如何在Play中组织Java和Scala代码？

debugcn 发表于 Dev

030

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解剖play-java和play-scala如下所示：

ls project-*/app
...-java/app:
controllers  filters  Filters.java  Module.java  services  views

...-scala/app:
controllers  filters  Filters.scala  Module.scala  services  views

根据此文档：

您还可以选择使用SBT和Maven使用的默认布局。请注意，此布局是实验性的，可能会出现问题。为了使用此布局，必须禁用布局插件并为twirl模板设置显式监视：

build.sbt                  → Application build script
src                        → Application sources
 └ main                    → Compiled asset sources
    └ java                 → Java sources
       └ controllers       → Java controllers
       └ models            → Java business layer
    └ scala                → Scala sources
       └ controllers       → Scala controllers
       └ models            → Scala business layer
    └ resources            → Configurations files and other non-compiled resources (on classpath)
       └ application.conf  → Main configuration file
       └ routes            → Routes definition

讨论

根据这个答案，应该结合使用Java和Scala文件吗？例如：

合并

...-java/app/controllers:
AsyncController.java  CountController.java  HomeController.java

...-scala/app/controllers:
AsyncController.scala  CountController.scala  HomeController.scala

至

.../app/controllers
AsyncController.java  CountController.java  HomeController.java
AsyncController.scala  CountController.scala  HomeController.scala

这是将Java和Scala类组合在一起的Play解剖，还是应该在app / controllers文件夹中创建java和scala目录？

routes驻留在scala和java项目中的文件是相同的：

# Routes
# This file defines all application routes (Higher priority routes first)
# ~~~~

# An example controller showing a sample home page
GET     /                           controllers.HomeController.index
# An example controller showing how to use dependency injection
GET     /count                      controllers.CountController.count
# An example controller showing how to write asynchronous code
GET     /message                    controllers.AsyncController.message

# Map static resources from the /public folder to the /assets URL path
GET     /assets/*file               controllers.Assets.versioned(path="/public", file: Asset)

托马斯·勒霍克斯

只需将您的controllers和models文件夹放入一个app文件夹中，然后将scala和Java文件都放入其中。

build.sbt            → Application build script
app                  → Application sources
 └ controllers       → controllers (java or scala)
 └ models            → business layer (java or scala)
 └ views             
public
conf
 └ application.conf  → Main configuration file
 └ routes            → Routes definition

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