flutter dio网络请求 get post 图片上传

Dio下载地址github:dio
初始化网络请求

BaseOptions option = BaseOptions();
//初始化cotentType
option.contentType = ContentType.parse("application/json;charset=UTF-8");
//设置请求头参数
option.headers = {'token':'ab2343sdfsdfsfsdf1213123'};
//创建Dio
Dio dio = Dio(option);

发起get或者post请求
get

 /*get请求*/static Future<AjaxResult> get(String url, {Map params}) async {if (params != null && params.isNotEmpty) {// 如果参数不为空，则将参数拼接到URL后面StringBuffer sb = StringBuffer("?");params.forEach((key, value) {sb.write("$key" + "=" + "$value" + "&");});String paramStr = sb.toString();paramStr = paramStr.substring(0, paramStr.length - 1);url += paramStr;}print('url---> $url');Dio dio = getDio();try {Response res = await dio.get(url);// var re = Utf8Decoder().convert(res.data);final re = AjaxResult.fromJson(json.decode(res.data));return re;} on DioError catch (e) { print(e);FuntionUtil.toast(e.message);}}

post请求

  static Future<AjaxResult> post(String url, {Map<String,dynamic> params}) async {// final paramsjson = jsonEncode(params);print('url---> $url params--->$params');Dio dio = getDio();try {// var body = json.encode(paramsjson);Response res = await dio.post(url, queryParameters: params);print(res);final re = AjaxResult.fromJson(json.decode(res.data));return re;// var re = Utf8Decoder().convert(res.data);} on DioError catch (e) {print(e);FuntionUtil.toast(e.message);}}

图片上传

static Future<AjaxResult> upload(String url, File imgfile,{Map<String, String> params}) async {// final paramsjson = jsonEncode(params);String path = imgfile.path;var name = path.substring(path.lastIndexOf("/") + 1, path.length);FormData formData = new FormData.from({"Filedata": new UploadFileInfo(File(path), name),"size":"0","majia":"zhaowojie",// 'Files[]': [new UploadFileInfo(File(path), "sa"),new UploadFileInfo(File(path), name)],});Dio dio = getDio();try {// var body = json.encode(paramsjson);Response res = await dio.post(url, data: formData);print(res);final re = AjaxResult.fromJson(json.decode(res.data));return re;} on DioError catch (e) {print(e);FuntionUtil.toast(e.message);}}

完整代码

import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:dio/dio.dart';
import 'package:flutte_xms/model/ajaxresult.dart';
import 'package:flutte_xms/model/usermodel.dart';
import 'package:flutte_xms/util/func_util.dart';
import 'package:flutte_xms/util/usermanager.dart';class DioReq {/*get请求*/static Future<AjaxResult> get(String url, {Map params}) async {if (params != null && params.isNotEmpty) {// 如果参数不为空，则将参数拼接到URL后面StringBuffer sb = StringBuffer("?");params.forEach((key, value) {sb.write("$key" + "=" + "$value" + "&");});String paramStr = sb.toString();paramStr = paramStr.substring(0, paramStr.length - 1);url += paramStr;}print('url---> $url');Dio dio = getDio();try {Response res = await dio.get(url);// var re = Utf8Decoder().convert(res.data);final re = AjaxResult.fromJson(json.decode(res.data));return re;} on DioError catch (e) { print(e);FuntionUtil.toast(e.message);}}/*post请求*/static Future<AjaxResult> post(String url, {Map params}) async {// final paramsjson = jsonEncode(params);print('url---> $url params--->$params');Dio dio = getDio();try {// var body = json.encode(paramsjson);Response res = await dio.post(url, data: params);print(res);final re = AjaxResult.fromJson(json.decode(res.data));return re;// var re = Utf8Decoder().convert(res.data);} on DioError catch (e) {print(e);FuntionUtil.toast(e.message);}}/*图片上传*/static Future<AjaxResult> upload(String url, File imgfile,{Map<String, String> params}) async {// final paramsjson = jsonEncode(params);String path = imgfile.path;var name = path.substring(path.lastIndexOf("/") + 1, path.length);FormData formData = new FormData.from({"Filedata": new UploadFileInfo(File(path), name),"size":"0","majia":"zhaowojie",// 'Files[]': [new UploadFileInfo(File(path), "sa"),new UploadFileInfo(File(path), name)],});Dio dio = getDio();try {// var body = json.encode(paramsjson);Response res = await dio.post(url, data: formData);print(res);final re = AjaxResult.fromJson(json.decode(res.data));return re;} on DioError catch (e) {print(e);FuntionUtil.toast(e.message);}}static Dio getDio() {BaseOptions option = BaseOptions();option.contentType = ContentType.parse("application/json;charset=UTF-8");//如果用户登录成功 将token带上if (UserManager.shared.isLogin) {UserInfo info = UserManager.shared.userInfo;print('appLoginToken:${info.userId}');if (info != null) {option.headers = {'userId': info.userId,};}}return Dio(option);}
}

关于AjaxResult Model


const AjaxResultStateSuccess = 0;class AjaxResult {int status;String msg;dynamic data;AjaxResult({this.status, this.msg, this.data});AjaxResult.fromJson(Map<String, dynamic> json) {status = json['status'];msg = json['msg'];data = json['data'];}Map<String, dynamic> toJson() {final Map<String, dynamic> datas = new Map<String, dynamic>();datas['status'] = this.status;datas['msg'] = this.msg;datas['data'] = this.data;return datas;}
}

怎么使用 post get upload

   DioReq.post(请求的url, params: {'mobile': phone,'authCodeType': 1,  }).then((res) {if (res.status == AjaxResultStateSuccess){print('验证码发送成功');}else{FuntionUtil.toast(res.msg);}},);//图片上传DioReq.upload(请求的url, forgroundImg).then((res){if(res.status == AjaxResultStateSuccess){FuntionUtil.toast(res.msg);print(res);}else{FuntionUtil.toast(res.msg);}});

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