如何在相同解决方案的asp.net核心Razor页面中使用单独的asp.net核心web api

Question

我使用Asp.net Core Razor Page作为我的webApp和asp.net Core api项目作为我的api服务单独...现在我如何在WebApp中使用apis ...谢谢

Answer 1

If the two projects have different originals, you need to enable Cross-Origin Requests (CORS) in ASP.NET Core .

Then you could use ajax or fetch api to call the web api in Razor Pages.

For example, assume Razor Pages has an original https://localhost:44304 and Web Api https://localhost:44362

1.In Web Api project startup.cs

ConfigureService:

services.AddCors(options =>
        {
            options.AddPolicy("MyPolicy",
            builder =>
            {
                builder.WithOrigins("https://localhost:44304")
                .AllowAnyHeader()
                .AllowAnyMethod();
            });
        });

Configure:

app.UseCors("MyPolicy");
app.UseHttpsRedirection();

2.Razor Pages Index.cshtml:

<div>
<input type="button" value="Test"
        onclick="requestVal('https://localhost:44362/api/values')" />
<span id='result'></span>
</div>

<script>
function requestVal(uri) {
    const resultSpan = document.getElementById('result');

    fetch(uri)
        .then(response => response.json())
        .then(data => resultSpan.innerText = data)
        .catch(error => resultSpan.innerText = 'See F12 Console for error');
}
</script>

3.Click the button and display result