带有标题和正文的颤动发布请求

Question

任何人都可以帮助我为以下标题和正文编写颤振请求帖子，并在下面提供相应的响应；

发布请求示例

标头请求：

Content-Type:application/x-www-form-urlencoded

正文请求：

grant_type: client_credentials

scope: accounts

client_assertion_type: code**

client_assertion: code**

Answer 1

试试下面的，

String hostname = "myhostname";// example
String port = "1234"; //example
String url = "https://$hostname:$port/as/token.oauth2";
String body = "{'grant_type' : '$client_credentials' }" +
              "'scope' : '$accounts'" +
              //... etc etc 
              "'Corresponding Response': { 'access_token': 'JWt CODE', 'expires_in': '86400', 'token_type': 'bearer', 'scope': 'payments' }"+
             "}";
var res = await http.post(Uri.encodeFull(url),
        headers: {
          "Accept": "application/json",
          "Content-Type" : "application/x-www-form-urlencoded"
        },
        body: body);