应用程序在没有读取整个请求主体的情况下完成,.net core 2.1.1

Question

我创建了一个用户注册控制器来注册具有存储库设计模式的用户.我的控制器看起来像这样.

[Route("api/[controller]")]
    public class AuthController : Controller
    {
        private readonly IAuthRepository _repo;
        public AuthController(IAuthRepository repo)
        {
            _repo = repo;
        }

        [AllowAnonymous]
        [HttpPost("register")]
        public async Task<IActionResult> Register([FromBody] UserForRegisterDto userForRegisterDto){
            // validate request
            if(!ModelState.IsValid)
            return BadRequest(ModelState);

            userForRegisterDto.Username = userForRegisterDto.Username.ToLower();

            if(await _repo.UserExists(userForRegisterDto.Username)) 
            return BadRequest("Username is already taken");

            var userToCreate = new User{
                Username = userForRegisterDto.Username
            };

            var createUser = await _repo.Register(userToCreate, userForRegisterDto.Password);

            return StatusCode(201);
        }
    }

当我使用Postman发送请求时,它会向我提供404未找到的状态代码,并且API会在不读取整个正文的情况下报告请求已完成.

我在Postman的请求看起来像这样.

我已经使用数据传输对象(DTO)封装的数据,我删除了UserForRegisterDto,并试图使用string username和string password,如下所示但没有奏效.

public async Task<IActionResult> Register([FromBody] string username, string password)

UserForRegisterDto 看起来像这样.

 public class UserForRegisterDto
    {
        [Required]
        public string Username { get; set; }

        [Required]
        [StringLength(8, MinimumLength =4, ErrorMessage = "You must specify a password between 4 and 8 characters.")]
        public string Password { get; set; }
    }

我为此尝试了许多在线解决方案,但到目前为止还没有解决我的问题.请帮我解决问题,谢谢你提前.我在Ubuntu 18.04上运行这个API

编辑: Startup.cs

public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<DataContext>(x => x.UseSqlite(Configuration.GetConnectionString("DefaultConnection")));
            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

            services.AddCors();
            services.AddScoped<IAuthRepository, AuthRepository>();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseHsts();
            }
            app.UseCors(x => x.AllowAnyHeader().AllowAnyMethod().AllowAnyOrigin().AllowCredentials());
            app.UseMvc();
        }
    }

Answer 1

the application completed without reading the entire request body当客户端发送不满足服务器要求的请求时,通常会发生错误信息.换句话说,它恰好在进入操作之前发生,导致您无法通过操作体方法中的断点对其进行调试.

例如,假设服务器上有一个action方法:

[Route("api/[controller]")]
[ApiController]
public class DummyController : ControllerBase
{
    [HttpPost]
    public DummyDto PostTest([FromBody] DummyDto dto)
    {
        return dto;
    }
}

这DummyDto是一个用于保存信息的虚拟类:

public class DummyDto 
{
    public int Id { get; set; }
}

当客户端发送请求时,有效负载格式不正确

例如,以下发布请求,没有Content-Type: application/json标题:

POST https://localhost:44306/api/test HTTP/1.1
Accept : application/json

{ "id":5 }

将导致类似的错误信息:

Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request starting HTTP/1.1 POST http://localhost:44306/api/test  10
Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request finished in 1.9319ms 404 
Microsoft.AspNetCore.Server.Kestrel:Information: Connection id "0HLGH8R93RPUO", Request id "0HLGH8R93RPUO:00000002": the application completed without reading the entire request body.

并且来自服务器的响应将是404:

HTTP/1.1 404 Not Found
Server: Kestrel
X-SourceFiles: =?UTF-8?B?RDpccmVwb3J0XDIwMThcOVw5LTFcU08uQXV0aFJlYWRpbmdXaXRob3V0RW50aXRlQm9keVxBcHBcQXBwXGFwaVx0ZXN0?=
X-Powered-By: ASP.NET
Date: Mon, 03 Sep 2018 02:42:53 GMT
Content-Length: 0

至于你描述的问题,我建议你检查以下列表:

1. 邮递员发送标题为Content-Type: application/json？的请求？确保您已检查标题
2. 如果step1不起作用,请单击code以显示向服务器发送请求时确切发送的内容.

Answer 2

在本地进行调试时，在新的ASP.NET Core 2.1服务中发生了这种情况，因为我在Startup.Configure中进行了以下操作：

app.UseHttpsRedirection();

我在本地调试时停用了此设置：

if (env.IsDevelopment())
{
     app.UseDeveloperExceptionPage();
}
else
{
     app.UseHttpsRedirection();
}