我有一个像这样的列表:
List tripIds = new ArrayList()
def sql = Sql.newInstance("jdbc:mysql://localhost:3306/steer", "root", "", "com.mysql.jdbc.Driver")
sql.eachRow("SELECT trip.id from trip JOIN department WHERE organization_id = trip.client_id AND department.id = 1") {
println "Gromit likes ${it.id}"
tripIds << it.id
}
打印 tripids 给我一个值:
[1,2,3,4,5,6,]
我想将这个列表转换为简单的字符串,例如: 1,2,3,4,5,6
我该如何做到这一点?
tripIds.get(i)
的代码呢?实际上,为什么不把创建的代码放在一个方法中,然后只需从示例中调用它,这样不是更节省垂直空间吗? - Dave Newton