要允许所有的HttpGet请求,可以使用ASP.NET Core中的策略系统。以下是一个示例代码,该代码允许所有的HttpGet请求通过:
首先,需要在Startup.cs文件中的ConfigureServices方法中添加所需的策略:
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
services.AddAuthorization(options =>
{
options.AddPolicy("AllowGetRequests",
policy => policy.Requirements.Add(new HttpMethodRequirement(HttpMethod.Get)));
});
// 注册策略处理程序
services.AddSingleton();
}
接下来,需要创建一个自定义的策略要求类,用于指定所需的请求方法:
using System.Net.Http;
using Microsoft.AspNetCore.Authorization;
public class HttpMethodRequirement : IAuthorizationRequirement
{
public HttpMethod HttpMethod { get; }
public HttpMethodRequirement(HttpMethod httpMethod)
{
HttpMethod = httpMethod;
}
}
然后,创建一个自定义的策略处理程序类,用于验证请求的方法是否符合要求:
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc.Filters;
public class HttpMethodAuthorizationHandler : AuthorizationHandler
{
protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, HttpMethodRequirement requirement)
{
var httpMethod = context.Resource as HttpContext?
.Request.Method;
if (httpMethod != null && httpMethod.Equals(requirement.HttpMethod.Method, System.StringComparison.OrdinalIgnoreCase))
{
context.Succeed(requirement);
}
return Task.CompletedTask;
}
}
最后,在需要应用该策略的控制器或操作方法上使用[Authorize]特性,并指定所需的策略名称:
[ApiController]
[Route("api/[controller]")]
public class TestController : ControllerBase
{
[HttpGet]
[Authorize(Policy = "AllowGetRequests")]
public IActionResult Get()
{
return Ok("Get request allowed");
}
}
现在,所有的HttpGet请求将被允许通过。如果要允许其他请求方法,只需在策略定义中添加相应的要求即可。
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