首次登录时在Android Kotlin上抛出401未授权访问

interface AuthService {
    @POST("login")
    suspend fun login(@Body request: LoginRequest): Response<AuthResponse>
}

data class LoginRequest(val username: String, val password: String)
data class AuthResponse(val token: String)

fun login(username: String, password: String) {
    val retrofit = Retrofit.Builder()
        .baseUrl("https://your-api-url.com/")
        .addConverterFactory(GsonConverterFactory.create())
        .build()

    val authService = retrofit.create(AuthService::class.java)

    try {
        val response = authService.login(LoginRequest(username, password))
        if (response.isSuccessful) {
            val authToken = response.body()?.token
            // 保存令牌并继续操作
        } else {
            when (response.code()) {
                401 -> println("未授权访问")
                else -> println("其他错误: ${response.code()}")
            }
        }
    } catch (e: Exception) {
        println("网络错误: ${e.message}")
    }
}