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我的第一个FluentNHibernate例子

刚刚接触NHibernate和FluentNHibernate，所以最好的方法是从一个简单的例子入手。

开发环境考虑到是实际情况还有好多朋友没有用VS2015，就用VS2013withUpdate5吧。

1.创建Asp.net Web应用程序(MVC),叫FluentNHibernateDemo1

选择Empty,MVC

2.管理NuGet程序包

添加FluentNHibernate,2.0.3.0

添加bootstrap

添加jquery.validate.unobtrusive

添加JQuery validation with bootstrap

3.添加Model

public class Item
{
    [Key]
    public virtual int Id { get; set; }
    [Display(Name = "姓名")]
    [Required(ErrorMessage = "姓名必须")]
    public virtual string Name { get; set; }
    [Display(Name = "年龄")]
    [Required(ErrorMessage = "年龄必须")]
    public virtual int Age { get; set; }
    [Display(Name = "描述")]
    public virtual string Description { get; set; }
}

4.添加Map，注意这里使用C#完成映射

public class ItemMap:ClassMap<Item>
{
    public ItemMap()
    {
        Table("Item");
        Id(m => m.Id).GeneratedBy.Native();
        Map(m => m.Name).Length(50).Not.Nullable();
        Map(m => m.Age).Not.Nullable();
        Map(m => m.Description).Length(500);
    }
}

5.添加NHibernate help类

public class NHibernateHelper
{
    private const string exportFilePath = @"c:abc.sql";
    public static ISessionFactory CreateSessionFactory()
    {
        return Fluently.Configure()
   .Database(MsSqlConfiguration
   .MsSql2008
   .ConnectionString(c => c.FromConnectionStringWithKey("DefaultConnection")))
   .Mappings(m => m.FluentMappings
   .AddFromAssemblyOf<ItemMap>()).ExposeConfiguration(CreateSchema)
   .BuildSessionFactory();
    }
    private static void CreateSchema(Configuration cfg)
    {
        var schemaExport = new SchemaExport(cfg);
        var str = cfg.Properties["connection.connection_string"].ToString();
        bool isNew = isNewDb(str);
        if (isNew)
        {
            if (System.IO.File.Exists(exportFilePath))
                System.IO.File.Delete(exportFilePath);
            schemaExport.SetOutputFile(exportFilePath);
        }
        schemaExport.Create(false, isNew);
    }

    private static bool isNewDb(string connectString)
    {
        bool isNew = false;
        try
        {
            using (SqlConnection conn = new SqlConnection(connectString))
            {
                conn.Open();
                string sql = "select * FROM Item";
                SqlCommand cmd = new SqlCommand(sql, conn);
                cmd.ExecuteReader(CommandBehavior.CloseConnection);
            }

        }
        catch
        {
            isNew = true;
        }
        return isNew;
    }
}

这里要解释一下：

ConnectionString(c => c.FromConnectionStringWithKey("DefaultConnection")))

是指在web.config中配置在web.config

<connectionStrings>
  <add name="DefaultConnection" connectionString="Data Source=(LocalDb)v11.0;AttachDbFilename=|DataDirectory|Demo.mdf;Initial Catalog=test;Integrated Security=True"
     providerName="System.Data.SqlClient" />
</connectionStrings>

我采用的是Vs2013自带的localdb,数据库名为Demo.mdf,所以我先要建一个空的数据库(Demo.mdf)，至于表，我会用CodeFirst生成。

bool isNew = isNewDb(str);
schemaExport.Create(false, isNew);

原因是当数据库为空是我们要用schemaExport.Create(false, true);

这时会生成数据库

当数据库存在表时，我们要用schemaExport.Create(false, false);

如果是schemaExport.Create(false, true);会出现无法新增数据的情况

6.新建Home Controller

Controller 代码:

public class HomeController : Controller
{
    public ActionResult Create()
    {
        return View();
    }
    public ActionResult Edit(int id)
    {
        var factory = NHibernateHelper.CreateSessionFactory();
        using (var session = factory.OpenSession())
        {
            IList<Item> items = session.CreateCriteria(typeof(Item))
                    .Add(Restrictions.Eq("Id", id))
                    .List<Item>();
            var result = items.Count > 0 ? items[0] : null;
            return View(result);
        }
    }
    [HttpPost]
    public ActionResult Edit(Item item)
    {
        if (ModelState.IsValid)
        {
            var factory = NHibernateHelper.CreateSessionFactory();
            using (var session = factory.OpenSession())
            {

                session.Update(item, item.Id);
                session.Flush();
            }
        }
        return RedirectToAction("Index");
    }
    public ActionResult DeleteConfirm(int id)
    {
        var factory = NHibernateHelper.CreateSessionFactory();
        using (var session = factory.OpenSession())
        {
            //  IList<Item> items = session.CreateCriteria(typeof(Item))
            //          .Add(Restrictions.Eq("Id", id))
            //          .List<Item>();
            //  var result = items.Count > 0 ? items[0] : null;
            //  if (result != null)
            //      session.Delete(result);
            session.Delete("From Item where Id=" + id);
            session.Flush();
            return RedirectToAction("Index");
        }
    }
    public ActionResult Delete(int id)
    {
        var factory = NHibernateHelper.CreateSessionFactory();
        using (var session = factory.OpenSession())
        {
            var result = session.Get<Item>(id);
            return View(result);
        }
    }

    [HttpPost]
    public ActionResult Create(Item item)
    {
        if (ModelState.IsValid)
        {
            var factory = NHibernateHelper.CreateSessionFactory();
            using (var session = factory.OpenSession())
            {

                session.Save(item);
                session.Flush();
            }
        }
        return RedirectToAction("Index");
    }
    // GET: Home
    public ActionResult Index()
    {
        var factory = NHibernateHelper.CreateSessionFactory();
        IEnumerable<Item> items;
        using (var session = factory.OpenSession())
        {
            items = session.CreateQuery("from Item").List<Item>();
        }
        return View(items);
    }
}

View Code

7.View代码

ViewsHomeCreate.cshtml

 1 @model IEnumerable<FluentNHibernateDemo1.Models.Item>
 2 
 3 @{
 4     Layout = null;
 5 }
 6 
 7 <!DOCTYPE html>
 8 
 9 <html>
10 <head>
11     <link href="~/Content/bootstrap.min.css" rel="stylesheet" />
12     <meta name="viewport" content="width=device-width" />
13     <title>Index</title>
14 </head>
15 <body>
16     <p>
17         @Html.ActionLink("Create New", "Create")
18     </p>
19     <table class="table">
20         <tr>
21             <th>
22                 @Html.DisplayNameFor(model => model.Name)
23             </th>
24             <th>
25                 @Html.DisplayNameFor(model => model.Age)
26             </th>
27             <th>
28                 @Html.DisplayNameFor(model => model.Description)
29             </th>
30             <th></th>
31         </tr>
32     
33     @foreach (var item in Model) {
34         <tr>
35             <td>
36                 @Html.DisplayFor(modelItem => item.Name)
37             </td>
38             <td>
39                 @Html.DisplayFor(modelItem => item.Age)
40             </td>
41             <td>
42                 @Html.DisplayFor(modelItem => item.Description)
43             </td>
44             <td>
45                 @Html.ActionLink("Edit", "Edit", new { id=item.Id }) |
46                 @Html.ActionLink("Delete", "Delete", new { id=item.Id })
47             </td>
48         </tr>
49     }
50     
51     </table>
52 </body>
53 </html>

Index.cshtml

 1 <!DOCTYPE html>
 2 
 3 <html>
 4 <head>
 5     <link href="~/Content/bootstrap.min.css" rel="stylesheet" />
 6     <meta name="viewport" content="width=device-width" />
 7     <title>Create</title>
 8     <script src="~/Scripts/jquery-1.9.1.min.js"></script>
 9     <script src="~/Scripts/jquery.validate.min.js"></script>
10     <script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
11 </head>
12 <body>
13     
14     
15     @using (Html.BeginForm()) 
16     {
17         @Html.AntiForgeryToken()
18         
19         <div class="form-horizontal">
20             <h4>Item</h4>
21             <hr />
22             @Html.ValidationSummary(true, "", new { @class = "text-danger" })
23             <div class="form-group">
24                 @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
25                 <div class="col-md-10">
26                     @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
27                     @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
28                 </div>
29             </div>
30     
31             <div class="form-group">
32                 @Html.LabelFor(model => model.Age, htmlAttributes: new { @class = "control-label col-md-2" })
33                 <div class="col-md-10">
34                     @Html.EditorFor(model => model.Age, new { htmlAttributes = new { @class = "form-control" } })
35                     @Html.ValidationMessageFor(model => model.Age, "", new { @class = "text-danger" })
36                 </div>
37             </div>
38     
39             <div class="form-group">
40                 @Html.LabelFor(model => model.Description, htmlAttributes: new { @class = "control-label col-md-2" })
41                 <div class="col-md-10">
42                     @Html.EditorFor(model => model.Description, new { htmlAttributes = new { @class = "form-control" } })
43                     @Html.ValidationMessageFor(model => model.Description, "", new { @class = "text-danger" })
44                 </div>
45             </div>
46     
47             <div class="form-group">
48                 <div class="col-md-offset-2 col-md-10">
49                     <input type="submit" value="Create" class="btn btn-default" />
50                 </div>
51             </div>
52         </div>
53     }
54     
55     <div>
56         @Html.ActionLink("Back to List", "Index")
57     </div>
58 </body>
59 </html>

Create.cshtml

 1 @model FluentNHibernateDemo1.Models.Item
 2 
 3 @{
 4     Layout = null;
 5 }
 6 
 7 <!DOCTYPE html>
 8 
 9 <html>
10 <head>
11     <meta name="viewport" content="width=device-width" />
12     <link href="~/Content/bootstrap.min.css" rel="stylesheet" />
13     <script src="~/Scripts/jquery-1.9.1.min.js"></script>
14     <script src="~/Scripts/jquery.validate.min.js"></script>
15     <script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
16 
17     <title>Edit</title>
18 </head>
19 <body>
20 
21 
22     @using (Html.BeginForm())
23     {
24         @Html.AntiForgeryToken()
25 
26         <div class="form-horizontal">
27             <h4>Item</h4>
28             <hr />
29             @Html.ValidationSummary(true, "", new { @class = "text-danger" })
30             @Html.HiddenFor(model => model.Id)
31 
32             <div class="form-group">
33                 @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
34                 <div class="col-md-10">
35                     @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
36                     @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
37                 </div>
38             </div>
39 
40             <div class="form-group">
41                 @Html.LabelFor(model => model.Age, htmlAttributes: new { @class = "control-label col-md-2" })
42                 <div class="col-md-10">
43                     @Html.EditorFor(model => model.Age, new { htmlAttributes = new { @class = "form-control" } })
44                     @Html.ValidationMessageFor(model => model.Age, "", new { @class = "text-danger" })
45                 </div>
46             </div>
47 
48             <div class="form-group">
49                 @Html.LabelFor(model => model.Description, htmlAttributes: new { @class = "control-label col-md-2" })
50                 <div class="col-md-10">
51                     @Html.EditorFor(model => model.Description, new { htmlAttributes = new { @class = "form-control" } })
52                     @Html.ValidationMessageFor(model => model.Description, "", new { @class = "text-danger" })
53                 </div>
54             </div>
55 
56             <div class="form-group">
57                 <div class="col-md-offset-2 col-md-10">
58                     <input type="submit" value="Save" class="btn btn-default" />
59                 </div>
60             </div>
61         </div>
62     }
63 
64     <div>
65         @Html.ActionLink("Back to List", "Index")
66     </div>
67 </body>
68 </html>

Edit.cshtml

 1 @model FluentNHibernateDemo1.Models.Item
 2 
 3 @{
 4     Layout = null;
 5 }
 6 
 7 <!DOCTYPE html>
 8 
 9 <html>
10 <head>
11     <meta name="viewport" content="width=device-width" />
12     <link href="~/Content/bootstrap.min.css" rel="stylesheet" />
13     <title>Delete</title>
14 </head>
15 <body>
16     <div>
17         <h4>Item</h4>
18         <hr />
19         <dl class="dl-horizontal">
20             <dt>
21                 @Html.DisplayNameFor(model => model.Name)
22             </dt>
23     
24             <dd>
25                 @Html.DisplayFor(model => model.Name)
26             </dd>
27     
28             <dt>
29                 @Html.DisplayNameFor(model => model.Age)
30             </dt>
31     
32             <dd>
33                 @Html.DisplayFor(model => model.Age)
34             </dd>
35     
36             <dt>
37                 @Html.DisplayNameFor(model => model.Description)
38             </dt>
39     
40             <dd>
41                 @Html.DisplayFor(model => model.Description)
42             </dd>
43     
44         </dl>
45     </div>
46     <p>
47         @Html.ActionLink("Delete", "DeleteConfirm", new { id = Model.Id }) |
48         @Html.ActionLink("Back to List", "Index")
49     </p>
50 </body>
51 </html>

Delete.cshtml

8.好了，在chrome中运行正常

Index

Create

Edit

附上完整代码:

http://pan.baidu.com/s/1sloW1M9

密码: 9zhr

本人第一个例子，有不足之处欢迎指正

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原文地址：https://www.cnblogs.com/conan77/p/5373480.html