blocks|key|1945733|text|试试Play.application().configuration().getString("your.key")|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1945734|正如注释(nico_ekito)中所指出的，请使用play.Play而不是play.api.Play。play.api.Play是用于scala控制器的(参见Marcus+biesior+Biesioroff的评论)|1945735|此外，play在幕后使用https://github.com/typesafehub/config，因此它还可以提供一些见解。|1945736|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/typesafehub/config^0|2|1K|0|P|9|11|D|1F|D|0|C|11|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|J|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]]]

Try <code>Play.application().configuration().getString("your.key")</code>

As noted in the comment (nico_ekito), please use <code>play.Play</code> and not <code>play.api.Play</code>. <code>play.api.Play</code> is for scala controllers (see comment by Marcus biesior Biesioroff)

Additionally, play uses <a href="https://github.com/typesafehub/config">https://github.com/typesafehub/config</a> under the hood so it can also provide some insights.

blocks|key|1945789|text|由于Play+2使用了Typesafe配置库，因此我在application.conf中访问了我的var，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1945790|ConfigFactory.load().getString("my.var");|code-block|syntax|javascript|1945791|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Since Play 2 uses the Typesafe config library, I accessed my vars in application.conf like this :

<pre><code>ConfigFactory.load().getString("my.var");
</code></pre>

blocks|key|1945907|text|作为从模板访问它的参考(对于play+<+2)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1945908|play.configuration['your.key']|code-block|syntax|javascript|1945909|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

As a reference to access it from the template (for play &lt; 2) 

<pre><code>play.configuration['your.key']
</code></pre>

blocks|key|1946006|text|使用方法如下(在Play+1.2.5中测试)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1946007|${play.configuration.getProperty('my.var')}|code-block|syntax|javascript|1946008|应在application.conf文件中指定my.var的位置|1946009|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Use as following (Tested in Play 1.2.5)

<pre><code>${play.configuration.getProperty('my.var')}
</code></pre>

where my.var should be specified in application.conf file

blocks|key|1946046|text|在实演中，java是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1946047|import+play.Play;
...
Play.application().configuration().getString("key")|code-block|syntax|javascript|1946048|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In the play java is:

<pre><code>import play.Play;
...
Play.application().configuration().getString("key")
</code></pre>

blocks|key|1732750|text|正如人们所提到的，Play.application.configuration已不复存在。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1732751|在Play+Scala+2.3.x中，要从conf/application.conf读取值，您可以执行以下操作：|1732752|import+play.api.Play.current
...
current.configuration.getString("key")|code-block|syntax|javascript|1732753|entityMap^0|9|U|0|L|L|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

As folks have mentioned, <code>Play.application.configuration</code> no longer exists.

In Play Scala 2.3.x, to read a value from <code>conf/application.conf</code>, you can do the following:

<pre><code>import play.api.Play.current
...
current.configuration.getString("key")
</code></pre>

blocks|key|1732783|text|在Play+2.4+and+%2B中，最好使用依赖注入来访问配置：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1732784|import+play.Configuration;
import+javax.inject.Inject;


@Inject
private+Configuration+configuration;

...

String+value+=+configuration.getString("your.key");|code-block|syntax|javascript|1732785|entityMap^0|1|E|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

From <code>Play 2.4 and +</code> it is better to use dependency injection to access Configurations:

<pre><code>import play.Configuration;
import javax.inject.Inject;


@Inject
private Configuration configuration;

...

String value = configuration.getString("your.key");
</code></pre>

blocks|key|1732803|text|在播放1.2.x中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1732804|import+play.Play;
...


String+version++=+Play.configuration.getProperty("application.version.number",+"1.1.1");|code-block|syntax|javascript|1732805|其中，第二个参数是默认值|1732806|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

In Play 1.2.x

<pre><code>import play.Play;
...


String version = Play.configuration.getProperty("application.version.number", "1.1.1");
</code></pre>

where the second parameter is the default value

blocks|key|1732835|text|导入此文件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1732836|import+com.typesafe.config.Config;|code-block|syntax|javascript|1732837|然后写下下面的几行|1732838|private+Config+config;
this.config+=+ConfigProvider.config();
String+value+=+this.config.getString("fieldFromConfigFile");|1732839|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Import this

<pre><code>import com.typesafe.config.Config;
</code></pre>

and write the below lines

<pre><code>private Config config;
this.config = ConfigProvider.config();
String value = this.config.getString("fieldFromConfigFile");
</code></pre>

blocks|key|1732950|text|import+play.Play;+String+myVal+=+Play.configuration.getProperty("your.key").toString();|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1732951|我在我的应用程序中使用了它，它可以工作|1732952|别忘了导入play.Play。希望它能对你有所帮助|1732953|entityMap^0|0|2F|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|P|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|K|$]]

<code>import play.Play;
String myVal = Play.configuration.getProperty("your.key").toString();</code>

i use this in my app and it works

Dont forget to import play.Play. Hope it'll gives you help

blocks|key|1946433|text|从2.5版本开始，请使用应该注入的play.Application类，然后使用application.config().getString("your.property.here")|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1946434|entityMap^0|13|1G|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Starting from version 2.5 please use play.Application class which should be injected and then
 <code>application.config().getString("your.property.here")</code>

I want to add an object to the Global scope, and in order to construct it I need to pass it a path to a file.
I don't want to hard code the file path in the source, and so I want to get that path from the application.conf.

The problem is that I don't know how to access these properties from the java class.
I tried this:

<pre><code>Configuration.root().getString("file.path")
</code></pre>

But it ends with a NullPointerException.

Am I wrong in assuming that there's a global Configuration instance that I can use?
Thanks.

Accessing the application.conf properties from java class with Play! 2.0

我想在Global作用域中添加一个对象，为了构造它，我需要向它传递一个文件路径。我不想在源代码中硬编码文件路径，所以我想从application.conf中获取该路径。问题是我不知道如何从java类访问这些属性。我试过这个：Configuration.root().getString("file.path")但它以Nu...

问使用Play！2.0从java类访问application.conf属性
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