1、在Startup.cs文件中注入，ConfigureServices方法
services.Configure<MyConfig>(Configuration.GetSection("MyConfig"));
AppSetting.json文件
"MyConfig": {
"ResVersion": "1.0.2 Beta"
},
自定义类
public class MyConfig
{
public string ResVersion { get; set; }
}
使用
public class ValuesController : Controller
{
private readonly MyConfig _config; public ValuesController(IOptions<MyConfig> op)
{
_config = op.Value;
}
}
2、读取指定节点下节点值。Nuget引入Microsoft.Extensitions.Configuration。
自定义AppSettingHelper.cs。
public class AppSettingsHelper
{
private static IConfigurationSection appSections = null; public static string AppSetting(string key)
{
string str = "";
if (appSections.GetSection(key) != null)
{
str = appSections.GetSection(key).Value;
}
return str;
}
public static void SetAppSetting(IConfigurationSection section)
{
appSections = section;
}
}
在Startup.cs中ConfigureServices引入
AppSettingsHelper.SetAppSetting(Configuration.GetSection("AppSettings"));
AppSetting.json文件，只限AppSettings下一级节点
"AppSettings": {
"Url": "test"
}
使用
var url = AppSettingsHelper.AppSetting("Url");
3、不通过依赖注入形式。自定义AppSettingHelper.cs类。
Nuget引入Microsoft.Extensitions.Configuration和Microsoft.Extensitions.Configuration.Json
public class AppSettingsHelper
{
public static IConfiguration Configuration { get; set; }
static AppSettingsHelper()
{
//ReloadOnChange = true 当appsettings.json被修改时重新加载
Configuration = new ConfigurationBuilder()
.Add(new JsonConfigurationSource { Path = "appsettings.json", ReloadOnChange = true })
.Build();
} public static string SMSSign
{
get { return Configuration["SMS:SMSSign"]; }
}
}
AppSetting.json配置文件
"SMS": {
"SMSSign": "测试"
},
使用直接调用 AppSettingHelper.SMSSign;