grails /外部配置/ grails.config.locations - 绝对路径文件“不存在”？ [英] grails / external configuration / grails.config.locations - absolute path file "Does not exist"?

问题描述

我试图使用Grails的内置机制来加载部署的WAR文件外部的外部配置文件（* .groovy和* .properties）。文档意味着这只是使用适当的 classpath：或<$ c>设置 grails.config.locations $ c> file：路径。

I'm trying to use Grails' built-in mechanism for loading external configuration files (*.groovy and *.properties) outside the deployed WAR file. The documentation implies this is just a case of setting grails.config.locations with the appropriate classpath: or file: paths.

我已经配置了Config.groovy：

I've configured Config.groovy with:

String externalConfigLocation = System.getProperty("SYSTEM_PROPERTY_KEY")
if (!grails.config.locations || !(grails.config.locations instanceof List)) {
    grails.config.locations = []    
}
if (classpathExternalConfigLocation) {
    String pathToResource = "\"file:${basedir}" + File.separator + externalConfigLocation+"\""

    print "Loading external configuration file: ${pathToResource}\n"
    grails.config.locations << pathToResource
}

但这没有效果，错误消息指示文件不存在。但是，打印存储在 grails.config.locations 中的绝对路径指示它。我尝试了一些组合：

However this hasn't worked, with error messages indicating the file "Does not exist". However, printing the absolute path stored in grails.config.locations indicates it does. I have tried some combinations:

• classpath：configurationFile.properties


• 档案：c：\path_to_file\configurationFile.properties


• c ：\path_to_file\configurationFile.properties

• classpath:configurationFile.properties
• file:c:\path_to_file\configurationFile.properties
• c:\path_to_file\configurationFile.properties

但在所有这些情况下，文件不能发现。

but in all these cases the file can't be found.

很奇怪 - 建议赞赏。或者如何调试的建议。

Very strange - advise appreciated. Or suggestions on how to debug.

推荐答案

这是我通常做的：

grails.config.locations = ["classpath:${appName}-config.groovy",
                           "file:./${appName}-config.groovy"]
if (System.properties["${appName}.config.location"]) {
   grails.config.locations << "file:" + System.properties["${appName}.config.location"]
}

$ b b

这样我就可以在项目根目录中放置一个文件，以便在开发时（使用文件：location）和服务器类路径中的文件部署为战争时自定义属性。 Tomcat的lib文件夹在它的类路径中，所以如果你使用Tomcat，这是一个放置文件的好地方。通过将应用程序名称放在文件中，您可以拥有多个配置文件，而无需他们彼此踩。

This lets me put a file in the project root to customize properties locally when developing (using the file: location) and a file in the server's classpath when deployed as a war. Tomcat's lib folder is in its classpath so that's a good place to put files if you're using Tomcat. By putting the app name in the file you can have multiple config files without them stepping on each other.

请务必将本地配置文件添加到svn：ignore或。 gitignore所以你不检查它源代码控制。每个开发人员可以有自己的设置（或只使用默认值），而不影响其他设置。

Be sure to add the local config file to svn:ignore or .gitignore so you don't check it into source control. Each developer can then have their own settings (or just use the defaults) without affecting the others.

这是一个外部化数据库密码和其他生产值的好方法。应用程序部署器（最好不是开发人员）管理文件及其内容，这避免了将密码检入源代码控制。比使用JNDI IMO更好。

This is a great way to externalize database passwords and other production values. The app deployer (ideally not a developer) manages the file and its contents and this avoids checking in passwords into source control. Much better than using JNDI IMO.

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