flutter中如何上传图片？
两种方式
http库上传
var request = new http.MultipartRequest("POST", url);
request.fields['user'] = 'someone@somewhere.com';
request.files.add(http.MultipartFile.fromPath(
'package',
'build/package.tar.gz',
contentType: new MediaType('application', 'x-tar'),
));
request.send().then((response) {
if (response.statusCode == 200) print("Uploaded!");
});dio库上传FormData formData = new FormData.from({
"name": "wendux",
"file1": new UploadFileInfo(new File("./upload.jpg"), "upload1.jpg")
});
response = await dio.post("/info", data: formData)
{{collectdata}}
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