如何实现令牌到 web api 发送请求？ [复制]

Posted 2023-03-08

【中文标题】如何实现令牌到 web api 发送请求？ [复制]

【英文标题】：how to implement token to web api send request? [duplicate]

【发布时间】：2020-01-10 04:23:02

【问题描述】：

我的 xamarin.form 应用程序中有这两种方法。我已将 b2c 身份验证添加到我的应用程序中。现在如何更改这些方法以使用令牌。对不起，如果这是一个非常基本的问题，但我太初级了。 谢谢

 private static async Task<string> SendGetRequest(string url)
    
        var httpClient = new HttpClient();
        string responseString = string.Empty;
        var response = await httpClient.GetAsync(url);

        if (response.IsSuccessStatusCode)
        
            responseString = await response.Content.ReadAsStringAsync();
        
        else
        
           ...
        

        return responseString;
    

    private static async Task SendPostRequest(string url, object payLoad)
    
        try
        
            var httpClient = new HttpClient();
            var stringContent = new StringContent(JsonConvert.SerializeObject(payLoad), Encoding.UTF8, "application/json");
            var response = await httpClient.PostAsync(url, stringContent).ConfigureAwait(false);

            if (!response.IsSuccessStatusCode)
            
                ...
            
        
        catch (InvalidOperationException ex)
        
            ...
        
        catch (Exception ex)
        
            ...
        
    

【问题讨论】：

这能回答你的问题吗？ Setting Authorization Header of HttpClient

【参考方案1】：

使用授权标头进行身份验证：

private static async Task<string> SendGetRequest(string url)
    
        var httpClient = new HttpClient();
        httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(authorizationType, accessToken);
        string responseString = string.Empty;
        var response = await httpClient.GetAsync(url);

        if (response.IsSuccessStatusCode)
        
            responseString = await response.Content.ReadAsStringAsync();
        
        else
        
           ...
        

        return responseString;
    

    private static async Task SendPostRequest(string url, object payLoad)
    
        try
        
            var httpClient = new HttpClient();
            httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(authorizationType, accessToken);
            var stringContent = new StringContent(JsonConvert.SerializeObject(payLoad), Encoding.UTF8, "application/json");
            var response = await httpClient.PostAsync(url, stringContent).ConfigureAwait(false);

            if (!response.IsSuccessStatusCode)
            
                ...
            
        
        catch (InvalidOperationException ex)
        
            ...
        
        catch (Exception ex)
        
            ...
        
    

这里的 authorizationType 类似于“Basic”或“Bearer”，accessToken 是您的令牌。