我无法访问我的产品 ID 和我的产品类别，这是我的控制器，我有以下错误消息：答案

【问题标题】：I can not access my product ids and my product categories, here is my controller, I have the following error message:我无法访问我的产品 ID 和我的产品类别，这是我的控制器，我有以下错误消息：
【发布时间】：2022-11-27 22:02:26
【问题描述】：

AmbiguousMatchException：请求匹配多个端点。匹配：ApiBurgerNew.Controllers.BurgerController.GetBurgerByCat (ApiBurgerNew) ApiBurgerNew.Controllers.BurgerController.GetBurgerById (ApiBurgerNew)

我的控制器：

[ApiController]
    [Route("api")]
    public class BurgerController : ControllerBase
    {
        private readonly BurgerContext _context;
        private readonly IConfiguration _configuration;

        public BurgerController(BurgerContext context, IConfiguration configuration)
        {
            _context = context;
            _configuration = configuration;
        }
        
        [HttpGet]        
        public async Task<IActionResult> GetBurger()
        {
            var burger = await _context.Burger.ToListAsync();
            return Ok(burger);
        }
        
        //By category
        [HttpGet("{cat}")]
        public async Task<IActionResult> GetBurgerByCat(string cat)
        {
            var requete =                
                from b in _context.Burger                    
                join c in _context.Category                
                on b.CategoryId equals c.CategoryId                
                select new { b.BurgerId, b.Name, b.Description, b.Price, c.Category_Name };
            
            if (!string.IsNullOrEmpty(cat))
                requete = requete.Where(p => p.Category_Name.Contains(cat));
            return Ok(requete);

        }
        
        //By Id
        [HttpGet("{id}")]
        public async Task<IActionResult> GetBurgerById(int id)
        {
            var burger = await _context.Burger.FindAsync(id);
            if (burger == null)
            {
                return NotFound();
            }
            return Ok(burger);
        }
    }





I tried to modify my routes but without success

【问题讨论】：

标签： .net api controller frameworks entity

【解决方案1】：

GetBurgerByCat 和 GetBurgerById 都使用相同的路由。像这样更改它（虽然这个 API 路由命名不是一个好习惯，但最好使用查询）：

[ApiController]
    [Route("api")]
    public class BurgerController : ControllerBase
    {
        private readonly BurgerContext _context;
        private readonly IConfiguration _configuration;

        public BurgerController(BurgerContext context, IConfiguration configuration)
        {
            _context = context;
            _configuration = configuration;
        }
        
        [HttpGet]        
        public async Task<IActionResult> GetBurger()
        {
            var burger = await _context.Burger.ToListAsync();
            return Ok(burger);
        }
        
        //By category
        [HttpGet("bycat/{cat}")]
        public async Task<IActionResult> GetBurgerByCat(string cat)
        {
            var requete =                
                from b in _context.Burger                    
                join c in _context.Category                
                on b.CategoryId equals c.CategoryId                
                select new { b.BurgerId, b.Name, b.Description, b.Price, c.Category_Name };
            
            if (!string.IsNullOrEmpty(cat))
                requete = requete.Where(p => p.Category_Name.Contains(cat));
            return Ok(requete);

        }
        
        //By Id
        [HttpGet("byuser/{id}")]
        public async Task<IActionResult> GetBurgerById(int id)
        {
            var burger = await _context.Burger.FindAsync(id);
            if (burger == null)
            {
                return NotFound();
            }
            return Ok(burger);
        }
    }

【讨论】：