netcore3.1配置webapi Controller打开报错
问题描述:刚配置好了swagger,沿用netcore2.2的配置继续在浏览器打开api控制器,结果报错了。。。
解决方法:从路由层面查找了半天原因,无果,最后把api页面中的跨域设置去掉后正常了,看来和跨越设置有关,继续查找,原来是注册时候顺序导致的问题
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline. public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { app.UseStaticFiles(); app.UseCookiePolicy(); app.UseRouting(); //允许跨域 位置和必须放对,否则加载出错 app.UseCors("any"); app.UseEndpoints(endpoints => endpoints.MapDefaultControllerRoute()); //启用中间件服务生成Swagger作为JSON终结点 app.UseSwagger(); //启用中间件服务对swagger-ui,指定Swagger JSON终结点 app.UseSwaggerUI(c => { c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1"); }); var log = LogManager.GetLogger(repository.Name, typeof(Startup)); log.Info("Start Runing"); }
跨域设置加载必须放到UseRouting和UseEndpoints中间