asp.net core webapi 直接浏览器访问web api访问成功,但是用js跨域访问就访问不到了?
Controller代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Cors;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;
namespace WebApplication2.Controllers
{
[Route("api/[controller]")]
[EnableCors("any")]
[ApiController]
public class TestController : Controller
{
// GET api/test/5
[HttpGet("{id}")]
[EnableCors("any")]
public string Get(int id)
{
HttpContext.Session.SetString("name", "中文");
string result = HttpContext.Session.GetString("name");
return result.ToString();
}
// GET api/test
[HttpGet]
public string Get()
{
try
{
string result = HttpContext.Session.GetString("name");
return "name:"+result.ToString();
}
catch (Exception ex)
{
return ex.ToString();
}
}
}
}
Startup代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
namespace WebApplication2
{
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)
{
//Session 保存到内存
services.AddDistributedMemoryCache();
services.AddSession();
//配置跨域处理
services.AddCors(options =>
{
options.AddPolicy("any", builder =>
{
builder.AllowAnyOrigin() //允许任何来源的主机访问
.AllowAnyMethod()
.AllowAnyHeader()
.AllowCredentials();//指定处理cookie
});
});
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
}
// 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.UseSession();
app.UseHttpsRedirection();
app.UseMvc();
}
}
}