/// <summary>
/// 初始化控制器及相关请求参数
/// </summary>
/// <param name="xmlFormat"></param>
private void Init(string xmlFormat)
{
//target = StructureMap.ObjectFactory.GetInstance<WeixinController>();//使用IoC的在这里必须注入，不要直接实例化
target = new WeixinController();
inputStream = new MemoryStream();
var xml = string.Format(xmlFormat, DateTimeHelper.GetWeixinDateTime(DateTime.Now));
var bytes = System.Text.Encoding.UTF8.GetBytes(xml);
inputStream.Write(bytes, 0, bytes.Length);
inputStream.Flush();
inputStream.Seek(0, SeekOrigin.Begin);
target.SetFakeControllerContext(inputStream);
}