ASP.NET MVC5网站开发添加文章
时间：2023-05-27 17:24:01 | 来源：网站运营
时间：2023-05-27 17:24:01 来源：网站运营
ASP.NET MVC5网站开发添加文章：
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
| 12345678 | /// <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
| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283 | @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。
| 123456789101112131415161718192021 | [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》。
| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354 | /// <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。
| 1234567891011121314151617 | /// <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
| 1234567891011121314151617 | 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
| 12345678910111213141516171819 | 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
| 12345678910111213141516171819202122232425 | /// <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AttachmentManagerViewModel var _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
| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566 | 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
| 1234567891011121314151617181920 | /// <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：
| 1234567891011121314151617181920212223242526272829 | //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
| 123456789101112131415161718192021222324252627282930313233343536373839404142 | [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ModelID if ((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); } |
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，希望这篇文章可以对大家的学习有所帮助，大家可以结合小编之前发的文章进行学习，相信一定会有所收获。
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