mvc5+ef+ adminlte教程17：mvc5 用正则表达式获取字段中的图片地址取出来形成列表
今日头条那样，上面是文章下面是图很好漂亮。
所以我思考半天，准备将CmsContents表再增加一个字段，前台的Ueditor送过去的字段内容，进行处理，将其图片地址用正则表达式取出来存入另一个字段。
然后前台直接LIst<>这个字段进行图片的展示。
下一步还可以考虑将图片生成浓缩图。
1.先增加一个字段。进行first code.
public string Piclist { get; set; }
2.控制器，对model.Contetnts字段进行遍历，对所有的图片地址写入字段piclist,同时用","分隔。
// POST: CmsContents/Create
// 为了防止“过多发布”攻击，请启用要绑定到的特定属性，有关
// 详细信息，请参阅 https://go.microsoft.com/fwlink/?LinkId=317598。
[HttpPost]
[ValidateAntiForgeryToken]
[ValidateInput(false)]
public async Task<ActionResult> Create([Bind(Include = "ColumnId,Title,Contents,CmsPermission")] CmsContent cmsContent, FormCollection form)
{
var dt = DateTime.Now;
string str = dt.ToString("yyyyMMddHHmmss");
cmsContent.Id = str;
cmsContent.PcIp = Request.UserHostAddress;
cmsContent.CreatUser = Session["username"].ToString();
cmsContent.ReplyCount =0;
cmsContent.CreatTime = DateTime.Now;
cmsContent.yulou1 = Session["headerPic"].ToString();
var winnars = from x in form.AllKeys ///选择所有的传进来的form
//var winnars = from x in form["selectRole"]
where form[x] != "false"
select x;
string Lstring = "";
//foreach (var id in winnars)
foreach(var id in winnars)
{
if (id != "Contents" && id != "ColumnId" && id != "Title" && id != "Id" && id != "ReplyCount" && id != "CreatUser" && !id.Contains("RequestVerificationToken"))
{
Lstring = Lstring + id + ",";
}
}
cmsContent.CmsPermission = Lstring;
///用正则表达式获取Ueditor中送过来的Contents字段中的图片列表。
Regex m_hvtRegImg = new Regex(@"<img\b[^<>]*?\bsrc[\s\t\r\n]*=[\s\t\r\n]*[""']?[\s\t\r\n]*(?<imgUrl>[^\s\t\r\n""'<>]*)[^<>]*?/?[\s\t\r\n]*>", RegexOptions.IgnoreCase);
String yyyy = cmsContent.Contents;
// 搜索匹配的字符串
MatchCollection matches = m_hvtRegImg.Matches(yyyy);
int m_i = 0;
string[] sUrlList = new string[matches.Count];
// 取得匹配项列表
foreach (Match match in matches)
{
sUrlList[m_i++] = match.Groups["imgUrl"].Value;
}
cmsContent.Piclist = string.Join(",",sUrlList);
//END 获取图片地址
if (ModelState.IsValid)
{
db.CmsContents.Add(cmsContent);
await db.SaveChangesAsync();
return RedirectToAction("Admin","User");
}
return View(cmsContent);
}
3.前台，用Model.PicList进行.split(',')
<table class="table table-hover" style="table-layout:fixed">
<tr>
<th width="80%"></th>
<th></th>
</tr>
@foreach (var item in Model)
{
<tr>
<td style="overflow:hidden;white-space:nowrap;text-overflow:ellipsis;">
<a href="~/CmsContents/Details?id=@item.Id"> @Html.DisplayFor(modelItem => item.Title)</a>
<br />
@{
if (item.Piclist != null)
{
string[] picList = item.Piclist.Split(',');
for (var a = 0; a < picList.Length; a++)
{
<img src= @picList[a] width="145" height="95" />
}
}
}
</td>
<td>
@Html.DisplayFor(modelItem => item.CreatTime, "DateTimeTemplate")
</td>
</tr>
}
</table>
4.效果。
余下的就是美化了。
先保存一下，再上修改完后的代码。
下面完整的视图
@*@model IEnumerable<jsdhh2.Models.CmsContent>*@
@model PagedList.IPagedList<jsdhh2.Models.CmsContent>
@using PagedList.Mvc;
<link href="~/Content/PagedList.css" rel="stylesheet" />
@{
ViewBag.Title = "Index";
}
<div class="dhhheight1 col-md-12 col-xs-12"></div>
<!--start 左 -->
<div class="col-md-3">
@using (Html.BeginForm("indexList", "CmsContents", new { @class = "form-inline" }, FormMethod.Post))
{ <div class="dhhheight1 col-md-12 col-xs-12">.</div>
<div class="form-inline dhhbootom">
<div class="form-group">
<div class="input-group col-md-12">
@Html.TextBox("SearchString", "", new { @class = "form-control", @Style = "display:inline" })
<span class="input-group-btn ">
<input id="btnSearch" class="btn btn btn-primary" type="submit" value="搜索">
</span>
</div>
</div>
</div>
}
.
<div class="box box-solid">
<div class="box-header with-border">
<h3 class="box-title">文章中心</h3>
<div class="box-tools">
<button type="button" class="btn btn-box-tool" data-widget="collapse">
<i class="fa fa-minus"></i>
</button>
</div>
</div>
<div class="box-body no-padding" style="display: block;">
<ul class="nav nav-pills nav-stacked">
@foreach (jsdhh2.Models.CmsColumn data1 in (ViewBag.drolistmenu as IEnumerable<jsdhh2.Models.CmsColumn>
))
{
<li>
<a href="~/CmsContents/IndexList?SeachColumnString=@data1.Id"><i class="fa fa-circle-o"></i> @data1.Name</a>
</li>
}
</ul>
</div>
<!-- /.box-body -->
</div>
</div>
<!--start 右 -->
<div class="col-md-9 col-xs-12 pull-right">
<!-- Content Header (Page header) -->
<section class="content-header">
<h1>
文章列表
<small>文章千万篇，我只取三千~</small>
</h1>
<ol class="breadcrumb">
<li><a href="#"><i class="fa fa-dashboard"></i> Level</a></li>
<li class="active">Here</li>
</ol>
</section>
<!--end Content Header (Page header) -->
<!-- Main content -->
<section class="content">
<table class="table table-hover" style="table-layout:fixed">
<tr>
<th width="80%"></th>
<th></th>
</tr>
@foreach (var item in Model)
{
<tr>
<td style="overflow:hidden;white-space:nowrap;text-overflow:ellipsis;">
<div class="dhhlisttile"> <a href="~/CmsContents/Details?id=@item.Id"> @Html.DisplayFor(modelItem => item.Title) </a></div>
@{
if (item.Piclist != null)
{
string[] picList = item.Piclist.Split(',');
for (var a = 0; a < picList.Length; a++)
{
<img src= @picList[a] width="145" height="95" style="margin-right:9px;" />
}
}
}
<div style="line-height:30px; color:#c3c2c2;">by @item.CreatUser 于 @Html.DisplayFor(modelItem => item.CreatTime, "DateTimeTemplate")</div>
</td>
</tr>
}
</table>
<!-- /.box -->
<!-- Main content -->
Page @(Model.PageCount < Model.PageNumber ? 0 : Model.PageNumber) of @Model.PageCount
@Html.PagedListPager(Model, page => Url.Action("IndexList",
new { page, SeachColumnString = ViewBag.SeachColumnString, SearchString = ViewBag.SearchString }))
</section>
</div>
@section Scripts {
<script type="text/JavaScript">
function GetImgUrl(imgstr) {
var r = /<img[^>]+?src=(/"|/')([^/'/"]+)/1/i;
alert(imgstr.match(r)[2]);
}
</script>
}
然后更改了jsdhh.css中的几个CSS
.dhhlisttile {
font-size: 24px;
line-height: 42px;
}
.dhhlisttile a{
color:#000000;
}
效果
