要解决本地部署的Exchange OWA REST API无法正确处理CORS预检请求的问题,可以使用以下代码示例:
public class CorsHandler : DelegatingHandler
{
protected override Task SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
if (request.Method == HttpMethod.Options)
{
var response = new HttpResponseMessage(HttpStatusCode.OK);
response.Headers.Add("Access-Control-Allow-Origin", "*");
response.Headers.Add("Access-Control-Allow-Headers", "Content-Type");
response.Headers.Add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
var tcs = new TaskCompletionSource();
tcs.SetResult(response);
return tcs.Task;
}
return base.SendAsync(request, cancellationToken);
}
}
HttpConfiguration config = new HttpConfiguration();
config.MessageHandlers.Add(new CorsHandler());
[HttpGet]
[Route("api/data")]
public IHttpActionResult GetData()
{
// 处理实际请求
// ...
// 设置CORS响应头
var response = Request.CreateResponse(HttpStatusCode.OK, data);
response.Headers.Add("Access-Control-Allow-Origin", "*");
return ResponseMessage(response);
}
通过以上代码示例,您可以在本地部署的Exchange OWA REST API中正确处理CORS预检请求。请确保将代码中的路由和处理实际请求的方法适应于您的实际情况。