IE浏览器的Intranet局域网设置默认是可以跨域访问的.chrome就不可以.
这里说的跨域是指javascript代码不能跨域, 当然你在后端controller代码里用HttpClient.GetAsync(url) 这样去请求数据是不存在跨域问题的.
1. 在Startup.cs的ConfigureServices方法
public void ConfigureServices(IServiceCollection services)
{
string[] origins = Configuration.GetValue<string>("CorsOrigin").Split(","); //从appsettings.json读取
services.AddCors(c =>
c.AddPolicy("AllowSpecificOrigin", policy =>
{
policy.WithOrigins(origins)
.WithMethods("GET", "POST", "PUT", "DELETE"); })); }
2. 在startup.cs的Configure方法里
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
app.UseCors("AllowSpecificOrigin");
}
3. appsetting.json里增加一个
"CorsOrigin": "http://www.example1.com,http://www.example2.com",