对于学校,我们必须使用.NET实体核心框架编写自己的WebApi。我已经编写了api,但是当我试图用它挥舞时,它总是返回HTTP 500错误:内部服务器错误。我下载了Fiddler以开始调试,并在我的存储库中遇到了循环依赖项错误,但我不知道会在哪里发生。
接口(用于模拟测试)
public interface IVisitorRepository
{
Visitor GetBy(string email);
void AddVisitor(Visitor visitor);
void SaveChanges();
}
具体课
public class VisitorRepository : IVisitorRepository
{
private readonly ApplicationDbContext _context;
private readonly DbSet<Visitor> _visitors;
public VisitorRepository(ApplicationDbContext context, IVisitorRepository visitorRepository)
{
_context = context;
_visitors = _context.Visitors;
}
public void AddVisitor(Visitor visitor)
{
_visitors.Add(visitor);
}
public Visitor GetBy(string email)
{
return _visitors.SingleOrDefault(v => v.Email == email);
}
public void SaveChanges()
{
_context.SaveChanges();
}
}
我已经在我的管道中确定了范围。
这是一个基于JWT令牌的登录和注册api(这是我们需要做的),这是我的register方法(我正在测试的方法)
[AllowAnonymous]
[HttpPost("register")]
public async Task<ActionResult<String>> Register(RegisterDTO model)
{
IdentityUser user = new IdentityUser { UserName = model.Email, Email = model.Email };
Visitor visitor = new Visitor(model.FirstName + " " + model.LastName, model.Email, model.PhoneNumber, model.Country);
var result = await _userManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
_visitorRepository.AddVisitor(visitor);
_visitorRepository.SaveChanges();
string token = GetToken(user);
return Created("", token);
}
return BadRequest();
}
例外:
InvalidOperationException:检测到类型为'DigitizedApi.Models.Repositories.IVisitorRepository'的服务的循环依赖关系。 DigitizedApi.Models.Repositories.IVisitorRepository(DigitizedApi.Data.Repositories.VisitorRepository)-> DigitizedApi.Models.Repositories.IVisitorRepository
最佳答案
问题是您的VisitorRepository
(实现IVisitorRepository
)对IVisitorRepository
本身有依赖性。
实际上应该如下:
public class VisitorRepository : IVisitorRepository
{
private readonly ApplicationDbContext _context;
private readonly DbSet<Visitor> _visitors;
public VisitorRepository(ApplicationDbContext context)
{
_context = context;
_visitors = _context.Visitors;
}
.........
}