ASP. NET Core configuration file (ubiquitous dependency injection)

Front Smoke:

The previous XML node configuration file was canceled in. NET Core, and the *.json format was used instead.

In the Startup.cs file, construct the method build Appsetting.json file,

This paper summarizes the official tool class of parsing configuration file;

I.. appsettings.json file

In the new Core Web project, there is a global configuration variable by default: Iconfigurationroot

The indexer and GetSection method are provided;

{  "Host":"http://localhost:5966/",  "Title":"Hello World",  "Sitekeywords":"NET , C #, ASP. NET core, ASP. NET EntityFramework Core",  "Description":"DotNetClub:asp.net Core",  "ConnectionString":"Data source=localhost;initial Catalog=dbname; User Id=username; Password=pwd;",  "Redis": {    "Endpoints": ["localhost","6379" ],    "Password":"",    "Db":""  },  "Site": {    "Host":"http://localhost:5966",    "Title":"Hello World",    "Description":"DotNetClub:asp.net Core",    "Allowregister":true,    "Verifyregisteruser":false,    "adminuserlist": []  },  "CookieName":"Dotnetclub.user",  "Categories": [    {      "Key":"Share",      "Name":"Share"    },    {      "Key":"Ask",      "Name":"FAQ"    },    {      "Key":"Job",      "Name":"Recruitment"    }  ]}

To get the root node data:

configuration["ConnectionString"]

configuration["Title"]

Get node Data:

Services. Configure<redisoptions> (Configuration.getsection ("Redis"). Bind)

The focus is on the ioptions provided by this Microsoft.Extensions.Options.ConfigurationExtensions.

The Configure method binds a configuration in Appsettings.json to one of the entity objects. Such as:

     Public classredisoptions {/// <summary>        ///Redis end points, such as "{Host or Ip}:{port}"/// </summary>         Public string[] Endpoints {Get;Set; } /// <summary>        ///Redis Password/// </summary>         Public stringPassword {Get;Set; } /// <summary>        ///Default Redis Database/// </summary>         Public intDb {Get;Set; } }

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The completion of such a process is the Configure class implementation of a dependency injection;

ASP. NET Core configuration file (ubiquitous dependency injection)