简体繁体 English

在 Java Play Framework (2.5.x) 中操作新创建的 MySQL DB 的正确方法是什么？

[英]What is the right way to operate on a newly created MySQL DB within Java Play Framework (2.5.x)?

原文 2016-10-03 09:20:50 6 1 java/ mysql/ database/ jpa/ playframework

I have already created the DB which has no tables so far & have successfully connected it with Play.我已经创建了迄今为止没有表的数据库并已成功将其与 Play 连接。 But what is the right way to create the tables from within Play?但是在 Play 中创建表格的正确方法是什么？ I was going to proceed with Evolutions script but their documentation mentions that evolutions is to be used while updating the DB.我打算继续使用 Evolutions 脚本，但他们的文档提到在更新数据库时要使用进化。

In Django I have seen people defining their tables in a models file. 在 Django 中，我看到人们在模型文件中定义他们的表。 Is there any similar mechanism in Play. Play中有没有类似的机制。 If so, how? 如果是这样，如何？

Does JPA have anything to do with all this? JPA 与这一切有关系吗？ Again, I have read their documentation on this. 同样，我已经阅读了他们关于此的文档。 It explains it in connection with Hibernate. 它解释了它与 Hibernate 的关联。 Is an ORM layer absolutely necessary? ORM 层是绝对必要的吗？ Help me out here! 帮帮我！

1 个解决方案

So a user answered this question and then removed it.所以一个用户回答了这个问题，然后将其删除。 Nevertheless he suggested to use Ebean which manages the database through evolutions.尽管如此，他还是建议使用 Ebean，它通过进化来管理数据库。

The github link posted was: https://github.com/playframework/play-ebean-example 发布的 github 链接是： https : //github.com/playframework/play-ebean-example

It cleared up a few things and if someone faces the same problem, I hope this helps. 它解决了一些问题，如果有人遇到同样的问题，我希望这会有所帮助。