ASP.NET Core Web API-如何使用httpclient消费第三方API

Question

在我的ASP.NET Core-6 Web API中，我获得了第三方API，然后返回帐户详细信息。

API：

https://api.thirdpartycompany.com:2233/UserAccount/api/AccountDetail?accountNumber=112123412

标题：

X-GivenID:Given2211
X-GivenName:Givenyou
X-GivenPassword:Given@llcool

然后JSON结果如下：

{
  "AccountName": "string",
  "CurrentBalance": 0,
  "AvailableBalance": 0,
  "Currency": "string"
}

到目前为止，我已经做到了：

Balanceenquiryresponse：

public class BalanceEnquiryResponse
{
    public string Response
    {
        get;
        set;
    }

    public bool IsSuccessful
    {
        get;
        set;
    }

    public List<BalanceList> AccountBalances
    {
        get;
        set;
    }
}

Balancelist：

public class BalanceList
{
    public string AccountNumber
    {
        get;
        set;
    }

    public decimal CurrentBalance
    {
        get;
        set;
    }

    public decimal AvailableBalance
    {
        get;
        set;
    }

    public string Currency
    {
        get;
        set;
    }
}

然后服务如下所示。

idataservice：

public interface IDataService
{
    BalanceEnquiryResponse GetAccountBalance(string accountNo);
}

dataService：

public class DataService : IDataService
{
    private readonly ILogger<DataService> _logger;
    private readonly HttpClient _myClient;
    public DataService(ILogger<DataService> logger, HttpClient myClient)
    {
        _logger = logger;
        _myClient = myClient;
    }

    private void PrepareAPIHeaders()
    {
        _myClient.DefaultRequestHeaders.Add("X-GivenID", "Given2211");
        _myClient.DefaultRequestHeaders.Add("X-GivenName", "Givenyou");
        _myClient.DefaultRequestHeaders.Add("X-GivenPassword", "Given@llcool");
        _myClient.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json; charset=utf-8");
        _myClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "application/json; charset=utf-8");
    }

    public BalanceEnquiryResponse GetAccountBalance(string accountNo)
    {
        _logger.LogInformation("Accessing Own Account");
        var url = $"https://api.thirdpartycompany.com:2233/UserAccount/api/AccountDetail?accountNumber={accountNo}";
        var responseResults = new BalanceEnquiryResponse();
        var response = await _myClient.GetAsync(url);
        return response;
    }
}

返回与URL，标头和BalanceenquiryResponse有关的响应

使用httpclient，我想首次尝试使用httpclient //www.tutorialsteacher.com/webapi/consuming-web-api-in-dotnet-usis-using-httpclient“ rel =“ nofollow noreferrer”>使用httpclclient在.NET中消耗Web

API ：

Cannot implicitly convert type 'System.Net.Http.HttpResponseMessage' to 'BalanceEnquiryResponse'

和响应在返回响应中突出显示

如何纠正错误并在返回响应中实现目标。

谢谢。

Answer 1

基于您的班级，这些小更改应该使您处于修复其余部分的位置：

public class DataService : IDataService
{
    private readonly ILogger<DataService> _logger;
    private readonly HttpClient _myClient;
    public DataService(ILogger<DataService> logger, HttpClient myClient)
    {
        _logger = logger;
        _myClient = myClient;
        PrepareAPIHeaders(); // Actually apply the headers!
    }

    private void PrepareAPIHeaders()
    {
        _myClient.DefaultRequestHeaders.Add("X-GivenID", "Given2211");
        _myClient.DefaultRequestHeaders.Add("X-GivenName", "Givenyou");
        _myClient.DefaultRequestHeaders.Add("X-GivenPassword", "Given@llcool");
        _myClient.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json; charset=utf-8");
        _myClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "application/json; charset=utf-8");
    }

    // If you want to use async API, you need to go async all the way.
    // So make this Method async, too!
    public async Task<BalanceEnquiryResponse> GetAccountBalance(string accountNo)
    {
        _logger.LogInformation("Accessing Own Account");
        var url = $"https://api.thirdpartycompany.com:2233/UserAccount/api/AccountDetail?accountNumber={accountNo}";

        var response = await _myClient.GetAsync(url);
        // vv Get your payload out of the Http Response.
        var responseResults = await response.Content.ReadAsAsync<BalanceEnquiryResponse>();
        return responseResults;
    }
}