public void ProcessRequest(HttpContext context)
{
//并不知道如何用参数获得文件只能用索引的方式，反正就一张图
context.Response.ContentType = "text/plain";
var file = context.Request.Files[0];
string tags = context.Request["tags"];
string pictreSummary = context.Server.HtmlEncode(context.Request["summary"]);
List<String> Tags = new List<String>();
foreach (var item in tags.Split(new char[] { ',' }))
{
Tags.Add(item.Trim());
}
//去除重复的标签
HashSet<string> hsTag = new HashSet<string>(Tags);
#region 用户登入校验
if (context.Session["current_user"] == null)
{
PictureUploadError(context, 1);
return;
}
User user = context.Session["current_user"] as User;
#endregion
#region 用户是否被禁止上传图片
if (user.UserStatus == 1)
{
PictureUploadError(context, 4);
return;
}
#endregion
#region 文件类型校验
string fileName = file.FileName;
string extName = Path.GetExtension(fileName);
if (!(extName == ".jpeg" || extName == ".jpg" || extName == ".bmp" || extName == ".png" || extName == ".gif"))
{
PictureUploadError(context, 2);
return;
}
#endregion
#region 文件大小校验
if (file.ContentLength > IMAGE_SIZE_LIMIT)
{
PictureUploadError(context, 3);
return;
}
#endregion
#region 保存文件
#region 保存到磁盘
//大小图所在的文件夹的相对路径
string bigRelativePathDir = BIG_IMAGE_SAVE_PATH + DateTime.Now.ToString("yyyyMMdd");
string smallRelativePathDir = BIG_IMAGE_SAVE_PATH + "SmallImg_" + DateTime.Now.ToString("yyyyMMdd");
//大,小图所在的文件夹绝对路径
string bigPathDir = context.Request.MapPath("../" + bigRelativePathDir);
string smallPathDir = context.Request.MapPath("../" + smallRelativePathDir);
//创建文件夹
if (!Directory.Exists(bigPathDir))
{
Directory.CreateDirectory(bigPathDir);
Directory.CreateDirectory(smallPathDir);
}
//算出文件的MD5
string fileMD5Name = GetMD5FromFile(file.InputStream);
string fileExt = Path.GetExtension(file.FileName);
//大,小图所在的相对路径
string bigImgRelativePath = bigRelativePathDir + "/" + fileMD5Name + fileExt;
string smallImgRelativePath = smallRelativePathDir + "/" + "small_" + fileMD5Name + ".jpg";
//大,小图所在的绝对路径
string bigImgPath = context.Request.MapPath("../" + bigImgRelativePath);
string smallImgPath = context.Request.MapPath("../" + smallImgRelativePath);
//保存
file.SaveAs(bigImgPath);
PictureProcessHelper.MakeThumbnail(bigImgPath, smallImgPath, 400, 0, "W");
#endregion
#region 保存到数据库
#region 获取标签对象,判断标签是否已经存在了，不存在则创建
Picture.BLL.TagBLL tagBll = new Picture.BLL.TagBLL();
List<Picture.Model.TagModel> tagModelList = new List<Picture.Model.TagModel>();
Picture.Model.TagModel tempModel = null;
foreach (var item in hsTag)
{
tempModel = tagBll.QuerySingle(new { TagName = item });
if (tempModel == null)
{
int tagId = tagBll.Insert(new Picture.Model.TagModel()
{
TagName = item
});
tagModelList.Add(new Picture.Model.TagModel()
{
TagName = item,
TId = tagId
});
}
else
{
tagModelList.Add(tempModel);
}
tempModel = null;
}
#endregion
#region 更新索引
foreach (var item in tagModelList)
{
IndexManager.tagIndex.Add(item);
}
#endregion
#region 保存图片
Picture.BLL.PictureInfoBLL pictureBll = new Picture.BLL.PictureInfoBLL();
int width = 0;
int height = 0;
PictureProcessHelper.GetPictureShap(bigImgPath, out width, out height);
Picture.Model.PictureInfoModel model = new Picture.Model.PictureInfoModel()
{
CollectCount = 0,
Height = height,
Width = width,
ImgSummary = pictreSummary,
LargeImgPath = bigImgRelativePath,
UId = user.UId,
UploadDate = DateTime.Now
};
int pId = pictureBll.Insert(model);
#endregion
#region 保存图片与标签的关系
Picture.BLL.TagImgRelationBLL bllTIR = new Picture.BLL.TagImgRelationBLL();
foreach (var item in tagModelList)
{
bllTIR.Insert(new Picture.Model.TagImgRelationModel()
{
ImgId = pId,
TagId = item.TId
});
}
#endregion
#endregion
#endregion
context.Response.Write(JSONHelper.ToJSONString(new { isUpload = true }));
}
/// <summary>
/// 从索引库中检索关键字
/// </summary>
private void SearchFromIndexData()
{
string indexPath = Context.Server.MapPath("IndexData");
FSDirectory directory = FSDirectory.Open(new DirectoryInfo(indexPath), new NoLockFactory());
IndexReader reader = IndexReader.Open(directory, true);
IndexSearcher searcher = new IndexSearcher(reader);
//搜索条件
PhraseQuery query = new PhraseQuery();
//把用户输入的关键字进行分词
foreach (string word in Picture.Utility.SplitContent.SplitWords(Request["SearchKey"]))
{
query.Add(new Term("summary", word));
}
//query.Add(new Term("content", "C#"));//多个查询条件时 为且的关系
query.SetSlop(100); //指定关键词相隔最大距离
//TopScoreDocCollector盛放查询结果的容器
TopScoreDocCollector collector = TopScoreDocCollector.create(1000, true);
searcher.Search(query, null, collector);//根据query查询条件进行查询，查询结果放入collector容器
//TopDocs 指定0到GetTotalHits() 即所有查询结果中的文档 如果TopDocs(20,10)则意味着获取第20-30之间文档内容 达到分页的效果
ScoreDoc[] docs = collector.TopDocs(0, collector.GetTotalHits()).scoreDocs;
//展示数据实体对象集合
var pictureInfoModel = new List<Picture.Model.PictureInfoModel>();
for (int i = 0; i < docs.Length; i++)
{
int docId = docs[i].doc;//得到查询结果文档的id（Lucene内部分配的id）
Document doc = searcher.Doc(docId);//根据文档id来获得文档对象Document
Picture.Model.PictureInfoModel picture = new Picture.Model.PictureInfoModel();
picture.ImgSummary = doc.Get("summary");
//book.ContentDescription = doc.Get("content");//未使用高亮
//搜索关键字高亮显示 使用盘古提供高亮插件
//book.ContentDescription = Picture.Utility.SplitContent.HightLight(Request.QueryString["SearchKey"], doc.Get("content"));
picture.PId= Convert.ToInt32(doc.Get("id"));
pictureInfoModel.Add(picture);
}
Repeater1.DataSource = pictureInfoModel;
Repeater1.DataBind();
}
