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【移动应用开发技术】ASP.NET中怎么实现Routing路由
Routing框架的主要流程Route参数和约束条件的改进routes.MapRoute(
"Product",
"Product/{productId}",
defaults:
new
{
controller
=
"Product",
action
=
"Details"
},
constraints:
new
{
productId
=
@"\d+"
});routes.MapRoute(
"Product",
"Product/{productId}",
defaults:
new
{
controller
=
"Product",
action
=
"Details"
},
constraints:
new
{
productId
=
@"\d+"
});{parameter:constraint}目前支持的约束如下：/upload/information/20210522/379/535397.pngroutes.MapRoute(
"Product",
"Product/{productId:long?}",
new
{
controller
=
"Product",
action
=
"Details"
});routes.MapRoute(
"Product",
"Product/{productId:long?}",
new
{
controller
=
"Product",
action
=
"Details"
});routes.MapRoute(
"Product",
"Product/{productId:long=1000}",
new
{
controller
=
"Product",
action
=
"Details"
});routes.MapRoute(
"Product",
"Product/{productId:long=1000}",
new
{
controller
=
"Product",
action
=
"Details"
});通用Routingpublic
void
Configure(IApplicationBuilder
app)
{
RouteCollection
routes
=
new
RouteCollection();
routes.Add(new
TemplateRoute(new
DebuggerRouteHandler("RouteHandlerA"),
"",
null));
routes.Add(new
TemplateRoute(new
DebuggerRouteHandler("RouteHandlerB"),
"test/{a}/{b:int}",
null));
routes.Add(new
TemplateRoute(new
DebuggerRouteHandler("RouteHandlerC"),
"test2",
null));
app.UseRouter(routes);
//
开启Routing功能
}public
void
Configure(IApplicationBuilder
app)
{
RouteCollection
routes
=
new
RouteCollection();
routes.Add(new
TemplateRoute(new
DebuggerRouteHandler("RouteHandlerA"),
"",
null));
routes.Add(new
TemplateRoute(new
DebuggerRouteHandler("RouteHandlerB"),
"test/{a}/{b:int}",
null));
routes.Add(new
TemplateRoute(new
DebuggerRouteHandler("RouteHandlerC"),
"test2",
null));
app.UseRouter(routes);
//
开启Routing功能
}public
class
DebuggerRouteHandler
:
IRouter
{
private
string
_name;
public
DebuggerRouteHandler(string
name)
{
_name
=
name;
}
public
string
GetVirtualPath(VirtualPathContext
context)
{
throw
new
NotImplementedException();
}
public
async
Task
RouteAsync(RouteContext
context)
{
var
routeValues
=
string.Join("",
context.RouteData.Values);
var
message
=
String.Format("{0}
Values={1}
",
_name,
routeValues);
await
context.HttpContext.Response.WriteAsync(message);
context.IsHandled
=
true;
}
}正常：`http://localhost:5000/`
正常：`http://localhost:5000/test/yyy/12`
404
：`http://localhost:5000/test/yyy/s`
正常：`http://localhost:5000/test2`
404
：`http://localhost:5000/test3`正常：`http://localhost:5000/`
正常：`http://localhost:5000/test/yyy/12`
404
：`http://localhost:5000/test/yyy/s`
正常：`http://localhost:5000/test2`
404
：`http://localhost:5000/test3`MVC中的Routingpublic
void
ConfigureServices(IServiceCollection
services)
{
services.AddMvc();
}
public
void
Configure(IApplicationBuilder
app)
{
app.UseMvc(routeBuilder
=>
{
routeBuilder.MapRoute(
name:
"default",
template:
"{controller}/{action}/{id?}",
defaults:
new
{
controller
=
"Home",
action
=
"Index"
});
});
}public
void
ConfigureServices(IServiceCollection
services)
{
services.AddMvc();
}
public
void
Configure(IApplicationBuilder
app)
{
app.UseMvc(routeBuilder
=>
{
routeBuilder.MapRoute(
name:
"default",
template:
"{controller}/{action}/{id?}",
defaults:
new
{
controller
=
"Home",
action
=
"Index"
});
});
}public
class
ProductsController
:
Controller
{
public
IActionResult
Index()
{
return
Content("It
Works
with
Controller
Base
Class!");
}
}
public
class
DemoController
{
public
IActionResult
Index()
{
return
new
ObjectResult("It
Works
without
Controller
Base
Class!");
}
}
public
class
APIController
{
public
object
Index()
{
return
new
{
Code
=
100000,
Data
=
"OK"
};
}
}public
class
ActionFilterTest
:
IActionFilter
{
public
void
OnActionExecuting(ActionExecutingContext
context)
{
var
typeName
=
context.Controller.GetType().FullName;
Console.WriteLine(typeName
+
"."
+
context.ActionDescriptor.Name
+
":Start");
}
public
void
OnActionExecuted(ActionExecutedContext
context)
{
var
typeName
=
context.Controller.GetType().FullName;
Console.WriteLine(typeName
+
"."
+
context.ActionDescriptor.Name
+
":END");
}
}services.Configure(options
=>
{
options.Filters.Add(typeof(ActionFilterTest));
});RouterTest.ProductsController.Index:Start
RouterTest.ProductsController.Index:End
RouterTest.DemoController.Index:Start
RouterTest.DemoController.Index:End
RouterTest.APIController.Index:Start
RouterTest.APIController.Index:End自定义Routepublic
class
PromoTemplateRoute
:
TemplateRoute
{
public
PromoTemplateRoute(IRouter
target,
string
routeTemplate,
IInlineConstraintResolver
inlineConstraintResolver)
:
base(target,
routeTemplate,
inlineConstraintResolver:
inlineConstraintResolver)
{
}
public
PromoTemplateRoute(IRouter
target,
string
routeTemplate,
IDictionarypublic
class
PromoTemplateRoute
:
TemplateRoute
{
public
PromoTemplateRoute(IRouter
target,
string
routeTemplate,
IInlineConstraintResolver
inlineConstraintResolver)
:
base(target,
routeTemplate,
inlineConstraintResolver:
inlineConstraintResolver)
{
}
public
PromoTemplateRoute(IRouter
target,
string
routeTemplate,
IDictionarypublic
static
class
RouteBuilderExtensions
{
public
static
IRouteBuilder
MapPromoRoute(this
IRouteBuilder
routeCollectionBuilder,
string
name,
string
template)
{
MapPromoRoute(routeCollectionBuilder,
name,
template,
defaults:
null);
return
routeCollectionBuilder;
}
public
static
IRouteBuilder
MapPromoRoute(this
IRouteBuilder
routeCollectionBuilder,
string
name,
string
template,
object
defaults)
{
return
MapPromoRoute(routeCollectionBuilder,
name,
template,
defaults,
constraints:
null,
dataTokens:
null);
}
public
static
IRouteBuilder
MapPromoRoute(this
IRouteBuilder
routeCollectionBuilder,
string
name,
string
template,
object
defaults,
object
constraints,
object
dataTokens)
{
var
inlineConstraintResolver
=
routeCollectionBuilder.ServiceProvider.GetService();
routeCollectionBuilder.Routes.Add(
new
PromoTemplateRoute(
routeCollectionBuilder.DefaultHandler,
name,
template,
ObjectToDictionary(defaults),
ObjectToDictionary(constraints),
ObjectToDictionary(dataTokens),
inlineConstraintResolver));
return
routeCollectionBuilder;
}
private
static
IDictionaryroutes.MapPromoRoute(
name:
"default2",
template:
"promo/{controller}/{action}/{id?}",
defaults:
new
{
controller
=
"Home",
action
=
"Index"
});基于Attribute的Routing[Route("bookhome")]
public
class
HomeController
:
Controller
{
public
IActionResult
Index()
{
return
View();
}
[Route("about")]
public
IActionResult
About()
{
ViewBag.Message
=
"Your
application
description
page.";
return
View();
}
[Route("contactus")]
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}[Route("bookhome")]
public
class
HomeController
:
Controller
{
public
IActionResult
Index()
{
return
View();
}
[Route("about")]
public
IActionResult
About()
{
ViewBag.Message
=
"Your
application
description
page.";
return
View();
}
[Route("contactus")]
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}/bookhome
/bookhome/about
/bookhome/contactus[Route("products/{productId:int}")][Route("products/{productId:int}")][Route("book/[controller]/[action]")][HttpGet("products/{productId:int}")][HttpGet("products/{productId:int}")][Route("book")]
public
class
HomeController
:
Controller
{
public
IActionResult
Index()
{
return
View();
}
public
IActionResult
About()
{
ViewBag.Message
=
"Your
application
description
page.";
return
View();
}
}[Route("book")]
public
class
HomeController
:
Controller
{
public
IActionResult
Index()
{
return
View();
}
public
IActionResult
About()
{
ViewBag.Message
=
"Your
application
description
page.";
return
View();
}
}[Route("book")]
public
class
HomeController
:
Controller
{
public
IActionResult
Index()
{
return
View();
}
[Route("about")]
public
IActionResult
About()
{
ViewBag.Message
=
"Your
application
description
page.";
return
View();
}
}[Route("book")]
public
class
HomeController
:
Controller
{
public
IActionResult
Index()
{
return
View();
}
[Route("about")]
public
IActionResult
About()
{
ViewBag.Message
=
"Your
application
description
page.";
return
View();
}
}[Route("book")]
public
class
HomeController
:
Controller
{
[Route("index")]
public
IActionResult
Index()
{
return
View();
}
[Route("about")]
public
IActionResult
About()
{
ViewBag.Message
=
"Your
application
description
page.";
return
View();
}
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}[Route("book")]
public
class
HomeController
:
Controller
{
[Route("index")]
public
IActionResult
Index()
{
return
View();
}
[Route("about")]
public
IActionResult
About()
{
ViewBag.Message
=
"Your
application
description
page.";
return
View();
}
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}[Route("book")]
public
class
HomeController
:
Controller
{
[Route("Contact")]
[HttpGet("home/Contact2")]
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}[Route("book")]
public
class
HomeController
:
Controller
{
[Route("Contact")]
[HttpGet("home/Contact2")]
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}[Route("Contact")]
[HttpPost("home/Contact2")][Route("Contact")]
[HttpPost("home/Contact2")][HttpGet("Contact")]
[HttpPost("home/Contact2")][Route("book")]
[Route("tom")]
public
class
HomeController
:
Controller
{
[Route("Contact")]
[Route("ContactUS")]
[HttpPost("home/Contact2")]
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}[Route("book")]
[Route("tom")]
public
class
HomeController
:
Controller
{
[Route("Contact")]
[Route("ContactUS")]
[HttpPost("home/Contact2")]
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}GET：/book/contact
GET：/book/contactus
GET：/tom/contact
GET：/tom/contactus
POST：/book/home/contact2
POST：/tom/home/contact2[Route("book",
Order
=
1)]
[Route("tom",
Order
=
0)]
public
class
HomeController
:
Controller
{
[Route("Contact",
Order
=
1)]
[Route("ContactUS",
Order
=
0)]
[HttpPost("home/Contact2",
Order
=
2)]
public
IActionResult
Contact()
{
ViewBag.Message
=
"Your
contact
page.";
return
View();
}
}自定义内联参数约束[Route("index/{productId:aabbcc}")]public
class
AABBCCRouteConstraint
:
IRouteConstraint
{
public
bool
Match(HttpContext
httpContext,
IRouter
route,
string
routeKey,
IDictionaryservices.Configure(opt
=>
{
opt.ConstraintMap.Add("aabbcc",
typeof(AABBCCRouteConstraint));
});services.Configure(opt
=>
{
opt.ConstraintMap.Add("aabbcc",
typeof(AABBCCRouteConstraint));
});public
class
ABCDRouteConstraint
:
IRouteConstraint
{
public
int
A
{
get;
private
set;
}
public
int
B
{
get;
private
set;
}
public
int
C
{
ge
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