ASP.NET MVC4使用MongoDB制作相册管理

ASP MVC4使用MongoDB制作相册管理实例分享

TIPS:1.Image转成Base64保存到mongodb字段
         2.数据模型是嵌套的关联 

首先定义Model层: 

public class Photo : IEquatable<Photo> { [Required] public string PhotoName { get; set; } [Required] public string PhotoDescription { get; set; } public string ServerPath { get; set; } public Photo() { } public Photo(string name, string desc) { PhotoName = name; PhotoDescription = desc; } public bool Equals(Photo other) { return string.Equals(PhotoName, other.PhotoName); } } public interface IAlbumIterable { bool HasNext(); Photo Current(); Photo Next(); } public interface IPhotosAggregable { IAlbumIterable GetIterator(); } public class AlbumIterator : IAlbumIterable { private Album collection; private int count; public AlbumIterator(Album album) { collection = album; } public Photo Current() { if (count < collection.Count) return collection[count++]; else throw new IndexOutOfRangeException(); } public bool HasNext() { if (count < collection.Count - 1) return true; else return false; } public Photo Next() { if (HasNext()) return collection[++count]; else throw new IndexOutOfRangeException(); } } public class Album : IPhotosAggregable { [BsonId] public ObjectId Id { get; set; } [Required] public string Name { get; set; } [Required] public string Description { get; set; } public string Owner { get; set; } public Photo TitlePhoto { get; set; } [BsonDateTimeOptions(Kind = DateTimeKind.Local,Representation =BsonType.DateTime)] public DateTime CreationTime { get; set; } public IList<Photo> Pictures { get; set; } public Album() { Pictures = new List<Photo>(); TitlePhoto = new Photo(); } public Album(string name, string owner, Photo pic) { Name = name; Owner = owner; TitlePhoto = pic; Pictures = new List<Photo>(); TitlePhoto = new Photo(); } public bool InsertPicture(Photo pic) { if (!Pictures.Contains(pic)) { Pictures.Add(pic); return true; } else throw new ArgumentException(); } public bool InsertPictures(List<Photo> photos) { foreach(var photo in photos) { if (!Pictures.Contains(photo)) { Pictures.Add(photo); } else throw new ArgumentException(); } return true; } public bool RemovePicture(Photo pic) { Pictures.Remove(pic); return true; } public int Count { get { return Pictures.Count; } } public Photo this[int index] { get { return Pictures[index]; } set { Pictures[index] = value; } } public IAlbumIterable GetIterator() { return new AlbumIterator(this); } }

 Services层的MongoAlbumPerformer.cs和ServerPathFinder.cs代码如下: 

public class MongoAlbumPerformer { protected static IMongoClient client; protected static IMongoDatabase database; private static IMongoCollection<Album> collection; private string collectionName; public MongoAlbumPerformer(string databaseName, string collectionName) { client = new MongoClient(ConfigurationManager.ConnectionStrings["mongoDB"].ConnectionString); database = client.GetDatabase(databaseName); this.collectionName = collectionName; collection = database.GetCollection<Album>(collectionName, new MongoCollectionSettings { AssignIdOnInsert = true }); } public void SetCollection(string collectionName) { this.collectionName = collectionName; collection = database.GetCollection<Album>(collectionName); } public void CreateAlbum(Album album) { var document = new Album { Name = album.Name, Owner = HttpContext.Current.User.Identity.Name, Description = album.Description, CreationTime = DateTime.Now, TitlePhoto = album.TitlePhoto, Pictures = album.Pictures }; collection.InsertOne(document); } public List<Album> GetAlbumsByUserName(string username) { var projection = Builders<Album>.Projection .Include(a => a.Name) .Include(a => a.Description) .Include(a => a.TitlePhoto) .Include(a=>a.CreationTime); var result = collection .Find(a => a.Owner == HttpContext.Current.User.Identity.Name) .Project<Album>(projection).ToList(); return result; } public Album GetPicturesByAlbumName(string albumName) { var projection = Builders<Album>.Projection .Include(a => a.Pictures); var result = collection .Find(a => a.Owner == HttpContext.Current.User.Identity.Name & a.Name == albumName) .Project<Album>(projection).FirstOrDefault(); return result; } public void UpdateAlbumAddPhoto(string albumName, Photo photo) { var builder = Builders<Album>.Filter; var filter = builder.Eq(f => f.Name, albumName) & builder.Eq(f => f.Owner, HttpContext.Current.User.Identity.Name); var result = collection.Find(filter).FirstOrDefault(); if (result == null) throw new ArgumentException("No album of supplied name: {0}", albumName); else { var picture = new Photo { PhotoName = photo.PhotoName, PhotoDescription = photo.PhotoDescription, ServerPath = photo.ServerPath, }; var update = Builders<Album>.Update.Push(a => a.Pictures, picture); collection.UpdateOne(filter, update, new UpdateOptions { IsUpsert=true }); } } public void DeletePhotoFromAlbum(string albumName, string photoName) { var builder = Builders<Album>.Filter; var filter = builder.Eq(f => f.Name, albumName) & builder.Eq(f => f.Owner, HttpContext.Current.User.Identity.Name); var result = collection.Find(filter).SingleOrDefault(); if (result == null) throw new ArgumentException("No album of supplied name: {0}", albumName); else { var update = Builders<Album>.Update .PullFilter(a => a.Pictures, Builders<Photo>.Filter.Eq(p => p.PhotoName, photoName)); long count = collection.UpdateOne(filter, update).MatchedCount; } } }public class ServerPathFinder { public string GetBase64ImageString(HttpPostedFileBase file) { string mime = Regex.Match(file.ContentType, @"(?<=image/)\w+").Value; byte[] bytes = new byte[file.ContentLength]; file.InputStream.Read(bytes, 0, file.ContentLength); return string.Format("data:image/{0};base64,{1}",mime, Convert.ToBase64String(bytes)); } }

AlbumController.cs代码如下: 

public class AlbumController : Controller { MongoAlbumPerformer mongod = new MongoAlbumPerformer("test","albums"); [HttpPost] public ActionResult AlbumPreview(Photo model, HttpPostedFileBase file, string albumName, string delete, string phot) { if (delete == "false") { if (file != null) { if (!file.ContentType.StartsWith("image")) { ModelState.AddModelError("file", "选择正确的格式照片！"); } else { ServerPathFinder finder = new ServerPathFinder(); model.ServerPath = finder.GetBase64ImageString(file); } if (ModelState.IsValid) { mongod.UpdateAlbumAddPhoto(albumName, model); ModelState.Clear(); } } } else { mongod.DeletePhotoFromAlbum(albumName, phot); foreach(var error in ModelState.Values) { error.Errors.Clear(); } } ViewBag.AlbumTitle = albumName; ViewBag.PhotoList = mongod.GetPicturesByAlbumName(albumName).Pictures; return View(); } public ActionResult AlbumPreview(string Name) { var album = mongod.GetPicturesByAlbumName(Name); ViewBag.AlbumTitle = Name; ViewBag.PhotoList = album.Pictures; return View(); } [HttpPost] public ActionResult Create(Album model, HttpPostedFileBase file) { if (!file.ContentType.StartsWith("image")) { ModelState.AddModelError("file", "选择正确的格式照片！"); } else { ServerPathFinder finder = new ServerPathFinder(); model.TitlePhoto.ServerPath = finder.GetBase64ImageString(file); } if (ModelState.IsValid) { model.Owner = HttpContext.User.Identity.Name; mongod.CreateAlbum(model); } var albums = mongod.GetAlbumsByUserName(HttpContext.User.Identity.Name); ViewBag.Albums = albums; return View(); } public ActionResult Create() { var albums = mongod.GetAlbumsByUserName(HttpContext.User.Identity.Name); ViewBag.Albums = albums; return View(); } }

部分view视图:
 Create.cshtml 

@{ ViewBag.Title = "Create"; } <h2>我的相册</h2> @Html.Partial("_MyAlbums", (List<Album>)ViewBag.Albums) @using (Html.BeginForm("Create", "Album", FormMethod.Post, new { enctype = "multipart/form-data" })) { @Html.AntiForgeryToken() <div class="form-horizontal"> <h4>创建新相册： </h4> <hr /> @Html.ValidationSummary(true, "", new { @class = "text-danger" }) <div class="form-group"> @Html-l abelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html-l abelFor(model => model.Description, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Description, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Description, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html-l abelFor(model => model.TitlePhoto, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> <input type="file" name="file" style="width: 100%;" data-val="true" data-val-required="要求标题图片."/> @Html.ValidationMessage("file",new { @class = "text-danger" }) </div> </div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="Create" class="btn btn-default" /> </div> </div> </div> } @section scripts{ @Scripts.Render("~/bundles/jqueryval") <script type="text/javascript"> $('img').click(function (data) { }); </script> }AlbumPreview.cshtml @{ ViewBag.Title = "AlbumPreview"; } @using (Html.BeginForm("AlbumPreview", "Album", FormMethod.Post, new { enctype = "multipart/form-data"})) { @Html.AntiForgeryToken() {Html.RenderPartial("_Preview", (List<Photo>)ViewBag.PhotoList);} <div class="form-horizontal"> <br /> <h4>添加新的照片：</h4> <hr /> @Html.ValidationSummary(true, "", new { @class = "text-danger" }) <div class="form-group"> @Html-l abelFor(model => model.PhotoName, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.PhotoName, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.PhotoName, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html-l abelFor(model => model.PhotoDescription, htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.PhotoDescription, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.PhotoDescription, "", new { @class = "text-danger" }) </div> </div> <div class="form-group"> <label class="control-label col-md-2">选择照片：</label> <div class="col-md-10"> <input type="file" name="file" style="width: 100%;" data-val="true" data-val-required="请选择图像" /> @Html.ValidationMessage("file", new { @class = "text-danger" }) </div> </div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="Create" class="btn btn-default" /> </div> </div> </div> <input type="hidden" name="albumName" value="@ViewBag.AlbumTitle" /> <input type="hidden" name="delete" value="false" /> <input type="hidden" name="phot" value="sraka" /> } @section scripts{ @Scripts.Render("~/bundles/jqueryval") <script type="text/javascript"> $(document).ready(function () { var elements = document.getElementsByClassName("btn btn-xs btn-warning cancel"); for (var i = 0, len = elements.length; i < len; i++) { elements[i].addEventListener("click", function () { $('#delete').val(true); var name = $(this).attr("id"); $('#phot').val(name); $('#' + name).click(); }); } }) </script> }_Preview.cshtml @{ ViewBag.Title = "_Preview"; } <h2>Album <span style="color:royalblue;font-style:italic">@ViewBag.AlbumTitle</span></h2> <div class="row"> @foreach (var photo in Model) { <div class="col-md-3"> <input type="submit" value="删除" class="btn btn-xs btn-warning cancel" style="text-align:center;float:right" /> <img src="@photo.ServerPath" class="img-responsive img-thumbnail col-md-3" style="width:100%;height:180px" /> <label style="text-align:center;width:100%">@Html.DisplayNameFor(phot=>phot.PhotoName): @photo.PhotoName</label> <label style="text-align:center;width:100%;font-weight:100">@photo.PhotoDescription</label> </div> } </div>

运行项目结果如图:

首页创建相册:

《车》相册下的图片示例，可以增加图片，删除图片

《QQ》相册下的图片示例

mongodb数据存储结构图:

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

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