1.使用dio跳过证书验证

    //证书验证
    (_dio!.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate = (client){
      client.badCertificateCallback=(cert, host, port){
        return true;
      };
      return client;
    };

2.在请求时设置状态responseType，及返回的数据类型

Response<List<int>>  response =_dio!.get<List<int>>(path, options: Options(responseType: ResponseType.bytes))

3.

import 'dart:async';
import 'dart:typed_data';

import 'package:cockpitapp/service/service-base.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';
import 'package:http/http.dart' as http;

/// 缓存管理
class EsoImageCacheManager extends CacheManager {
  static const key = 'libEsoCachedImageData';

  static EsoImageCacheManager? _instance;
  factory EsoImageCacheManager() {
    _instance ??= EsoImageCacheManager._();
    return _instance!;
  }

  EsoImageCacheManager._() : super(Config(key, fileService: EsoHttpFileService()));
}

class EsoHttpFileService extends FileService {

  @override
  Future<FileServiceResponse> get(String? url,
      {Map<String, String>? headers = const {}}) async {
    Uint8List result = await HttpServiceBase.getHttpServiceBase().getVideoString(url!,type: 'image');
    final http.StreamedResponse _response = http.StreamedResponse(
      Stream.value(response.data), response.statusCode,
    );
    return HttpGetResponse(_response);
  }
}

4.设置cacheManager

.CachedNetworkImage(//图片
          imageUrl: url,
          width: width,
          height: height,
          fit: fit,
          cacheManager: EsoImageCacheManager()
        )