/// <summary>
/// 初始化策略
/// </summary>
/// <param name="contentType">输出文档类型</param>
private void InitStrategy(string contentType)
{
//输出Json格式
if (ContentType.JSON.Equals(contentType, StringComparison.OrdinalIgnoreCase))
{
this._strategy = ResponseJson.GetInstance();
return;
}
//输出Xml格式
if (ContentType.XML.Equals(contentType, StringComparison.OrdinalIgnoreCase))
{
this._strategy = ResponseXml.GetInstance();
return;
}
//表示输出图片或者文件格式的
if (contentType.StartsWith("image/", StringComparison.OrdinalIgnoreCase) || contentType.IndexOf("octet-stream", StringComparison.OrdinalIgnoreCase) > 0)
{
this._strategy = ResponseFile.GetInstance();
return;
}
//其余 只需直接输出文本均可
this._strategy = ResponseString.GetInstance();
}
/// <summary>
/// 得到当前的实例
/// </summary>
/// <returns></returns>
public static ResponseDataStrategy GetInstance()
{
if (_instance == null)
{
_instance = new ResponseJson();
}
return(_instance);
}
/// <summary>
/// 得到当前的实例
/// </summary>
/// <returns></returns>
public static ResponseDataStrategy GetInstance()
{
if (_instance == null)
{
_instance = new ResponseJson();
}
return _instance;
}