Elasticsearch.Net使用教程 MVC4图书管理系统（2）

本文实例为大家分享了MVC4图书管理系统的制作教程，供大家参考，具体内容如下
首先项目结构图:

Model层的相关代码如下:
Book.cs代码如下:

public class Book{[Key][DatabaseGenerated（DatabaseGeneratedOption.Identity）]public Guid Id { get; set; } [MaxLength（500）] [Display（Name = "标题"）]public string Title { get; set; } [MaxLength（5000）][Display（Name = "前言"）]public string Foreword { get; set; } [Display（Name = "总页数"）]public int Pages { get; set; } [Display（Name = "作者"）]public string Author { get; set; }}

public class AppContext:DbContext{public AppContext（）{}public DbSet<Book> Books { get; set; }}

ViewModels的相关:

public class SearchViewModel{public string Query { get; set; } public IEnumerable<IHit<Book>> Results { get; set; } public IDictionary<string, Suggest[]> Suggestions { get; set; } public long Elapsed { get; set; } }

接下来就HomeController.cs和BooksController.cs的代码:

public class HomeController : Controller{private SearchService _searchService;public HomeController（）{ _searchService = new SearchService（）;}public ActionResult Index（）{return View（）;} public ActionResult Search（string query, int page = 0, int pageSize = 10）{var result = _searchService.Find（query, page, pageSize）; var suggestion = _searchService.FindPhraseSuggestion（query, 0, 3）;var viewModel = new SearchViewModel { Query = query, Results = result.Item1,Elapsed = result.Item2, Suggestions = suggestion }; return View（"Index", viewModel）;} }

public class BooksController : Controller{private AppContext db = new AppContext（）; public ActionResult Index（）{ return View（db.Books.ToList（））;} public ActionResult Details（Guid? id）{ if （id == null） { return new HttpStatusCodeResult（HttpStatusCode.BadRequest）; } Book book = db.Books.Find（id）; if （book == null） { return HttpNotFound（）; } return View（book）;} public ActionResult Create（）{ return View（）;} [HttpPost][ValidateAntiForgeryToken]public ActionResult Create（[Bind（Include="Id,Title,Foreword,Pages,Author"）] Book book）{ if （ModelState.IsValid） { book.Id = Guid.NewGuid（）; db.Books.Add（book）; db.SaveChanges（）;//添加书 Elasticsearch.Elasticsearch.Client.Index<Book>（book）;return RedirectToAction（"Index"）; }return View（book）;} public ActionResult Edit（Guid? id）{ if （id == null） { return new HttpStatusCodeResult（HttpStatusCode.BadRequest）; } Book book = db.Books.Find（id）; if （book == null） { return HttpNotFound（）; } return View（book）;}[HttpPost][ValidateAntiForgeryToken]public ActionResult Edit（[Bind（Include="Id,Title,Foreword,Pages,Author"）] Book book）{ if （ModelState.IsValid） { db.Entry（book）.State = EntityState.Modified; db.SaveChanges（）; return RedirectToAction（"Index"）; } return View（book）;} public ActionResult Delete（Guid? id）{ if （id == null） { return new HttpStatusCodeResult（HttpStatusCode.BadRequest）; } Book book = db.Books.Find（id）; if （book == null） { return HttpNotFound（）; } return View（book）;} [HttpPost, ActionName（"Delete"）][ValidateAntiForgeryToken]public ActionResult DeleteConfirmed（Guid id）{ Book book = db.Books.Find（id）; db.Books.Remove（book）; db.SaveChanges（）; return RedirectToAction（"Index"）;} public JsonResult Reindex（）{ foreach （var book in db.Books） { //Indexing book Elasticsearch.Elasticsearch.Client.Index<Book>（book）; } return Json（"OK",JsonRequestBehavior.AllowGet）;} protected override void Dispose（bool disposing）{ if （disposing） { db.Dispose（）; } base.Dispose（disposing）;}}

Elasticsearch辅助类:
首先是Elasticsearch.cs

public class Elasticsearch{private static ElasticClient _client;public static ElasticClient Client{ get { if （_client == null） {//连接配置var setting = new ConnectionSettings（ElasticsearchConfiguration.Connection,ElasticsearchConfiguration.DefaultIndex）;_client = new ElasticClient（setting）; } return _client; } }}

ElasticsearchConfiguration.cs类

public static class ElasticsearchConfiguration{public static string Host { get { return "http://localhost"; } } public static long Port { get { return 9200; } } public static Uri Connection{ get { return new Uri（string.Format（"{0}:{1}", Host, Port））; }} public static string DefaultIndex{ get { return "library"; }}}

SearchService.cs代码:

public class SearchService{public double MinScore { get {return 0.0005; }} //高亮标记前缀public string PreHighlightTag{ get { return @"<strong>"; }} //高亮标记后缀public string PostHighlightTag{ get { return @"</strong>"; }}public Tuple< IEnumerable<IHit<Book>>,long> Find（string query, int page = 0, int pageSize = 10）{ var result = Elasticsearch.Elasticsearch.Client.Search<Book>（s => s .From（page * pageSize） .Size（pageSize） .MinScore（MinScore） .Highlight（h => h.PreTags（PreHighlightTag）.PostTags（PostHighlightTag）.OnFields（f => f.OnField（b => b.Foreword）,f => f.OnField（b => b.Title））） .Query（q => q.QueryString（qs => qs.Query（query）.UseDisMax（））））;return new Tuple<IEnumerable<IHit<Book>>, long>（result.Hits,result.ElapsedMilliseconds）;} //查找短语建议public IDictionary<string, Suggest[]> FindPhraseSuggestion（string phrase, int page = 0, int pageSize = 5）{ var result = Elasticsearch.Elasticsearch.Client.Search<Book>（s => s .From（page*pageSize） .Size（pageSize） .SuggestPhrase（"did-you-mean", ps => ps.Text（phrase）.OnField（f => f.Foreword）） .Query（q => q.MatchAll（）））; return result.Suggest;}public IEnumerable<IHit<Book>> FindAll（）{ var result = Elasticsearch.Elasticsearch.Client.Search<Book>（s => s.AllIndices（））; return result.Hits;} }

Views视图
Books文件夹下:
Index.cshtml:

@model IEnumerable<Library.Web.Models.Book>@{ViewBag.Title = "Index";Layout = "~/Views/Shared/_Layout.cshtml"; }<h2>Index</h2><p>@Html.ActionLink（"创建新书", "Create"） </p> <table class="table"><tr><th> @Html.DisplayNameFor（model => model.Title）</th><th> @Html.DisplayNameFor（model => model.Foreword）</th><th> @Html.DisplayNameFor（model => model.Pages）</th><th> @Html.DisplayNameFor（model => model.Author）</th><th></th></tr>@foreach （var item in Model） {<tr><td> @Html.DisplayFor（modelItem => item.Title）</td><td> @Html.DisplayFor（modelItem => item.Foreword）</td><td> @Html.DisplayFor（modelItem => item.Pages）</td><td> @Html.DisplayFor（modelItem => item.Author）</td><td> @Html.ActionLink（"编辑", "Edit", new { id=item.Id }） | @Html.ActionLink（"详细", "Details", new { id=item.Id }） | @Html.ActionLink（"删除", "Delete", new { id=item.Id }）</td></tr> }</table>

Edit.cshtml:

@model Library.Web.Models.Book@{ViewBag.Title = "Edit";Layout = "~/Views/Shared/_Layout.cshtml"; }<h2>Edit</h2> @using （Html.BeginForm（）） {@Html.AntiForgeryToken（） <div class="form-horizontal"><h4>Book</h4><hr />@Html.ValidationSummary（true）@Html.HiddenFor（model => model.Id） <div class="form-group"> @Html.LabelFor（model => model.Title, new { @class = "control-label col-md-2" }） <div class="col-md-10"> @Html.EditorFor（model => model.Title） @Html.ValidationMessageFor（model => model.Title） </div></div> <div class="form-group"> @Html.LabelFor（model => model.Foreword, new { @class = "control-label col-md-2" }） <div class="col-md-10"> @Html.TextAreaFor（model => model.Foreword） @Html.ValidationMessageFor（model => model.Foreword） </div></div> <div class="form-group"> @Html.LabelFor（model => model.Pages, new { @class = "control-label col-md-2" }） <div class="col-md-10"> @Html.EditorFor（model => model.Pages） @Html.ValidationMessageFor（model => model.Pages） </div></div> <div class="form-group"> @Html.LabelFor（model => model.Author, new { @class = "control-label col-md-2" }） <div class="col-md-10"> @Html.EditorFor（model => model.Author） @Html.ValidationMessageFor（model => model.Author） </div></div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="Save" class="btn btn-default" /> </div></div></div> }<div>@Html.ActionLink（"返回列表", "Index"） </div>@section Scripts {@Scripts.Render（"~/bundles/jqueryval"） }

Details.cshtml:

@model Library.Web.Models.Book@{ViewBag.Title = "Details";Layout = "~/Views/Shared/_Layout.cshtml"; }<h2>Details</h2><div><h4>Book</h4><hr /><dl class="dl-horizontal"><dt> @Html.DisplayNameFor（model => model.Title）</dt> <dd> @Html.DisplayFor（model => model.Title）</dd> <dt> @Html.DisplayNameFor（model => model.Foreword）</dt> <dd> @Html.DisplayFor（model => model.Foreword）</dd> <dt> @Html.DisplayNameFor（model => model.Pages）</dt> <dd> @Html.DisplayFor（model => model.Pages）</dd> <dt> @Html.DisplayNameFor（model => model.Author）</dt> <dd> @Html.DisplayFor（model => model.Author）</dd> </dl> </div> <p>@Html.ActionLink（"编辑", "Edit", new { id = Model.Id }） |@Html.ActionLink（"返回列表", "Index"） </p>

Delete.cshtml:

@model Library.Web.Models.Book@{ViewBag.Title = "Delete";Layout = "~/Views/Shared/_Layout.cshtml"; }<h2>Delete</h2><h3>Are you sure you want to delete this?</h3> <div><h4>Book</h4><hr /><dl class="dl-horizontal"><dt> @Html.DisplayNameFor（model => model.Title）</dt> <dd> @Html.DisplayFor（model => model.Title）</dd> <dt> @Html.DisplayNameFor（model => model.Foreword）</dt> <dd> @Html.DisplayFor（model => model.Foreword）</dd> <dt> @Html.DisplayNameFor（model => model.Pages）</dt> <dd> @Html.DisplayFor（model => model.Pages）</dd> <dt> @Html.DisplayNameFor（model => model.Author）</dt> <dd> @Html.DisplayFor（model => model.Author）</dd> </dl> @using （Html.BeginForm（）） {@Html.AntiForgeryToken（） <div class="form-actions no-color"> <input type="submit" value="Delete" class="btn btn-default" /> | @Html.ActionLink（"返回列表", "Index"）</div>} </div>

Create.cshtml：

@model Library.Web.Models.Book@{ViewBag.Title = "Create";Layout = "~/Views/Shared/_Layout.cshtml"; }<h2>创建</h2> @using （Html.BeginForm（）） {@Html.AntiForgeryToken（） <div class="form-horizontal"><h4>Book</h4><hr />@Html.ValidationSummary（true） <div class="form-group"> @Html.LabelFor（model => model.Title, new { @class = "control-label col-md-2" }） <div class="col-md-10"> @Html.EditorFor（model => model.Title） @Html.ValidationMessageFor（model => model.Title） </div></div> <div class="form-group"> @Html.LabelFor（model => model.Foreword, new { @class = "control-label col-md-2" }） <div class="col-md-10"> @Html.TextAreaFor（model => model.Foreword） @Html.ValidationMessageFor（model => model.Foreword） </div></div> <div class="form-group"> @Html.LabelFor（model => model.Pages, new { @class = "control-label col-md-2" }） <div class="col-md-10"> @Html.EditorFor（model => model.Pages） @Html.ValidationMessageFor（model => model.Pages） </div></div> <div class="form-group"> @Html.LabelFor（model => model.Author, new { @class = "control-label col-md-2" }） <div class="col-md-10"> @Html.EditorFor（model => model.Author） @Html.ValidationMessageFor（model => model.Author） </div></div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="submit" value="创建" class="btn btn-default" /> </div></div></div> }<div>@Html.ActionLink（"回到列表", "Index"） </div>@section Scripts {@Scripts.Render（"~/bundles/jqueryval"） }

Home->Index.cshtml

@model Library.Web.ViewModels.SearchViewModel @{ViewBag.Title = "Elasticsearch"; }<div class="jumbotron"><h1>Elasticsearch入门</h1><p class="lead">安装和配置群集</p><ol><li> <a href="http://www.oracle.com/technetwork/java/ javase/downloads/index.html">安装Java</a></li><li> <a href="http://www.elasticsearch.org/ download/">安装Elasticsearch</a></li><li>运行Elasticsearch</li><li><a href="/Books/Create">增加一些书籍</a></li></ol> </div> @if （Model == null） {return; } <div style="margin-top: 30px;">@if （Model.Suggestions.Any（x => x.Key == "did-you-mean"））{<span>你的意思是: </span>foreach （var suggestions in Model.Suggestions["did-you-mean"]）{ var count = 0; foreach （var suggestion in suggestions.Options） { <a href="/Home/Search?query=@suggestion.Text"><strong>@suggestion.Text </strong> </a> count++; } if （count == 0） { <span class="alert-danger">没有建议！</span> } }} </div><h3><strong>Results for:</strong> @Model.Query</h3>@if （Model ！= null） {<table class="table table-condensed"><thead> <tr><th>文档的分数（排名相关度）</th><th>Title</th><th>Content</th><th>Author</th></tr></thead> <tbody> @foreach （var result in Model.Results） { <tr><td>@result.Score</td><td><a href="/Books/Details/@result.Id"> @if （result.Highlights ！= null && result.Highlights.Any（x => x.Key == "title"）） { var hl = result.Highlights.FirstOrDefault（x => x.Key == "title"）; foreach （var h in hl.Value.Highlights） {WriteLiteral（h）; } } else { WriteLiteral（result.Source.Title）; }</a></td> <td>@if （result.Highlights ！= null && result.Highlights.Any（x => x.Key == "foreword"））{ var hl = result.Highlights.FirstOrDefault（x => x.Key == "foreword"）; foreach （var h in hl.Value.Highlights） { WriteLiteral（h + "..."）; }} </td> <td>@result.Source.Author</td> </tr>} @if （！Model.Results.Any（）） { <tr><td colspan="4" class="alert alert-danger" style="text-align:center;">没有结果发现:（</td> </tr> }</tbody> </table><h4><span class="label label-default">@Model.Results.Count（）</span>搜索结果用了 @Model.Elapsed 毫秒</h4> }

_Layout.cshtml

<！DOCTYPE html> <html> <head><meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>@ViewBag.Title</title>@Styles.Render（"~/Content/css"）@Scripts.Render（"~/bundles/modernizr"）</head> <body><div class="navbar navbar-inverse navbar-fixed-top"><div class="container"> <div class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span> </button> @Html.ActionLink（"Elasticsearch MVC示例", "Index", "Home", null, new { @class = "navbar-brand" }） </div> <div class="navbar-collapse collapse"> <ul class="nav navbar-nav"><li>@Html.ActionLink（"Home", "Index", "Home"）</li><li>@Html.ActionLink（"Books", "Index", "Books"）</li> </ul> @using （Html.BeginForm（"Search", "Home", FormMethod.Get,new {@class = "navbar-form navbar-left"}）） {<div class="form-group"><input class="form-control" type="text" placeholder="搜索" name="query" /></div><button type="submit" class="btn btn-default">提交</button> }</div> </div></div><div class="container body-content">@RenderBody（）<hr /><footer> <p>© @DateTime.Now.Year - Elasticsearch, Nest, ASP.NET 应用</p></footer></div> @Scripts.Render（"~/bundles/jquery"）@Scripts.Render（"~/bundles/bootstrap"）@RenderSection（"scripts", required: false） </body> </html>

结果如图:

列表页

创建页:

搜索结果页:

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。