Question

  def colarray=[]
                    def num
                    def newRole = rolecol.split(',')
                    def len = newRole.size()
                    println "$newRole,$len"
                    for (num = 0; num < len; num++) {
                        def col = "col"
                        col="$col"+newRole[num]
                        colarray.add(col)

                    }
                    println colarray
                    sql.eachRow("select col01,$colarray from read_csv where col01=? and col${usercol}!=? ", [file.name,""])

我想将col1..col11保存到数组中并从select语句中调用它，但问题是$ colarray有括号（如col03，col04，col05，col06，col07，col08，col09，col10， col11，col12，col13，col14，col15，col16，col17，col18，col19，col20，col21，col22，col23，col24，col25，col26，col27，col28，col29，col30，col31，col32，col33] ），所以现在我想删除它们，任何人都可以帮助它??? thx

Answer 1

[]就在那里，因为你在列表上做了一个隐含的toString。使用colarray.join(',')

Answer 2

def colarray = rolecol.tokenize(',').collect { "col$it" }.join(', ')

然后你还需要转义你的sql：

sql.eachRow("select col01, ${Sql.expand(colarray)} from read_csv where col01 = ? and ${Sql.expand('col' + usercol)} != ? ", [file.name,""])

groovy数组删除括号

2 个答案: