C# Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1] 执行请求时发生未处理的异常

Posted 2023-03-16

【中文标题】C# Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1] 执行请求时发生未处理的异常

【英文标题】：C# Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1] An unhandled exception has occurred while executing the request

【发布时间】：2022-01-17 02:39:48

【问题描述】：

我在这段代码中需要帮助，有些错误是不对的，哈哈……我正在尝试在 InMemory 数据库中运行，但没有成功。我正在使用

Microsoft.AspNetCore.App 5.0.12

Microsoft.AspNetCore.App 6.0.0

Microsoft.NETCore.App 5.0.12

Microsoft.NETCore.App 6.0.0

Microsoft.WindowsDesktop.App 5.0.12

Microsoft.WindowsDesktop.App 6.0.0

[错误图片] https://i.stack.imgur.com/5tFrN.jpg

按照下面的代码进行

using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Shop.Data;
using Shop.Models;

//Endpoint = URL
//http://localhost:5000
//https://localhost:5001

[Route("categories")]
public class CategoryController : ControllerBase

    [HttpGet]
    [Route("")]
    public ActionResult<List<Category>> Get()
    
        return new List<Category>();
    

    [HttpGet]
    [Route("id:int")]
    public ActionResult<Category> GetById(int id)
    
        return new Category();
    


    [HttpPost]
    [Route("")]
    public async Task<ActionResult<List<Category>>> Post(
        [FromBody] Category model,
        [FromServices] DataContext context)
    
        if (!ModelState.IsValid)
            return BadRequest(ModelState);

        context.Categories.Add(model);
        await context.SaveChangesAsync();
        return Ok(model);
    


    [HttpPut]
    [Route("id:int")]
    public ActionResult<List<Category>> Put(int id, [FromBody] Category model)
    
        if (id != model.Id)
            return NotFound(new  message = "Categoria não encontrada" );

        if (!ModelState.IsValid)
            return BadRequest(ModelState);

        return Ok(model);
    

    [HttpDelete]
    [Route("id:int")]
    public ActionResult<List<Category>> Delete()
    
        return Ok();
    

【参考方案1】：

对不起，我安装了 Swashbuckle.AspeNetCore.Swagger 5.0.0 并在 Startup.cs 中调用它。 我将两者都删除了，效果很好。