如何在Restsharp调用主体上添加XML请求

Question

我正在开发一个调用API的软件，我必须向该API发送XML请求以获取更多数据。

我已经尝试过request.AddXmlBody(nextID)但是它不起作用，我也尝试过request.AddParameter("text/xml", nextID, ParametreType.RequestBody ) ，但出现错误：XML异常，缺少根元素。

    var client = new RestClient("https://xxxxxxxxxxxxx.xxx");

    client.Authenticator = new HttpBasicAuthenticator("xxxxx", "xxxx");          
    var request = new RestRequest("/xx/xxx/xx/xx/xxxxx", Method.GET);
    string nextID = "<?xml version=\"1.0\" encoding=\"UTF - 8\" ?>< ServiceRequest > < filters > < Criteria field = \"id\" operator= \"GREATER\" > 13782472 </ Criteria ></ filters ></ ServiceRequest > ";
    request.AddHeader("X-Requested-With", "RestSharp");
    request.AddParameter(nextID);
    IRestResponse response = client.Execute(request);

    var xml_text = response.Content;

    string xq1 = "//*[contains(text(),'XXX')]/..";

    XmlDocument xd = new XmlDocument();
    xd.LoadXml(xml_text); 

我想将字符串nextID添加到请求的主体中以获取所需的文件。

Answer 1

感谢@jdweng，我在字符串上的多余空间是我的错误。

此代码有效：

string nextID = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><ServiceRequest> <filters> <Criteria field = \"id\" operator=\"GREATER\"> 13782472 </Criteria></filters></ServiceRequest>"; 
        request.AddHeader("X-Requested-With", "RestSharp");
        request.AddParameter("text/xml", nextID, ParameterType.RequestBody);