此请求有效，但如果提交的请求抛出错误（系统中不存在电子邮件），我会收到CORS策略错误。
CORS策略已阻止从源“http：//localhost：6420”访问位于“https：//my-website.azurewebsites.net/Assign/ByEmail？客户端电子邮件= bademailaddress%40gmail.com和管理器电子邮件=some_mnger%40gmail.com”的XMLHttpRequest：请求的资源上不存在“Access-Control-Allow-Origin”标头。
这是一个Asp.Net Core Web API解决方案。它仅在部署到其Azure环境时才会表现出此行为，而在作为localhost运行时不会表现出此行为。
Program.cs

using Microsoft.Identity.Web;
using System.Configuration;
using Microsoft.Extensions.Configuration;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Cors.Infrastructure;
using wld.admin.api;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
var allowAnyOriginsPolicyName = "_allowAnyOriginsPolicy";
builder.Services.AddCors(corsOptions =>
{
    corsOptions.AddPolicy(name: allowAnyOriginsPolicyName,
        policyBuilder =>
        {
            policyBuilder
            .AllowAnyOrigin()
            .AllowAnyHeader()
            .AllowAnyMethod();
        });
});

// Adds Microsoft Identity platform (Azure AD B2C) support to protect this Api
builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
        .AddMicrosoftIdentityWebApi(options =>
        {
            builder.Configuration.Bind("AzureAdB2C", options);

            options.TokenValidationParameters.NameClaimType = "name";
        },
options => { builder.Configuration.Bind("AzureAdB2C", options); });

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();
app.UseCors(allowAnyOriginsPolicyName);
app.UseAuthentication();
app.UseAuthorization();

app.MapControllers();

var connectionString = builder.Configuration.GetConnectionString("xxxxx_api");

app.Run();

客户代码

<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<button type="button" id="callAssign" onclick="apiGet('Assign/ByEmail', {clientEmail:'bademailaddress@gmail.com', managerEmail:'some_mnger@gmail.com@sendmailtest.com'})">Assign By Email</button>

JS系统

async function apiExec(type, endPoint, params, data)
  {

    var serverAndEndPoint = apiConfig.webApi + endPoint;
    logMessageTime(serverAndEndPoint);
    if(params != null)
    logMessageTime('parameters: ' + JSON.stringify(params));

    getTokenPopup(tokenRequest)
        .then(response => {
            if (response) {
    
                try {
                  const headers = { headers: {"Authorization" : `Bearer ${response.accessToken}`} }

                    
                    // axios.get(serverAndEndPoint,headers)
                  axios({
                      method: type,
                      url: serverAndEndPoint,
                      headers : {"Authorization" : `Bearer ${response.accessToken}`},
                      params : params,
                      data : data
                  })                    
                  .then(response2 => {
                    console.log(response2);
                    console.log(response2.data);
                    logMessageTime(JSON.stringify(response2.data));
                    return response2.data;  
                  }, reject => {
                    console.log("reject");
                    console.log(reject);
                  })
                  .catch(error)         
                  {
                    console.log("error caught in apiExec promise");
                    console.log(error);
                  }
                  //callApi(apiConfig.webApi + methodAndParameters, response.accessToken);
                } catch (error) 
                {
                  console.log("error caught in apiExec");
                    console.log(error);
                }
            }
        });
    }

控制器代码

namespace my.api.Controllers
{
    [Authorize]
    [RequiredScope("tasks.read")]
    [ApiController]
    [Route("[controller]")]
    public class AssignController : ControllerBase
    {
        private readonly ILogger<AssignController> _logger;

        private string _connectionString = "";
        private IConfiguration _configuration = null;

        public AssignController(ILogger<AssignController> logger, IConfiguration configuration)
        {
            _logger = logger;
            _connectionString = configuration.GetConnectionString("xxxxx_api");
            _configuration = configuration;
        }

        [HttpGet]
        [Route("ByEmail")]
        public bool ByEmail(string clientEmail, string managerEmail)
        {
            new ManagerOps(_logger, _configuration).AssignToClientByEmail(clientEmail, managerEmail);
            return true;
        }

    }
}