Groovy 迭代和更新 Map<String,List<String>> 值

Question

我有一个Map<String,List<String>> invoiceErrorLines如下

invoiceErrorLines = ['1660277':['Line : 1 Invoice does not foot Reported', 'Line : 1 MATH ERROR'], 
                '1660278':['Line : 5 Invoice does not foot Reported'], 
                '1660279':['Line : 7 Invoice does not foot Reported'], 
                '1660280':['Line : 9 Invoice does not foot Reported']]

正在遍历地图并更改错误消息的行号，如下所示，但在打印 invoiceErrorLines 地图时没有看到更新的错误消息

invoiceErrorLines.each{ invNum ->
   invNum.value.each{
      int actualLineNumber = getActualLineNumber(it)
      it.replaceFirst("\d+", String.valueOf(actualLineNumber))
   }  
}

有人可以帮我解决这个问题吗？

Answer 1

您只是迭代字符串并对它们调用 replaceFirst。这不会更改您的数据。您宁愿 collect 那里有您的数据。例如：

invoiceErrorLines = [
    '1660277':['Line : 1 Invoice does not foot Reported', 'Line : 1 MATH ERROR'], 
    '1660278':['Line : 5 Invoice does not foot Reported'], 
    '1660279':['Line : 7 Invoice does not foot Reported'], 
    '1660280':['Line : 9 Invoice does not foot Reported']
]

println invoiceErrorLines.collectEntries{ k,v -> 
    [k, v.collect{ it.replaceFirst(/\d+/, '1') }] 
}

// Results: =>
[
    1660277: [Line : 1 Invoice does not foot Reported, Line : 1 MATH ERROR], 
    1660278: [Line : 1 Invoice does not foot Reported], 
    1660279: [Line : 1 Invoice does not foot Reported],
    1660280: [Line : 1 Invoice does not foot Reported]
]

Groovy 迭代和更新 Map<String,List<String>> 值

Groovy iterating and updating Map<String,List<String>> values

iteration

collections

groovy