java Playframework对于onStart的GlobalSettings弃用 [英] java Playframework GlobalSettings deprecation for onStart
问题描述
我有一个恼人的问题，Playframwork已弃用 GlobalSettings 问题，我想将我的conde移到 onStart 中以建议的方式，但实际上我不能完成这个，文档没有意义，我不知道如何解决这个问题，我花了几天时间试图让它没有运气！
I have annoying issue with Playframwork deprecated GlobalSettings issue, I want to move my conde inside onStart to suggested way, but Actually I can't get this done, the documentation make no sense, and I have no idea how to solve this, I spent days and days trying to make it with no luck !
https：// www。 playframework.com/documentation/2.5.x/GlobalSettings
我只想运行初始数据库方法
Simply I want to run initial database method
private void initialDB() {
UserService userService = play.Play.application().injector().instanceOf(UserService.class);
if (userService.findUserByEmail("email@company.com") == null) {
String email = "email@company.com";
String password = "1234";
String fullName = "My Name";
User user = new User();
user.password = BCrypt.hashpw(password, BCrypt.gensalt());
user.full_name = fullName;
user.email = email;
user.save();
}
}
这是在 onStart 中的方法全局扩展GlobalSettings java文件，我试图将其解压缩到外部模块但没有运气。
This was inside onStart method in Global extends GlobalSettings java file, I tried to extract it to external module but no luck.
public class GlobalModule extends AbstractModule {
protected void configure() {
initialDB();
}
}
我在Scala中找到了一些解决方案，不知道这是怎么回事可以在java中，但我没有时间去学习它，除此之外我也不喜欢它。
I found some solutions in Scala and no idea how this can be in java, but I have no time to learn it, beside that I don't like it too.
推荐答案
你需要两个类 - 一个用于处理初始化，一个用于注册绑定。
You need two classes - one to handle the initialization, and a module to register the binding.
初始化代码：
@Singleton
public class OnStartup {
@Inject
public OnStartup(final UserService userService) {
if (userService.findUserByEmail("email@company.com") == null) {
String email = "email@company.com";
String password = "1234";
String fullName = "My Name";
User user = new User();
user.password = BCrypt.hashpw(password, BCrypt.gensalt());
user.full_name = fullName;
user.email = email;
user.save();
}
}
}
模块：
public class OnStartupModule extends AbstractModule {
@Override
public void configure() {
bind(OnStartup.class).asEagerSingleton();
}
}
最后，将模块添加到 application.conf 。
play.modules.enabled += "com.example.modules.OnStartupModule"
通过使单例急切，它将在应用程序启动时运行。
By making the singleton eager, it will run when the application is starting up.
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