/// <summary>
/// 加载用户收藏的图片
/// </summary>
/// <param name="context"></param>
/// <param name="loadCount"></param>
/// <param name="loadSize"></param>
/// <param name="user"></param>
private void LoadCollectionPicture(HttpContext context, int loadCount, int loadSize, User user)
{
Picture.BLL.PictureCollectBLL bllCollect = new Picture.BLL.PictureCollectBLL();
var list = bllCollect.GetCollectWithPictureInfo(loadCount + 1, loadSize, new { CuId = user.UId }, "CollectDate").Select(p => new { imgUrl = CommonHelper.GetSmallImgPath(p.LargeImgPath), uploadDate = p.UploadDate, collectCount = p.CollectCount, pId = p.PId, width = p.Width, height = p.Height });
//返回数据
System.Web.Script.Serialization.JavaScriptSerializer jss = new System.Web.Script.Serialization.JavaScriptSerializer();
context.Response.Write(jss.Serialize(list));
}
public void ProcessRequest(HttpContext context)
{
/*
* 约定
* 1 用户未登入
* 2 图片不存在
* 3 在点击收藏情况下,图片已收藏
* 4 在删除收藏的情况下,图片已删除收藏
* 5 未知错误: 图片更新后返回的影响条数不为1
*
*/
context.Response.ContentType = "text/plain";
int pId = int.Parse(context.Request["pId"]);
bool isCollect = bool.Parse(context.Request["isCollect"]);
//用户登入校验
User user = context.Session["current_user"] as User;
if (user == null)
{
CollectError(context, 1);
return;
}
Picture.BLL.PictureCollectBLL collectBll = new Picture.BLL.PictureCollectBLL();
Picture.BLL.PictureInfoBLL pictureBll = new Picture.BLL.PictureInfoBLL();
if (!isCollect)
{
//收藏
//先看图片是否存在
var pic = pictureBll.QuerySingle(new { PId = pId });
if (pic==null)
{
CollectError(context, 2);
return;
}
//是否已经收藏了
int cCount = collectBll.QueryCount(new
{
PId = pId,
__o = "and",
CuId = user.UId
});
if (cCount > 0)
{
CollectError(context, 3);
return;
}
//用户已登入,图片存在,图片未收藏
//添加收藏
collectBll.Insert(new Picture.Model.PictureCollectModel()
{
CollectDate = DateTime.Now,
CuId = user.UId,
PId = pId
});
pic.CollectCount++;
//修改图片数据
if (pictureBll.Update(pic)!=1)
{
CollectError(context, 5);
return;
}
}
else
{
//取消收藏
//图片是否存在
var pic = pictureBll.QuerySingle(new { PId = pId });
if (pic == null)
{
CollectError(context, 2);
return;
}
//是否已经收藏了
var collect = collectBll.QuerySingle(new
{
PId=pId,
__o="and",
CuId=user.UId
});
//如果已经取消收藏了
if (collect==null)
{
CollectError(context, 4);
return;
}
//用户已登入,图片存在,图片已收藏
//删除收藏
collectBll.Delete(collect.CId);
//修改图片数据
pic.CollectCount--;
if (pictureBll.Update(pic) != 1)
{
CollectError(context, 5);
return;
}
}
//添加/删除收藏成功
context.Response.Write(JSONHelper.ToJSONString(new
{
isCollect = true
}));
}
