42 lines
1.6 KiB
Markdown
42 lines
1.6 KiB
Markdown
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// 获取微信小程序OpenID
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private async Task<string> GetWxOpenIdAsync(string code)
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{
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try
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{
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var appId = configuration["WeChat:AppId"];
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var appSecret = configuration["WeChat:AppSecret"];
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if (string.IsNullOrEmpty(appId) || string.IsNullOrEmpty(appSecret))
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{
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throw new Exception("微信小程序配置缺失");
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}
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var httpClient = _httpClientFactory.CreateClient();
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var url = $"https://api.weixin.qq.com/sns/jscode2session?appid={appId}&secret={appSecret}&js_code={code}&grant_type=authorization_code";
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var response = await httpClient.GetAsync(url);
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response.EnsureSuccessStatusCode();
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var responseContent = await response.Content.ReadAsStringAsync();
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var jsonDocument = JsonDocument.Parse(responseContent);
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if (jsonDocument.RootElement.TryGetProperty("openid", out var openidElement))
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{
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return openidElement.GetString();
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}
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else
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{
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// 如果有错误信息，抛出异常
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if (jsonDocument.RootElement.TryGetProperty("errcode", out var errcodeElement) &&
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jsonDocument.RootElement.TryGetProperty("errmsg", out var errmsgElement))
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{
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throw new Exception($"获取OpenID失败: {errcodeElement.GetInt32()} - {errmsgElement.GetString()}");
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}
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throw new Exception("获取OpenID失败: 响应中未包含openid");
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}
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}
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catch (Exception ex)
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{
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throw new Exception($"获取微信OpenID时发生错误: {ex.Message}");
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}
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}
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