Thx bro your code helped me to solve sending fields string in MultipartFile in Flutter — Shashank Pujari. That example was really more specific to a server though; you could use one of MultipartFile's other constructors like.
Show 2 more comments. Please write here the solution instead of including a link that could be broken in the future. Here is a sample github. Robbie Robbie 10 10 silver badges 8 8 bronze badges. Worked like a charm. Why the response doesn't have response. BagusAjiSantoso request. See this question stackoverflow. Where are you important "MediaType" from? ByteStream DelegatingStream. Quick learner Quick learner 7, 2 2 gold badges 32 32 silver badges 47 47 bronze badges.
This work for me. Aida Bico Aida Bico 1 1 silver badge 2 2 bronze badges. Supun Dewapriya Supun Dewapriya 8 8 silver badges 10 10 bronze badges. Dio ; dioRequest. Erkebulan Duisebay Erkebulan Duisebay 2 2 silver badges 4 4 bronze badges. I get error at "MediaType". Am I missing any imports? SilenceCodder SilenceCodder 2, 16 16 silver badges 27 27 bronze badges. Until a multipart encoding parser is available, you can use File API on client to read and upload file content as dataUrl.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to upload a file in Dart? Ask Question. Asked 9 years ago.
Active 5 years, 1 month ago. Viewed 10k times. I'm trying to find any examples of uploading a file with a Dart script. Request method aliases For convenience aliases have been provided for all supported request methods.
Request Options The Options class describes the http request information and configuration. Each Dio instance has a base config for all requests maked by itself, and we can override the base config with [Options] when make a single request.
The [BaseOptions] declaration as follows:. String method;. String baseUrl;. String contentType;. ResponseType responseType;. ValidateStatus validateStatus;. Map extra;. This is the usual Flutter code used to initialize an app, this tutorial really is meant for those who don't need much explanation as to what it does and why that's more the realm of introductory tutorials and books like the one I've written :. That's going to be the state variable, which is what is shown in the middle of the screen to the user.
We use that as part of the floating action button's onPressed callback together with the URL passed by the StartPage to call the uploadImage function and re-render the view using setState to show the state of the request to the user. For this section, the tools we're going to use are Node, Express and Multer. There's not going to be much code involved, this is a fairly simple affair.
The first 4 lines are simply dealing with dependencies: the first three are straight-up imports of dependencies, whereas line 4 sets up the Multer middleware the one that handles file uploads to save uploaded files to the uploads directory. The callback prints to the console the name of the file that was received on line 9 , it then renames the file to the original file name.
When this is finished lines 13 to 16 we delete unlinkSync the temporary file created by Multer which has a name that ensures there aren't two files with the same name but doesn't even keep the same extension as the original file and send back a response saying everything was OK. If an error happens often because no file name was specified, on line 17 we will inform the sender of that. On lines 22 and 23 we start the server on the port specified by the PORT environment variable or on port if no port was specified using environment variables.
To use the example code, start the server by running node index. For example, if your PC's IP is I hope you found this tutorial useful and I invite you to tell me what topic I should cover next. You can try this solution: flutter. This works for me. Thanks, very good article I use nodejs on windows 10 and couldn't figure it out how to send request to local server, I think it was about firewall. Hi Carmine This article is very useful for me.
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