这篇文章主要介绍了Elasticsearch.Net如何实现MVC4图书管理系统，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
首先项目结构图:
Model层的相关代码如下:
Book.cs代码如下:
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重庆分公司
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:
