Flutter-Habit

network

• aes 加解密操作
• entity 基礎(chǔ)實(shí)體類(lèi)
• interceptor 攔截器
• http_error 錯(cuò)誤碼
• net_exception 異常攔截
• vv_net_work 單例的Dio對(duì)象

Dio配合Charles 抓包配置，ConstantConfig.localProxy配置本機(jī)IP源哩，既可以實(shí)現(xiàn)抓包

 if (ConstantConfig.localProxy.isNotEmpty) {
        (_client.httpClientAdapter as DefaultHttpClientAdapter)
            .onHttpClientCreate = (client) {
          client.badCertificateCallback =
              (X509Certificate cert, String host, int port) {
//          if(cert.pem==PEM){ // Verify the certificate
//            return true;
//          }
            return true;
          };
          client.findProxy = (uri) {
            return ConstantConfig.localProxy;
          };
        };
      }

網(wǎng)絡(luò)取消,結(jié)合ViewModel進(jìn)行取消，具體怎么取消的，記得看源碼

  static Map<String, CancelToken> cancelTokens = new Map<String, CancelToken>();

 ///取消請(qǐng)求
  static void cancelHttp(String tag) {
    if (cancelTokens.containsKey(tag)) {
      if (!cancelTokens[tag].isCancelled) {
        cancelTokens[tag].cancel();
      }
      cancelTokens.remove(tag);
    }
  }

這里有一個(gè)比較重要的操作惜索，就是數(shù)據(jù)解析了。Dart語(yǔ)言沒(méi)有實(shí)際的泛型概念，無(wú)法類(lèi)似Android實(shí)體化泛型命贴，所以咧织，這里我們把數(shù)據(jù)塞進(jìn)BaseResponseEntity嗓袱，通過(guò)解析 var dynamicData = json.decode(decodeData);來(lái)達(dá)到業(yè)務(wù)獲取數(shù)據(jù)

 if (baseResult['code'] == HTTP_SUCCEED) {
        var data = baseResult['data'];
        if (data != null) {
          try {
            //解密
            String decodeData = EncryptUtil.aesDecode(data);
            var dynamicData = json.decode(decodeData);
            print('解密后的數(shù)據(jù)$decodeData');
            BaseResponseEntity<T> baseResEntity = BaseResponseEntity(
                data: dynamicData,
                code: baseResult['code'],
                msg: baseResult['msg'],
                timeStamp: baseResult['timeStamp']);
            return new Future.value(baseResEntity);
          } catch (e) {
            throw (new ResponseException(
                code: baseResult['code'],
                message: e.toString(),
                errorData: baseResult['data']));
          }
        } else {
          throw (new ResponseException(
              code: baseResult['code'],
              message: baseResult['msg'],
              errorData: baseResult['data']));
        }
      }

通過(guò)上述net分析，以及網(wǎng)上大部分人的寫(xiě)法可以知道习绢。使用Dart的時(shí)候渠抹，解析數(shù)據(jù)有點(diǎn)小麻煩，F(xiàn)lutter-Habit通過(guò)JsonConvert.fromJsonAsT闪萄，擴(kuò)展了一個(gè)方法屬性梧却，來(lái)使業(yè)務(wù)更加簡(jiǎn)單

extension NetExtension<T> on Future<BaseResponseEntity<T>> {
  Future<T> check() async {
    var baseResponseEntity = await this;
    return Future.value(JsonConvert.fromJsonAsT<T>(baseResponseEntity.data));
  }
}

用法例子如下：

class LoginModel extends BaseModel {
  Future<LoginRespEntity> login(LoginReqUserEntity loginReqUserEntity) =>
      apiService
          .request<LoginRespEntity>(
            LoginApiService.loginUrl,
            queryParameters: loginReqUserEntity.toJson(),
          )
          .check();
}

在具體的業(yè)務(wù)層使用

  void toLogin(BuildContext context, String account, String password) {
    var loginReqUserEntity = LoginReqUserEntity()
      ..loginName = "123"
      ..password = "456"
      ..organizeType = 3;
    launch(() async {
      var login = await model.login(loginReqUserEntity);
      showToast(login.loginName);
      NavigatorUtils.pushNamed(context, PassWordForgetPage.sName);
    }, (err) {
    });
  }

注意，這里對(duì)launch的封裝,可以全局控制所有異常

  void launch(Future<void> Function() future, HttpFailureCallback err,
      {bool ignoreToast = false,
      bool showLoadingIndicator = false,
      bool isCancelable = true}) {
    future().catchError((onError) {
      ///錯(cuò)誤所有的網(wǎng)絡(luò)異常
      print("啥錯(cuò)誤${onError.toString()}");
      err.call(Exception(
          HttpError.checkNetError(onError, ignoreToast: ignoreToast)));
    });
  }

整體的業(yè)務(wù)結(jié)構(gòu)败去，比較核心的大概就是這兩個(gè)地方了放航。其他的看開(kāi)源的項(xiàng)目吧。
Flutter-Habit