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Groovy/Grails：从列表创建映射

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Groovy/Grails：从列表创建映射,grails,groovy,Grails,Groovy,我有两份清单： def courseList = PublicTraining.executeQuery( "SELECT t.course.id, t.course.name from PublicTraining AS t") def cityList = PublicTraining.executeQuery( "SELECT t.venue.city.id, t.venue.city.name from PublicTraining AS t") 以及： c

我有两份清单：

 def courseList  = PublicTraining.executeQuery(
     "SELECT t.course.id, t.course.name from PublicTraining AS t")
 def cityList  = PublicTraining.executeQuery(
     "SELECT t.venue.city.id, t.venue.city.name from PublicTraining AS t")
以及：

courseList  = [[1, weblogic], [2, ajax]]
cityList   = [[1, City1], [2, City2]]
我怎样才能创建一个像这样的
Map

resultMap = ['Course':[['1', 'weblogic'],['2', 'ajax']], 'City':[['1','City1'],
    ['2','City2']] ]
如果您有两个列表，那么为什么不创建地图
resultMap=['Course'：courseList，'City'：cityList]
我想，我在这个问题上遗漏了一些东西…..或者在一行resultMap=[Course:PublicTraining.executeQuery”（“从PublicTraining中选择t.Course.id，t.Course.name作为t”），城市：PublicTraining.executeQuery（“从PublicTraining中选择t.venture.City.id，t.venture.City.name作为t”）]