“readassync<string>”和“readasstringasync”应该用于什么?

应该怎么做 HttpContentExtensions.ReadAsAsync<string> 和 HttpContent.ReadAsStringAsync 是否用于?

他们似乎做了相似的事情,但工作方式却很奇怪。下面是一些测试及其输出。在某些情况下 JsonReaderException 在某些情况下,会抛出JSON,但会输出附加转义字符。

我最终在我的代码库中使用了这两个函数,但是如果我能理解它们的工作原理,我希望能在一个函数上进行对齐。

//Create data and serialise to JSON
var data = new
{
    message = "hello world"
};
string dataAsJson = JsonConvert.SerializeObject(data);

//Create request with data
HttpConfiguration config = new HttpConfiguration();
HttpRequestMessage request = new HttpRequestMessage();
request.SetConfiguration(config);
request.Method = HttpMethod.Post;
request.Content = new StringContent(dataAsJson, Encoding.UTF8, "application/json");

string requestContentT = request.Content.ReadAsAsync<string>().Result; // -> JsonReaderException: Error reading string.Unexpected token: StartObject.Path '', line 1, position 1.
string requestContentS = request.Content.ReadAsStringAsync().Result; // -> "{\"message\":\"hello world\"}"

//Create response from request with same data
HttpResponseMessage responseFromRequest = request.CreateResponse(HttpStatusCode.OK, dataAsJson, "application/json");

string responseFromRequestContentT = responseFromRequest.Content.ReadAsAsync<string>().Result; // -> "{\"message\":\"hello world\"}"
string responseFromRequestContentS = responseFromRequest.Content.ReadAsStringAsync().Result; // -> "\"{\\\"message\\\":\\\"hello world\\\"}\""

//Create a standalone new response
HttpResponseMessage responseNew = new HttpResponseMessage();
responseNew.Content = new StringContent(dataAsJson, Encoding.UTF8, "application/json");

string responseNewContentT = responseNew.Content.ReadAsAsync<string>().Result; // -> JsonReaderException: Error reading string.Unexpected token: StartObject.Path '', line 1, position 1.
string responseNewContentS = responseNew.Content.ReadAsStringAsync().Result; // -> "{\"message\":\"hello world\"}"