如何从dart/flutter将int/integer值发布为json [英] How to post int/integer value as json from dart/flutter

问题描述

我正在使用asp.net核心Web API作为后端.有一种方法可以接受单个整数值.

I am using asp.net core web API as back-end. There is a method that accepts a single integer value.

Method([FromBody] int value)

我想发布来自dart/flutter的整数值. 我用dart http包尝试了以下方法.

I want to post the integer value from dart/flutter. I tried the following with the dart http package.

Http.post(url, body:0,headers:{"content-type":"application/json"}

Http.post(url, body:{0},headers:{"content-type":"application/json"}

Http.post(url, body:convert.jsonEncode(0),headers:{"content-type":"application/json"}

Http.post(url, body:convert.jsonEncode({0}),headers:{"content-type":"application/json"}

我上面的所有尝试均因错误而失败 无效的参数:无效的请求正文"0""

All my above tries failed with error "Invalid argument: invalid request body "0""

推荐答案

请参考我的代码

1. 导入

1. import

import 'package:http/http.dart' as http;

http请求

http request

var client = new http.Client();
client.post(Uri.encodeFull("Your url"), body: {
  "param1": "value1",
  "param2": 11, // integer value type       
}).then((response) {
  client.close();
  if (this.mounted && response.statusCode == 200) {
     //enter your code for change state
  }
}).catchError((onError) {
   client.close();
   print("Error: $onError");
});

希望它能对您有所帮助.

I hope it will help you.

PS:

var client = new http.Client();
var response = await client.post(Uri.encodeFull("Your Url"), body : "0", header : {/*Your headers*/"});

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