vue 获取不到 .net core 3.0 返回的 json 数据

悬赏园豆：10 [已解决问题] 解决于 2019-10-24 12:19

后台数据是用普通Controller提供的json数据，已经设置跨域
services.AddCors(options =>
options.AddPolicy("any",
p => p.AllowAnyOrigin())
);

        app.UseCors();

直接把地址在浏览器中输入能得到数据，但是在vue中请求数据却出现

服务器上日志发现请求已经进来了,原来2.0的时候可以获取到数据，升级到3.0出现的不能获取到数据

.net core vue

问题补充：

改用默认的 webapi接口发现一个
[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()
    {
        var rng = new Random();
        return Enumerable.Range(1, 5).Select(index => new WeatherForecast
        {
            Date = DateTime.Now.AddDays(index),
            TemperatureC = rng.Next(-20, 55),
            Summary = Summaries[rng.Next(Summaries.Length)]
        })
        .ToArray();
    }

    [HttpGet("index")]
    public IActionResult Get(string id)
    {
        var data = new
        {
            success = true,
            message = "ok"
        };
        return Ok(data);
    }
}

调用上面自带的方法可以获取到数据，
调用下面的json格式的无法获取到数据