找不到包 java.util 的资源
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Can't find resource for bundle java.util
提问by
I have tow properties files :
我有两个属性文件：
config-app.properties
config-app.properties
config-dev.properties
config-dev.properties
and i try to read from the fist witch read also from the second like that :
我试着从拳头女巫那里读出来，也从第二个女巫那里读出来：
the java code:
Java代码：
String smtpHostName = ResourceBundle.getBundle("config-app").getString("smtp.host.name");
config-app.properties
config-app.properties
smtp.host.name =${smtp.host.name.env}
config-dev.properties
config-dev.properties
smtp.host.name.env =smtp.gmail.com
but i have that message :
但我有这样的消息：
Can't find resource for bundle java.util.PropertyResourceBundle
Edit: Code formatting.
编辑：代码格式。
回答by Andres Olarte
This should work, assuming config-app.propertiesexists in the class path (in the root). You should not get the error "Can't find resource for bundle java.util.PropertyResourceBundle".
这应该有效，假设config-app.properties存在于类路径中（在根中）。您应该不会收到错误“找不到包 java.util.PropertyResourceBundle 的资源”。
However, what you're trying to do, by substituting ${smtp.host.name.env}, will NOT work with ResourceBundle. You would need another library to do something more complicated like that.
但是，通过替换 ${smtp.host.name.env}，您尝试执行的操作不适用于 ResourceBundle。你需要另一个库来做一些更复杂的事情。
UPDATED
更新
It's not clear what you're trying to do, but assuming you want to have profile for developement and another one for production, you could try to do something like this:
目前尚不清楚您要做什么，但假设您想要开发配置文件和生产配置文件，您可以尝试执行以下操作：
Properties defaultProperties = new Properties();
defaultProperties.load(new FileInputStream("config-app.properties"));
Properties properties = new Properties(defaultProperties);
if (isDev()) {
properties.load(new FileInputStream("config-dev.properties"));
} else {
properties.load(new FileInputStream("whatever.properties"));
}
properties.getProperty("smtp.host.name");
This will have default settings in config-app.properties, which can be overwritten in config-dev.propertiesor whatever.propertiesas needed. In this case the keep must be the same.
这将在 中具有默认设置config-app.properties，可以在其中config-dev.properties或whatever.properties根据需要覆盖。在这种情况下，保持必须相同。
config-app.properties:
config-app.properties:
smtp.host.name =localhost
config-dev.properties:
config-dev.properties：
smtp.host.name =smtp.gmail.com
One last note, the previous code is loading the files from the filesystem, if you have them in the classpath, use something like :
最后要注意的是，前面的代码是从文件系统加载文件，如果类路径中有它们，请使用以下内容：
defaultProperties.load(Classname.class.getClassLoader().getResourceAsStream("config-app.properties"));
