运行的时候报错。

[leisure520]

` var dio = new Dio();
//dio.options.baseUrl = "http://www.dtworkroom.com/doris/1/2.0.0/";
dio.options.baseUrl = "http://localhost/ds/test";
// dio.onHttpClientCreate = (HttpClient client) {
// client.idleTimeout=new Duration(seconds: 0);
// client.findProxy = (uri) {
// //proxy all request to localhost:8888
// return "PROXY localhost:8888";
// };
// };
FormData formData = new FormData.from({
"name": "haha",
"file": new UploadFileInfo(new File("./example/flutter.png"), "flutter.png")
});
// Send FormData
Response response =
await dio.post("http://127.0.0.1:8123/upload", data: formData);
print(response);

`

type '_InternalLinkedHashMap<dynamic, dynamic>' is not a subtype of type 'Map<String, dynamic>'
具体原因可能最新版flutter自带的dart修改了一些MAP方法了。

[leisure520]

当然上面的程序可能写法有问题，直接只用
FormData formData = new FormData.from({
"name": "haha",
"file": new UploadFileInfo(new File("./example/flutter.png"), "flutter.png")
});
这段同样报错。