Method for the. net core static class to get appsettings
- 2021-11-13 07:10:49
- OfStack
Injection acquisition
Injection access through IConfiguration direct access to the method in the official document, you can directly see here
For example: appsettings. json
{
"Position": {
"Title": " Editor ",
"Name": "Joe Smith"
},
"MyKey": "My appsettings.json Value",
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft": "Warning",
"Lifetime": "Information"
}
},
"AllowedHosts": "*"
}
You can take the value in the form of colon separation with injected IConfiguration, as follows
var name = Configuration["Position:Name"];
Entity class acquisition
It is not convenient to obtain the values corresponding to multiple combinations individually. For example, Logging should be received directly with one class as follows:
First define a class corresponding to the json node
public class Logging
{
public LogLevel LogLevel { get; set; }
}
public class LogLevel
{
public string Default { get; set; }
public string Microsoft { get; set; }
public string Lifetime { get; set; }
}
Then ConfigureServices increases in Startup
services.Configure<Logging>(Configuration.GetSection("Logging"));
Inject directly into the place called
private readonly Logging _config;
public HomeController(IOptions<Logging> config)
{
_config = config.Value;
}
Static class acquisition
If it is used in a static class, you can write this in the constructor in Startup
public Startup(IConfiguration configuration)
{
Configuration = configuration;
configuration.GetSection("Logging").Bind(MySettings.Setting);
}
Bind the node directly to an instance using the Bind method of IConfigurationSection, noting that the example must be initialized.
public static class MySettings
{
public static Logging Setting { get; set; } = new Logging();
}
With the properties of static classes, they can be used in static classes.