Grails 技巧 - 配置篇

1.Grails 開發的時候要求JDK 6 ，可是能夠部署到JDK5環境(BuildConfig.groovy)

grails.project.source.level = "1.5"  
grails.project.target.level = "1.5"

2.指定Servlet 版本(BuildConfig.groovy)

grails.servlet.version = "3.0"

3.配置 root logger (Config.groovy)

log4j = {  
    root {  
        info()  
    } 
    …  
}

4.配置全局failOnError (Config.groovy)

grails.gorm.failOnError=true

5.package 級別 failOnError (Config.groovy)

grails.gorm.failOnError = ['com.companyname.somepackage','com.companyname.someotherpackage']

6.環境檢測

import grails.util.Environment
...

switch (Environment.current) {
    case Environment.DEVELOPMENT:
        configureForDevelopment()
        break
    case Environment.PRODUCTION:
        configureForProduction()
        break
}

Environment.executeForCurrentEnvironment {
    production {
        // do something in production
    }
    development {
        // do something only in development
    }
}

7.啓動時環境檢測 （BootStrap.groovy）

def init = { ServletContext ctx ->
    environments {
        production {
            ctx.setAttribute("env", "prod")
        }
        development {
            ctx.setAttribute("env", "dev")
        }
    }
    ctx.setAttribute("foo", "bar")
}

8.外部配置 (Config.groovy)

grails.config.locations = [
    "classpath:${appName}-config.properties",
    "classpath:${appName}-config.groovy",
    "file:${userHome}/.grails/${appName}-config.properties",
    "file:${userHome}/.grails/${appName}-config.groovy" ]

9.使用 System.properties 外部配置 (Config.groovy)

if (System.properties["${appName}.config.location"]) {
grails.config.locations << "file:" +
System.properties["${appName}.config.location"]
}

而後 -DmyApp.config.location=/path/to/myconfig.groovy

10.解決Windows下Grails啓動時控制檯顯示亂碼問題

grails -Dfile.encoding=GBK run-app

11.指定Grails啓動時端口

grails -Dserver.port=9090 run-app