Elasticsearch.Net使用教程 MVC4图书管理系统（2）

作者：夏晶阳--艺术 | 2022-01-13 06:54

这篇文章主要介绍了Elasticsearch.Net使用教程教会大家利用MVC4制作图书管理系统,具有一定的参考价值，感兴趣的小伙伴们可以参考一下

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 Books { get; set; } 
 }

ViewModels的相关:

public class SearchViewModel 
 { 
 public string Query { get; set; } 
 
 public IEnumerable> Results { get; set; } 
 
 public IDictionary 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); 
 
 
 
  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); 
 } 
 }

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 @""; } 
 } 
 
 //高亮标记后缀 
 public string PostHighlightTag 
 { 
  get { return @""; } 
 } 
 
 
 public Tuple< IEnumerable>,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>, 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> FindAll() 
 { 
  var result = Elasticsearch.Elasticsearch.Client.Search(s => s.AllIndices()); 
  return result.Hits; 
 } 
 
 }

Views视图
Books文件夹下:
Index.cshtml:

@model IEnumerable 
 
@{ 
 ViewBag.Title = "Index"; 
 Layout = "~/Views/Shared/_Layout.cshtml"; 
} 
 
Index 
 
 
 @Html.ActionLink("创建新书", "Create") 
 
 
 
@foreach (var item in Model) { 
  
} 
 
 
  
  
  @Html.DisplayNameFor(model => model.Title) 
  
  
  @Html.DisplayNameFor(model => model.Foreword) 
  
  
  @Html.DisplayNameFor(model => model.Pages) 
  
  
  @Html.DisplayNameFor(model => model.Author) 
  
  
 
 
  
  @Html.DisplayFor(modelItem => item.Title) 
  
  
  @Html.DisplayFor(modelItem => item.Foreword) 
  
  
  @Html.DisplayFor(modelItem => item.Pages) 
  
  
  @Html.DisplayFor(modelItem => item.Author) 
  
  
  @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 })

@Html.DisplayNameFor(model => model.Title)	@Html.DisplayNameFor(model => model.Foreword)	@Html.DisplayNameFor(model => model.Pages)	@Html.DisplayNameFor(model => model.Author)
@Html.DisplayFor(modelItem => item.Title)	@Html.DisplayFor(modelItem => item.Foreword)	@Html.DisplayFor(modelItem => item.Pages)	@Html.DisplayFor(modelItem => item.Author)	@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 })

Edit.cshtml:

@model Library.Web.Models.Book 
 
@{ 
 ViewBag.Title = "Edit"; 
 Layout = "~/Views/Shared/_Layout.cshtml"; 
} 
 
Edit 
 
 
@using (Html.BeginForm()) 
{ 
 @Html.AntiForgeryToken() 
 
  
 Book 
  
 @Html.ValidationSummary(true) 
 @Html.HiddenFor(model => model.Id) 
 
  
  @Html.LabelFor(model => model.Title, new { @class = "control-label col-md-2" }) 
   
  @Html.EditorFor(model => model.Title) 
  @Html.ValidationMessageFor(model => model.Title) 
   
  
 
  
  @Html.LabelFor(model => model.Foreword, new { @class = "control-label col-md-2" }) 
   
  @Html.TextAreaFor(model => model.Foreword) 
  @Html.ValidationMessageFor(model => model.Foreword) 
   
  
 
  
  @Html.LabelFor(model => model.Pages, new { @class = "control-label col-md-2" }) 
   
  @Html.EditorFor(model => model.Pages) 
  @Html.ValidationMessageFor(model => model.Pages) 
   
  
 
  
  @Html.LabelFor(model => model.Author, new { @class = "control-label col-md-2" }) 
   
  @Html.EditorFor(model => model.Author) 
  @Html.ValidationMessageFor(model => model.Author) 
   
  
 
  
   
   
   
  
  
} 
 
 
 @Html.ActionLink("返回列表", "Index") 
 
 
@section Scripts { 
 @Scripts.Render("~/bundles/jqueryval") 
}

Details.cshtml:

@model Library.Web.Models.Book 
 
@{ 
 ViewBag.Title = "Details"; 
 Layout = "~/Views/Shared/_Layout.cshtml"; 
} 
 
Details 
 
 
 Book 
  
  
  
  @Html.DisplayNameFor(model => model.Title) 
  
 
  
  @Html.DisplayFor(model => model.Title) 
  
 
  
  @Html.DisplayNameFor(model => model.Foreword) 
  
 
  
  @Html.DisplayFor(model => model.Foreword) 
  
 
  
  @Html.DisplayNameFor(model => model.Pages) 
  
 
  
  @Html.DisplayFor(model => model.Pages) 
  
 
  
  @Html.DisplayNameFor(model => model.Author) 
  
 
  
  @Html.DisplayFor(model => model.Author) 
  
 
  
 
 
 @Html.ActionLink("编辑", "Edit", new { id = Model.Id }) | 
 @Html.ActionLink("返回列表", "Index")

Delete.cshtml:

@model Library.Web.Models.Book 
 
@{ 
 ViewBag.Title = "Delete"; 
 Layout = "~/Views/Shared/_Layout.cshtml"; 
} 
 
Delete 
 
Are you sure you want to delete this? 
 
 Book 
  
  
  
  @Html.DisplayNameFor(model => model.Title) 
  
 
  
  @Html.DisplayFor(model => model.Title) 
  
 
  
  @Html.DisplayNameFor(model => model.Foreword) 
  
 
  
  @Html.DisplayFor(model => model.Foreword) 
  
 
  
  @Html.DisplayNameFor(model => model.Pages) 
  
 
  
  @Html.DisplayFor(model => model.Pages) 
  
 
  
  @Html.DisplayNameFor(model => model.Author) 
  
 
  
  @Html.DisplayFor(model => model.Author) 
  
 
  
 
 @using (Html.BeginForm()) { 
 @Html.AntiForgeryToken() 
 
  
   | 
  @Html.ActionLink("返回列表", "Index") 
  
 }

Create.cshtml：

@model Library.Web.Models.Book 
 
@{ 
 ViewBag.Title = "Create"; 
 Layout = "~/Views/Shared/_Layout.cshtml"; 
} 
 
创建 
 
 
@using (Html.BeginForm()) 
{ 
 @Html.AntiForgeryToken() 
 
  
 Book 
  
 @Html.ValidationSummary(true) 
 
  
  @Html.LabelFor(model => model.Title, new { @class = "control-label col-md-2" }) 
   
  @Html.EditorFor(model => model.Title) 
  @Html.ValidationMessageFor(model => model.Title) 
   
  
 
  
  @Html.LabelFor(model => model.Foreword, new { @class = "control-label col-md-2" }) 
   
  @Html.TextAreaFor(model => model.Foreword) 
  @Html.ValidationMessageFor(model => model.Foreword) 
   
  
 
  
  @Html.LabelFor(model => model.Pages, new { @class = "control-label col-md-2" }) 
   
  @Html.EditorFor(model => model.Pages) 
  @Html.ValidationMessageFor(model => model.Pages) 
   
  
 
  
  @Html.LabelFor(model => model.Author, new { @class = "control-label col-md-2" }) 
   
  @Html.EditorFor(model => model.Author) 
  @Html.ValidationMessageFor(model => model.Author) 
   
  
 
  
   
   
   
  
  
} 
 
 
 @Html.ActionLink("回到列表", "Index") 
 
 
@section Scripts { 
 @Scripts.Render("~/bundles/jqueryval") 
}

Home->Index.cshtml

@model Library.Web.ViewModels.SearchViewModel 
@{ 
 ViewBag.Title = "Elasticsearch"; 
} 
 
 
 Elasticsearch入门 
 安装和配置群集 
  
  
  安装Java 
  
  
  安装Elasticsearch 
  
 运行Elasticsearch 
 增加一些书籍 
  
 
 
 
@if (Model == null) 
{ 
 return; 
} 
 
 @if (Model.Suggestions.Any(x => x.Key == "did-you-mean")) 
 { 
 你的意思是:  
 foreach (var suggestions in Model.Suggestions["did-you-mean"]) 
 { 
  var count = 0; 
  foreach (var suggestion in suggestions.Options) 
  { 
  @suggestion.Text   
  count++; 
  } 
  if (count == 0) 
  { 
  没有建议！ 
  } 
 
 } 
 } 
 
 
Results for: @Model.Query 
 
@if (Model != null) 
{ 
  
  @foreach (var result in Model.Results) 
  { 
   
 
  } 
  @if (!Model.Results.Any()) 
  { 
   
  } 
  
  
  文档的分数(排名相关度) Title Content Author 
  
 
  
   @result.Score 
    
    
    @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); 
    } 
    
    
 
    
   @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 + "..."); 
    } 
   } 
 
    
 
   @result.Source.Author 
  
 
   没有结果发现:( 
   
 
  
 @Model.Results.Count()搜索结果用了 @Model.Elapsed 毫秒 
}

文档的分数(排名相关度)	Title	Content	Author
@result.Score	@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); }	@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 + "..."); } }	@result.Source.Author
没有结果发现:(

_Layout.cshtml

 
 
 
  
  
 @ViewBag.Title 
 @Styles.Render("~/Content/css") 
 @Scripts.Render("~/bundles/modernizr") 
 
 
 
  
  
   
   
  @Html.ActionLink("Elasticsearch MVC示例", "Index", "Home", null, new { @class = "navbar-brand" }) 
   
   
   
   @Html.ActionLink("Home", "Index", "Home") 
   @Html.ActionLink("Books", "Index", "Books") 
   
 
 
  @using (Html.BeginForm("Search", "Home", FormMethod.Get,new {@class = "navbar-form navbar-left"})) 
  { 
    
    
    
    
  } 
 
 
 
   
 
  
  
  
 @RenderBody() 
  
  
  © @DateTime.Now.Year - Elasticsearch, Nest, ASP.NET 应用 
  
  
 
 @Scripts.Render("~/bundles/jquery") 
 @Scripts.Render("~/bundles/bootstrap") 
 @RenderSection("scripts", required: false)

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。

推荐阅读

程序员
Android自定义属性未显示

如何解决《Android自定义属性未显示》经验，为你挑选了1个好方法。 ... [详细]
程序员
如何在CakePHP 3中的model-> save()上获取SQL查询？

如何解决《如何在CakePHP3中的model->save()上获取SQL查询？》经验，为你挑选了0个好方法。 ... [详细]
程序员
允许管理员用户查看其他用户类型可以查看/执行的操作？

如何解决《允许管理员用户查看其他用户类型可以查看/执行的操作？》经验，为你挑选了1个好方法。 ... [详细]
程序员
将对象列表保存到文本文件

如何解决《将对象列表保存到文本文件》经验，为你挑选了1个好方法。 ... [详细]
程序员
GNU malloc_info():获得真正分配的内存？

如何解决《GNUmalloc_info():获得真正分配的内存？》经验，为你挑选了0个好方法。 ... [详细]
程序员
在正则表达式拆分期间发生javascript未定义元素

如何解决《在正则表达式拆分期间发生javascript未定义元素》经验，为你挑选了1个好方法。 ... [详细]
程序员
从数组中选择奇数或偶数元素

如何解决《从数组中选择奇数或偶数元素》经验，为你挑选了1个好方法。 ... [详细]
程序员
缺少Type.GetMember和MemberInfo.GetCustomAttributes（C＃PCL .NET 4.6）

如何解决《缺少Type.GetMember和MemberInfo.GetCustomAttributes（C＃PCL.NET4.6）》经验，为你挑选了1个好方法。 ... [详细]
程序员
转储Postgres DB，时间和.sql文件的权重

如何解决《转储PostgresDB，时间和.sql文件的权重》经验，为你挑选了1个好方法。 ... [详细]
程序员
如何直接写入模仿scalar_summary的摘要？

如何解决《如何直接写入模仿scalar_summary的摘要？》经验，为你挑选了2个好方法。 ... [详细]
程序员
更改左侧的ToolBar默认图标

如何解决《更改左侧的ToolBar默认图标》经验，为你挑选了1个好方法。 ... [详细]
程序员
BufferedWriter类的writeLine方法

如何解决《BufferedWriter类的writeLine方法》经验，为你挑选了1个好方法。 ... [详细]
程序员
部分索引的局限性是什么？

如何解决《部分索引的局限性是什么？》经验，为你挑选了1个好方法。 ... [详细]
程序员
我怎样才能简单地添加一个Spring Data REST实体的链接

如何解决《我怎样才能简单地添加一个SpringDataREST实体的链接》经验，为你挑选了1个好方法。 ... [详细]
程序员
为什么这个函数返回NaN？

如何解决《为什么这个函数返回NaN？》经验，为你挑选了0个好方法。 ... [详细]
程序员
由于约束错误,无法在C#中实现VB接口

如何解决《由于约束错误,无法在C#中实现VB接口》经验，为你挑选了1个好方法。 ... [详细]
程序员
从SPARK中的另一个RDD返回最大N值的RDD

如何解决《从SPARK中的另一个RDD返回最大N值的RDD》经验，为你挑选了1个好方法。 ... [详细]
程序员
Try-catch创建无限循环

如何解决《Try-catch创建无限循环》经验，为你挑选了1个好方法。 ... [详细]
程序员
E_UNEXPECTED UWP灾难性失败

如何解决《E_UNEXPECTEDUWP灾难性失败》经验，为你挑选了0个好方法。 ... [详细]
程序员
如何识别向量中一系列NA的索引

如何解决《如何识别向量中一系列NA的索引》经验，为你挑选了1个好方法。 ... [详细]

夏晶阳--艺术

这个屌丝很懒，什么也没留下！

关注作者

Tags | 热门标签

RankList | 热门文章