The DNC reads the configuration JSON file into the class and uses it in the program

Configurationbuilder This class provides configuration bindings, Webhost provides default bindings (appsettings files) in the DNC program

If we need to load our own JSON config file how to handle

var New Configurationbuilder ();

Builder here provides a lot of ways to add

1, the first kind: Directly add the JSON file path, here need to pay attention to the JSON file address problem

  Builder. Addjsonfile ("path"). Build ();

2. The second type

  Builder. ADD ("instance of Iconfigurationsource ")

Builder. ADD (new"websiteconfig.json"falsetrue }). Bind ();

Set up the corresponding JSON file corresponding to the Entity model class

Configure the service inside:

Services. Configure<websiteconfig> (Configuration); // Configuration

For example, the database connection string configuration processing, or the system fixed configuration, here I expanded the next Npoco service extension add

Services. Addnpococontext (Options                = = configuration.get<websiteconfig>(). ConnectionStr;            });

How to get this configuration in the business layer or at other levels in the system

An interface that needs to be used here ioptions

Add injection-related classes in the service

Services. AddOptions ();

For example, a model class that injects related ioptions into our test class

PrivateIoptions<npocodatabasesetting>_options; PrivateIoptions<websiteconfig>_website; Privateitestrepository _testservices; PrivateITransaction _transaction;  PublicTestservices (IServiceProvider serviceprovider, ioptions<npocodatabasesetting> options, ITransaction Transaction, ioptions<websiteconfig>website, itestrepository testservices) {_options=options; _testservices=testservices; _transaction=transaction; _website=website; }

Such as:

Ioptions<websiteconfig> _website, we can pass

  /// <summary>        ///Test Get Data/// </summary>        /// <returns></returns>         PublicList<test>GetData () {stringWebName =_website.            Value.webname; List<Test> list =NewList<test>(); Try{_transaction.                               Begin (); List=_testservices.test ();            _transaction.commit (); }            Catch(Exception) {_transaction.            RollBack (); }            returnlist; }

Get to WebName, here is noteworthy JSON file Chinese garbled problem, to determine the JSON file encoding type UTF-8

The DNC reads the configuration JSON file into the class and uses it in the program