使用C# 调用deepseek api接口,来实现正常访问

先上图,结果如图

 

 

先去官方网站充值api费用,默认

 

对应的C#代码封装

 public class DeepSeekHelper   2  {   3      private static readonly HttpClient client = new HttpClient();   4      private const string ApiEndpoint = "https://api.deepseek.com/v1/chat/completions";   5      private static readonly string apiKey = "你的apikey";   6      public static async Task<string> CallDeepSeekAPI(string userQuestion)   7      {   8          ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;   9          try  10          {  11              // 设置请求头  12              client.DefaultRequestHeaders.Clear();  13              client.DefaultRequestHeaders.Add("Authorization", $"Bearer {apiKey}");  14              client.DefaultRequestHeaders.Add("Accept", "application/json");  15   16              // 构建请求体  17              var requestBody = new  18              {  19                  model = "deepseek-reasoner", // 根据实际模型调整  20                  messages = new[]  21                  {  22                  new  23                  {  24                      role = "user",  25                      content = userQuestion  26                  }  27              },  28                  temperature = 0.7  29              };  30   31              // 序列化请求体  32              //var jsonContent = JsonSerializer.Serialize(requestBody);  33              var jsonContent = JsonConvert.SerializeObject(requestBody);  34              var content = new StringContent(jsonContent, Encoding.UTF8, "application/json");  35   36              // 发送请求  37              var response = await client.PostAsync(ApiEndpoint, content);  38   39              // 处理响应  40              if (!response.IsSuccessStatusCode)  41              {  42                  throw new Exception($"API请求失败: {response.StatusCode}");  43              }  44   45              var responseContent = await response.Content.ReadAsStringAsync();  46              var resultModel = JsonConvert.DeserializeObject<DeepSeekResponse>(responseContent);  47              if (resultModel != null && resultModel.Choices.Count > 0)  48                  return resultModel.Choices[0].Message.Content;  49              return responseContent;  50          }  51          catch (Exception ex)  52          {  53              // 处理异常  54              return $"调用API时发生错误: {ex.Message}";  55          }  56      }  57  }  58   59   60   61  public class DeepSeekResponse  62  {  63      public string Id { get; set; }  64      public string Object { get; set; }  65      public long Created { get; set; }  66      public string Model { get; set; }  67      public List<Choice> Choices { get; set; }  68      public Usage Usage { get; set; }  69      public string SystemFingerprint { get; set; }  70   71      // 重写ToString方法以便更好地显示对象信息  72      public override string ToString()  73      {  74          return $"DeepSeekResponse(Id={Id}, Object={Object}, Created={Created}, Model={Model}, Choices={string.Join(", ", Choices)}, Usage={Usage}, SystemFingerprint={SystemFingerprint})";  75      }  76  }  77   78  public class Choice  79  {  80      public int Index { get; set; }  81      public Message Message { get; set; }  82      // 其他Choice相关的属性...  83   84      // 重写ToString方法以便更好地显示Choice信息（这里仅展示Index和Message作为示例）  85      public override string ToString()  86      {  87          return $"Choice(Index={Index}, Message={Message})";  88      }  89  }  90   91  public class Message  92  {  93      public string Role { get; set; }  94      public string Content { get; set; }  95      // 其他Message相关的属性...  96  }  97   98  public class Usage  99  { 100      public int PromptTokens { get; set; } 101      public int CompletionTokens { get; set; } 102      public int TotalTokens { get; set; } 103      // 其他Usage相关的属性，包括嵌套的字典等，可以根据需要添加 104  }

 

调用示例

   private async void SendButton_Click(object sender, RoutedEventArgs e)    {        string requestText = RequestTextBox.Text;        if (!string.IsNullOrWhiteSpace(requestText))        {            try            {                              string responseData = await DeepSeekHelper.CallDeepSeekAPI(requestText); // await new DeepSeekApi().CallDeepSeekAPI(chatRequest);                ResponseTextBox.Text = responseData;            }            catch (Exception ex)            {                ResponseTextBox.Text = $"Error: {ex.Message}";            }        }        else        {            MessageBox.Show("Please enter a request.");        }    }

 

 常见问题:

1 发送请求时出错 InnerException = {"请求被中止: 未能创建 SSL/TLS 安全通道。"}

指定使用TLS1.2加密协议,添加如下代码

 ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

2 收到内容为空白

服务器繁忙,请把deepseek-chat模型切换到deepseek-reasoner 试试,或者换个时间再次尝试.

模型区别如下.代码中默认使用了reasoner模型,俗称满血版.

默认账户赠送10元余额.