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>&#8195;</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>&copy; @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中文源码网。