我想上传一张图片,我正在使用http.Client()来发送请求,
static uploadImage(String id,File file) {
var httpClient = createHttpClient();
Map<String,String> headers = new Map<String,String>();
headers.putIfAbsent("Authorization",() => "---");
headers.putIfAbsent("Content-Type",() => "application/json");
var body=new List();
body.add(id.)
httpClient.post(URL_UPLOADIMAGE,headers: headers,body:,encoding: )
}
请求的正文和编码部分应该是什么？
解决方法
使用
MultipartRequest 级
Upload(File imageFile) async {
var stream = new http.ByteStream(DelegatingStream.typed(imageFile.openRead()));
var length = await imageFile.length();
var uri = Uri.parse(uploadURL);
var request = new http.MultipartRequest("POST",uri);
var multipartFile = new http.MultipartFile('file',stream,length,filename: basename(imageFile.path));
//contentType: new MediaType('image','png'));
request.files.add(multipartFile);
var response = await request.send();
print(response.statusCode);
response.stream.transform(utf8.decoder).listen((value) {
print(value);
});
}
名称空间：
import 'package:path/path.dart'; import 'package:async/async.dart'; import 'dart:io'; import 'package:http/http.dart' as http;
