金巧巧吴启华,拜仁转会,高桥惠美
一、添加文章
1、kindeditor富文本编辑器
到官方网站下载最新版本，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
我要评论
/// <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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