我想使用 IOptions 通过 POCO 获取配置,但它会抛出错误消息“模型绑定(bind)的复杂类型不能是抽象类型或值类型,并且必须具有无参数构造函数”
DatabaseSettings.cs
public class DatabaseSettings
{
public string MongoDBServer { get; set; }
}
appsettings.json
"DatabaseSettings": {
"MongoDBServer": "localhost"
},
"Logging": {
"IncludeScopes": false,
"LogLevel": {
"Default": "Warning"
}
}
Startup.cs
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
services.Configure<DatabaseSettings>(Configuration.GetSection("DatabaseSettings"));
}
Controller
public IActionResult Create(IOptions<DatabaseSettings> options)
{
string test = options.Value.MongoDBServer;
return View();
}
我不知道怎么办。你有什么建议给我吗?谢谢!
最佳答案
我遇到了同样的问题。我找到了 this回答很有帮助。
请尝试将 [FromServices] 添加到 Controller 操作:
public IActionResult Create([FromServices] IOptions<DatabaseSettings> options)
关于ASP.NET 核心 2 : Model bound complex types must not be abstract or value types and must have a parameterless constructor,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50029367/