java Playframework GlobalSettings 弃用 onStart [英] java Playframework GlobalSettings deprecation for onStart
问题描述
我在 Playframework 已弃用的 GlobalSettings 问题上遇到了烦人的问题，我想将 onStart 中的 conde 移动到建议的方式，但实际上我无法完成此操作，文档毫无意义，我不知道如何解决这个问题，我花了几天又几天的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 Global extends GlobalSettings java 文件中的 onStart 方法中，我试图将它提取到外部模块，但没有成功.
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，不知道在 Java 中如何实现，但我没有时间学习它，此外我也不喜欢它.
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
您需要两个类 - 一个用于处理初始化，一个模块用于注册绑定.
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，将您的模块添加到 application.conf.
Finally, add your module to 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.
这篇关于java Playframework GlobalSettings 弃用 onStart的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
