如何解决我的 API 项目中的错误?

问题描述

我在我的项目中添加了一个 API 项目。虽然我在运行时已经给出了所有引用,但出现以下错误。我该如何解决?

enter image description here


这是我的启动文件:

公开课启动 { 公共启动(IConfiguration配置) { 配置=配置; }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddScoped(typeof(ShopContext));
        services.AddDbContext<ShopContext>(options => options.UseSqlServer(Configuration["ConnectionStrings:SqlConStr"].ToString(),o =>
            {
                o.MigrationsAssembly("BuyfiletData");
            }));
        services.AddScoped(typeof(IRepository<>),typeof(EfCoreGenericRepository<>));
        services.AddScoped<IProductRepository,EfCoreProductRepository>();
        services.AddScoped<IProductService,ProductManager>();



        services.AddControllers();
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app,IWebHostEnvironment env)
    {
        
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseHttpsRedirection();

        app.UseRouting();

        app.UseAuthorization();

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapControllers();
        });
    }
}

虽然我已经在我的项目中添加了所有引用,但我遇到了这个错误。尽管进行了大量研究,但我无法弄清楚。请帮我。 如果我有其他项目文件需要添加,我可以。


这是我的 EfCoreProductRepository 文件:

 public class EfCoreProductRepository : EfCoreGenericRepository<Product>,IProductRepository
    {
        
        private ShopContext _context { get=>_context as ShopContext;}

        public EfCoreProductRepository(DbContext context) : base(context)
        {
        }
        public List<Product> GetProductsWithCategory(string name,int page,int pageSize)
        {
            
            
                var products = _context.Products.AsQueryable();
                if (!string.IsNullOrEmpty(name))
                {
                    
                        products = products.Include(i => i.ProductCategories)
                    .ThenInclude(i => i.BasicCategory)
                    .Where(i => i.ProductCategories.Any(a =>
                    a.BasicCategory.Name.ToLower() == name.ToLower() || a.MainCategory.Name.ToLower()==name.ToLower() ||a.SubCategory.Name.ToLower()== name.ToLower()));
                    
                }
                return products.Skip((page - 1) * pageSize).Take(pageSize).ToList();
            
        }

        public List<Product> GetProductsWithFilters(List<Product> productList,int pageSize,int maxPrice,int minPrice)
        {
            
                var products = _context.Products.AsQueryable();
                /*products= products.Where(i => i.Brand == product.Brand && i.Point == product.Point&& i.Variety == product.Variety&& i.Size == product.Size&& i.Color == product.Color&& i.Gender == product.Gender);*/
                foreach (var product in productList)
                {
                    products = products.Where(i =>
                        i.Brand == product.Brand && i.Point == product.Point && i.Variety == product.Variety &&
                        i.Size == product.Size && i.Color == product.Color && i.Gender == product.Gender);
                }

                products.Where(i => i.Price > minPrice && i.Price < maxPrice);
                return products.Skip((page - 1) * pageSize).Take(pageSize).ToList();
            
        }

    

        public List<Product> GetProductsWithSearch(string word,int pageSize)
        {
          
                var products = _context.Products.Where(i=>i.Brand.Contains(word.ToLower())|| i.MainCategory.Contains(word.ToLower())|| i.Category.Contains(word.ToLower()) || i.Details.Contains(word.ToLower())).AsQueryable();
                return products.Skip((page - 1) * pageSize).Take(pageSize).ToList();
            
        }


       
    }

解决方法

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