注入Kotlin類的不可變構造函數的正確方法

Question

使用Spring + Kotlin聲明不可變構造函數注入類的正確方法是什么？ 目前我有：

@RestController
public class AuthorizationController
{
    @Inject
    lateinit var facebookAuth: FacebookAuthorizationService //Mutable?

    @RequestMapping("/authorization")
    public fun authorization(@RequestParam(value = "network-type", defaultValue = "Facebook") name: String,
                             @RequestParam(value = "oauth-token") oauthToken: String,
                             @RequestParam(value = "oauth-token-secret",
                                     required = false) oauthTokenSecret: String?): Authorization
    {
        //TODO: Handle other network types
        return facebookAuth.authorization(oauthToken)
    }
}

我想facebookAuth屬性是不可變的。

Answer 1

在這里與Kotlin沒有多少經驗，但我認為必須完成

public class AuthorizationController @Inject constructor(private val facebookAuth: FacebookAuthorizationService) {

    ...

}