPressed: enableLogging,
                child: Text('启用日志记录'),
              ),
            ],
          ),
        ),
      ),
    );
  }

  void fetchUserData() async {
    final response = await NetworkRequest.get(
      url: 'https://jsonplaceholder.typicode.com/users/1',
      headers: {'Content-Type': 'application/json'},
    );

    if (response.statusCode == 200) {
      print('用户数据: ${response.body}');
    } else {
      print('请求失败: ${response.statusCode}');
    }
  }

  void submitFormData() async {
    final response = await NetworkRequest.post(
      url: 'https://jsonplaceholder.typicode.com/posts',
      body: {
        'title': 'foo',
        'body': 'bar',
        'userId': 1,
      },
      headers: {'Content-Type': 'application/json'},
    );

    if (response.statusCode == 200) {
      print('提交成功: ${response.body}');
    } else {
      print('请求失败: ${response.statusCode}');
    }
  }

  void fetchWithTimeout() async {
    final response = await NetworkRequest.get(
      url: 'https://jsonplaceholder.typicode.com/users/1',
      headers: {'Content-Type': 'application/json'},
      timeout: Duration(seconds: 5),
    );

    if (response.statusCode == 200) {
      print('用户数据: ${response.body}');
    } else {
      print('请求超时或失败');
    }
  }

  void enableLogging() async {
    NetworkRequest.enableLogging();

    final response = await NetworkRequest.get(
      url: 'https://jsonplaceholder.typicode.com/users/1',
      headers: {'Content-Type': 'application/json'},
    );

    if (response.statusCode == 200) {
      print('用户数据: ${response.body}');
    } else {
      print('请求失败: ${response.statusCode}');
    }
  }
}