要实现基于数据库权限的授权,可以按照以下步骤进行:
创建一个 ASP.NET Core Web API 项目。
添加所需的 NuGet 包:Microsoft.EntityFrameworkCore、Microsoft.EntityFrameworkCore.SqlServer、Microsoft.EntityFrameworkCore.Tools。
创建一个数据库上下文类,继承自 DbContext,并定义数据库中的实体类和关系。例如:
public class ApplicationDbContext : DbContext
{
public DbSet Users { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
optionsBuilder.UseSqlServer("your_connection_string");
}
}
public class User
{
public int Id { get; set; }
public string Name { get; set; }
public string Role { get; set; }
}
public class AuthorizationService
{
private readonly ApplicationDbContext _context;
public AuthorizationService(ApplicationDbContext context)
{
_context = context;
}
public bool IsUserAuthorized(int userId, string role)
{
var user = _context.Users.FirstOrDefault(u => u.Id == userId);
return user != null && user.Role == role;
}
}
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext();
services.AddScoped();
// 其他配置...
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
// 其他配置...
app.UseAuthorization();
// 其他配置...
}
[ApiController]
[Route("api/[controller]")]
public class UserController : ControllerBase
{
private readonly AuthorizationService _authorizationService;
public UserController(AuthorizationService authorizationService)
{
_authorizationService = authorizationService;
}
[HttpGet("{id}")]
public IActionResult GetUser(int id)
{
if (!_authorizationService.IsUserAuthorized(id, "admin"))
{
return Forbid();
}
// 根据 id 获取用户信息并返回
return Ok(user);
}
}
通过以上步骤,你就可以实现基于数据库权限的授权了。当用户请求控制器中的某个动作时,会先检查用户的权限,如果没有权限,则返回 403 Forbidden。