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 Books { get; set; } } 

 public class SearchViewModel { public string Query { get; set; } public IEnumerable<IHit> Results { get; set; } public IDictionary 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); 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); } 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>,long> Find(string query, int page = 0, int pageSize = 10) { var result = Elasticsearch.Elasticsearch.Client.Search(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>, long>(result.Hits,result.ElapsedMilliseconds); } //查找短语建议 public IDictionary FindPhraseSuggestion(string phrase, int page = 0, int pageSize = 5) { var result = Elasticsearch.Elasticsearch.Client.Search(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> FindAll() { var result = Elasticsearch.Elasticsearch.Client.Search(s => s.AllIndices()); return result.Hits; } } 

 @model IEnumerable @{ 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 (va<em style="color:transparent">来源[email protected]搞@^&代*@码网</em>r 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"> </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">  | @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"> </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> 安装Java</li><li> 安装Elasticsearch</li><li>运行Elasticsearch</li><li>增加一些书籍</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) { <strong>@suggestion.Text </strong>  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>  @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); } </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> } 

   <title>@ViewBag.Title</title> @Styles.Render("~/Content/css") @Scripts.Render("~/bundles/modernizr")  <div class="navbar navbar-inverse navbar-fixed-top"> <div class="container"> <div class="navbar-header"> <button type="button" class="navbar-toggle"> <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"> </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)