访问TypeSafe配置中的数组元素

Given a nested JSON as configuration, like:

给定嵌套的JSON作为配置，如：

{
    app: {
        id: "app1"
        instances: 2,
        servers: [
            { host: "farm1.myco.com", port: 9876 }
            { host: "farm2.myco.com", port: 9876 }
        ]
    }
}

When using typeSafe config, is it possible to address elements of an array directly in a path?

使用typeSafe配置时，是否可以直接在路径中寻址数组的元素？

At the moment we need to do something like the following, which is kind of verbose:

目前我们需要做类似以下的事情，这有点冗长：

val servers = config.getObjectList("app.servers")
val server = servers.get(0).toConfig
val host = server.getString("host")
val port = server.getInt("port")

Something like this would be ideal:

这样的事情是理想的：

val host = config.getString("app.servers.0.host") ?

val host = config.getString（“app.servers.0.host”）？

Does the TypeSafe API supports something like this?

TypeSafe API是否支持这样的内容？

2 个解决方案

#1

This seems not possible so far.
See https://github.com/typesafehub/config/issues/30

到目前为止这似乎是不可能的。请参阅https://github.com/typesafehub/config/issues/30

#2

Implement a helper function that transforms the object into something a little more manageable. This is what I ended up using.

实现一个帮助函数，将对象转换为更易于管理的东西。这就是我最终使用的。

def toList(jList:java.util.List[_ <: ConfigObject]) :  List[Config] = {
    val l = jList.asScala.toList
    val slConfig = l.map(item => {
        item.toConfig
    })

   slConfig
}

The use of that function would look like

使用该功能看起来像

val servers = toList(objectList)

for(server <- servers) {
    println(server.getString("host"))
    println(server.getString("port"))
}

#1