怎么样在ASP.NET MVC5网站中添加文章？
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
/// <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
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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