包括從$ {HOME} /應用/ someconfig.conf

Question

我需要包括一些配置文件到我的類型安全配置CONFIGS，像

include ${user.HOME}"/.app/db-test.conf" 

但是解析器抱怨：

com.typesafe.config.ConfigException$Parse: dev/application.conf: 47: include keyword is not followed by a quoted string, but by: '${'user.HOME'}' 
com.typesafe.config.ConfigException$Parse: dev/application.conf: 47: include keyword is not followed by a quoted string, but by: '${'user.HOME'}' 
    at com.typesafe.config.impl.Parser$ParseContext.parseError(Parser.java:329) 
    at com.typesafe.config.impl.Parser$ParseContext.parseError(Parser.java:325) 
    at com.typesafe.config.impl.Parser$ParseContext.parseInclude(Parser.java:574) 
    at com.typesafe.config.impl.Parser$ParseContext.parseObject(Parser.java:624) 
    at com.typesafe.config.impl.Parser$ParseContext.parseValue(Parser.java:408) 
    at com.typesafe.config.impl.Parser$ParseContext.parseObject(Parser.java:657) 
    at com.typesafe.config.impl.Parser$ParseContext.parse(Parser.java:832) 
    at com.typesafe.config.impl.Parser.parse(Parser.java:34) 

哪有我使用系統屬性/環境變量包括報表？

Answer 1

目前不可能開箱即用（請參閱https://github.com/typesafehub/config/issues/122）。

但是，如果您使用可修改的代碼配置應用程序，則可以編寫自定義ConfigIncluder。見http://typesafehub.github.io/config/latest/api/com/typesafe/config/ConfigIncluder.html

您也可以使用標準的Java機制添加URL方案爲Java（見Creating custom URI scheme using URI class） 然後用include url("myscheme:whatever")

Answer 2

你能在加載你的配置代碼中手動做到這一點？

Config baseConfig = ConfigFactory.load(); 
// Probably want error checking here. 
Config testConfig = ConfigFactory.parseFile(
    new File(System.getenv("HOME") + "/.app/db-test.conf")); 
// You may need to change your resolution order, depending on what you're doing in your 
// default config. 
testConfig.resolve(); 
Config finalConfig = baseConfig.withFallback(testConfig);