转自:http://www.cnblogs.com/mzwhj/p/3592895.html
上次把架构做好了,这次做添加文章。添加文章涉及附件的上传管理及富文本编辑器的使用,早添加文章时一并实现。
要点:
- 富文本编辑器采用KindEditor。功能很强大,国人开发,LGPL开源,自己人的好东西没有理由不支持。
- 附件的上传同样基于KindEditor实现,可以上传图片,flash,影音,文件等。
目录
ASP.NET MVC5 网站开发实践 - 概述
ASP.NET MVC5 网站开发实践(一) - 项目框架
ASP.NET MVC5 网站开发实践(一) - 框架(续) 模型、数据存储、业务逻辑
ASP.NET MVC5 网站开发实践(二) - 用户部分(1)用户注册
ASP.NET MVC5 网站开发实践(二) - 用户部分(2)用户登录、注销
ASP.NET MVC5 网站开发实践(二) - 用户部分(3)修改资料、修改密码
ASP.NET MVC5 网站开发实践(二) Member区域 - 文章管理架构
一、添加文章
1、KindEditor富文本编辑器
到官方网站http://kindeditor.net/down.php下载最新版本,解压后把代码复制到项目的Scripts文件夹下。
2、添加界面的显示。
在ArticleController中添加Add 方法
/// <summary>/// 添加文章/// </summary>/// <returns>视图页面</returns>public ActionResult Add(){return View();}
右键添加Article的强类型视图,代码如下
@section scripts{<script type="text/javascript" src="~/Scripts/KindEditor/kindeditor-min.js"></script><script type="text/javascript">//编辑框KindEditor.ready(function (K) {window.editor = K.create('#Content', {height: '500px'
});});</script> }@model Ninesky.Models.Article @using (Html.BeginForm()) { @Html.AntiForgeryToken()<div class="form-horizontal" role="form"><h4>添加文章</h4><hr />@Html.ValidationSummary(true)<div class="form-group"><label class="control-label col-sm-2" for="CommonModel_CategoryID">栏目</label><div class="col-sm-10"><input id="CommonModel_CategoryID" name="CommonModel.CategoryID" data-options="url:'@Url.Action("JsonTree", "Category", new { model="Article" })'" class="easyui-combotree" style="height: 34px; width: 280px;" />@Html.ValidationMessageFor(model => model.CommonModel.CategoryID)</div></div><div class="form-group">@Html.LabelFor(model => model.CommonModel.Title, new { @class = "control-label col-sm-2" })<div class="col-sm-10">@Html.TextBoxFor(model => model.CommonModel.Title, new { @class = "form-control" })@Html.ValidationMessageFor(model => model.CommonModel.Title)</div></div><div class="form-group">@Html.LabelFor(model => model.Author, new { @class = "control-label col-sm-2" })<div class="col-sm-10">@Html.TextBoxFor(model => model.Author, new { @class = "form-control" })@Html.ValidationMessageFor(model => model.Author)</div></div><div class="form-group">@Html.LabelFor(model => model.Source, new { @class = "control-label col-sm-2" })<div class="col-sm-10">@Html.TextBoxFor(model => model.Source, new { @class = "form-control" })@Html.ValidationMessageFor(model => model.Source)</div></div><div class="form-group">@Html.LabelFor(model => model.Intro, new { @class = "control-label col-sm-2" })<div class="col-sm-10">@Html.TextAreaFor(model => model.Intro, new { @class = "form-control" })@Html.ValidationMessageFor(model => model.Intro)</div></div><div class="form-group">@Html.LabelFor(model => model.Content, new { @class = "control-label col-sm-2" })<div class="col-sm-10">@Html.EditorFor(model => model.Content)@Html.ValidationMessageFor(model => model.Content)</div></div><div class="form-group">@Html.LabelFor(model => model.CommonModel.DefaultPicUrl, new { @class = "control-label col-sm-2" })<div class="col-sm-10"><img id="imgpreview" class="thumbnail" src="" />@Html.HiddenFor(model => model.CommonModel.DefaultPicUrl)<a id="btn_picselect" class="easyui-linkbutton">选择…</a>@Html.ValidationMessageFor(model => model.CommonModel.DefaultPicUrl)</div></div><div class="form-group"><div class="col-sm-offset-2 col-sm-10"><input type="submit" value="添加" class="btn btn-default" /></div></div></div> }
效果如图
3、后台接受的处理。
[ValidateInput(false)][HttpPost][ValidateAntiForgeryToken]public ActionResult Add(Article article){if(ModelState.IsValid){//设置固定值article.CommonModel.Hits = 0;article.CommonModel.Inputer = User.Identity.Name;article.CommonModel.Model = "Article";article.CommonModel.ReleaseDate = System.DateTime.Now;article.CommonModel.Status = 99;article = articleService.Add(article);if (article.ArticleID > 0){return View("AddSucess", article);}}return View(article);}
在做架构的时候DAL、BLL的base类里有Add方法,我们可以直接使用ArticleService.Add方法添加到数据库
添加文章功能就实现了,但是不能上传附件,不能选择首页图片,不能删除多余的附件。下面就来实现附件功能。
二、附件上传
目标可以上传附件(图片,文件等),文件保存到上传目录中,且数据库中保存相应记录,可以浏览文件列表,未使用的附件可以删除记录。
一、添加附件
在AttachmentController添加Upload()方法,方法方法把文件写入磁盘中把附件的记录也保存到数据库中,中间会用到读取配置文件,见《.Net MVC 网站中配置文件的读写》。
/// <summary>/// 上传附件/// </summary>/// <returns></returns>public ActionResult Upload(){var _uploadConfig = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~").GetSection("UploadConfig") as Ninesky.Models.Config.UploadConfig;//文件最大限制int _maxSize = _uploadConfig.MaxSize;//保存路径string _savePath;//文件路径string _fileParth = "~/" + _uploadConfig.Path + "/";//文件名string _fileName;//扩展名string _fileExt;//文件类型string _dirName;//允许上传的类型Hashtable extTable = new Hashtable();extTable.Add("image", _uploadConfig.ImageExt);extTable.Add("flash", _uploadConfig.FileExt);extTable.Add("media", _uploadConfig.MediaExt);extTable.Add("file", _uploadConfig.FileExt);//上传的文件HttpPostedFileBase _postFile = Request.Files["imgFile"];if (_postFile == null) return Json(new { error = '1', message = "请选择文件" });_fileName = _postFile.FileName;_fileExt = Path.GetExtension(_fileName).ToLower();//文件类型_dirName = Request.QueryString["dir"];if (string.IsNullOrEmpty(_dirName)){_dirName = "image";}if (!extTable.ContainsKey(_dirName)) return Json(new { error = 1, message = "目录类型不存在" });//文件大小if (_postFile.InputStream == null || _postFile.InputStream.Length > _maxSize) return Json(new { error = 1, message = "文件大小超过限制" });//检查扩展名if (string.IsNullOrEmpty(_fileExt) || Array.IndexOf(((string)extTable[_dirName]).Split(','), _fileExt.Substring(1).ToLower()) == -1) return Json(new { error = 1, message = "不允许上传此类型的文件。 \n只允许" + ((String)extTable[_dirName]) + "格式。" });_fileParth += _dirName + "/" + DateTime.Now.ToString("yyyy-MM") + "/";_savePath = Server.MapPath(_fileParth);//检查上传目录if (!Directory.Exists(_savePath)) Directory.CreateDirectory(_savePath);string _newFileName = DateTime.Now.ToString("yyyyMMdd_hhmmss") + _fileExt;_savePath += _newFileName;_fileParth += _newFileName;//保存文件_postFile.SaveAs(_savePath);//保存数据库记录attachmentService.Add(new Attachment() { Extension = _fileExt.Substring(1), FileParth = _fileParth, Owner = User.Identity.Name, UploadDate = DateTime.Now, Type = _dirName });return Json(new { error = 0, url = Url.Content(_fileParth) });}
二、查询附件列表
打开InterfaceAttachmentService接口,添加两个方法,都进行了注释比较容易理解,直接上代码。
/// <summary>/// 查找附件列表/// </summary>/// <param name="modelID">公共模型ID</param>/// <param name="owner">所有者</param>/// <param name="type">类型</param>/// <returns></returns>IQueryable<Models.Attachment> FindList(Nullable<int> modelID, string owner, string type);/// <summary>/// 查找附件列表/// </summary>/// <param name="modelID">公共模型ID</param>/// <param name="owner">所有者</param>/// <param name="type">所有者</param>/// <param name="withModelIDNull">包含ModelID为Null的</param>/// <returns></returns>IQueryable<Models.Attachment> FindList(int modelID, string owner, string type,bool withModelIDNull);
AttachmentService中写现实代码
public IQueryable<Models.Attachment> FindList(Nullable<int> modelID, string owner, string type){var _attachemts = CurrentRepository.Entities.Where(a => a.ModelID == modelID);if (!string.IsNullOrEmpty(owner)) _attachemts = _attachemts.Where(a => a.Owner == owner);if (!string.IsNullOrEmpty(type)) _attachemts = _attachemts.Where(a => a.Type == type);return _attachemts;}public IQueryable<Models.Attachment> FindList(int modelID, string owner, string type, bool withModelIDNull){var _attachemts = CurrentRepository.Entities;if (withModelIDNull) _attachemts = _attachemts.Where(a => a.ModelID == modelID || a.ModelID == null);else _attachemts = _attachemts.Where(a => a.ModelID == modelID);if (!string.IsNullOrEmpty(owner)) _attachemts = _attachemts.Where(a => a.Owner == owner);if (!string.IsNullOrEmpty(type)) _attachemts = _attachemts.Where(a => a.Type == type);return _attachemts;}
由于KindEditor文件管理需要从服务器获取json格式文件列表,在Ninesky.Web.Areas.Member.Models中单独给列表格式写个视图模型。AttachmentManagerViewModel
namespace Ninesky.Web.Areas.Member.Models {/// <summary>/// KindEditor文件管理中文件视图模型/// <remarks>/// 创建:2014.03.09/// </remarks>/// </summary>public class AttachmentManagerViewModel{public bool is_dir{get;set;}public bool has_file {get;set;}public int filesize {get;set;}public bool is_photo{get;set;}public string filetype{get;set;}public string filename{get;set;}public string datetime { get; set; }} }
在AttachmentController添加返回文件列表的方法FileManagerJson。方法供KindEditor的文件管理器调用
/// <summary>/// 附件管理列表/// </summary>/// <param name="id">公共模型ID</param>/// <param name="dir">目录(类型)</param>/// <returns></returns>public ActionResult FileManagerJson(int? id ,string dir){Models.AttachmentManagerViewModel _attachmentViewModel;IQueryable<Attachment> _attachments;//id为null,表示是公共模型id为null,此时查询数据库中没有跟模型对应起来的附件列表(以上传,但上传的文章……还未保存)if (id == null) _attachments = attachmentService.FindList(null, User.Identity.Name, dir);//id不为null,返回指定模型id和id为null(新上传的)附件了列表else _attachments = attachmentService.FindList((int)id, User.Identity.Name, dir, true);//循环构造AttachmentManagerViewModelvar _attachmentList = new List<Models.AttachmentManagerViewModel>(_attachments.Count());foreach(var _attachment in _attachments){_attachmentViewModel = new Models.AttachmentManagerViewModel() { datetime = _attachment.UploadDate.ToString("yyyy-MM-dd HH:mm:ss"), filetype = _attachment.Extension, has_file = false, is_dir = false, is_photo = _attachment.Type.ToLower() == "image" ? true : false, filename = Url.Content(_attachment.FileParth) };FileInfo _fileInfo = new FileInfo(Server.MapPath(_attachment.FileParth));_attachmentViewModel.filesize = (int)_fileInfo.Length;_attachmentList.Add(_attachmentViewModel);}return Json(new { moveup_dir_path = "", current_dir_path = "", current_url = "", total_count = _attachmentList.Count, file_list = _attachmentList },JsonRequestBehavior.AllowGet);}
3、为图片创建缩略图
把创建缩略图的方法写着Common项目中
在Ninesky.Common的Picture类中添加方法
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Drawing; using System.Drawing.Drawing2D; using System.Security.Cryptography;namespace Ninesky.Common {/// <summary>/// 图片相关/// <remarks>/// 创建:2014.02.11/// </remarks>/// </summary>public class Picture{/// <summary>/// 创建缩略图/// </summary>/// <param name="originalPicture">原图地址</param>/// <param name="thumbnail">缩略图地址</param>/// <param name="width">宽</param>/// <param name="height">高</param>/// <returns>是否成功</returns>public static bool CreateThumbnail(string originalPicture, string thumbnail, int width, int height){//原图Image _original = Image.FromFile(originalPicture);// 原图使用区域RectangleF _originalArea = new RectangleF();//宽高比float _ratio = (float)width/height;if(_ratio > ((float)_original.Width/_original.Height)){_originalArea.X =0;_originalArea.Width = _original.Width;_originalArea.Height = _originalArea.Width / _ratio;_originalArea.Y = (_original.Height - _originalArea.Height) / 2;}else{_originalArea.Y = 0;_originalArea.Height = _original.Height;_originalArea.Width = _originalArea.Height * _ratio;_originalArea.X = (_original.Width - _originalArea.Width) / 2;}Bitmap _bitmap = new Bitmap(width, height);Graphics _graphics = Graphics.FromImage(_bitmap);//设置图片质量_graphics.InterpolationMode = InterpolationMode.High;_graphics.SmoothingMode = SmoothingMode.HighQuality;//绘制图片_graphics.Clear(Color.Transparent);_graphics.DrawImage(_original, new RectangleF(0, 0, _bitmap.Width, _bitmap.Height), _originalArea, GraphicsUnit.Pixel);//保存_bitmap.Save(thumbnail);_graphics.Dispose();_original.Dispose();_bitmap.Dispose();return true;}} }
在AttachmentController添加生成缩略图的action
/// <summary>/// 创建缩略图/// </summary>/// <param name="originalPicture">原图地址</param>/// <returns>缩略图地址。生成失败返回null</returns>public ActionResult CreateThumbnail(string originalPicture){//原图为缩略图直接返回其地址if (originalPicture.IndexOf("_s") > 0) return Json(originalPicture);//缩略图地址string _thumbnail = originalPicture.Insert(originalPicture.LastIndexOf('.'), "_s");//创建缩略图if (Common.Picture.CreateThumbnail(Server.MapPath(originalPicture), Server.MapPath(_thumbnail), 160, 120)){//记录保存在数据库中attachmentService.Add(new Attachment(){ Extension= _thumbnail.Substring(_thumbnail.LastIndexOf('.')+1), FileParth="~"+_thumbnail, Owner= User.Identity.Name, Type="image", UploadDate= DateTime.Now});return Json(_thumbnail);}return Json(null);}
三、整合
添加和上传附件都做好了,现在把他们整合到一起,我们就可以上传附件了。
打开Add视图,在创建KindEditor位置添加脚本
现在打开浏览器就可以上传和管理附件了
添加文章的最后一个字段是文章的默认首页图片,我希望点击选择按钮,可以在已上传中选择图片,并创建缩略图。
那么在Add视图里再弹出一个文件空间让用户选择已上传的文件,用户选择后讲选择的地址发送到服务器创建缩略图,并返回缩略图地址,然后将地址复制给隐藏表单,CommonModel_DefaultPicUrl,同事复制个<img />的src属性用来显示图片。Js代码如下:
//首页图片var editor2 = K.editor({fileManagerJson: '@Url.Action("FileManagerJson", "Attachment")'});K('#btn_picselect').click(function () {editor2.loadPlugin('filemanager', function () {editor2.plugin.filemanagerDialog({viewType: 'VIEW',dirName: 'image',clickFn: function (url, title) {var url;$.ajax({type: "post",url: "@Url.Action("CreateThumbnail", "Attachment")",data: { originalPicture: url },async: false,success: function (data) {if (data == null) alert("生成缩略图失败!");else {K('#CommonModel_DefaultPicUrl').val(data);K('#imgpreview').attr("src", data);}editor2.hideDialog();}});}});});});
看下效果
在保存文章的action中删除未使用的附件
完整的Add方法代码
[ValidateInput(false)][HttpPost][ValidateAntiForgeryToken]public ActionResult Add(Article article){if(ModelState.IsValid){//设置固定值article.CommonModel.Hits = 0;article.CommonModel.Inputer = User.Identity.Name;article.CommonModel.Model = "Article";article.CommonModel.ReleaseDate = System.DateTime.Now;article.CommonModel.Status = 99;article = articleService.Add(article);if (article.ArticleID > 0){//附件处理InterfaceAttachmentService _attachmentService = new AttachmentService();//查询相关附件var _attachments = _attachmentService.FindList(null, User.Identity.Name, string.Empty).ToList();//遍历附件foreach(var _att in _attachments){var _filePath = Url.Content(_att.FileParth);//文章首页图片或内容中使用了该附件则更改ModelID为文章保存后的ModelIDif ((article.CommonModel.DefaultPicUrl != null && article.CommonModel.DefaultPicUrl.IndexOf(_filePath) >= 0) || article.Content.IndexOf(_filePath) > 0){_att.ModelID = article.ModelID;_attachmentService.Update(_att);}//未使用改附件则删除附件和数据库中的记录else{System.IO.File.Delete(Server.MapPath(_att.FileParth));_attachmentService.Delete(_att);}}return View("AddSucess", article);}}return View(article);}
四、总结:
单纯添加文章比较简单,复杂点在上传附件,浏览新添加的附件,删除文章中未使用的附件及生成缩略图上。KindEditor还支持批量上传附件,由于批量上传使用的swfupload,在提交时flash没传输cookie到服务器,无法验证用户导致上传失败,暂时无法使用批量上传。
感谢您的支持与关注!