Grails为所有的控件器加方法

如要在所有的Controller中使用transport2Map方法
在BootStarp的类如下


import org.codehaus.groovy.grails.commons.GrailsApplication
import org.codehaus.groovy.grails.web.servlet.GrailsApplicationAttributes
import org.springframework.context.ApplicationContext

class BootStrap {

    def init = { servletContext ->

        ApplicationContext applicationContext = servletContext.getAttribute(GrailsApplicationAttributes.APPLICATION_CONTEXT)
        GrailsApplication  application = (GrailsApplication) applicationContext.getBean("grailsApplication")

        addDynamicMethods(applicationContext, application)

    }

    def destroy = {
    }

    def addDynamicMethods = { ApplicationContext applicationContext, GrailsApplication application ->
        addDynamicControllerMethods(applicationContext, application)
    }

    def addDynamicControllerMethods = { ApplicationContext applicationContext, GrailsApplication application ->
        application.controllerClasses.each { controllerClass ->
            controllerClass.metaClass."transport2Map" = { obj ->            //将页面中数组对像转成Map
                Map split = obj?.inject([:]) { map, param ->                //页面参数的格式如：user.1-name
                    List list = param.key.split('-')
                    if (list.size() != 2) { // only allow for 1 '-' in a param
                        return map
                    }
                    String firstKey = list.first()
                    String lastKey = list.last()
                    if (!map.get(firstKey)) {
                        map."$firstKey" = [:] // init map for this key
                    }
                    map."$firstKey"."$lastKey" = param.value
                    return map
                }
            }
        }
    }
}