在Blazor服务器应用程序中使用Graph API是一种实现数据可视化的有趣方法。以下是使用Graph API从Microsoft Graph中检索用户数据的步骤。
private static DateTime ConvertUtcToLocal(DateTime utcTime)
{
var timeZone = TimeZoneInfo.Local; //获取本地时区信息
return TimeZoneInfo.ConvertTimeFromUtc(utcTime, timeZone);
}
string[] scopes = new[] { "user.read" };
const string graphApiEndpoint = "https://graph.microsoft.com/v1.0/me";
var builder = WebAssemblyAuthenticationCoreBuilder.CreateBuilder()
.WithAuthority(authority)
.WithScopes(scopes)
.AddLogging(logging => logging.AddBrowserConsole());
var provider = builder.Build();
var graphApiUri = new Uri(graphApiEndpoint);
var request = new HttpRequestMessage(HttpMethod.Get, graphApiUri);
await provider.AuthenticateRequestAsync(request);
var client = _clientFactory.CreateClient();
var response = await client.SendAsync(request);
if (!response.IsSuccessStatusCode)
{
throw new Exception($"Could not retrieve user profile ({response.StatusCode}): {await response.Content.ReadAsStringAsync()}");
}
var json = await response.Content.ReadAsStringAsync();
var jobject = JsonSerializer.Deserialize(json, new JsonSerializerOptions
{
PropertyNamingPolicy = JsonNamingPolicy.CamelCase
});
var userDisplayName = jobject.GetProperty("displayName").GetString();
在上面的代码示例中,我们首先定义了一个scopes数组以获取用户读取的访问权限,然后添加日志记录以便调试。我们使用WebAssemblyAuthenticationCoreBuilder创建了身份验证提供程序,并将它用于Graph API的请求。
最后,我们检测响应是否成功,并从返回的JSON响应中检索用户的displayName属性。