Ktor 服务器在 postman 中响应 406 错误

我正在做一个后端服务器，在测试 /register 路由时遇到一些问题。 我认为我已经正确配置了所有内容，但是当我尝试在 Postman 上执行 POST 方法时，它给了我 406 错误，这是我正在使用的链接“http://127.0.0.1:8080/v1/users/register”我连接到了 PostGreSQL DB，在 Postman 上发出请求后，我什至检查了数据库，但那里什么也没有，在这个路由部分之前我已经使用 Ktor 创建了一个表。

这是我的路线文件

fun Route.userRoutes(db: repo, jwtService: JwtService, hashFunction: (String) -> String) {
    route("/v1/users") {
        post("/register") {
            try {
                val registerRequest = call.receive<RegisterRequest>()

                // Handle registration logic
                val user = User(registerRequest.email, hashFunction(registerRequest.password), registerRequest.name)
                db.addUser(user)
                call.respond(HttpStatusCode.OK, SimpleResponse(true, jwtService.generateToken(user)))

            } catch (e: Exception) {
                // Handle registration errors
                call.respond(HttpStatusCode.BadRequest, SimpleResponse(false, "Missing Some Fields or Registration Failed"))
            }
        }

注册班级

data class RegisterRequest(
    val email:String,
    val name:String,
    val password:String
)

简单响应类

package com.example.data.model

data class SimpleResponse(
    val success:Boolean,
    val message:String
)

当我尝试在 POSTMAN 上发送 POST 时，这就是 IntelliJ 控制台上显示的内容

2023-12-29 21:42:28.514 [eventLoopGroupProxy-4-1] TRACE io.ktor.server.routing.Routing - Trace for [v1, users, register]
/, segment:0 -> SUCCESS @ /
  /session, segment:0 -> FAILURE "Selector didn't match" @ /session
  /json, segment:0 -> FAILURE "Selector didn't match" @ /json
  /, segment:0 -> SUCCESS @ /
    /(method:GET), segment:0 -> FAILURE "Selector didn't match" @ /(method:GET)
  /v1, segment:1 -> SUCCESS @ /v1
    /v1/users, segment:2 -> SUCCESS @ /v1/users
      /v1/users/register, segment:3 -> SUCCESS @ /v1/users/register
        /v1/users/register/(method:POST), segment:3 -> SUCCESS @ /v1/users/register/(method:POST)
      /v1/users/login, segment:2 -> FAILURE "Selector didn't match" @ /v1/users/login
Matched routes:
  "" -> "v1" -> "users" -> "register" -> "(method:POST)"
Route resolve result:
  SUCCESS @ /v1/users/register/(method:POST)
2023-12-30 21:04:26.349 [eventLoopGroupProxy-4-1] TRACE i.k.server.engine.DefaultTransform - No Default Transformations found for class io.ktor.utils.io.ByteBufferChannel and expected type TypeInfo(type=class com.example.data.model.RegisterRequest, reifiedType=class com.example.data.model.RegisterRequest, kotlinType=com.example.data.model.RegisterRequest) for call /v1/users/register
2023-12-30 21:04:26.375 [eventLoopGroupProxy-4-1] TRACE i.k.s.p.c.ContentNegotiation - No suitable content converter found for request type class com.example.data.model.RegisterRequest
2023-12-30 21:04:26.384 [eventLoopGroupProxy-4-1] TRACE io.ktor.server.sessions.Sessions - Sending session data for /v1/users/register: MY_SESSION
2023-12-30 21:04:26.407 [eventLoopGroupProxy-4-1] TRACE i.k.s.p.c.ContentNegotiation - No suitable content converter found for response type class com.example.data.model.SimpleResponse and body SimpleResponse(success=false, message=Missing Some Fields)

请求的正文是这样的

{
“姓名”：“约翰”，
“电子邮件”：“abcd@gmail.com”，
“密码”：“通过”
}

fun Application.configureSerialization() {

    install(ContentNegotiation) {

            Json {
                prettyPrint = true
                isLenient = true
                encodeDefaults = false
            }

    }

    routing {
        get("/json/gson") {
            call.respond(mapOf("hello" to "world"))
        }
    }
}

我尝试过的：

I have checked the headers tab on Postman and I have the Content-Type application/json and also the Accept "/"

The dependencies on Gradle I used latest.release

This is just for a simple Note App for android.

The problem seems to be because the RegisterRequest and SimpleResponse I think.

This is my first time using Ktor so sorry if I'm a bit behind in some aspects. Thank you for your time