.Net 6.0 处理跨域的方式

1.方法里添加，允许跨域
HttpContext.Response.Headers.Add("Access-Control-Allow-Origin", "*");

2.方法添加特性，允许跨域
[CustomCorsActionFilterAttribute]

3. program.cs 全局注入，允许跨域
builder.Services.AddCors(policy =>
{
policy.AddPolicy("CorsPolicy", opt => opt
.AllowAnyOrigin()
.AllowAnyHeader()
.AllowAnyMethod()
.WithExposedHeaders("X-Pagination"));
});

app.UseCors("CorsPolicy");

4.过滤器

public class CustomCorsActionFilterAttribute : Attribute, IActionFilter
{

public void OnActionExecuting(ActionExecutingContext context)
{
context.HttpContext.Response.Headers.Add("Access-Control-Allow-Origin", "*");
}

public void OnActionExecuted(ActionExecutedContext context)
{

}
}