AspNetCore Odata 8.0 获取单个实体404未找到

Question

我最近开始使用 Microsoft.AspNetCore.OData（8.0.0 版）包，在控制器中实现检索单个实体时遇到问题，returns 404 Not found 响应时我尝试请求 URL。以下是我的代码和配置，感谢您的查看：

套餐

Microsoft.AspNetCore.OData(8.0.0)
Microsoft.EntityFrameworkCore(6.0.2)
Microsoft.EntityFrameworkCore.SqlServer(6.0.2)
Microsoft.EntityFrameworkCore.工具(6.0.2)
Microsoft.Extensions.DependencyInjection(6.0.0)
Microsoft.Extensions.Logging(6.0.0)

Targeting framework: .NET 6.0

Project: ASP.NET Core Web API

Program.cs

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddDbContext<DbContext>(options =>
    options.UseSqlServer(builder.Configuration.GetConnectionString("DbContext")));

// Add services to the container with odata
var odataBuilder = new ODataConventionModelBuilder();
odataBuilder.EntitySet<User>("users");
builder.Services.AddControllers().AddOData(options =>options.AddRouteComponents("v1",odataBuilder.GetEdmModel()).Filter().Select().OrderBy().SetMaxTop(100).SkipToken().Count());

User.cs

[Table("User")]
    public class User
    {
        [Required]
        [Key]
        [MaxLength(256)]
        [Column("Id")]
        public string Id { get; set; }

        [Required]
        [MaxLength(256)]
        [Column("Surname_en")]
        public string Surname_en { get; set; }

        [Required]
        [MaxLength(256)]
        [Column("Firstname_en")]
        public string Firstname_en { get; set; }

        [MaxLength(50)]
        [Column("Surname_cn")]
        public string Surname_cn { get; set; }

        [MaxLength(50)]
        [Column("Firstname_cn")]
        public string Firstname_cn { get; set; }

        [MaxLength(1024)]
        [Column("Email")]
        public string? Email { get; set; }

        [Required]
        [Column("CreatedDate")]
        public DateTime CreatedDate { get; set; }
    }

UsersController.cs

using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.OData.Query;
using Microsoft.AspNetCore.OData.Routing.Controllers;
using Microsoft.AspNetCore.OData.Results;
using Microsoft.AspNetCore.OData.Formatter;

public class UsersController : ODataController
    {
        private readonly DbContext _context;

        public UsersController(DbContext context)
        {
            _context = context;
        }

        [EnableQuery(PageSize = 50)]
        public IQueryable<User> Get()
        {
            return _context.User.AsQueryable();
        }

        [EnableQuery]
        public SingleResult<User> Get([FromODataUri] string id)
        {
            return SingleResult.Create(_context.User
                .Where(m => m.Id == id));
        }
}

第一个 Get 函数正在与 URL:

https://localhost/v1/users

但是第二个函数 不工作 URL，它 returns 一个 404 Not found 状态代码，没有错误消息，它确实根本没有命中函数（当我在代码行设置断点时）：

https://localhost/v1/users(test@123.com)

或

https://localhost/v1/users('test@123.com')

或

https://localhost/v1/users/test@123.com

Answer 1

经过多次尝试，包括更改NuGet打包版本、添加和删除属性、使用其他类型的变量作为主键...等等。我发现解决方案与配置、数据类型和属性无关。是参数的名称!

参数名必须写成Key

[EnableQuery]
public SingleResult<User> Get([FromODataUri]Guid key)
{
return SingleResult.Create(_context.User
                .Where(m => m.Id == key));
}

现在已经很好用了，参数名是Key，不管我把类型改成Guid。

AspNetCore Odata 8.0 获取单个实体404未找到

AspNetCore Odata 8.0 Get single entity 404 not found

c#

asp.net-core-webapi

.net-6.0

microsoft.aspnetcore.odata