如何从颤动中读取 Http 响应？

Question

我正在尝试从 HTTP 中读取响应，但我没有阅读。 我发布了请求。有谁知道，有什么问题吗？

final http.Client client;

Future<http.Response> post(
  Uri uri, {
    Map<String, dynamic> postParams,
    String accessToken,
  }) async {
log.info(uri.toString());
log.info('postParams: ${postParams?.toString()}');

///Encode map to bytes
String jsonString = json.encode(postParams);
List<int> bodyBytes = utf8.encode(jsonString);

Map headers = {
  HttpHeaders.contentTypeHeader: 'application/json; charset=utf-8',
};


final response = await client
    .post(
  uri,
  body: bodyBytes,
  headers: headers,
)
    .timeout(Duration(seconds: 120));
}

Answer 1

您可以按如下方式实现此功能

1.安装http包并导入如下

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

1. 像你一样创建http 或http.Client 的实例

   final http.Client _client = http.Client();
   

2. 如下向服务器发送请求

   var url = 'https://example.com/store/.....'; 
   
   final Map<String, dynamic> data= {"name":"John Doe", "email":"johndoe@email.com"};
   
   final Map<String, String> _headers = {
       "Content-Type": "application/json",
       "Accept": "application/json",
    };
   
   var response = await _client.post(url, body:data, headers:_headers);
   

3. 然后您可以将响应读取为

    if(response.statusCode == 200) {
      var decoded = json.decode(response.body);
      print(decoded);
   
      // The Rest of code 
    }