c# - 在 asp.net mvc 中添加 BaseController 会出现错误

Question

我有一个像这样的ModuleController。 (ASP Web API Controller )。 (工作正常)

using System.Collections.Generic;
using System.Web.Http;
using AMMS.Logger.Interfaces;
using AMMS.Service.Interfaces;
using AMMS.Service.Models;

namespace AMMS.Api.Controllers
{
    public class ModuleController: ApiController
    {
        private readonly IModuleService _moduleService;

        public ModuleController(IModuleService moduleService) 
        {
            _moduleService = moduleService;
        }

        public List<AmmsModule> Get(string userId)
        {
            return _moduleService.GetModules(userId);
        } 
    }
}

我想添加一个所有 Controller 都通用的功能。所以我添加了一个像这样的BaseController:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Reflection;
using System.Web.Http;
using AMMS.Logger;
using AMMS.Logger.Interfaces;

namespace AMMS.Api.Controllers
{
    public class BaseController : ApiController
    {
        private readonly ILoggerService _loggerService;

        public BaseController(ILoggerService loggerService)
        {
            _loggerService = loggerService;
        }

        protected virtual bool OnError(string actionName, MethodInfo methodInfo, Exception exception)
        {
            _loggerService.LogInfo($"Exception : {exception}, MethodInfo : {methodInfo}, actionName: {actionName}");
            return false;
        }
    }
}

然后更改我的 ModuleController 以继承此 BaseController

using System.Collections.Generic;
using System.Web.Http;
using AMMS.Logger.Interfaces;
using AMMS.Service.Interfaces;
using AMMS.Service.Models;

namespace AMMS.Api.Controllers
{
    public class ModuleController: BaseController
    {
        private readonly IModuleService _moduleService;
        private readonly ILoggerService _loggerService;

        public ModuleController(IModuleService moduleService, ILoggerService loggerService) : base(loggerService)
        {
            _moduleService = moduleService;
            _loggerService = loggerService;
        }

        public List<AmmsModule> Get(string userId)
        {
            return _moduleService.GetModules(userId);
        } 
    }
}

但是添加 BaseController 后无法加载模块。 当我调试时，ModuleController的代码似乎没有执行。 ! 在客户端我得到--

Failed to load resource: the server responded with a status of 500 (Internal Server Error)

这可能是什么原因(在添加 BaseController 之后，代码根本不执行)？

Answer 1

基础 Controller 将 private readonly ILoggerService _loggerService; 更改为 protected readonly ILoggerService _loggerService;(如果您想在派生类中访问它)

模块 Controller :

using System.Collections.Generic;
using System.Web.Http;
using AMMS.Logger.Interfaces;
using AMMS.Service.Interfaces;
using AMMS.Service.Models;

namespace AMMS.Api.Controllers
{
    public class ModuleController: BaseController
    {
        private readonly IModuleService _moduleService;

        public ModuleController(IModuleService moduleService, ILoggerService loggerService) : base(loggerService)
        {
            _moduleService = moduleService;
        }

        public List<AmmsModule> Get(string userId)
        {
            return _moduleService.GetModules(userId);
        } 
    }
}