在Android上发布错误
我在Android设备上发送带有此代码的POST请求时遇到问题在Android上发布错误,android,flutter,Android,Flutter,我在Android设备上发送带有此代码的POST请求时遇到问题 import 'dart:async'; import 'dart:convert'; import 'package:http/http.dart' as http; class NetworkUtil { // next three lines makes this class a Singleton static NetworkUtil _instance = new NetworkUtil.internal();
import 'dart:async';
import 'dart:convert';
import 'package:http/http.dart' as http;
class NetworkUtil {
// next three lines makes this class a Singleton
static NetworkUtil _instance = new NetworkUtil.internal();
NetworkUtil.internal();
factory NetworkUtil() => _instance;
final JsonDecoder _decoder = new JsonDecoder();
static final baseURL = "https://myurl.com";
Future<dynamic> get(String url) {
return http.get(baseURL+url).then((http.Response response) {
final String res = response.body;
final int statusCode = response.statusCode;
if (statusCode < 200 || statusCode > 400 || json == null) {
throw new Exception("Error while fetching data");
}
return _decoder.convert(res);
});
}
Future<dynamic> post(String url, {Map headers, body, encoding}) {
return http
.post(baseURL+url, body: body, headers: headers, encoding: encoding)
.then((http.Response response) {
final String res = response.body;
final int statusCode = response.statusCode;
if (statusCode < 200 || statusCode > 400 || json == null) {
throw new Exception("Error while fetching data");
}
return _decoder.convert(res);
});
}
}
导入'dart:async'；
导入“dart:convert”；
将“package:http/http.dart”导入为http；
类NetworkUtil{
//接下来的三行使这个类成为一个单独的类
静态NetworkUtil_instance=new NetworkUtil.internal（）；
NetworkUtil.internal（）；
factory NetworkUtil（）=>\u实例；
最终JsonDecoder_解码器=新JsonDecoder（）；
静态最终baseURL=”https://myurl.com";
未来获取（字符串url）{
返回http.get（baseURL+url）。然后（（http.Response）{
最终字符串res=response.body；
最终int statusCode=response.statusCode；
if（statusCode<200 | | statusCode>400 | | json==null）{
抛出新异常（“获取数据时出错”）；
}
返回-解码器转换（res）；
});
}
Future post（字符串url，{Map headers，body，encoding}）{
返回http
.post（baseURL+url，主体：主体，标题：标题，编码：编码）
.然后（（http.Response）{
最终字符串res=response.body；
最终int statusCode=response.statusCode；
if（statusCode<200 | | statusCode>400 | | json==null）{
抛出新异常（“获取数据时出错”）；
}
返回-解码器转换（res）；
});
}
}
Instance of 'Future'
E/flutter (13631): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
E/flutter (13631): HandshakeException: Handshake error in client (OS Error:
E/flutter (13631): CERTIFICATE_VERIFY_FAILED: unable to get local issuer certificate(handshake.cc:363))
E/flutter (13631): #0 IOClient.send (package:http/src/io_client.dart:30:23)
E/flutter (13631): <asynchronous suspension>
E/flutter (13631): #1 BaseClient._sendUnstreamed (package:http/src/base_client.dart:171:38)
E/flutter (13631): <asynchronous suspension>
E/flutter (13631): #2 BaseClient.post (package:http/src/base_client.dart:56:5)
E/flutter (13631): #3 post.<anonymous closure> (package:http/http.dart:70:34)
E/flutter (13631): #4 _withClient (package:http/http.dart:167:20)
E/flutter (13631): <asynchronous suspension>
E/flutter (13631): #5 post (package:http/http.dart:70:3)
E/flutter (13631): #6 NetworkUtil.post (package:queue/class/network_util.dart:28:10)
E/flutter (13631): #7 MakeVerifyTelephoneButtonState._submitPressed (file:///Users/skulltree/Documents/TwinSynergyProjects/crossPlatform/manaqueue/lib/ui/verifybutton.dart:29:27)
E/flutter (13631): #8 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102:24)
E/flutter (13631): #9 TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:161:9)
E/flutter (13631): #10 TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:123:7)
E/flutter (13631): #11 GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
E/flutter (13631): #12 _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:147:20)
E/flutter (13631): #13 _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:121:22)
E/flutter (13631): #14 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:101:7)
E/flutter (13631): #15 _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:64:7)
E/flutter (13631): #16 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:48:7)
E/flutter (13631): #17 _invoke1 (dart:ui/hooks.dart:134:13)
E/flutter (13631): #18 _dispatchPointerDataPacket (dart:ui/hooks.dart:91:5)
但是，使用相同的代码，它在iOS设备上运行良好。是否有可能我在Android Studio或其他任何设备上缺少配置。您使用的链接不是https。还没有颁发任何安全证书。尝试http而不是https这是一个SSL证书错误，请确保设备时间和日期也正确（如果不是，证书的SSL证书可能已过期）。如果您的网站不是HTTPS，请改用HTTP 此外，在iOS上，请注意应用程序传输安全，因为默认情况下它不允许非HTTPS调用
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
<key>NSExceptionDomains</key>
<dict>
<key>example.com</key>
<dict>
<key>NSExceptionAllowsInsecureHTTPLoads</key>
<true/>
<key>NSIncludesSubdomains</key>
<true/>
</dict>
</dict>
</dict>
NSAppTransportSecurity
NSAllowsArbitraryLoads
NSExceptionDomains
example.com
N异常低安全Http负载
n包括多个域