我正在尝试在我的ASP上启用跨起源资源共享。NET核心Web API,但我卡住了。
EnableCors属性接受字符串类型的policyName作为参数:
// Summary:
// Creates a new instance of the Microsoft.AspNetCore.Cors.Core.EnableCorsAttribute.
//
// Parameters:
// policyName:
// The name of the policy to be applied.
public EnableCorsAttribute(string policyName);
policyName是什么意思,如何在ASP上配置CORS。NET核心Web API?
特别是在dotnet核心2.2中,你必须改变SignalR
.WithOrigins (http://localhost: 3000)或
.SetIsOriginAllowed(isOriginAllowed: _ => true) //所有源
用.AllowCredentials()代替。allowanyorigin ()
https://trailheadtechnology.com/breaking-change-in-aspnetcore-2-2-for-signalr-and-cors/
https://github.com/aspnet/AspNetCore/issues/4483
这涵盖每个端点。如果你想阻止某个端点,使用这个注释[DisableCors]
这里描述得很好。
https://learn.microsoft.com/en-us/aspnet/core/security/cors?view=aspnetcore-5.0
在app.authentication()和app.routing()之间添加app.usecors(policyName)在Configure方法中。
在configureService方法中
services.AddCors(options => options.AddPolicy(name: mypolicy, builder => { builder.AllowAnyHeader().AllowAnyMethod().AllowAnyOrigin(); }));
在每个控制器中添加[EnableCors("mypolicy")]
[EnableCors("mypolicy")]
[Route("api/[controller]")] [ApiController]
public class MyController : ControllerBase
eg:-
namespace CompanyApi2
{
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this //method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddCors(options =>
options.AddPolicy(name: mypolicy,
builder =>
{
builder.AllowAnyHeader().AllowAnyMethod()
.AllowAnyOrigin();
})); //add this
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
services.AddScoped<IDatarepository, DatabaseRepository>();
}
public string mypolicy = "mypolicy";
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseHsts();
}
app.UseCors(mypolicy); //add this
app.UseHttpsRedirection();
app.UseMvc();
}
}
}