/// <summary>
/// 对请求数据进行包装，转换为合适的请求类型，并返回对应的负载类型
/// </summary>
/// <param name="data">要发送的数据</param>
/// <param name="contentType">对应的负载类型</param>
/// <param name="extraRequestInfo">额外的请求数据</param>
/// <returns>经过包装的 <see cref="HttpRequestContent"/> 对象</returns>
public virtual HttpRequestContent WrapRequestContent(object data, ContentType?contentType, ExtraRequestInfo extraRequestInfo)
{
if (data == null)
{
return(null);
}
var type = contentType ?? GetPreferContentType(data.GetType()) ?? Setting.DefaultRequestContentType;
var ea = new RequestWrapRequestContentEventArgs(this, data, extraRequestInfo)
{
ContentType = type
};
ea.RequestContent = Setting.ContentPayloadBuilder.WrapRequestContent(data, ea);
GlobalEvents.OnBeforeRequestWrapRequestContent(this, ea);
OnBeforeWrapRequestContent(this, ea);
var content = ea.RequestContent;
contentType = ea.ContentType;
if (content == null)
{
if (data is HttpRequestContent)
{
content = data as HttpRequestContent;
}
else if (data is string)
{
content = new RequestStringContent(data as string, type);
}
else if (data is Stream)
{
content = new RequestCopyStreamContent(data as Stream, type);
}
else if (data is byte[])
{
content = new RequestByteBufferContent(data as byte[], contentType: type);
}
else if (data is IDictionary <string, string> && type != ContentType.Json)
{
content = new RequestFormDataContent(data as IDictionary <string, string>, type);
}
else if (data is XmlDocument || data is XmlNode || data is System.Xml.Linq.XDocument)
{
content = new RequestXmlContent(data, contentType ?? ContentType.Xml);
}
//object
else if (contentType == ContentType.Json)
{
content = new RequestJsonContent(data);
}
else if (contentType == ContentType.Xml)
{
content = new RequestXmlContent(data, type);
}
else
{
content = new RequestObjectContent <object>(data, type);
}
}
//全局事件
GlobalEvents.OnRequestWrapRequestContent(this, ea);
//实例事件
OnRequestWrapRequestContent(this, ea);
content = HttpHandler.WrapRequestContent(this, content, data, contentType);
return(content);
}
/// <summary>
/// 获得对应的数据处理类
/// </summary>
/// <param name="ctx"></param>
/// <param name="streamInvoker"></param>
/// <param name="result"></param>
/// <param name="targetStream">目标流</param>
/// <param name="saveToFilePath">希望保存到的目标文件路径</param>
/// <param name="extraRequestInfo">额外的请求数据信息</param>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public virtual HttpResponseContent GetPreferedResponseType <T>(HttpContext ctx, EventHandler <ResponseStreamContent.RequireProcessStreamEventArgs> streamInvoker = null, T result = default(T), Stream targetStream = null, string saveToFilePath = null, ExtraRequestInfo extraRequestInfo = null)
{
var resultType = typeof(T);
var ea = new GetPreferedResponseTypeEventArgs <T>(this, ctx, result, saveToFilePath, streamInvoker, targetStream, extraRequestInfo);
ea.ResponseContent = Setting.ContentPayloadBuilder.GetResponseContent(result, ea);
GlobalEvents.OnBeforeRequestGetPreferedResponseType(this, ea);
OnBeforeRequestGetPreferedResponseType(this, ea);
var content = ea.ResponseContent;
if (content == null)
{
if (!saveToFilePath.IsNullOrEmpty())
{
content = new ResponseFileContent(ctx, this, saveToFilePath);
}
else if (resultType != typeof(object))
{
if (resultType == typeof(string))
{
content = new ResponseStringContent(ctx, this);
}
else if (resultType == typeof(byte[]))
{
content = new ResponseBinaryContent(ctx, this);
}
else if (resultType == typeof(Image))
{
content = new ResponseImageContent(ctx, this);
}
else if (resultType == typeof(XmlDocument))
{
content = new ResponseXmlContent(ctx, this, (XmlDocument)(object)result);
}
else if (resultType == typeof(EventHandler <ResponseStreamContent.RequireProcessStreamEventArgs>))
{
var r = new ResponseStreamContent(ctx, this);
if (streamInvoker != null)
{
r.RequireProcessStream += streamInvoker;
}
content = r;
}
else if (resultType == typeof(Stream))
{
content = new ResponseCopyStreamContent(ctx, this, targetStream ?? new MemoryStream());
}
else
{
content = new ResponseObjectContent <T>(ctx, this)
{
ObjectInternal = result
}
};
}
else
{
content = null; //为null，等待请求自动判断
}
ea.ResponseContent = content;
}
//Global events
GlobalEvents.OnRequestGetPreferedResponseType(this, ea);
//instance events
OnRequestGetPreferedResponseType(this, ea);
//http handler
HttpHandler.GetPreferedResponseType <T>(this, ctx, content, streamInvoker, result, targetStream);
return(content);
}
