对不起,我确定我有一些基本错误,但我无法发现。单步执行启动代码表明正在正确加载appsettings.json,但测试类的config类为null。
启动:
public class Startup
{
public Startup(IConfiguration configuration)
{
var builder = new ConfigurationBuilder().AddJsonFile("appSettings.json");
Configuration = builder.Build();
}
public IConfiguration Configuration { get; set; }
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc().AddSessionStateTempDataProvider();
services.AddSession();
services.Configure<EnvironmentConfig>(Configuration.GetSection("EnvironmentConfig"));
}
}
ConfigTester:
public class ConfigTester
{
private readonly IOptions<EnvironmentConfig> _environmentConfig;
public ConfigTester(IOptions<EnvironmentConfig> environmentConfig)
{
_environmentConfig = environmentConfig;
}
public string ConfigName()
{
return _environmentConfig.Value.Name; //_environmentConfig.Value is set, but Name is null
}
}
EnvironmentConfig:
public class EnvironmentConfig
{
public string Name;
}
appSettings.json:
{
"Logging": {
"IncludeScopes": false,
"Debug": {
"LogLevel": {
"Default": "Warning"
}
},
"Console": {
"LogLevel": {
"Default": "Warning"
}
}
},
"EnvironmentConfig": {
"Name": "develop"
}
}
我错过了什么?
当使用IServiceCollection.Configure
时,ConfigurationBinder
类最终将你的appSettings.json
文件中的值绑定到你的EnvironmentConfig
类only binds against properties。这意味着您所要做的就是将您的公共领域更改为公共财产:
public class EnvironmentConfig
{
public string Name { get; set; }
}
在使用serives.Configure<T>()
配置选项之前,在ConfigureServices方法中添加以下行。要使用“选项”功能,您必须启用它。
services.AddOptions();