import 'dart:convert';
import 'dart:io';

class IOHttpUtils {
  //創(chuàng)建HttpClient
  HttpClient _httpClient = HttpClient();

  //要用async關(guān)鍵字異步請(qǐng)求
  getHttpClient() async {
    _httpClient
        .get('https://abc.com', 8090, '/path1')
        .then((HttpClientRequest request) {
      //在這里可以對(duì)request請(qǐng)求添加headers操作，寫入請(qǐng)求對(duì)象數(shù)據(jù)等等
      // Then call close.
      return request.close();
    }).then((HttpClientResponse response) {
      // 處理response響應(yīng)
      if (response.statusCode == 200) {
        response.transform(utf8.decoder).join().then((String string) {
          print(string);
        });
      } else {
        print("error");
      }
    });
  }

  getUrlHttpClient() async {
    var url = "https://abc.com:8090/path1";
    _httpClient.getUrl(Uri.parse(url)).then((HttpClientRequest request) {
      // Optionally set up headers...
      // Optionally write to the request object...
      // Then call close.
      return request.close();
    }).then((HttpClientResponse response) {
      // Process the response.
      if (response.statusCode == 200) {
        response.transform(utf8.decoder).join().then((String string) {
          print(string);
        });
      } else {
        print("error");
      }
    });
  }

  //進(jìn)行POST請(qǐng)求
  postHttpClient() async {
    _httpClient
        .post('https://abc.com', 8090, '/path2')
        .then((HttpClientRequest request) {
      //這里添加POST請(qǐng)求Body的ContentType和內(nèi)容
      //這個(gè)是application/json數(shù)據(jù)類型的傳輸方式
      request.headers.contentType = ContentType("application", "json");
      request.write("{\"name\":\"value1\",\"pwd\":\"value2\"}");
      return request.close();
    }).then((HttpClientResponse response) {
      // Process the response.
      if (response.statusCode == 200) {
        response.transform(utf8.decoder).join().then((String string) {
          print(string);
        });
      } else {
        print("error");
      }
    });
  }

  postUrlHttpClient() async {
    var url = "https://abc.com:8090/path2";
    _httpClient.postUrl(Uri.parse(url)).then((HttpClientRequest request) {
      //這里添加POST請(qǐng)求Body的ContentType和內(nèi)容
      //這個(gè)是application/x-www-form-urlencoded數(shù)據(jù)類型的傳輸方式
      request.headers.contentType =
          ContentType("application", "x-www-form-urlencoded");
      request.write("name='value1'&pwd='value2'");
      return request.close();
    }).then((HttpClientResponse response) {
      // Process the response.
      if (response.statusCode == 200) {
        response.transform(utf8.decoder).join().then((String string) {
          print(string);
        });
      } else {
        print("error");
      }
    });
  }

  ///其余的HEAD、PUT、DELETE請(qǐng)求用法類似，大同小異，大家可以自己試一下
  ///在Widget里請(qǐng)求成功數(shù)據(jù)后，使用setState來更新內(nèi)容和狀態(tài)即可
  ///setState(() {
  ///    ...
  ///  });

}

import 'dart:convert';
import 'dart:io';

import 'package:http/http.dart' as http;
import 'package:http_parser/http_parser.dart';

class DartHttpUtils {
  //創(chuàng)建client實(shí)例
  var _client = http.Client();

  //發(fā)送GET請(qǐng)求
  getClient() async {
    var url = "https://abc.com:8090/path1?name=abc&pwd=123";
    _client.get(url).then((http.Response response) {
      //處理響應(yīng)信息
      if (response.statusCode == 200) {
        print(response.body);
      } else {
        print('error');
      }
    });
  }

//發(fā)送POST請(qǐng)求，application/x-www-form-urlencoded
  postUrlencodedClient() async {
    var url = "https://abc.com:8090/path2";
    //設(shè)置header
    Map<String, String> headersMap = new Map();
    headersMap["content-type"] = "application/x-www-form-urlencoded";
    //設(shè)置body參數(shù)
    Map<String, String> bodyParams = new Map();
    bodyParams["name"] = "value1";
    bodyParams["pwd"] = "value2";
    _client
        .post(url, headers: headersMap, body: bodyParams, encoding: Utf8Codec())
        .then((http.Response response) {
      if (response.statusCode == 200) {
        print(response.body);
      } else {
        print('error');
      }
    }).catchError((error) {
      print('error');
    });
  }

  //發(fā)送POST請(qǐng)求，application/json
  postJsonClient() async {
    var url = "https://abc.com:8090/path3";
    Map<String, String> headersMap = new Map();
    headersMap["content-type"] = ContentType.json.toString();
    Map<String, String> bodyParams = new Map();
    bodyParams["name"] = "value1";
    bodyParams["pwd"] = "value2";
    _client
        .post(url,
            headers: headersMap,
            body: jsonEncode(bodyParams),
            encoding: Utf8Codec())
        .then((http.Response response) {
      if (response.statusCode == 200) {
        print(response.body);
      } else {
        print('error');
      }
    }).catchError((error) {
      print('error');
    });
  }

  // 發(fā)送POST請(qǐng)求，multipart/form-data
  postFormDataClient() async {
    var url = "https://abc.com:8090/path4";
    var client = new http.MultipartRequest("post", Uri.parse(url));
    client.fields["name"] = "value1";
    client.fields["pwd"] = "value2";
    client.send().then((http.StreamedResponse response) {
      if (response.statusCode == 200) {
        response.stream.transform(utf8.decoder).join().then((String string) {
          print(string);
        });
      } else {
        print('error');
      }
    }).catchError((error) {
      print('error');
    });
  }

// 發(fā)送POST請(qǐng)求，multipart/form-data，上傳文件
  postFileClient() async {
    var url = "https://abc.com:8090/path5";
    var client = new http.MultipartRequest("post", Uri.parse(url));
    http.MultipartFile.fromPath('file', 'sdcard/img.png',
            filename: 'img.png', contentType: MediaType('image', 'png'))
        .then((http.MultipartFile file) {
      client.files.add(file);
      client.fields["description"] = "descriptiondescription";
      client.send().then((http.StreamedResponse response) {
        if (response.statusCode == 200) {
          response.stream.transform(utf8.decoder).join().then((String string) {
            print(string);
          });
        } else {
          response.stream.transform(utf8.decoder).join().then((String string) {
            print(string);
          });
        }
      }).catchError((error) {
        print(error);
      });
    });
  }
  ///其余的HEAD、PUT、DELETE請(qǐng)求用法類似，大同小異，大家可以自己試一下
  ///在Widget里請(qǐng)求成功數(shù)據(jù)后，使用setState來更新內(nèi)容和狀態(tài)即可
  ///setState(() {
  ///    ...
  ///  });
}

dependencies:
  dio: ^2.0.14

import 'dart:io';

import 'package:dio/dio.dart';

class DartHttpUtils {
  //配置dio，通過BaseOptions
  Dio _dio = Dio(BaseOptions(
      baseUrl: "https://abc.com:8090/",
      connectTimeout: 5000,
      receiveTimeout: 5000));

  //dio的GET請(qǐng)求
  getDio() async {
    var url = "/path1?name=abc&pwd=123";
    _dio.get(url).then((Response response) {
      if (response.statusCode == 200) {
        print(response.data.toString());
      }
    });
  }

  getUriDio() async {
    var url = "/path1?name=abc&pwd=123";
    _dio.getUri(Uri.parse(url)).then((Response response) {
      if (response.statusCode == 200) {
        print(response.data.toString());
      }
    }).catchError((error) {
      print(error.toString());
    });
  }

//dio的GET請(qǐng)求，通過queryParameters配置傳遞參數(shù)
  getParametersDio() async {
    var url = "/path1";
    _dio.get(url, queryParameters: {"name": 'abc', "pwd": 123}).then(
        (Response response) {
      if (response.statusCode == 200) {
        print(response.data.toString());
      }
    }).catchError((error) {
      print(error.toString());
    });
  }

//發(fā)送POST請(qǐng)求，application/x-www-form-urlencoded
  postUrlencodedDio() async {
    var url = "/path2";
    _dio
        .post(url,
            data: {"name": 'value1', "pwd": 123},
            options: Options(
                contentType:
                    ContentType.parse("application/x-www-form-urlencoded")))
        .then((Response response) {
      if (response.statusCode == 200) {
        print(response.data.toString());
      }
    }).catchError((error) {
      print(error.toString());
    });
  }

  //發(fā)送POST請(qǐng)求，application/json
  postJsonDio() async {
    var url = "/path3";
    _dio
        .post(url,
            data: {"name": 'value1', "pwd": 123},
            options: Options(contentType: ContentType.json))
        .then((Response response) {
      if (response.statusCode == 200) {
        print(response.data.toString());
      }
    }).catchError((error) {
      print(error.toString());
    });
  }

  // 發(fā)送POST請(qǐng)求，multipart/form-data
  postFormDataDio() async {
    var url = "/path4";
    FormData _formData = FormData.from({
      "name": "value1",
      "pwd": 123,
    });
    _dio.post(url, data: _formData).then((Response response) {
      if (response.statusCode == 200) {
        print(response.data.toString());
      }
    }).catchError((error) {
      print(error.toString());
    });
  }

  // 發(fā)送POST請(qǐng)求，multipart/form-data，上傳文件
  postFileDio() async {
    var url = "/path5";
    FormData _formData = FormData.from({
      "description": "descriptiondescription",
      "file": UploadFileInfo(File("./example/upload.txt"), "upload.txt")
    });
    _dio.post(url, data: _formData).then((Response response) {
      if (response.statusCode == 200) {
        print(response.data.toString());
      }
    }).catchError((error) {
      print(error.toString());
    });
  }

  //dio下載文件
  downloadFileDio() {
    var urlPath = "https://abc.com:8090/";
    var savePath = "./abc.html";
    _dio.download(urlPath, savePath).then((Response response) {
      if (response.statusCode == 200) {
        print(response.data.toString());
      }
    }).catchError((error) {
      print(error.toString());
    });
  }

  ///其余的HEAD、PUT、DELETE請(qǐng)求用法類似，大同小異，大家可以自己試一下
  ///在Widget里請(qǐng)求成功數(shù)據(jù)后，使用setState來更新內(nèi)容和狀態(tài)即可
  ///setState(() {
  ///    ...
  ///  });
}