如何以原始 JSON 格式发送 http

Question

您好，我有一个问题 这些是我的 http 正文和标头，我想将其转换为邮递员请求的预期请求

其中格式为 JSON 格式

var response = await http.post(
      '${UIData.baseAppUrl}/api/v1/endpoint',
body: {
    "device_id": "$deviceId",
    "country_id": "$countryId",
    "contacts": [
      {
        "name": "test",
        "email": "test@test.com",
        "phone": "+911111111110"
      },
      {
        "name": "Test 2",
        "email": "test2@test2.com",
        "phone": "+910000000000"
      }
    ]
  },
  headers: {
    "Accept": "application/json",
    "Authorization": "Bearer $token"
  },

但是当我运行这个时，我会得到这个

type 'List<Map<String, String>>' is not a subtype of type 'String' in type cast

如果有人可以帮助我，请提前找到解决方案，谢谢

Answer 1

可能将来有人肯定会遇到这个问题，因为他们不用担心

var response = await http.post(
      '${UIData.baseAppUrl}/api/v1/endpoint',
body: jsonEncode({
    "device_id": "$deviceId",
    "country_id": "$countryId",
    "contacts": [
      {
        "name": "test",
        "email": "test@test.com",
        "phone": "+911111111110"
      },
      {
        "name": "Test 2",
        "email": "test2@test2.com",
        "phone": "+910000000000"
      }
    ]
  }),
  headers: {
    "Accept": "application/json",
    "Authorization": "Bearer $token",
    "Content-Type": "application/json",
  },

我只是在jsonEncode() 中使用包裹体并在标题中使用"Content-Type": "application/json"，然后奇迹发生了。

Answer 2

试试这个希望对你有帮助

body: json.encode(
              {
                "device_id": "$deviceId",
                "country_id": "$countryId",
                "contacts": [
                  {
                    "name": "test",
                    "email": "test@test.com",
                    "phone": "+911111111110"
                  },
                  {
                    "name": "Test 2",
                    "email": "test2@test2.com",
                    "phone": "+910000000000"
                  }
                ]
              });