Elasticsearch.Net使用教程 MVC4图书管理系统（2）

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; }  } 

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; }   } 

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);  }  } 

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;   }   }  } 

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"; }  }  } 

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;  }   } 

@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> 

@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") } 

@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> 

@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> 

@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") } 

@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> } 

<!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>