/// <summary>
/// 从本地获取预览文件
/// </summary>
/// <param name="softData"></param>
/// <param name="previewDataResult"></param>
/// <returns></returns>
private bool GetPreViewDataFromLocal(SoftData softData, out PreViewResult previewDataResult)
{
previewDataResult = new PreViewResult {
PreViewAddresses = new List <string>()
};
var localDir = ConvertToLocalDir(softData);
if (Directory.Exists(localDir))
{
var files = Directory.GetFiles(localDir);
previewDataResult.PreViewAddresses = files; // TODO 将物理路径转换为虚拟路径
}
return(previewDataResult.PreViewAddresses.Count > 0);
}
/// <summary>
/// 预览处理
/// </summary>
/// <param name="softData"></param>
/// <returns></returns>
public IHttpActionResult Get(SoftData softData)
{
PreViewResult preViewResult;
// 从本地缓存获取
if (!GetPreViewDataFromLocal(softData, out preViewResult))
{
// 从OSS上获取文件放到本地缓存
if (GetPreViewDataFromOss(softData.SoftAddress))
{
// 从本地缓存获取
if (!GetPreViewDataFromLocal(softData, out preViewResult))
{
// TODO 打日志 - 从oss获取文件成功, 但是本地找不到
}
}
else
{
// todo 打日志 - 从oss获取文件失败
}
}
return(Json(preViewResult));
}
/// <summary>
/// 将数据库地址转换为本地地址
/// </summary>
/// <param name="softAddress">数据库地址</param>
/// <remarks>何士雄 2016-06-15</remarks>
/// <returns></returns>
private string ConvertToLocalDir(SoftData softData)
{
var match = Regex.Match(softData.SoftAddress, "{%.+?%}(?<address>.+?)\\..+?$");
return(match.Success ? HttpContext.Current.Server.MapPath(match.Result("${address}") + "/") : "");
}