ASP. Net core usage record 2

Web site address ：
How to be in .NET Core SDK Switch between versions

.net sdk Version switching

Version change command ：dotnet new globaljson --sdk-version edition --force

CultureInfo

System.Globalization Classes under assemblies
it
Provides information about specific cultures （ For unmanaged code development , It is called a “ Zone setup ”） Information about . This information includes the name of the culture 、 The writing system 、 Calendar used 、 Sorting order of strings and formatting settings for dates and numbers .
In short , Is to provide some cultural information about some regions .

API and SDK The difference between

api Service interface , It can be called by everyone , But for developers of different languages , They call api The general flow is the same, but you always need to write the requested code . For those who need to call this frequently api For developers of , Of course, you don't want to write the requested code for each call , I hope it can be called more conveniently , that sdk emerge as the times require , It's right api Further encapsulation of the call , For developers who often use it , Just download sdk, You can use the service directly , There is no need to care about internal api Call mode procedure .

A dynamic proxy AOP function

1. install NuGet package ：Autofac.Extras.DynamicProxy

AOP I'm not going to repeat the concept here , and dotNET Core Built in interceptors （Filter、 middleware ） Is the difference between the Autofac Of AOP For specific business methods, not HTTP request .

2. establish UserServiceInterceptor Interception class , Inherited from IInterceptor：

public class UserServiceInterceptor:IInterceptor
{
    
    public virtual void Intercept(IInvocation invocation)
    {
    
        Console.WriteLine($"{
      DateTime.Now}:  Before method execution ");
        invocation.Proceed();
        Console.WriteLine($"{
      DateTime.Now}:  After method execution ");
    }
}

2、 modify Startup Class ConfigureContainer Method , Conduct AOP Registration of ：

public void ConfigureContainer(ContainerBuilder builder)
{
    
    builder.RegisterType<UserServiceInterceptor>();
    builder.RegisterType<UserService>().As<IUserService>()
        .EnableInterfaceInterceptors()
        .InstancePerLifetimeScope();
}

• register UserServiceInterceptor Interceptor
• register UserService Call... When serving EnableInterfaceInterceptors Enable interceptors

3、 modify UserService class , add to AOP Characteristic marks ：

[Intercept(typeof(UserServiceInterceptor))]
public class UserService: IUserService
{
    
    //public IDeptService DeptService { get; set; }
    public string GetUserName()
    {
    
        Console.WriteLine($"{
      DateTime.Now}:  Method execution ");
        return "oec2003";
        //return $"oec2003({DeptService.GetDeptName()})";
    }
}

4、 The result of the call is as follows ：