public HttpResponseMessage PreviewFile()
{
try
{
var jsonParams = Request.GetQueryNameValuePairs().ToDictionary(k => k.Key, v => v.Value);
string id = jsonParams["id"];
File file = AssignmentDao.GetFileById(id);
if (file.preview == null)
{
return(new Response(3001, "无法生成预览").Convert());
}
return(HttpUtil.DownloadFile(file.preview, "preview.pdf", false));
}
catch (Exception e)
{
ErrorLogUtil.WriteLogToFile(e, Request);
return(Response.Error());
}
}
public HttpResponseMessage TryDownloadAssignment()
{
try
{
string signature = HttpUtil.GetAuthorization(Request);
if (signature == null || !redis.IsSet(signature))
{
return(new Response(2001, "未登录账户").Convert());
}
bool isLogin = redis.IsSet(signature);
if (!isLogin)
{
return(new Response(2001, "未登录账户").Convert());
}
string id = redis.Get <string>(signature);
var jsonParams = Request.GetQueryNameValuePairs().ToDictionary(k => k.Key, v => v.Value);
int expId = Convert.ToInt32(jsonParams["expId"]);
string stuId = jsonParams["stuId"];
Assignment assignment = AssignmentDao.GetAssignmentsByStuIdAndExpId(stuId, expId);
if (assignment == null)
{
return(new Response(2002, "未找到作业").Convert());
}
string fileId = assignment.file;
File file = AssignmentDao.GetFileById(fileId);
if (file == null)
{
return(new Response(2002, "未找到作业").Convert());
}
string uuid = Guid.NewGuid().ToString();
redis.Set(uuid, file.id, 10);
return(new Response(1001, "获取成功", uuid).Convert());
}
catch (Exception e)
{
ErrorLogUtil.WriteLogToFile(e, Request);
return(Response.Error());
}
}
public HttpResponseMessage DownloadAssignment()
{
try
{
var jsonParams = Request.GetQueryNameValuePairs().ToDictionary(k => k.Key, v => v.Value);
string uuid = jsonParams["uuid"];
if (!redis.IsSet(uuid))
{
return(new Response(2002, "文件下载请求不存在").Convert());
}
string fileId = redis.Get <string>(uuid);
File file = AssignmentDao.GetFileById(fileId);
HttpResponseMessage res = HttpUtil.DownloadFile(file.path.ToString(), file.name.ToString());
redis.Delete(uuid);
return(res);
}
catch (Exception e)
{
ErrorLogUtil.WriteLogToFile(e, Request);
return(Response.Error());
}
}