/// <summary>
/// 保存远程文件到本地
/// </summary>
/// <param name="sourceUri">URI地址</param>
/// <returns>上传后的路径</returns>
public string RemoteSaveAs(string sourceUri)
{
if (!IsExternalIPAddress(sourceUri))
{
return("{\"status\": 0, \"msg\": \"INVALID_URL\"}");
}
var request = HttpWebRequest.Create(sourceUri) as HttpWebRequest;
using (var response = request.GetResponse() as HttpWebResponse)
{
if (response.StatusCode != HttpStatusCode.OK)
{
return("{\"status\": 0, \"msg\": \"Url returns " + response.StatusCode + ", " + response.StatusDescription + "\"}");
}
if (response.ContentType.IndexOf("image") == -1)
{
return("{\"status\": 0, \"msg\": \"Url is not an image\"}");
}
try
{
byte[] byteData = FileHelp.ConvertStreamToByteBuffer(response.GetResponseStream());
return(FileSaveAs(byteData, sourceUri, false, false));
}
catch (Exception e)
{
return("{\"status\": 0, \"msg\": \"抓取错误：" + e.Message + "\"}");
}
}
}
/// <summary>
/// 统一保存文件
/// </summary>
private void FileSave(HttpContext context, HttpPostedFile upFiles, bool isWater)
{
if (upFiles == null)
{
showError(context, "请选择要上传文件！");
return;
}
//检查是否允许匿名上传
/*if (sysConfig.fileanonymous == 0 && !new ManagePage().IsAdminLogin() && !new BasePage().IsUserLogin())
* {
* showError(context, "禁止匿名非法上传！");
* return;
* }*/
//获取文件信息
string fileName = upFiles.FileName;
byte[] byteData = FileHelp.ConvertStreamToByteBuffer(upFiles.InputStream); //获取文件流
//开始上传
string remsg = new UpLoad().FileSaveAs(byteData, fileName, false, isWater);
Dictionary <string, object> dic = JSON.Deserialize <Dictionary <string, object> >(remsg);
string status = dic["status"].ToString();
string msg = dic["msg"].ToString();
if (status == "0")
{
showError(context, msg);
return;
}
string filePath = dic["path"].ToString(); //取得上传后的路径
showSuccess(context, fileName, filePath); //输出成功提示
}
private void UpLoadFile(HttpContext context)
{
Model.sysconfig sysConfig = YTS.SystemService.GlobalSystemService.GetInstance().Config.Get <Model.sysconfig>();
//检查是否允许匿名上传
/*if (sysConfig.fileanonymous == 0 && !new ManagePage().IsAdminLogin() && !new BasePage().IsUserLogin())
* {
* context.Response.Write("{\"status\": 0, \"msg\": \"禁止匿名非法上传！\"}");
* return;
* }*/
string _delfile = DTRequest.GetString("DelFilePath"); //要删除的文件
string fileName = DTRequest.GetString("name"); //文件名
byte[] byteData = FileHelp.ConvertStreamToByteBuffer(context.Request.InputStream); //获取文件流
bool _iswater = false; //默认不打水印
bool _isthumbnail = false; //默认不生成缩略图
if (DTRequest.GetQueryString("IsWater") == "1")
{
_iswater = true;
}
if (DTRequest.GetQueryString("IsThumbnail") == "1")
{
_isthumbnail = true;
}
if (byteData.Length == 0)
{
context.Response.Write("{\"status\": 0, \"msg\": \"请选择要上传文件！\"}");
return;
}
UpLoad upLoad = new UpLoad();
string msg = upLoad.FileSaveAs(byteData, fileName, _isthumbnail, _iswater);
//删除已存在的旧文件
if (!string.IsNullOrEmpty(_delfile))
{
upLoad.DeleteFile(_delfile);
}
//返回成功信息
context.Response.Write(msg);
context.Response.End();
}
Model.sysconfig sysConfig = YTS.SystemService.GlobalSystemService.GetInstance().Config.Get <Model.sysconfig>(); //系统配置
public void ProcessRequest(HttpContext context)
{
string sitepath = DTRequest.GetQueryString("site");
int id = DTRequest.GetQueryInt("id");
if (string.IsNullOrEmpty(sitepath))
{
context.Response.Write("出错了，站点传输参数不正确！");
return;
}
//获得下载ID
if (id == 0)
{
context.Response.Redirect(new Web.UI.BasePage().getlink(sitepath,
new Web.UI.BasePage().linkurl("error", "?msg=" + Utils.UrlEncode("出错了，文件参数传值不正确！"))));
return;
}
//检查下载记录是否存在
BLL.article_attach bll = new BLL.article_attach();
if (!bll.Exists(id))
{
context.Response.Redirect(new Web.UI.BasePage().getlink(sitepath,
new Web.UI.BasePage().linkurl("error", "?msg=" + Utils.UrlEncode("出错了，您要下载的文件不存在或已经被删除！"))));
return;
}
Model.article_attach model = bll.GetModel(id);
//检查积分是否足够
if (model.point > 0)
{
//检查用户是否登录
Model.users userModel = new Web.UI.BasePage().GetUserInfo();
if (userModel == null)
{
//自动跳转URL
HttpContext.Current.Response.Redirect(new Web.UI.BasePage().getlink(sitepath, new Web.UI.BasePage().linkurl("login")));
}
//如果该用户未曾下载过该附件
if (!bll.ExistsLog(model.id, userModel.id))
{
//检查积分
if (model.point > userModel.point)
{
context.Response.Redirect(new Web.UI.BasePage().getlink(sitepath,
new Web.UI.BasePage().linkurl("error", "?msg=" + Utils.UrlEncode("出错啦，您的积分不足支付本次下载！"))));
return;
}
//扣取积分
int result = new BLL.user_point_log().Add(userModel.id, userModel.user_name, model.point * -1, "下载附件：“" + model.file_name + "”，扣减积分", false);
//添加下载记录
if (result > 0)
{
bll.AddLog(userModel.id, userModel.user_name, model.id, model.file_name);
}
}
}
//下载次数+1
bll.UpdateField(id, "down_num=down_num+1");
//检查文件本地还是远程
if (model.file_path.ToLower().StartsWith("http://") || model.file_path.ToLower().StartsWith("https://"))
{
var request = System.Net.HttpWebRequest.Create(model.file_path) as System.Net.HttpWebRequest;
using (var response = request.GetResponse() as System.Net.HttpWebResponse)
{
if (response.StatusCode != System.Net.HttpStatusCode.OK)
{
context.Response.Redirect(new Web.UI.BasePage().getlink(sitepath,
new Web.UI.BasePage().linkurl("error", "?msg=" + Utils.UrlEncode("出错了，您要下载的文件不存在或已经被删除！"))));
return;
}
byte[] byteData = FileHelp.ConvertStreamToByteBuffer(response.GetResponseStream());
context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); //解决中文乱码
context.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(model.file_name)); //解决中文文件名乱码
context.Response.AddHeader("Content-length", byteData.Length.ToString());
context.Response.ContentType = "application/octet-stream";
context.Response.BinaryWrite(byteData);
context.Response.Flush();
context.Response.End();
}
return;
}
else
{
//取得文件物理路径
string fullFileName = Utils.GetMapPath(model.file_path);
if (!File.Exists(fullFileName))
{
context.Response.Redirect(new Web.UI.BasePage().getlink(sitepath,
new Web.UI.BasePage().linkurl("error", "?msg=" + Utils.UrlEncode("出错了，您要下载的文件不存在或已经被删除！"))));
return;
}
FileInfo file = new FileInfo(fullFileName); //路径
context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); //解决中文乱码
context.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(model.file_name)); //解决中文文件名乱码
context.Response.AddHeader("Content-length", file.Length.ToString());
context.Response.ContentType = "application/octet-stream";
context.Response.WriteFile(file.FullName);
context.Response.End();
}
}