/// <summary>
/// 保存单个文件到磁盘
/// </summary>
/// <param name="fileContent">文件内容</param>
/// <param name="fileNewName">文件新名称</param>
/// <returns>是否保存成功</returns>
internal static Boolean InternalAdminSaveUploadFile(Byte[] fileContent, String fileNewName)
{
if (!AdminManager.HasPermission(PermissionType.Administrator))
{
throw new NoPermissionException();
}
if (String.IsNullOrEmpty(fileNewName))
{
throw new InvalidInputException("Filename can not be NULL!");
}
FileInfo fi = new FileInfo(fileNewName);
if (!UploadsManager.CheckFileExtension(fi.Extension, ALLOW_EXTENSTIONS))
{
throw new InvalidInputException("Filename is INVALID!");
}
String savePath = Path.Combine(ConfigurationManager.UploadDirectoryPath, fileNewName);
if (File.Exists(savePath))
{
throw new InvalidInputException("Filename exists!");
}
File.WriteAllBytes(savePath, fileContent);
return(true);
}
/// <summary>
/// 保存单个文件到磁盘
/// </summary>
/// <param name="file">上传的文件</param>
/// <returns>是否保存成功</returns>
public static IMethodResult AdminSaveUploadFile(HttpPostedFileBase file)
{
if (!AdminManager.HasPermission(PermissionType.Administrator))
{
throw new NoPermissionException();
}
if (file == null)
{
return(MethodResult.FailedAndLog("No file was uploaded!"));
}
if (String.IsNullOrEmpty(file.FileName))
{
return(MethodResult.FailedAndLog("Filename can not be NULL!"));
}
FileInfo fi = new FileInfo(file.FileName);
if (!UploadsManager.CheckFileExtension(fi.Extension, ALLOW_EXTENSTIONS))
{
return(MethodResult.FailedAndLog("Filename is INVALID!"));
}
if (file.ContentLength <= 0)
{
return(MethodResult.FailedAndLog("You can not upload empty file!"));
}
String fileNewName = MD5Encrypt.EncryptToHexString(fi.Name + DateTime.Now.ToString("yyyyMMddHHmmssffff"), true) + fi.Extension;
String savePath = Path.Combine(ConfigurationManager.UploadDirectoryPath, fileNewName);
if (File.Exists(savePath))
{
return(MethodResult.FailedAndLog("Filename exists!"));
}
file.SaveAs(savePath);
return(MethodResult.SuccessAndLog <String>(fileNewName, "Admin upload file, name = {0}, origin = {1}", fileNewName, fi.Name));
}
/// <summary>
/// 导入题目（不存在时返回null）
/// </summary>
/// <param name="request">Http请求</param>
/// <param name="fileType">文件类型</param>
/// <param name="uploadType">上传方式</param>
/// <param name="content">文件内容</param>
/// <param name="file">上传文件</param>
/// <returns>题目数据是否插入成功集合（全部失败时为null）</returns>
public static IMethodResult AdminImportProblem(HttpRequestBase request, String fileType, String uploadType, String content, HttpPostedFileBase file)
{
if (!AdminManager.HasPermission(PermissionType.SuperAdministrator))
{
throw new NoPermissionException();
}
if (!String.Equals("1", fileType))
{
return(MethodResult.FailedAndLog("File type is INVALID!"));
}
if (String.Equals("1", uploadType))//从文件上传
{
if (file == null)
{
return(MethodResult.FailedAndLog("No file was uploaded!"));
}
StreamReader sr = new StreamReader(file.InputStream);
content = sr.ReadToEnd();
}
//转换题库模型
List <ProblemEntity> problems = null;
List <Byte[]> datas = null;
List <Dictionary <String, Byte[]> > images = null;
Dictionary <String, Byte[]> imagefiles = new Dictionary <String, Byte[]>();
if (!ProblemImport.TryImportFreeProblemSet(content, out problems, out datas, out images))
{
return(MethodResult.FailedAndLog("File content is INVALID!"));
}
if (problems == null || problems.Count == 0)
{
return(MethodResult.FailedAndLog("No problem was imported!"));
}
//处理题目及图片路径
for (Int32 i = 0; i < problems.Count; i++)
{
problems[i].IsHide = true;
problems[i].LastDate = DateTime.Now;
if (images[i] == null)
{
continue;
}
String uploadRoot = ConfigurationManager.UploadDirectoryUrl;
foreach (KeyValuePair <String, Byte[]> pair in images[i])
{
if (pair.Value == null || !pair.Key.Contains("."))
{
continue;
}
String oldUrl = pair.Key;
String fileNewName = MD5Encrypt.EncryptToHexString(oldUrl + DateTime.Now.ToString("yyyyMMddHHmmssffff"), true) + pair.Key.Substring(pair.Key.LastIndexOf('.'));
String newUrl = uploadRoot + fileNewName;
problems[i].Description = problems[i].Description.Replace(oldUrl, newUrl);
problems[i].Input = problems[i].Input.Replace(oldUrl, newUrl);
problems[i].Output = problems[i].Output.Replace(oldUrl, newUrl);
problems[i].Hint = problems[i].Hint.Replace(oldUrl, newUrl);
imagefiles[fileNewName] = pair.Value;
}
}
//将题目插入到数据库
List <Int32> pids = ProblemRepository.Instance.InsertEntities(problems);
if (pids == null || pids.Count == 0)
{
return(MethodResult.FailedAndLog("Failed to import problem!"));
}
//保存题目数据
Dictionary <Int32, Boolean> dataadded = new Dictionary <Int32, Boolean>();
for (Int32 i = 0; i < pids.Count; i++)
{
if (pids[i] < 0)
{
continue;
}
try
{
if (datas[i] != null)
{
IMethodResult ret = ProblemDataManager.InternalAdminSaveProblemData(pids[i], datas[i]);
if (!ret.IsSuccess)
{
return(ret);
}
dataadded[pids[i]] = true;
}
}
catch
{
dataadded[pids[i]] = false;
}
ProblemCache.IncreaseProblemSetCountCache(); //更新缓存
ProblemCache.IncreaseProblemIDMaxCache(); //更新缓存
ProblemCache.RemoveProblemSetCache(GetProblemPageIndex(pids[i])); //删除缓存
}
//保存题目图片
foreach (KeyValuePair <String, Byte[]> pair in imagefiles)
{
try
{
UploadsManager.InternalAdminSaveUploadFile(pair.Value, pair.Key);
}
catch { }
}
return(MethodResult.SuccessAndLog <Dictionary <Int32, Boolean> >(dataadded, "Admin import problem, id = {0}", String.Join(",", pids)));
}
