我刚刚使用 React 模板创建了一个 ASP.NET Core Web API。
我写了这段代码
let options = {
method: 'GET'
}
const response = await fetch("https://localhost:44482/WeatherForecast/Get", options);
但是当我启动我的应用程序时，出现错误
304 未修改
以及回复中的此页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="theme-color" content="#000000">
<base href="/" />
<link rel="manifest" href="/manifest.json">
<link rel="shortcut icon" href="/favicon.ico">
<title>My App</title>
<script defer src="/static/js/bundle.js"></script></head>
<body>
<noscript>
You need to enable JavaScript to run this app.
</noscript>
<div id="root"></div>
</body>
</html>
我做错了什么？
我没有更改
program.cs我在 Postman 中也遇到了同样的错误
这是我的控制器
[ApiController]
[Route("[controller]")]
public class WeatherForecastController : ControllerBase
{
private static readonly string[] Summaries = new[]
{
"Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
};
private readonly ILogger<WeatherForecastController> _logger;
public WeatherForecastController(ILogger<WeatherForecastController> logger)
{
_logger = logger;
}
[HttpGet]
public IEnumerable<WeatherForecast> Get()
{
return Enumerable.Range(1, 5).Select(index => new WeatherForecast
{
Date = DateTime.Now.AddDays(index),
TemperatureC = Random.Shared.Next(-20, 55),
Summary = Summaries[Random.Shared.Next(Summaries.Length)]
})
.ToArray();
}
}
using GoalJourney.Data;
using GoalJourney.Services;
using GoalJourney.Services.Interfaces;
var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
builder.Services.AddControllersWithViews();
builder.Services.AddTransient<IGoalService, GoalService>();
builder.Services.AddSingleton<GoalDataContext>();
var app = builder.Build();
// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.MapControllerRoute(
name: "default",
pattern: "{controller}/{action=Index}/{id?}");
app.MapFallbackToFile("index.html");
app.Run();
为了解决这个问题，我将站点和 Web api 部分分开。
我创建了一个新的 Web API 项目并移动了控制器、模型和其他服务器内容。
我还修复了 CORS 问题，因为我将从 localhost:44482 获取到 localhost:7005。
builder.Services.AddCors(options =>
{
options.AddPolicy( "AllowAll",
policy =>
{
policy.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader();
});
});
app.UseCors("AllowAll");