ASP.NET Web API和ASP.NET Web MVC中使用Ninject
一、准备工作
1、新建一个名为MvcDemo的空解决方案
2、新建一个名为MvcDemo.WebUI的空MVC应用程序
3、使用NuGet安装Ninject库
二、在ASP.NET MVC中使用Ninject
1、新建一个Product实体类，代码如下：
public class Product
{
public int ProductId { get; set ; }
public string Name { get; set ; }
public string Description { get; set ; }
public decimal Price { get; set ; }
public string Category { set; get ; }
}
2、添加一个IProductRepository接口及实现
public interface IProductRepository
{
IQueryable <Product > Products { get; }
IQueryable <Product > GetProducts();
Product GetProduct();
bool AddProduct(Product product);
bool UpdateProduct(Product product);
bool DeleteProduct(int productId);
}
public class ProductRepository : IProductRepository
{
private List < Product> list;
public IQueryable < Product> Products
{
get { return GetProducts(); }
}
public IQueryable < Product> GetProducts()
{
list = new List < Product>
{
new Product {ProductId = 1,Name = "苹果",Category = "水果" ,Price = 1},
new Product {ProductId = 2,Name = "鼠标",Category = "电脑配件" ,Price = 50},
new Product {ProductId = 3,Name = "洗发水",Category = "日用品" ,Price = 20}
};
return list.AsQueryable();
}
public Product GetProductById( int productId)
{
return Products.FirstOrDefault(p => p.ProductId == productId);
}
public bool AddProduct( Product product)
{
if (product != null )
{
list.Add(product);
return true ;
}
return false ;
}
public bool UpdateProduct( Product product)
{
if (product != null )
{
if (DeleteProduct(product.ProductId))
{
AddProduct(product);
return true ;
}
}
return false ;
}
public bool DeleteProduct( int productId)
{
var product = GetProductById(productId);
if (product != null )
{
list.Remove(product);
return true ;
}
return false ;
}
}
3、添加一个实现了IDependencyResolver接口的Ninject依赖解析器类
public class NinjectDependencyResolverForMvc : IDependencyResolver
{
private IKernel kernel;
public NinjectDependencyResolverForMvc( IKernel kernel)
{
if (kernel == null )
{
throw new ArgumentNullException( "kernel" );
}
this .kernel = kernel;
}
public object GetService( Type serviceType)
{
return kernel.TryGet(serviceType);
}
public IEnumerable < object> GetServices( Type serviceType)
{
return kernel.GetAll(serviceType);
}
}
4、添加一个NinjectRegister类，用来为MVC和WebApi注册Ninject容器
public class NinjectRegister
{
private static readonly IKernel Kernel;
static NinjectRegister()
{
Kernel= new StandardKernel ();
AddBindings();
}
public static void RegisterFovMvc()
{
DependencyResolver .SetResolver(new NinjectDependencyResolverForMvc (Kernel));
}
private static void AddBindings()
{
Kernel.Bind<IProductRepository >().To< ProductRepository>();
}
}
5、在Global.asax文件的Application_Start方法中添加下面代码：
NinjectRegister .RegisterFovMvc(); //为ASP.NET MVC注册IOC容器
6、新建一个名为ProductController的控制器，ProductController的构造函数接受了一个IProductRepository参数，当ProductController 被实例化的时候，Ninject就为其注入了ProductRepository的依赖.
public class ProductController : Controller
{
private IProductRepository repository;
public ProductController(IProductRepository repository)
{
this .repository = repository;
}
public ActionResult Index()
{
return View(repository.Products);
}
}
7、视图代码用来展示商品列表
@model IQueryable<MvcDemo.WebUI.Models. Product >
@{
ViewBag.Title = "MvcDemo Index" ;
}
@ foreach ( var product in Model)
{
<div style=" border-bottom :1px dashed silver ;">
< h3> @product.Name </ h3>
< p> 价格：@ product.Price </ p >
</div >
}
8、运行效果如下：
三、在ASP.NET Web Api中使用Ninject
1、添加一个实现了IDependencyResolver接口的Ninject依赖解析器类
namespace MvcDemo.WebUI.AppCode
{
public class NinjectDependencyResolverForWebApi : NinjectDependencyScope ,IDependencyResolver
{
private IKernel kernel;
public NinjectDependencyResolverForWebApi( IKernel kernel)
: base (kernel)
{
if (kernel == null )
{
throw new ArgumentNullException( "kernel" );
}
this .kernel = kernel;
}
public IDependencyScope BeginScope()
{
return new NinjectDependencyScope(kernel);
}
}
public class NinjectDependencyScope : IDependencyScope
{
private IResolutionRoot resolver;
internal NinjectDependencyScope(IResolutionRoot resolver)
{
Contract .Assert(resolver != null );
this .resolver = resolver;
}
public void Dispose()
{
resolver = null ;
}
public object GetService( Type serviceType)
{
return resolver.TryGet(serviceType);
}
public IEnumerable < object> GetServices( Type serviceType)
{
return resolver.GetAll(serviceType);
}
}
}
2、在NinjectRegister类中添加注册依赖解析器的方法
public static void RegisterFovWebApi( HttpConfiguration config)
{
config.DependencyResolver = new NinjectDependencyResolverForWebApi (Kernel);
}
3、在Global.asax文件的Application_Start方法中添加下面代码：
NinjectRegister .RegisterFovWebApi( GlobalConfiguration.Configuration); //为WebApi注册IOC容器
4、新建一个名为MyApiController的控制器
public class MyApiController : ApiController
{
private IProductRepository repository;
public MyApiController(IProductRepository repository)
{
this .repository = repository;
}
// GET api/MyApi
[ HttpGet ]
public IEnumerable < Product> Get()
{
return repository.Products;
}
// GET api/MyApi/5
[ HttpGet ]
public Product Get( int id)
{
return repository.Products.FirstOrDefault(p => p.ProductId == id);
}
}
5、视图代码用来展示商品列表
@{
ViewBag.Title = "ApiDemo Index" ;
}
< script>
function GetAll() {
$.ajax({
url: "/api/MyApi" ,
type: "GET" ,
dataType: "json" ,
success: function (data) {
for (var i = 0; i < data.length; i++) {
$( "#list" ).append("<h3>" + data[i].Name + "</h3>");
$( "#list" ).append("<p>价格：" +data[i].Price + "</p>");
}
}
});
}
$( function () {
GetAll();
});
</ script>
< h2> Api Ninject Demo </h2 >
< div id="list" style=" border-bottom :1px dashed silver ;"></ div >
6、运行效果如下：
至此，我们就实现了共用一个NinjectRegister类完成了为MVC和Web Api注册Ninject容器