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滴滴淘/ddt_flutter/lib/http/index.dart

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+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_app/http/config.dart';
+import 'package:bot_toast/bot_toast.dart';
+
+class Http {
+  Dio _dio;
+
+  Http() {
+    this._dio = new Dio(new BaseOptions(
+      baseUrl: config.BASE_URL,
+      connectTimeout: 3000,
+      receiveTimeout: 3000,
+    ));
+
+
+    this._dio.interceptors.add(InterceptorsWrapper(
+      onRequest:(RequestOptions options){
+        /// 请求发送前拦截，对 queryParameters 参数进行RSA公钥加密，放到token中发送给后端
+        /// 后端私钥解密，查询数据，然后通过私钥加密数据再返回给前端
+        ///options.headers = options.queryParameters;
+        ///print(options.headers);
+        return options;
+      },
+      onResponse:(Response response) {
+        /// 响应拦截器，将数据返回给前端之前先使用公钥解密后端的数据，然后将解密后明文给前端
+        // 在返回响应数据之前做一些预处理
+        return response;
+      },
+      onError: (DioError e) {
+        return e;
+      }
+    ));
+  }
+
+  /***
+   * get 请求
+   * url 请求地址
+   * params 请求参数
+   */
+  get (String url, Object params) async {
+    Response response;
+    try {
+      response = await this._dio.get(url, queryParameters: params);
+      return response.data;
+    } on DioError catch (e) {
+      if (CancelToken.isCancel(e)) {
+        BotToast.showSimpleNotification(
+            title: 'GET请求取消',
+            subTitle: e.message,
+            hideCloseButton: true
+        );
+      }
+      BotToast.showSimpleNotification(
+          title: 'GET请求错误',
+          subTitle: e.message,
+          hideCloseButton: true
+      );
+      print(e.message);
+    }
+  }
+
+  /***
+   * post 请求
+   * url 请求地址
+   * params 请求参数
+   */
+  post (String url, Object params) async {
+    Response response;
+    try {
+      response = await this._dio.post(url, data: params);
+      return response.data;
+    } on DioError catch (e) {
+      if (CancelToken.isCancel(e)) {
+        BotToast.showSimpleNotification(
+            title: 'POST请求取消',
+            subTitle: e.message,
+            hideCloseButton: true
+        );
+      }
+      BotToast.showSimpleNotification(
+          title: 'POST请求错误',
+          subTitle: e.message,
+          hideCloseButton: true
+      );
+    }
+  }
+
+}