.NET核心自定义中间件不捕获服务异常

public class ExceptionHandlingMiddleware
{
    private readonly RequestDelegate _next;

    public ExceptionHandlingMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        try
        {
            await _next(context);
        }
        catch (Exception ex)
        {
            // 这里可以记录异常信息
            // 例如：_logger.LogError(ex, "An unhandled exception has occurred.");

            // 设置响应状态码和内容
            context.Response.StatusCode = StatusCodes.Status500InternalServerError;
            context.Response.ContentType = "application/json";

            var response = new
            {
                StatusCode = context.Response.StatusCode,
                Message = "Internal Server Error."
            };

            await context.Response.WriteAsync(JsonSerializer.Serialize(response));
        }
    }
}

// 在Startup.cs中注册中间件
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseMiddleware<ExceptionHandlingMiddleware>();
        app.UseHsts();
    }

    app.UseHttpsRedirection();
    app.UseRouting();
    app.UseAuthorization();

    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllers();
    });
}